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@@ -0,0 +1,2693 @@
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+From 37a5c14aad5051201e4bd18faf1a4b25a824cc30 Mon Sep 17 00:00:00 2001
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+From: Eneas U de Queiroz <[email protected]>
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+Date: Tue, 6 Nov 2018 10:57:03 -0200
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+Subject: [PATCH 4/4] e_devcrypto: make the /dev/crypto engine dynamic
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+
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+Engine has been moved from crypto/engine/eng_devcrypto.c to
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+engines/e_devcrypto.c.
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+
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+Signed-off-by: Eneas U de Queiroz <[email protected]>
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+
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+--- a/crypto/engine/build.info
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++++ b/crypto/engine/build.info
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+@@ -6,6 +6,3 @@ SOURCE[../../libcrypto]=\
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+ tb_cipher.c tb_digest.c tb_pkmeth.c tb_asnmth.c tb_eckey.c \
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+ eng_openssl.c eng_cnf.c eng_dyn.c \
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+ eng_rdrand.c
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+-IF[{- !$disabled{devcryptoeng} -}]
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+- SOURCE[../../libcrypto]=eng_devcrypto.c
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+-ENDIF
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+--- a/crypto/init.c
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++++ b/crypto/init.c
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+@@ -330,18 +330,6 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_engine_
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+ engine_load_openssl_int();
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+ return 1;
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+ }
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+-# ifndef OPENSSL_NO_DEVCRYPTOENG
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+-static CRYPTO_ONCE engine_devcrypto = CRYPTO_ONCE_STATIC_INIT;
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+-DEFINE_RUN_ONCE_STATIC(ossl_init_engine_devcrypto)
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+-{
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+-# ifdef OPENSSL_INIT_DEBUG
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+- fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_devcrypto: "
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+- "engine_load_devcrypto_int()\n");
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+-# endif
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+- engine_load_devcrypto_int();
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+- return 1;
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+-}
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+-# endif
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+
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+ # ifndef OPENSSL_NO_RDRAND
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+ static CRYPTO_ONCE engine_rdrand = CRYPTO_ONCE_STATIC_INIT;
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+@@ -366,6 +354,18 @@ DEFINE_RUN_ONCE_STATIC(ossl_init_engine_
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+ return 1;
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+ }
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+ # ifndef OPENSSL_NO_STATIC_ENGINE
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++# ifndef OPENSSL_NO_DEVCRYPTOENG
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++static CRYPTO_ONCE engine_devcrypto = CRYPTO_ONCE_STATIC_INIT;
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++DEFINE_RUN_ONCE_STATIC(ossl_init_engine_devcrypto)
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++{
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++# ifdef OPENSSL_INIT_DEBUG
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++ fprintf(stderr, "OPENSSL_INIT: ossl_init_engine_devcrypto: "
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++ "engine_load_devcrypto_int()\n");
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++# endif
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++ engine_load_devcrypto_int();
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++ return 1;
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++}
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++# endif
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+ # if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK)
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+ static CRYPTO_ONCE engine_padlock = CRYPTO_ONCE_STATIC_INIT;
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+ DEFINE_RUN_ONCE_STATIC(ossl_init_engine_padlock)
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+@@ -714,11 +714,6 @@ int OPENSSL_init_crypto(uint64_t opts, c
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+ if ((opts & OPENSSL_INIT_ENGINE_OPENSSL)
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+ && !RUN_ONCE(&engine_openssl, ossl_init_engine_openssl))
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+ return 0;
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+-# if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_DEVCRYPTOENG)
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+- if ((opts & OPENSSL_INIT_ENGINE_CRYPTODEV)
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+- && !RUN_ONCE(&engine_devcrypto, ossl_init_engine_devcrypto))
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+- return 0;
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+-# endif
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+ # ifndef OPENSSL_NO_RDRAND
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+ if ((opts & OPENSSL_INIT_ENGINE_RDRAND)
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+ && !RUN_ONCE(&engine_rdrand, ossl_init_engine_rdrand))
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+@@ -728,6 +723,11 @@ int OPENSSL_init_crypto(uint64_t opts, c
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+ && !RUN_ONCE(&engine_dynamic, ossl_init_engine_dynamic))
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+ return 0;
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+ # ifndef OPENSSL_NO_STATIC_ENGINE
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++# ifndef OPENSSL_NO_DEVCRYPTOENG
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++ if ((opts & OPENSSL_INIT_ENGINE_CRYPTODEV)
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++ && !RUN_ONCE(&engine_devcrypto, ossl_init_engine_devcrypto))
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++ return 0;
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++# endif
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+ # if !defined(OPENSSL_NO_HW) && !defined(OPENSSL_NO_HW_PADLOCK)
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+ if ((opts & OPENSSL_INIT_ENGINE_PADLOCK)
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+ && !RUN_ONCE(&engine_padlock, ossl_init_engine_padlock))
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+--- a/engines/build.info
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++++ b/engines/build.info
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+@@ -10,6 +10,9 @@ IF[{- !$disabled{"engine"} -}]
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+ IF[{- !$disabled{afalgeng} -}]
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+ SOURCE[../libcrypto]=e_afalg.c
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+ ENDIF
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++ IF[{- !$disabled{"devcryptoeng"} -}]
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++ SOURCE[../libcrypto]=e_devcrypto.c
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++ ENDIF
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+ ELSE
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+ ENGINES=padlock
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+ SOURCE[padlock]=e_padlock.c {- $target{padlock_asm_src} -}
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+@@ -27,6 +30,12 @@ IF[{- !$disabled{"engine"} -}]
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+ DEPEND[afalg]=../libcrypto
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+ INCLUDE[afalg]= ../include
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+ ENDIF
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++ IF[{- !$disabled{"devcryptoeng"} -}]
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++ ENGINES=devcrypto
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++ SOURCE[devcrypto]=e_devcrypto.c
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++ DEPEND[devcrypto]=../libcrypto
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++ INCLUDE[devcrypto]=../include
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++ ENDIF
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+
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+ ENGINES_NO_INST=ossltest dasync
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+ SOURCE[dasync]=e_dasync.c
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+--- a/crypto/engine/eng_devcrypto.c
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++++ /dev/null
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+@@ -1,1264 +0,0 @@
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+-/*
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+- * Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved.
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+- *
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+- * Licensed under the OpenSSL license (the "License"). You may not use
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+- * this file except in compliance with the License. You can obtain a copy
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+- * in the file LICENSE in the source distribution or at
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+- * https://www.openssl.org/source/license.html
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+- */
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+-
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+-#include "e_os.h"
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+-#include <string.h>
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+-#include <sys/types.h>
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+-#include <sys/stat.h>
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+-#include <fcntl.h>
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+-#include <sys/ioctl.h>
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+-#include <unistd.h>
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+-#include <assert.h>
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+-
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+-#include <openssl/conf.h>
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+-#include <openssl/evp.h>
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+-#include <openssl/err.h>
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+-#include <openssl/engine.h>
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+-#include <openssl/objects.h>
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+-#include <crypto/cryptodev.h>
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+-
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+-#include "internal/engine.h"
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+-
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+-/* #define ENGINE_DEVCRYPTO_DEBUG */
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+-
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+-#ifdef CRYPTO_ALGORITHM_MIN
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+-# define CHECK_BSD_STYLE_MACROS
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+-#endif
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+-
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+-/*
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+- * ONE global file descriptor for all sessions. This allows operations
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+- * such as digest session data copying (see digest_copy()), but is also
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+- * saner... why re-open /dev/crypto for every session?
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+- */
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+-static int cfd;
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+-#define DEVCRYPTO_REQUIRE_ACCELERATED 0 /* require confirmation of acceleration */
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+-#define DEVCRYPTO_USE_SOFTWARE 1 /* allow software drivers */
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+-#define DEVCRYPTO_REJECT_SOFTWARE 2 /* only disallow confirmed software drivers */
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+-
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+-#define DEVCRYPTO_DEFAULT_USE_SOFDTRIVERS DEVCRYPTO_REJECT_SOFTWARE
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+-static int use_softdrivers = DEVCRYPTO_DEFAULT_USE_SOFDTRIVERS;
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+-
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+-/*
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+- * cipher/digest status & acceleration definitions
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+- * Make sure the defaults are set to 0
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+- */
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+-struct driver_info_st {
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+- enum devcrypto_status_t {
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+- DEVCRYPTO_STATUS_FAILURE = -3, /* unusable for other reason */
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+- DEVCRYPTO_STATUS_NO_CIOCCPHASH = -2, /* hash state copy not supported */
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+- DEVCRYPTO_STATUS_NO_CIOCGSESSION = -1, /* session open failed */
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+- DEVCRYPTO_STATUS_UNKNOWN = 0, /* not tested yet */
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+- DEVCRYPTO_STATUS_USABLE = 1 /* algo can be used */
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+- } status;
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+-
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+- enum devcrypto_accelerated_t {
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+- DEVCRYPTO_NOT_ACCELERATED = -1, /* software implemented */
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+- DEVCRYPTO_ACCELERATION_UNKNOWN = 0, /* acceleration support unkown */
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+- DEVCRYPTO_ACCELERATED = 1 /* hardware accelerated */
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+- } accelerated;
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+-
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+- char *driver_name;
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+-};
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+-
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+-static int clean_devcrypto_session(struct session_op *sess) {
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+- if (ioctl(cfd, CIOCFSESSION, &sess->ses) < 0) {
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+- SYSerr(SYS_F_IOCTL, errno);
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+- return 0;
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+- }
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+- memset(sess, 0, sizeof(struct session_op));
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+- return 1;
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+-}
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+-
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+-/******************************************************************************
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+- *
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+- * Ciphers
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+- *
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+- * Because they all do the same basic operation, we have only one set of
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+- * method functions for them all to share, and a mapping table between
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+- * NIDs and cryptodev IDs, with all the necessary size data.
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+- *
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+- *****/
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+-
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+-struct cipher_ctx {
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+- struct session_op sess;
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+- int op; /* COP_ENCRYPT or COP_DECRYPT */
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+- unsigned long mode; /* EVP_CIPH_*_MODE */
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+-
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+- /* to handle ctr mode being a stream cipher */
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+- unsigned char partial[EVP_MAX_BLOCK_LENGTH];
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+- unsigned int blocksize, num;
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+-};
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+-
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+-static const struct cipher_data_st {
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+- int nid;
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+- int blocksize;
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+- int keylen;
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+- int ivlen;
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+- int flags;
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+- int devcryptoid;
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+-} cipher_data[] = {
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+-#ifndef OPENSSL_NO_DES
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+- { NID_des_cbc, 8, 8, 8, EVP_CIPH_CBC_MODE, CRYPTO_DES_CBC },
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+- { NID_des_ede3_cbc, 8, 24, 8, EVP_CIPH_CBC_MODE, CRYPTO_3DES_CBC },
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+-#endif
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+-#ifndef OPENSSL_NO_BF
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+- { NID_bf_cbc, 8, 16, 8, EVP_CIPH_CBC_MODE, CRYPTO_BLF_CBC },
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+-#endif
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+-#ifndef OPENSSL_NO_CAST
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+- { NID_cast5_cbc, 8, 16, 8, EVP_CIPH_CBC_MODE, CRYPTO_CAST_CBC },
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+-#endif
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+- { NID_aes_128_cbc, 16, 128 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC },
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+- { NID_aes_192_cbc, 16, 192 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC },
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+- { NID_aes_256_cbc, 16, 256 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC },
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+-#ifndef OPENSSL_NO_RC4
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+- { NID_rc4, 1, 16, 0, EVP_CIPH_STREAM_CIPHER, CRYPTO_ARC4 },
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+-#endif
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+-#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_AES_CTR)
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+- { NID_aes_128_ctr, 16, 128 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR },
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+- { NID_aes_192_ctr, 16, 192 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR },
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+- { NID_aes_256_ctr, 16, 256 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR },
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+-#endif
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+-#if 0 /* Not yet supported */
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+- { NID_aes_128_xts, 16, 128 / 8 * 2, 16, EVP_CIPH_XTS_MODE, CRYPTO_AES_XTS },
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+- { NID_aes_256_xts, 16, 256 / 8 * 2, 16, EVP_CIPH_XTS_MODE, CRYPTO_AES_XTS },
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+-#endif
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+-#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_AES_ECB)
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+- { NID_aes_128_ecb, 16, 128 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
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+- { NID_aes_192_ecb, 16, 192 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
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+- { NID_aes_256_ecb, 16, 256 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
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+-#endif
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+-#if 0 /* Not yet supported */
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+- { NID_aes_128_gcm, 16, 128 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
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+- { NID_aes_192_gcm, 16, 192 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
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+- { NID_aes_256_gcm, 16, 256 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
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+-#endif
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+-#ifndef OPENSSL_NO_CAMELLIA
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+- { NID_camellia_128_cbc, 16, 128 / 8, 16, EVP_CIPH_CBC_MODE,
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+- CRYPTO_CAMELLIA_CBC },
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+- { NID_camellia_192_cbc, 16, 192 / 8, 16, EVP_CIPH_CBC_MODE,
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+- CRYPTO_CAMELLIA_CBC },
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+- { NID_camellia_256_cbc, 16, 256 / 8, 16, EVP_CIPH_CBC_MODE,
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+- CRYPTO_CAMELLIA_CBC },
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+-#endif
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+-};
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+-
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+-static size_t find_cipher_data_index(int nid)
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+-{
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+- size_t i;
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+-
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+- for (i = 0; i < OSSL_NELEM(cipher_data); i++)
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+- if (nid == cipher_data[i].nid)
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+- return i;
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+- return (size_t)-1;
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+-}
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+-
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+-static size_t get_cipher_data_index(int nid)
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+-{
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+- size_t i = find_cipher_data_index(nid);
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+-
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+- if (i != (size_t)-1)
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+- return i;
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+-
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+- /*
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+- * Code further down must make sure that only NIDs in the table above
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+- * are used. If any other NID reaches this function, there's a grave
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+- * coding error further down.
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+- */
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+- assert("Code that never should be reached" == NULL);
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+- return -1;
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+-}
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+-
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+-static const struct cipher_data_st *get_cipher_data(int nid)
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+-{
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+- return &cipher_data[get_cipher_data_index(nid)];
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+-}
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+-
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+-/*
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+- * Following are the three necessary functions to map OpenSSL functionality
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+- * with cryptodev.
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+- */
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+-
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+-static int cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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+- const unsigned char *iv, int enc)
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+-{
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+- struct cipher_ctx *cipher_ctx =
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+- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
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+- const struct cipher_data_st *cipher_d =
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+- get_cipher_data(EVP_CIPHER_CTX_nid(ctx));
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+-
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+- /* cleanup a previous session */
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+- if (cipher_ctx->sess.ses != 0 &&
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+- clean_devcrypto_session(&cipher_ctx->sess) == 0)
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+- return 0;
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+-
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+- cipher_ctx->sess.cipher = cipher_d->devcryptoid;
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+- cipher_ctx->sess.keylen = cipher_d->keylen;
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+- cipher_ctx->sess.key = (void *)key;
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+- cipher_ctx->op = enc ? COP_ENCRYPT : COP_DECRYPT;
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+- cipher_ctx->mode = cipher_d->flags & EVP_CIPH_MODE;
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+- cipher_ctx->blocksize = cipher_d->blocksize;
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+- if (ioctl(cfd, CIOCGSESSION, &cipher_ctx->sess) < 0) {
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+- SYSerr(SYS_F_IOCTL, errno);
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+- return 0;
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+- }
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+-
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+- return 1;
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+-}
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+-
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+-static int cipher_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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+- const unsigned char *in, size_t inl)
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+-{
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+- struct cipher_ctx *cipher_ctx =
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+- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
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+- struct crypt_op cryp;
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+- unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
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+-#if !defined(COP_FLAG_WRITE_IV)
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+- unsigned char saved_iv[EVP_MAX_IV_LENGTH];
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+- const unsigned char *ivptr;
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+- size_t nblocks, ivlen;
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+-#endif
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+-
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+- memset(&cryp, 0, sizeof(cryp));
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+- cryp.ses = cipher_ctx->sess.ses;
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+- cryp.len = inl;
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+- cryp.src = (void *)in;
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+- cryp.dst = (void *)out;
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+- cryp.iv = (void *)iv;
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+- cryp.op = cipher_ctx->op;
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+-#if !defined(COP_FLAG_WRITE_IV)
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+- cryp.flags = 0;
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+-
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+- ivlen = EVP_CIPHER_CTX_iv_length(ctx);
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+- if (ivlen > 0)
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+- switch (cipher_ctx->mode) {
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|
|
+- case EVP_CIPH_CBC_MODE:
|
|
|
+- assert(inl >= ivlen);
|
|
|
+- if (!EVP_CIPHER_CTX_encrypting(ctx)) {
|
|
|
+- ivptr = in + inl - ivlen;
|
|
|
+- memcpy(saved_iv, ivptr, ivlen);
|
|
|
+- }
|
|
|
+- break;
|
|
|
+-
|
|
|
+- case EVP_CIPH_CTR_MODE:
|
|
|
+- break;
|
|
|
+-
|
|
|
+- default: /* should not happen */
|
|
|
+- return 0;
|
|
|
+- }
|
|
|
+-#else
|
|
|
+- cryp.flags = COP_FLAG_WRITE_IV;
|
|
|
+-#endif
|
|
|
+-
|
|
|
+- if (ioctl(cfd, CIOCCRYPT, &cryp) < 0) {
|
|
|
+- SYSerr(SYS_F_IOCTL, errno);
|
|
|
+- return 0;
|
|
|
+- }
|
|
|
+-
|
|
|
+-#if !defined(COP_FLAG_WRITE_IV)
|
|
|
+- if (ivlen > 0)
|
|
|
+- switch (cipher_ctx->mode) {
|
|
|
+- case EVP_CIPH_CBC_MODE:
|
|
|
+- assert(inl >= ivlen);
|
|
|
+- if (EVP_CIPHER_CTX_encrypting(ctx))
|
|
|
+- ivptr = out + inl - ivlen;
|
|
|
+- else
|
|
|
+- ivptr = saved_iv;
|
|
|
+-
|
|
|
+- memcpy(iv, ivptr, ivlen);
|
|
|
+- break;
|
|
|
+-
|
|
|
+- case EVP_CIPH_CTR_MODE:
|
|
|
+- nblocks = (inl + cipher_ctx->blocksize - 1)
|
|
|
+- / cipher_ctx->blocksize;
|
|
|
+- do {
|
|
|
+- ivlen--;
|
|
|
+- nblocks += iv[ivlen];
|
|
|
+- iv[ivlen] = (uint8_t) nblocks;
|
|
|
+- nblocks >>= 8;
|
|
|
+- } while (ivlen);
|
|
|
+- break;
|
|
|
+-
|
|
|
+- default: /* should not happen */
|
|
|
+- return 0;
|
|
|
+- }
|
|
|
+-#endif
|
|
|
+-
|
|
|
+- return 1;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int ctr_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
|
+- const unsigned char *in, size_t inl)
|
|
|
+-{
|
|
|
+- struct cipher_ctx *cipher_ctx =
|
|
|
+- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
|
+- size_t nblocks, len;
|
|
|
+-
|
|
|
+- /* initial partial block */
|
|
|
+- while (cipher_ctx->num && inl) {
|
|
|
+- (*out++) = *(in++) ^ cipher_ctx->partial[cipher_ctx->num];
|
|
|
+- --inl;
|
|
|
+- cipher_ctx->num = (cipher_ctx->num + 1) % cipher_ctx->blocksize;
|
|
|
+- }
|
|
|
+-
|
|
|
+- /* full blocks */
|
|
|
+- if (inl > (unsigned int) cipher_ctx->blocksize) {
|
|
|
+- nblocks = inl/cipher_ctx->blocksize;
|
|
|
+- len = nblocks * cipher_ctx->blocksize;
|
|
|
+- if (cipher_do_cipher(ctx, out, in, len) < 1)
|
|
|
+- return 0;
|
|
|
+- inl -= len;
|
|
|
+- out += len;
|
|
|
+- in += len;
|
|
|
+- }
|
|
|
+-
|
|
|
+- /* final partial block */
|
|
|
+- if (inl) {
|
|
|
+- memset(cipher_ctx->partial, 0, cipher_ctx->blocksize);
|
|
|
+- if (cipher_do_cipher(ctx, cipher_ctx->partial, cipher_ctx->partial,
|
|
|
+- cipher_ctx->blocksize) < 1)
|
|
|
+- return 0;
|
|
|
+- while (inl--) {
|
|
|
+- out[cipher_ctx->num] = in[cipher_ctx->num]
|
|
|
+- ^ cipher_ctx->partial[cipher_ctx->num];
|
|
|
+- cipher_ctx->num++;
|
|
|
+- }
|
|
|
+- }
|
|
|
+-
|
|
|
+- return 1;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int cipher_ctrl(EVP_CIPHER_CTX *ctx, int type, int p1, void* p2)
|
|
|
+-{
|
|
|
+- struct cipher_ctx *cipher_ctx =
|
|
|
+- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
|
+- EVP_CIPHER_CTX *to_ctx = (EVP_CIPHER_CTX *)p2;
|
|
|
+- struct cipher_ctx *to_cipher_ctx;
|
|
|
+-
|
|
|
+- switch (type) {
|
|
|
+- case EVP_CTRL_COPY:
|
|
|
+- if (cipher_ctx == NULL)
|
|
|
+- return 1;
|
|
|
+- /* when copying the context, a new session needs to be initialized */
|
|
|
+- to_cipher_ctx =
|
|
|
+- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(to_ctx);
|
|
|
+- memset(&to_cipher_ctx->sess, 0, sizeof(to_cipher_ctx->sess));
|
|
|
+- return cipher_init(to_ctx, cipher_ctx->sess.key, EVP_CIPHER_CTX_iv(ctx),
|
|
|
+- (cipher_ctx->op == COP_ENCRYPT));
|
|
|
+-
|
|
|
+- case EVP_CTRL_INIT:
|
|
|
+- memset(&cipher_ctx->sess, 0, sizeof(cipher_ctx->sess));
|
|
|
+- return 1;
|
|
|
+-
|
|
|
+- default:
|
|
|
+- break;
|
|
|
+- }
|
|
|
+-
|
|
|
+- return -1;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int cipher_cleanup(EVP_CIPHER_CTX *ctx)
|
|
|
+-{
|
|
|
+- struct cipher_ctx *cipher_ctx =
|
|
|
+- (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
|
+-
|
|
|
+- return clean_devcrypto_session(&cipher_ctx->sess);
|
|
|
+-}
|
|
|
+-
|
|
|
+-/*
|
|
|
+- * Keep tables of known nids, associated methods, selected ciphers, and driver
|
|
|
+- * info.
|
|
|
+- * Note that known_cipher_nids[] isn't necessarily indexed the same way as
|
|
|
+- * cipher_data[] above, which the other tables are.
|
|
|
+- */
|
|
|
+-static int known_cipher_nids[OSSL_NELEM(cipher_data)];
|
|
|
+-static int known_cipher_nids_amount = -1; /* -1 indicates not yet initialised */
|
|
|
+-static EVP_CIPHER *known_cipher_methods[OSSL_NELEM(cipher_data)] = { NULL, };
|
|
|
+-static int selected_ciphers[OSSL_NELEM(cipher_data)];
|
|
|
+-static struct driver_info_st cipher_driver_info[OSSL_NELEM(cipher_data)];
|
|
|
+-
|
|
|
+-
|
|
|
+-static int devcrypto_test_cipher(size_t cipher_data_index)
|
|
|
+-{
|
|
|
+- return (cipher_driver_info[cipher_data_index].status == DEVCRYPTO_STATUS_USABLE
|
|
|
+- && selected_ciphers[cipher_data_index] == 1
|
|
|
+- && (cipher_driver_info[cipher_data_index].accelerated
|
|
|
+- == DEVCRYPTO_ACCELERATED
|
|
|
+- || use_softdrivers == DEVCRYPTO_USE_SOFTWARE
|
|
|
+- || (cipher_driver_info[cipher_data_index].accelerated
|
|
|
+- != DEVCRYPTO_NOT_ACCELERATED
|
|
|
+- && use_softdrivers == DEVCRYPTO_REJECT_SOFTWARE)));
|
|
|
+-}
|
|
|
+-
|
|
|
+-static void prepare_cipher_methods(void)
|
|
|
+-{
|
|
|
+- size_t i;
|
|
|
+- struct session_op sess;
|
|
|
+- unsigned long cipher_mode;
|
|
|
+-#ifdef CIOCGSESSINFO
|
|
|
+- struct session_info_op siop;
|
|
|
+-#endif
|
|
|
+-
|
|
|
+- memset(&cipher_driver_info, 0, sizeof(cipher_driver_info));
|
|
|
+-
|
|
|
+- memset(&sess, 0, sizeof(sess));
|
|
|
+- sess.key = (void *)"01234567890123456789012345678901234567890123456789";
|
|
|
+-
|
|
|
+- for (i = 0, known_cipher_nids_amount = 0;
|
|
|
+- i < OSSL_NELEM(cipher_data); i++) {
|
|
|
+-
|
|
|
+- selected_ciphers[i] = 1;
|
|
|
+- /*
|
|
|
+- * Check that the cipher is usable
|
|
|
+- */
|
|
|
+- sess.cipher = cipher_data[i].devcryptoid;
|
|
|
+- sess.keylen = cipher_data[i].keylen;
|
|
|
+- if (ioctl(cfd, CIOCGSESSION, &sess) < 0) {
|
|
|
+- cipher_driver_info[i].status = DEVCRYPTO_STATUS_NO_CIOCGSESSION;
|
|
|
+- continue;
|
|
|
+- }
|
|
|
+-
|
|
|
+- cipher_mode = cipher_data[i].flags & EVP_CIPH_MODE;
|
|
|
+-
|
|
|
+- if ((known_cipher_methods[i] =
|
|
|
+- EVP_CIPHER_meth_new(cipher_data[i].nid,
|
|
|
+- cipher_mode == EVP_CIPH_CTR_MODE ? 1 :
|
|
|
+- cipher_data[i].blocksize,
|
|
|
+- cipher_data[i].keylen)) == NULL
|
|
|
+- || !EVP_CIPHER_meth_set_iv_length(known_cipher_methods[i],
|
|
|
+- cipher_data[i].ivlen)
|
|
|
+- || !EVP_CIPHER_meth_set_flags(known_cipher_methods[i],
|
|
|
+- cipher_data[i].flags
|
|
|
+- | EVP_CIPH_CUSTOM_COPY
|
|
|
+- | EVP_CIPH_CTRL_INIT
|
|
|
+- | EVP_CIPH_FLAG_DEFAULT_ASN1)
|
|
|
+- || !EVP_CIPHER_meth_set_init(known_cipher_methods[i], cipher_init)
|
|
|
+- || !EVP_CIPHER_meth_set_do_cipher(known_cipher_methods[i],
|
|
|
+- cipher_mode == EVP_CIPH_CTR_MODE ?
|
|
|
+- ctr_do_cipher :
|
|
|
+- cipher_do_cipher)
|
|
|
+- || !EVP_CIPHER_meth_set_ctrl(known_cipher_methods[i], cipher_ctrl)
|
|
|
+- || !EVP_CIPHER_meth_set_cleanup(known_cipher_methods[i],
|
|
|
+- cipher_cleanup)
|
|
|
+- || !EVP_CIPHER_meth_set_impl_ctx_size(known_cipher_methods[i],
|
|
|
+- sizeof(struct cipher_ctx))) {
|
|
|
+- cipher_driver_info[i].status = DEVCRYPTO_STATUS_FAILURE;
|
|
|
+- EVP_CIPHER_meth_free(known_cipher_methods[i]);
|
|
|
+- known_cipher_methods[i] = NULL;
|
|
|
+- } else {
|
|
|
+- cipher_driver_info[i].status = DEVCRYPTO_STATUS_USABLE;
|
|
|
+-#ifdef CIOCGSESSINFO
|
|
|
+- siop.ses = sess.ses;
|
|
|
+- if (ioctl(cfd, CIOCGSESSINFO, &siop) < 0) {
|
|
|
+- cipher_driver_info[i].accelerated = DEVCRYPTO_ACCELERATION_UNKNOWN;
|
|
|
+- } else {
|
|
|
+- cipher_driver_info[i].driver_name =
|
|
|
+- OPENSSL_strndup(siop.cipher_info.cra_driver_name,
|
|
|
+- CRYPTODEV_MAX_ALG_NAME);
|
|
|
+- if (!(siop.flags & SIOP_FLAG_KERNEL_DRIVER_ONLY))
|
|
|
+- cipher_driver_info[i].accelerated = DEVCRYPTO_NOT_ACCELERATED;
|
|
|
+- else
|
|
|
+- cipher_driver_info[i].accelerated = DEVCRYPTO_ACCELERATED;
|
|
|
+- }
|
|
|
+-#endif /* CIOCGSESSINFO */
|
|
|
+- }
|
|
|
+- ioctl(cfd, CIOCFSESSION, &sess.ses);
|
|
|
+- if (devcrypto_test_cipher(i)) {
|
|
|
+- known_cipher_nids[known_cipher_nids_amount++] =
|
|
|
+- cipher_data[i].nid;
|
|
|
+- }
|
|
|
+- }
|
|
|
+-}
|
|
|
+-
|
|
|
+-static void rebuild_known_cipher_nids(ENGINE *e)
|
|
|
+-{
|
|
|
+- size_t i;
|
|
|
+-
|
|
|
+- for (i = 0, known_cipher_nids_amount = 0; i < OSSL_NELEM(cipher_data); i++) {
|
|
|
+- if (devcrypto_test_cipher(i))
|
|
|
+- known_cipher_nids[known_cipher_nids_amount++] = cipher_data[i].nid;
|
|
|
+- }
|
|
|
+- ENGINE_unregister_ciphers(e);
|
|
|
+- ENGINE_register_ciphers(e);
|
|
|
+-}
|
|
|
+-
|
|
|
+-static const EVP_CIPHER *get_cipher_method(int nid)
|
|
|
+-{
|
|
|
+- size_t i = get_cipher_data_index(nid);
|
|
|
+-
|
|
|
+- if (i == (size_t)-1)
|
|
|
+- return NULL;
|
|
|
+- return known_cipher_methods[i];
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int get_cipher_nids(const int **nids)
|
|
|
+-{
|
|
|
+- *nids = known_cipher_nids;
|
|
|
+- return known_cipher_nids_amount;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static void destroy_cipher_method(int nid)
|
|
|
+-{
|
|
|
+- size_t i = get_cipher_data_index(nid);
|
|
|
+-
|
|
|
+- EVP_CIPHER_meth_free(known_cipher_methods[i]);
|
|
|
+- known_cipher_methods[i] = NULL;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static void destroy_all_cipher_methods(void)
|
|
|
+-{
|
|
|
+- size_t i;
|
|
|
+-
|
|
|
+- for (i = 0; i < OSSL_NELEM(cipher_data); i++) {
|
|
|
+- destroy_cipher_method(cipher_data[i].nid);
|
|
|
+- OPENSSL_free(cipher_driver_info[i].driver_name);
|
|
|
+- cipher_driver_info[i].driver_name = NULL;
|
|
|
+- }
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int devcrypto_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
|
|
|
+- const int **nids, int nid)
|
|
|
+-{
|
|
|
+- if (cipher == NULL)
|
|
|
+- return get_cipher_nids(nids);
|
|
|
+-
|
|
|
+- *cipher = get_cipher_method(nid);
|
|
|
+-
|
|
|
+- return *cipher != NULL;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static void devcrypto_select_all_ciphers(int *cipher_list)
|
|
|
+-{
|
|
|
+- size_t i;
|
|
|
+-
|
|
|
+- for (i = 0; i < OSSL_NELEM(cipher_data); i++)
|
|
|
+- cipher_list[i] = 1;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int cryptodev_select_cipher_cb(const char *str, int len, void *usr)
|
|
|
+-{
|
|
|
+- int *cipher_list = (int *)usr;
|
|
|
+- char *name;
|
|
|
+- const EVP_CIPHER *EVP;
|
|
|
+- size_t i;
|
|
|
+-
|
|
|
+- if (len == 0)
|
|
|
+- return 1;
|
|
|
+- if (usr == NULL || (name = OPENSSL_strndup(str, len)) == NULL)
|
|
|
+- return 0;
|
|
|
+- EVP = EVP_get_cipherbyname(name);
|
|
|
+- if (EVP == NULL)
|
|
|
+- fprintf(stderr, "devcrypto: unknown cipher %s\n", name);
|
|
|
+- else if ((i = find_cipher_data_index(EVP_CIPHER_nid(EVP))) != (size_t)-1)
|
|
|
+- cipher_list[i] = 1;
|
|
|
+- else
|
|
|
+- fprintf(stderr, "devcrypto: cipher %s not available\n", name);
|
|
|
+- OPENSSL_free(name);
|
|
|
+- return 1;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static void dump_cipher_info(void)
|
|
|
+-{
|
|
|
+- size_t i;
|
|
|
+- const char *name;
|
|
|
+-
|
|
|
+- fprintf (stderr, "Information about ciphers supported by the /dev/crypto"
|
|
|
+- " engine:\n");
|
|
|
+-#ifndef CIOCGSESSINFO
|
|
|
+- fprintf(stderr, "CIOCGSESSINFO (session info call) unavailable\n");
|
|
|
+-#endif
|
|
|
+- for (i = 0; i < OSSL_NELEM(cipher_data); i++) {
|
|
|
+- name = OBJ_nid2sn(cipher_data[i].nid);
|
|
|
+- fprintf (stderr, "Cipher %s, NID=%d, /dev/crypto info: id=%d, ",
|
|
|
+- name ? name : "unknown", cipher_data[i].nid,
|
|
|
+- cipher_data[i].devcryptoid);
|
|
|
+- if (cipher_driver_info[i].status == DEVCRYPTO_STATUS_NO_CIOCGSESSION ) {
|
|
|
+- fprintf (stderr, "CIOCGSESSION (session open call) failed\n");
|
|
|
+- continue;
|
|
|
+- }
|
|
|
+- fprintf (stderr, "driver=%s ", cipher_driver_info[i].driver_name ?
|
|
|
+- cipher_driver_info[i].driver_name : "unknown");
|
|
|
+- if (cipher_driver_info[i].accelerated == DEVCRYPTO_ACCELERATED)
|
|
|
+- fprintf(stderr, "(hw accelerated)");
|
|
|
+- else if (cipher_driver_info[i].accelerated == DEVCRYPTO_NOT_ACCELERATED)
|
|
|
+- fprintf(stderr, "(software)");
|
|
|
+- else
|
|
|
+- fprintf(stderr, "(acceleration status unknown)");
|
|
|
+- if (cipher_driver_info[i].status == DEVCRYPTO_STATUS_FAILURE)
|
|
|
+- fprintf (stderr, ". Cipher setup failed");
|
|
|
+- fprintf(stderr, "\n");
|
|
|
+- }
|
|
|
+- fprintf(stderr, "\n");
|
|
|
+-}
|
|
|
+-
|
|
|
+-/*
|
|
|
+- * We only support digests if the cryptodev implementation supports multiple
|
|
|
+- * data updates and session copying. Otherwise, we would be forced to maintain
|
|
|
+- * a cache, which is perilous if there's a lot of data coming in (if someone
|
|
|
+- * wants to checksum an OpenSSL tarball, for example).
|
|
|
+- */
|
|
|
+-#if defined(CIOCCPHASH) && defined(COP_FLAG_UPDATE) && defined(COP_FLAG_FINAL)
|
|
|
+-#define IMPLEMENT_DIGEST
|
|
|
+-
|
|
|
+-/******************************************************************************
|
|
|
+- *
|
|
|
+- * Digests
|
|
|
+- *
|
|
|
+- * Because they all do the same basic operation, we have only one set of
|
|
|
+- * method functions for them all to share, and a mapping table between
|
|
|
+- * NIDs and cryptodev IDs, with all the necessary size data.
|
|
|
+- *
|
|
|
+- *****/
|
|
|
+-
|
|
|
+-struct digest_ctx {
|
|
|
+- struct session_op sess;
|
|
|
+- /* This signals that the init function was called, not that it succeeded. */
|
|
|
+- int init_called;
|
|
|
+- unsigned char digest_res[HASH_MAX_LEN];
|
|
|
+-};
|
|
|
+-
|
|
|
+-static const struct digest_data_st {
|
|
|
+- int nid;
|
|
|
+- int blocksize;
|
|
|
+- int digestlen;
|
|
|
+- int devcryptoid;
|
|
|
+-} digest_data[] = {
|
|
|
+-#ifndef OPENSSL_NO_MD5
|
|
|
+- { NID_md5, /* MD5_CBLOCK */ 64, 16, CRYPTO_MD5 },
|
|
|
+-#endif
|
|
|
+- { NID_sha1, SHA_CBLOCK, 20, CRYPTO_SHA1 },
|
|
|
+-#ifndef OPENSSL_NO_RMD160
|
|
|
+-# if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_RIPEMD160)
|
|
|
+- { NID_ripemd160, /* RIPEMD160_CBLOCK */ 64, 20, CRYPTO_RIPEMD160 },
|
|
|
+-# endif
|
|
|
+-#endif
|
|
|
+-#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_224)
|
|
|
+- { NID_sha224, SHA256_CBLOCK, 224 / 8, CRYPTO_SHA2_224 },
|
|
|
+-#endif
|
|
|
+-#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_256)
|
|
|
+- { NID_sha256, SHA256_CBLOCK, 256 / 8, CRYPTO_SHA2_256 },
|
|
|
+-#endif
|
|
|
+-#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_384)
|
|
|
+- { NID_sha384, SHA512_CBLOCK, 384 / 8, CRYPTO_SHA2_384 },
|
|
|
+-#endif
|
|
|
+-#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_512)
|
|
|
+- { NID_sha512, SHA512_CBLOCK, 512 / 8, CRYPTO_SHA2_512 },
|
|
|
+-#endif
|
|
|
+-};
|
|
|
+-
|
|
|
+-static size_t find_digest_data_index(int nid)
|
|
|
+-{
|
|
|
+- size_t i;
|
|
|
+-
|
|
|
+- for (i = 0; i < OSSL_NELEM(digest_data); i++)
|
|
|
+- if (nid == digest_data[i].nid)
|
|
|
+- return i;
|
|
|
+- return (size_t)-1;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static size_t get_digest_data_index(int nid)
|
|
|
+-{
|
|
|
+- size_t i = find_digest_data_index(nid);
|
|
|
+-
|
|
|
+- if (i != (size_t)-1)
|
|
|
+- return i;
|
|
|
+-
|
|
|
+- /*
|
|
|
+- * Code further down must make sure that only NIDs in the table above
|
|
|
+- * are used. If any other NID reaches this function, there's a grave
|
|
|
+- * coding error further down.
|
|
|
+- */
|
|
|
+- assert("Code that never should be reached" == NULL);
|
|
|
+- return -1;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static const struct digest_data_st *get_digest_data(int nid)
|
|
|
+-{
|
|
|
+- return &digest_data[get_digest_data_index(nid)];
|
|
|
+-}
|
|
|
+-
|
|
|
+-/*
|
|
|
+- * Following are the five necessary functions to map OpenSSL functionality
|
|
|
+- * with cryptodev: init, update, final, cleanup, and copy.
|
|
|
+- */
|
|
|
+-
|
|
|
+-static int digest_init(EVP_MD_CTX *ctx)
|
|
|
+-{
|
|
|
+- struct digest_ctx *digest_ctx =
|
|
|
+- (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
|
+- const struct digest_data_st *digest_d =
|
|
|
+- get_digest_data(EVP_MD_CTX_type(ctx));
|
|
|
+-
|
|
|
+- digest_ctx->init_called = 1;
|
|
|
+-
|
|
|
+- memset(&digest_ctx->sess, 0, sizeof(digest_ctx->sess));
|
|
|
+- digest_ctx->sess.mac = digest_d->devcryptoid;
|
|
|
+- if (ioctl(cfd, CIOCGSESSION, &digest_ctx->sess) < 0) {
|
|
|
+- SYSerr(SYS_F_IOCTL, errno);
|
|
|
+- return 0;
|
|
|
+- }
|
|
|
+-
|
|
|
+- return 1;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int digest_op(struct digest_ctx *ctx, const void *src, size_t srclen,
|
|
|
+- void *res, unsigned int flags)
|
|
|
+-{
|
|
|
+- struct crypt_op cryp;
|
|
|
+-
|
|
|
+- memset(&cryp, 0, sizeof(cryp));
|
|
|
+- cryp.ses = ctx->sess.ses;
|
|
|
+- cryp.len = srclen;
|
|
|
+- cryp.src = (void *)src;
|
|
|
+- cryp.dst = NULL;
|
|
|
+- cryp.mac = res;
|
|
|
+- cryp.flags = flags;
|
|
|
+- return ioctl(cfd, CIOCCRYPT, &cryp);
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int digest_update(EVP_MD_CTX *ctx, const void *data, size_t count)
|
|
|
+-{
|
|
|
+- struct digest_ctx *digest_ctx =
|
|
|
+- (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
|
+-
|
|
|
+- if (count == 0)
|
|
|
+- return 1;
|
|
|
+-
|
|
|
+- if (digest_ctx == NULL)
|
|
|
+- return 0;
|
|
|
+-
|
|
|
+- if (EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT)) {
|
|
|
+- if (digest_op(digest_ctx, data, count, digest_ctx->digest_res, 0) >= 0)
|
|
|
+- return 1;
|
|
|
+- } else if (digest_op(digest_ctx, data, count, NULL, COP_FLAG_UPDATE) >= 0) {
|
|
|
+- return 1;
|
|
|
+- }
|
|
|
+-
|
|
|
+- SYSerr(SYS_F_IOCTL, errno);
|
|
|
+- return 0;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int digest_final(EVP_MD_CTX *ctx, unsigned char *md)
|
|
|
+-{
|
|
|
+- struct digest_ctx *digest_ctx =
|
|
|
+- (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
|
+-
|
|
|
+- if (md == NULL || digest_ctx == NULL)
|
|
|
+- return 0;
|
|
|
+-
|
|
|
+- if (EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT)) {
|
|
|
+- memcpy(md, digest_ctx->digest_res, EVP_MD_CTX_size(ctx));
|
|
|
+- } else if (digest_op(digest_ctx, NULL, 0, md, COP_FLAG_FINAL) < 0) {
|
|
|
+- SYSerr(SYS_F_IOCTL, errno);
|
|
|
+- return 0;
|
|
|
+- }
|
|
|
+-
|
|
|
+- return 1;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
|
|
|
+-{
|
|
|
+- struct digest_ctx *digest_from =
|
|
|
+- (struct digest_ctx *)EVP_MD_CTX_md_data(from);
|
|
|
+- struct digest_ctx *digest_to =
|
|
|
+- (struct digest_ctx *)EVP_MD_CTX_md_data(to);
|
|
|
+- struct cphash_op cphash;
|
|
|
+-
|
|
|
+- if (digest_from == NULL || digest_from->init_called != 1)
|
|
|
+- return 1;
|
|
|
+-
|
|
|
+- if (!digest_init(to)) {
|
|
|
+- SYSerr(SYS_F_IOCTL, errno);
|
|
|
+- return 0;
|
|
|
+- }
|
|
|
+-
|
|
|
+- cphash.src_ses = digest_from->sess.ses;
|
|
|
+- cphash.dst_ses = digest_to->sess.ses;
|
|
|
+- if (ioctl(cfd, CIOCCPHASH, &cphash) < 0) {
|
|
|
+- SYSerr(SYS_F_IOCTL, errno);
|
|
|
+- return 0;
|
|
|
+- }
|
|
|
+- return 1;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int digest_cleanup(EVP_MD_CTX *ctx)
|
|
|
+-{
|
|
|
+- struct digest_ctx *digest_ctx =
|
|
|
+- (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
|
+-
|
|
|
+- if (digest_ctx == NULL)
|
|
|
+- return 1;
|
|
|
+-
|
|
|
+- return clean_devcrypto_session(&digest_ctx->sess);
|
|
|
+-}
|
|
|
+-
|
|
|
+-/*
|
|
|
+- * Keep tables of known nids, associated methods, selected digests, and
|
|
|
+- * driver info.
|
|
|
+- * Note that known_digest_nids[] isn't necessarily indexed the same way as
|
|
|
+- * digest_data[] above, which the other tables are.
|
|
|
+- */
|
|
|
+-static int known_digest_nids[OSSL_NELEM(digest_data)];
|
|
|
+-static int known_digest_nids_amount = -1; /* -1 indicates not yet initialised */
|
|
|
+-static EVP_MD *known_digest_methods[OSSL_NELEM(digest_data)] = { NULL, };
|
|
|
+-static int selected_digests[OSSL_NELEM(digest_data)];
|
|
|
+-static struct driver_info_st digest_driver_info[OSSL_NELEM(digest_data)];
|
|
|
+-
|
|
|
+-static int devcrypto_test_digest(size_t digest_data_index)
|
|
|
+-{
|
|
|
+- return (digest_driver_info[digest_data_index].status == DEVCRYPTO_STATUS_USABLE
|
|
|
+- && selected_digests[digest_data_index] == 1
|
|
|
+- && (digest_driver_info[digest_data_index].accelerated
|
|
|
+- == DEVCRYPTO_ACCELERATED
|
|
|
+- || use_softdrivers == DEVCRYPTO_USE_SOFTWARE
|
|
|
+- || (digest_driver_info[digest_data_index].accelerated
|
|
|
+- != DEVCRYPTO_NOT_ACCELERATED
|
|
|
+- && use_softdrivers == DEVCRYPTO_REJECT_SOFTWARE)));
|
|
|
+-}
|
|
|
+-
|
|
|
+-static void rebuild_known_digest_nids(ENGINE *e)
|
|
|
+-{
|
|
|
+- size_t i;
|
|
|
+-
|
|
|
+- for (i = 0, known_digest_nids_amount = 0; i < OSSL_NELEM(digest_data); i++) {
|
|
|
+- if (devcrypto_test_digest(i))
|
|
|
+- known_digest_nids[known_digest_nids_amount++] = digest_data[i].nid;
|
|
|
+- }
|
|
|
+- ENGINE_unregister_digests(e);
|
|
|
+- ENGINE_register_digests(e);
|
|
|
+-}
|
|
|
+-
|
|
|
+-static void prepare_digest_methods(void)
|
|
|
+-{
|
|
|
+- size_t i;
|
|
|
+- struct session_op sess1, sess2;
|
|
|
+-#ifdef CIOCGSESSINFO
|
|
|
+- struct session_info_op siop;
|
|
|
+-#endif
|
|
|
+- struct cphash_op cphash;
|
|
|
+-
|
|
|
+- memset(&digest_driver_info, 0, sizeof(digest_driver_info));
|
|
|
+-
|
|
|
+- memset(&sess1, 0, sizeof(sess1));
|
|
|
+- memset(&sess2, 0, sizeof(sess2));
|
|
|
+-
|
|
|
+- for (i = 0, known_digest_nids_amount = 0; i < OSSL_NELEM(digest_data);
|
|
|
+- i++) {
|
|
|
+-
|
|
|
+- selected_digests[i] = 1;
|
|
|
+-
|
|
|
+- /*
|
|
|
+- * Check that the digest is usable
|
|
|
+- */
|
|
|
+- sess1.mac = digest_data[i].devcryptoid;
|
|
|
+- sess2.ses = 0;
|
|
|
+- if (ioctl(cfd, CIOCGSESSION, &sess1) < 0) {
|
|
|
+- digest_driver_info[i].status = DEVCRYPTO_STATUS_NO_CIOCGSESSION;
|
|
|
+- goto finish;
|
|
|
+- }
|
|
|
+-
|
|
|
+-#ifdef CIOCGSESSINFO
|
|
|
+- /* gather hardware acceleration info from the driver */
|
|
|
+- siop.ses = sess1.ses;
|
|
|
+- if (ioctl(cfd, CIOCGSESSINFO, &siop) < 0) {
|
|
|
+- digest_driver_info[i].accelerated = DEVCRYPTO_ACCELERATION_UNKNOWN;
|
|
|
+- } else {
|
|
|
+- digest_driver_info[i].driver_name =
|
|
|
+- OPENSSL_strndup(siop.hash_info.cra_driver_name,
|
|
|
+- CRYPTODEV_MAX_ALG_NAME);
|
|
|
+- if (siop.flags & SIOP_FLAG_KERNEL_DRIVER_ONLY)
|
|
|
+- digest_driver_info[i].accelerated = DEVCRYPTO_ACCELERATED;
|
|
|
+- else
|
|
|
+- digest_driver_info[i].accelerated = DEVCRYPTO_NOT_ACCELERATED;
|
|
|
+- }
|
|
|
+-#endif
|
|
|
+-
|
|
|
+- /* digest must be capable of hash state copy */
|
|
|
+- sess2.mac = sess1.mac;
|
|
|
+- if (ioctl(cfd, CIOCGSESSION, &sess2) < 0) {
|
|
|
+- digest_driver_info[i].status = DEVCRYPTO_STATUS_FAILURE;
|
|
|
+- goto finish;
|
|
|
+- }
|
|
|
+- cphash.src_ses = sess1.ses;
|
|
|
+- cphash.dst_ses = sess2.ses;
|
|
|
+- if (ioctl(cfd, CIOCCPHASH, &cphash) < 0) {
|
|
|
+- digest_driver_info[i].status = DEVCRYPTO_STATUS_NO_CIOCCPHASH;
|
|
|
+- goto finish;
|
|
|
+- }
|
|
|
+- if ((known_digest_methods[i] = EVP_MD_meth_new(digest_data[i].nid,
|
|
|
+- NID_undef)) == NULL
|
|
|
+- || !EVP_MD_meth_set_input_blocksize(known_digest_methods[i],
|
|
|
+- digest_data[i].blocksize)
|
|
|
+- || !EVP_MD_meth_set_result_size(known_digest_methods[i],
|
|
|
+- digest_data[i].digestlen)
|
|
|
+- || !EVP_MD_meth_set_init(known_digest_methods[i], digest_init)
|
|
|
+- || !EVP_MD_meth_set_update(known_digest_methods[i], digest_update)
|
|
|
+- || !EVP_MD_meth_set_final(known_digest_methods[i], digest_final)
|
|
|
+- || !EVP_MD_meth_set_copy(known_digest_methods[i], digest_copy)
|
|
|
+- || !EVP_MD_meth_set_cleanup(known_digest_methods[i], digest_cleanup)
|
|
|
+- || !EVP_MD_meth_set_app_datasize(known_digest_methods[i],
|
|
|
+- sizeof(struct digest_ctx))) {
|
|
|
+- digest_driver_info[i].status = DEVCRYPTO_STATUS_FAILURE;
|
|
|
+- EVP_MD_meth_free(known_digest_methods[i]);
|
|
|
+- known_digest_methods[i] = NULL;
|
|
|
+- goto finish;
|
|
|
+- }
|
|
|
+- digest_driver_info[i].status = DEVCRYPTO_STATUS_USABLE;
|
|
|
+-finish:
|
|
|
+- ioctl(cfd, CIOCFSESSION, &sess1.ses);
|
|
|
+- if (sess2.ses != 0)
|
|
|
+- ioctl(cfd, CIOCFSESSION, &sess2.ses);
|
|
|
+- if (devcrypto_test_digest(i))
|
|
|
+- known_digest_nids[known_digest_nids_amount++] = digest_data[i].nid;
|
|
|
+- }
|
|
|
+-}
|
|
|
+-
|
|
|
+-static const EVP_MD *get_digest_method(int nid)
|
|
|
+-{
|
|
|
+- size_t i = get_digest_data_index(nid);
|
|
|
+-
|
|
|
+- if (i == (size_t)-1)
|
|
|
+- return NULL;
|
|
|
+- return known_digest_methods[i];
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int get_digest_nids(const int **nids)
|
|
|
+-{
|
|
|
+- *nids = known_digest_nids;
|
|
|
+- return known_digest_nids_amount;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static void destroy_digest_method(int nid)
|
|
|
+-{
|
|
|
+- size_t i = get_digest_data_index(nid);
|
|
|
+-
|
|
|
+- EVP_MD_meth_free(known_digest_methods[i]);
|
|
|
+- known_digest_methods[i] = NULL;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static void destroy_all_digest_methods(void)
|
|
|
+-{
|
|
|
+- size_t i;
|
|
|
+-
|
|
|
+- for (i = 0; i < OSSL_NELEM(digest_data); i++) {
|
|
|
+- destroy_digest_method(digest_data[i].nid);
|
|
|
+- OPENSSL_free(digest_driver_info[i].driver_name);
|
|
|
+- digest_driver_info[i].driver_name = NULL;
|
|
|
+- }
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int devcrypto_digests(ENGINE *e, const EVP_MD **digest,
|
|
|
+- const int **nids, int nid)
|
|
|
+-{
|
|
|
+- if (digest == NULL)
|
|
|
+- return get_digest_nids(nids);
|
|
|
+-
|
|
|
+- *digest = get_digest_method(nid);
|
|
|
+-
|
|
|
+- return *digest != NULL;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static void devcrypto_select_all_digests(int *digest_list)
|
|
|
+-{
|
|
|
+- size_t i;
|
|
|
+-
|
|
|
+- for (i = 0; i < OSSL_NELEM(digest_data); i++)
|
|
|
+- digest_list[i] = 1;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static int cryptodev_select_digest_cb(const char *str, int len, void *usr)
|
|
|
+-{
|
|
|
+- int *digest_list = (int *)usr;
|
|
|
+- char *name;
|
|
|
+- const EVP_MD *EVP;
|
|
|
+- size_t i;
|
|
|
+-
|
|
|
+- if (len == 0)
|
|
|
+- return 1;
|
|
|
+- if (usr == NULL || (name = OPENSSL_strndup(str, len)) == NULL)
|
|
|
+- return 0;
|
|
|
+- EVP = EVP_get_digestbyname(name);
|
|
|
+- if (EVP == NULL)
|
|
|
+- fprintf(stderr, "devcrypto: unknown digest %s\n", name);
|
|
|
+- else if ((i = find_digest_data_index(EVP_MD_type(EVP))) != (size_t)-1)
|
|
|
+- digest_list[i] = 1;
|
|
|
+- else
|
|
|
+- fprintf(stderr, "devcrypto: digest %s not available\n", name);
|
|
|
+- OPENSSL_free(name);
|
|
|
+- return 1;
|
|
|
+-}
|
|
|
+-
|
|
|
+-static void dump_digest_info(void)
|
|
|
+-{
|
|
|
+- size_t i;
|
|
|
+- const char *name;
|
|
|
+-
|
|
|
+- fprintf (stderr, "Information about digests supported by the /dev/crypto"
|
|
|
+- " engine:\n");
|
|
|
+-#ifndef CIOCGSESSINFO
|
|
|
+- fprintf(stderr, "CIOCGSESSINFO (session info call) unavailable\n");
|
|
|
+-#endif
|
|
|
+-
|
|
|
+- for (i = 0; i < OSSL_NELEM(digest_data); i++) {
|
|
|
+- name = OBJ_nid2sn(digest_data[i].nid);
|
|
|
+- fprintf (stderr, "Digest %s, NID=%d, /dev/crypto info: id=%d, driver=%s",
|
|
|
+- name ? name : "unknown", digest_data[i].nid,
|
|
|
+- digest_data[i].devcryptoid,
|
|
|
+- digest_driver_info[i].driver_name ? digest_driver_info[i].driver_name : "unknown");
|
|
|
+- if (digest_driver_info[i].status == DEVCRYPTO_STATUS_NO_CIOCGSESSION) {
|
|
|
+- fprintf (stderr, ". CIOCGSESSION (session open) failed\n");
|
|
|
+- continue;
|
|
|
+- }
|
|
|
+- if (digest_driver_info[i].accelerated == DEVCRYPTO_ACCELERATED)
|
|
|
+- fprintf(stderr, " (hw accelerated)");
|
|
|
+- else if (digest_driver_info[i].accelerated == DEVCRYPTO_NOT_ACCELERATED)
|
|
|
+- fprintf(stderr, " (software)");
|
|
|
+- else
|
|
|
+- fprintf(stderr, " (acceleration status unknown)");
|
|
|
+- if (cipher_driver_info[i].status == DEVCRYPTO_STATUS_FAILURE)
|
|
|
+- fprintf (stderr, ". Cipher setup failed\n");
|
|
|
+- else if (digest_driver_info[i].status == DEVCRYPTO_STATUS_NO_CIOCCPHASH)
|
|
|
+- fprintf(stderr, ", CIOCCPHASH failed\n");
|
|
|
+- else
|
|
|
+- fprintf(stderr, ", CIOCCPHASH capable\n");
|
|
|
+- }
|
|
|
+- fprintf(stderr, "\n");
|
|
|
+-}
|
|
|
+-
|
|
|
+-#endif
|
|
|
+-
|
|
|
+-/******************************************************************************
|
|
|
+- *
|
|
|
+- * CONTROL COMMANDS
|
|
|
+- *
|
|
|
+- *****/
|
|
|
+-
|
|
|
+-#define DEVCRYPTO_CMD_USE_SOFTDRIVERS ENGINE_CMD_BASE
|
|
|
+-#define DEVCRYPTO_CMD_CIPHERS (ENGINE_CMD_BASE + 1)
|
|
|
+-#define DEVCRYPTO_CMD_DIGESTS (ENGINE_CMD_BASE + 2)
|
|
|
+-#define DEVCRYPTO_CMD_DUMP_INFO (ENGINE_CMD_BASE + 3)
|
|
|
+-
|
|
|
+-/* Helper macros for CPP string composition */
|
|
|
+-#ifndef OPENSSL_MSTR
|
|
|
+-# define OPENSSL_MSTR_HELPER(x) #x
|
|
|
+-# define OPENSSL_MSTR(x) OPENSSL_MSTR_HELPER(x)
|
|
|
+-#endif
|
|
|
+-
|
|
|
+-static const ENGINE_CMD_DEFN devcrypto_cmds[] = {
|
|
|
+-#ifdef CIOCGSESSINFO
|
|
|
+- {DEVCRYPTO_CMD_USE_SOFTDRIVERS,
|
|
|
+- "USE_SOFTDRIVERS",
|
|
|
+- "specifies whether to use software (not accelerated) drivers ("
|
|
|
+- OPENSSL_MSTR(DEVCRYPTO_REQUIRE_ACCELERATED) "=use only accelerated drivers, "
|
|
|
+- OPENSSL_MSTR(DEVCRYPTO_USE_SOFTWARE) "=allow all drivers, "
|
|
|
+- OPENSSL_MSTR(DEVCRYPTO_REJECT_SOFTWARE)
|
|
|
+- "=use if acceleration can't be determined) [default="
|
|
|
+- OPENSSL_MSTR(DEVCRYPTO_DEFAULT_USE_SOFDTRIVERS) "]",
|
|
|
+- ENGINE_CMD_FLAG_NUMERIC},
|
|
|
+-#endif
|
|
|
+-
|
|
|
+- {DEVCRYPTO_CMD_CIPHERS,
|
|
|
+- "CIPHERS",
|
|
|
+- "either ALL, NONE, or a comma-separated list of ciphers to enable [default=ALL]",
|
|
|
+- ENGINE_CMD_FLAG_STRING},
|
|
|
+-
|
|
|
+-#ifdef IMPLEMENT_DIGEST
|
|
|
+- {DEVCRYPTO_CMD_DIGESTS,
|
|
|
+- "DIGESTS",
|
|
|
+- "either ALL, NONE, or a comma-separated list of digests to enable [default=ALL]",
|
|
|
+- ENGINE_CMD_FLAG_STRING},
|
|
|
+-#endif
|
|
|
+-
|
|
|
+- {DEVCRYPTO_CMD_DUMP_INFO,
|
|
|
+- "DUMP_INFO",
|
|
|
+- "dump info about each algorithm to stderr; use 'openssl engine -pre DUMP_INFO devcrypto'",
|
|
|
+- ENGINE_CMD_FLAG_NO_INPUT},
|
|
|
+-
|
|
|
+- {0, NULL, NULL, 0}
|
|
|
+-};
|
|
|
+-
|
|
|
+-static int devcrypto_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
|
|
|
+-{
|
|
|
+- int *new_list;
|
|
|
+- switch (cmd) {
|
|
|
+-#ifdef CIOCGSESSINFO
|
|
|
+- case DEVCRYPTO_CMD_USE_SOFTDRIVERS:
|
|
|
+- switch (i) {
|
|
|
+- case DEVCRYPTO_REQUIRE_ACCELERATED:
|
|
|
+- case DEVCRYPTO_USE_SOFTWARE:
|
|
|
+- case DEVCRYPTO_REJECT_SOFTWARE:
|
|
|
+- break;
|
|
|
+- default:
|
|
|
+- fprintf(stderr, "devcrypto: invalid value (%ld) for USE_SOFTDRIVERS\n", i);
|
|
|
+- return 0;
|
|
|
+- }
|
|
|
+- if (use_softdrivers == i)
|
|
|
+- return 1;
|
|
|
+- use_softdrivers = i;
|
|
|
+-#ifdef IMPLEMENT_DIGEST
|
|
|
+- rebuild_known_digest_nids(e);
|
|
|
+-#endif
|
|
|
+- rebuild_known_cipher_nids(e);
|
|
|
+- return 1;
|
|
|
+-#endif /* CIOCGSESSINFO */
|
|
|
+-
|
|
|
+- case DEVCRYPTO_CMD_CIPHERS:
|
|
|
+- if (p == NULL)
|
|
|
+- return 1;
|
|
|
+- if (strcasecmp((const char *)p, "ALL") == 0) {
|
|
|
+- devcrypto_select_all_ciphers(selected_ciphers);
|
|
|
+- } else if (strcasecmp((const char*)p, "NONE") == 0) {
|
|
|
+- memset(selected_ciphers, 0, sizeof(selected_ciphers));
|
|
|
+- } else {
|
|
|
+- new_list=OPENSSL_zalloc(sizeof(selected_ciphers));
|
|
|
+- if (!CONF_parse_list(p, ',', 1, cryptodev_select_cipher_cb, new_list)) {
|
|
|
+- OPENSSL_free(new_list);
|
|
|
+- return 0;
|
|
|
+- }
|
|
|
+- memcpy(selected_ciphers, new_list, sizeof(selected_ciphers));
|
|
|
+- OPENSSL_free(new_list);
|
|
|
+- }
|
|
|
+- rebuild_known_cipher_nids(e);
|
|
|
+- return 1;
|
|
|
+-
|
|
|
+-#ifdef IMPLEMENT_DIGEST
|
|
|
+- case DEVCRYPTO_CMD_DIGESTS:
|
|
|
+- if (p == NULL)
|
|
|
+- return 1;
|
|
|
+- if (strcasecmp((const char *)p, "ALL") == 0) {
|
|
|
+- devcrypto_select_all_digests(selected_digests);
|
|
|
+- } else if (strcasecmp((const char*)p, "NONE") == 0) {
|
|
|
+- memset(selected_digests, 0, sizeof(selected_digests));
|
|
|
+- } else {
|
|
|
+- new_list=OPENSSL_zalloc(sizeof(selected_digests));
|
|
|
+- if (!CONF_parse_list(p, ',', 1, cryptodev_select_digest_cb, new_list)) {
|
|
|
+- OPENSSL_free(new_list);
|
|
|
+- return 0;
|
|
|
+- }
|
|
|
+- memcpy(selected_digests, new_list, sizeof(selected_digests));
|
|
|
+- OPENSSL_free(new_list);
|
|
|
+- }
|
|
|
+- rebuild_known_digest_nids(e);
|
|
|
+- return 1;
|
|
|
+-#endif /* IMPLEMENT_DIGEST */
|
|
|
+-
|
|
|
+- case DEVCRYPTO_CMD_DUMP_INFO:
|
|
|
+- dump_cipher_info();
|
|
|
+-#ifdef IMPLEMENT_DIGEST
|
|
|
+- dump_digest_info();
|
|
|
+-#endif
|
|
|
+- return 1;
|
|
|
+-
|
|
|
+- default:
|
|
|
+- break;
|
|
|
+- }
|
|
|
+- return 0;
|
|
|
+-}
|
|
|
+-
|
|
|
+-/******************************************************************************
|
|
|
+- *
|
|
|
+- * LOAD / UNLOAD
|
|
|
+- *
|
|
|
+- *****/
|
|
|
+-
|
|
|
+-static int devcrypto_unload(ENGINE *e)
|
|
|
+-{
|
|
|
+- destroy_all_cipher_methods();
|
|
|
+-#ifdef IMPLEMENT_DIGEST
|
|
|
+- destroy_all_digest_methods();
|
|
|
+-#endif
|
|
|
+-
|
|
|
+- close(cfd);
|
|
|
+-
|
|
|
+- return 1;
|
|
|
+-}
|
|
|
+-/*
|
|
|
+- * This engine is always built into libcrypto, so it doesn't offer any
|
|
|
+- * ability to be dynamically loadable.
|
|
|
+- */
|
|
|
+-void engine_load_devcrypto_int()
|
|
|
+-{
|
|
|
+- ENGINE *e = NULL;
|
|
|
+-
|
|
|
+- if ((cfd = open("/dev/crypto", O_RDWR, 0)) < 0) {
|
|
|
+-#ifndef ENGINE_DEVCRYPTO_DEBUG
|
|
|
+- if (errno != ENOENT)
|
|
|
+-#endif
|
|
|
+- fprintf(stderr, "Could not open /dev/crypto: %s\n", strerror(errno));
|
|
|
+- return;
|
|
|
+- }
|
|
|
+-
|
|
|
+- if ((e = ENGINE_new()) == NULL
|
|
|
+- || !ENGINE_set_destroy_function(e, devcrypto_unload)) {
|
|
|
+- ENGINE_free(e);
|
|
|
+- /*
|
|
|
+- * We know that devcrypto_unload() won't be called when one of the
|
|
|
+- * above two calls have failed, so we close cfd explicitly here to
|
|
|
+- * avoid leaking resources.
|
|
|
+- */
|
|
|
+- close(cfd);
|
|
|
+- return;
|
|
|
+- }
|
|
|
+-
|
|
|
+- prepare_cipher_methods();
|
|
|
+-#ifdef IMPLEMENT_DIGEST
|
|
|
+- prepare_digest_methods();
|
|
|
+-#endif
|
|
|
+-
|
|
|
+- if (!ENGINE_set_id(e, "devcrypto")
|
|
|
+- || !ENGINE_set_name(e, "/dev/crypto engine")
|
|
|
+- || !ENGINE_set_cmd_defns(e, devcrypto_cmds)
|
|
|
+- || !ENGINE_set_ctrl_function(e, devcrypto_ctrl)
|
|
|
+-
|
|
|
+-/*
|
|
|
+- * Asymmetric ciphers aren't well supported with /dev/crypto. Among the BSD
|
|
|
+- * implementations, it seems to only exist in FreeBSD, and regarding the
|
|
|
+- * parameters in its crypt_kop, the manual crypto(4) has this to say:
|
|
|
+- *
|
|
|
+- * The semantics of these arguments are currently undocumented.
|
|
|
+- *
|
|
|
+- * Reading through the FreeBSD source code doesn't give much more than
|
|
|
+- * their CRK_MOD_EXP implementation for ubsec.
|
|
|
+- *
|
|
|
+- * It doesn't look much better with cryptodev-linux. They have the crypt_kop
|
|
|
+- * structure as well as the command (CRK_*) in cryptodev.h, but no support
|
|
|
+- * seems to be implemented at all for the moment.
|
|
|
+- *
|
|
|
+- * At the time of writing, it seems impossible to write proper support for
|
|
|
+- * FreeBSD's asym features without some very deep knowledge and access to
|
|
|
+- * specific kernel modules.
|
|
|
+- *
|
|
|
+- * /Richard Levitte, 2017-05-11
|
|
|
+- */
|
|
|
+-#if 0
|
|
|
+-# ifndef OPENSSL_NO_RSA
|
|
|
+- || !ENGINE_set_RSA(e, devcrypto_rsa)
|
|
|
+-# endif
|
|
|
+-# ifndef OPENSSL_NO_DSA
|
|
|
+- || !ENGINE_set_DSA(e, devcrypto_dsa)
|
|
|
+-# endif
|
|
|
+-# ifndef OPENSSL_NO_DH
|
|
|
+- || !ENGINE_set_DH(e, devcrypto_dh)
|
|
|
+-# endif
|
|
|
+-# ifndef OPENSSL_NO_EC
|
|
|
+- || !ENGINE_set_EC(e, devcrypto_ec)
|
|
|
+-# endif
|
|
|
+-#endif
|
|
|
+- || !ENGINE_set_ciphers(e, devcrypto_ciphers)
|
|
|
+-#ifdef IMPLEMENT_DIGEST
|
|
|
+- || !ENGINE_set_digests(e, devcrypto_digests)
|
|
|
+-#endif
|
|
|
+- ) {
|
|
|
+- ENGINE_free(e);
|
|
|
+- return;
|
|
|
+- }
|
|
|
+-
|
|
|
+- ENGINE_add(e);
|
|
|
+- ENGINE_free(e); /* Loose our local reference */
|
|
|
+- ERR_clear_error();
|
|
|
+-}
|
|
|
+--- /dev/null
|
|
|
++++ b/engines/e_devcrypto.c
|
|
|
+@@ -0,0 +1,1315 @@
|
|
|
++/*
|
|
|
++ * Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
++ *
|
|
|
++ * Licensed under the OpenSSL license (the "License"). You may not use
|
|
|
++ * this file except in compliance with the License. You can obtain a copy
|
|
|
++ * in the file LICENSE in the source distribution or at
|
|
|
++ * https://www.openssl.org/source/license.html
|
|
|
++ */
|
|
|
++
|
|
|
++#include "../e_os.h"
|
|
|
++#include <string.h>
|
|
|
++#include <sys/types.h>
|
|
|
++#include <sys/stat.h>
|
|
|
++#include <fcntl.h>
|
|
|
++#include <sys/ioctl.h>
|
|
|
++#include <unistd.h>
|
|
|
++#include <assert.h>
|
|
|
++
|
|
|
++#include <openssl/conf.h>
|
|
|
++#include <openssl/evp.h>
|
|
|
++#include <openssl/err.h>
|
|
|
++#include <openssl/engine.h>
|
|
|
++#include <openssl/objects.h>
|
|
|
++#include <crypto/cryptodev.h>
|
|
|
++
|
|
|
++/* #define ENGINE_DEVCRYPTO_DEBUG */
|
|
|
++
|
|
|
++#ifdef CRYPTO_ALGORITHM_MIN
|
|
|
++# define CHECK_BSD_STYLE_MACROS
|
|
|
++#endif
|
|
|
++
|
|
|
++#define engine_devcrypto_id "devcrypto"
|
|
|
++
|
|
|
++/*
|
|
|
++ * ONE global file descriptor for all sessions. This allows operations
|
|
|
++ * such as digest session data copying (see digest_copy()), but is also
|
|
|
++ * saner... why re-open /dev/crypto for every session?
|
|
|
++ */
|
|
|
++static int cfd = -1;
|
|
|
++#define DEVCRYPTO_REQUIRE_ACCELERATED 0 /* require confirmation of acceleration */
|
|
|
++#define DEVCRYPTO_USE_SOFTWARE 1 /* allow software drivers */
|
|
|
++#define DEVCRYPTO_REJECT_SOFTWARE 2 /* only disallow confirmed software drivers */
|
|
|
++
|
|
|
++#define DEVCRYPTO_DEFAULT_USE_SOFTDRIVERS DEVCRYPTO_REJECT_SOFTWARE
|
|
|
++static int use_softdrivers = DEVCRYPTO_DEFAULT_USE_SOFTDRIVERS;
|
|
|
++
|
|
|
++/*
|
|
|
++ * cipher/digest status & acceleration definitions
|
|
|
++ * Make sure the defaults are set to 0
|
|
|
++ */
|
|
|
++struct driver_info_st {
|
|
|
++ enum devcrypto_status_t {
|
|
|
++ DEVCRYPTO_STATUS_FAILURE = -3, /* unusable for other reason */
|
|
|
++ DEVCRYPTO_STATUS_NO_CIOCCPHASH = -2, /* hash state copy not supported */
|
|
|
++ DEVCRYPTO_STATUS_NO_CIOCGSESSION = -1, /* session open failed */
|
|
|
++ DEVCRYPTO_STATUS_UNKNOWN = 0, /* not tested yet */
|
|
|
++ DEVCRYPTO_STATUS_USABLE = 1 /* algo can be used */
|
|
|
++ } status;
|
|
|
++
|
|
|
++ enum devcrypto_accelerated_t {
|
|
|
++ DEVCRYPTO_NOT_ACCELERATED = -1, /* software implemented */
|
|
|
++ DEVCRYPTO_ACCELERATION_UNKNOWN = 0, /* acceleration support unkown */
|
|
|
++ DEVCRYPTO_ACCELERATED = 1 /* hardware accelerated */
|
|
|
++ } accelerated;
|
|
|
++
|
|
|
++ char *driver_name;
|
|
|
++};
|
|
|
++
|
|
|
++#ifdef OPENSSL_NO_DYNAMIC_ENGINE
|
|
|
++void engine_load_devcrypto_int(void);
|
|
|
++#endif
|
|
|
++
|
|
|
++static int clean_devcrypto_session(struct session_op *sess) {
|
|
|
++ if (ioctl(cfd, CIOCFSESSION, &sess->ses) < 0) {
|
|
|
++ SYSerr(SYS_F_IOCTL, errno);
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++ memset(sess, 0, sizeof(struct session_op));
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++/******************************************************************************
|
|
|
++ *
|
|
|
++ * Ciphers
|
|
|
++ *
|
|
|
++ * Because they all do the same basic operation, we have only one set of
|
|
|
++ * method functions for them all to share, and a mapping table between
|
|
|
++ * NIDs and cryptodev IDs, with all the necessary size data.
|
|
|
++ *
|
|
|
++ *****/
|
|
|
++
|
|
|
++struct cipher_ctx {
|
|
|
++ struct session_op sess;
|
|
|
++ int op; /* COP_ENCRYPT or COP_DECRYPT */
|
|
|
++ unsigned long mode; /* EVP_CIPH_*_MODE */
|
|
|
++
|
|
|
++ /* to handle ctr mode being a stream cipher */
|
|
|
++ unsigned char partial[EVP_MAX_BLOCK_LENGTH];
|
|
|
++ unsigned int blocksize, num;
|
|
|
++};
|
|
|
++
|
|
|
++static const struct cipher_data_st {
|
|
|
++ int nid;
|
|
|
++ int blocksize;
|
|
|
++ int keylen;
|
|
|
++ int ivlen;
|
|
|
++ int flags;
|
|
|
++ int devcryptoid;
|
|
|
++} cipher_data[] = {
|
|
|
++#ifndef OPENSSL_NO_DES
|
|
|
++ { NID_des_cbc, 8, 8, 8, EVP_CIPH_CBC_MODE, CRYPTO_DES_CBC },
|
|
|
++ { NID_des_ede3_cbc, 8, 24, 8, EVP_CIPH_CBC_MODE, CRYPTO_3DES_CBC },
|
|
|
++#endif
|
|
|
++#ifndef OPENSSL_NO_BF
|
|
|
++ { NID_bf_cbc, 8, 16, 8, EVP_CIPH_CBC_MODE, CRYPTO_BLF_CBC },
|
|
|
++#endif
|
|
|
++#ifndef OPENSSL_NO_CAST
|
|
|
++ { NID_cast5_cbc, 8, 16, 8, EVP_CIPH_CBC_MODE, CRYPTO_CAST_CBC },
|
|
|
++#endif
|
|
|
++ { NID_aes_128_cbc, 16, 128 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC },
|
|
|
++ { NID_aes_192_cbc, 16, 192 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC },
|
|
|
++ { NID_aes_256_cbc, 16, 256 / 8, 16, EVP_CIPH_CBC_MODE, CRYPTO_AES_CBC },
|
|
|
++#ifndef OPENSSL_NO_RC4
|
|
|
++ { NID_rc4, 1, 16, 0, EVP_CIPH_STREAM_CIPHER, CRYPTO_ARC4 },
|
|
|
++#endif
|
|
|
++#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_AES_CTR)
|
|
|
++ { NID_aes_128_ctr, 16, 128 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR },
|
|
|
++ { NID_aes_192_ctr, 16, 192 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR },
|
|
|
++ { NID_aes_256_ctr, 16, 256 / 8, 16, EVP_CIPH_CTR_MODE, CRYPTO_AES_CTR },
|
|
|
++#endif
|
|
|
++#if 0 /* Not yet supported */
|
|
|
++ { NID_aes_128_xts, 16, 128 / 8 * 2, 16, EVP_CIPH_XTS_MODE, CRYPTO_AES_XTS },
|
|
|
++ { NID_aes_256_xts, 16, 256 / 8 * 2, 16, EVP_CIPH_XTS_MODE, CRYPTO_AES_XTS },
|
|
|
++#endif
|
|
|
++#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_AES_ECB)
|
|
|
++ { NID_aes_128_ecb, 16, 128 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
|
|
|
++ { NID_aes_192_ecb, 16, 192 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
|
|
|
++ { NID_aes_256_ecb, 16, 256 / 8, 0, EVP_CIPH_ECB_MODE, CRYPTO_AES_ECB },
|
|
|
++#endif
|
|
|
++#if 0 /* Not yet supported */
|
|
|
++ { NID_aes_128_gcm, 16, 128 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
|
|
|
++ { NID_aes_192_gcm, 16, 192 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
|
|
|
++ { NID_aes_256_gcm, 16, 256 / 8, 16, EVP_CIPH_GCM_MODE, CRYPTO_AES_GCM },
|
|
|
++#endif
|
|
|
++#ifndef OPENSSL_NO_CAMELLIA
|
|
|
++ { NID_camellia_128_cbc, 16, 128 / 8, 16, EVP_CIPH_CBC_MODE,
|
|
|
++ CRYPTO_CAMELLIA_CBC },
|
|
|
++ { NID_camellia_192_cbc, 16, 192 / 8, 16, EVP_CIPH_CBC_MODE,
|
|
|
++ CRYPTO_CAMELLIA_CBC },
|
|
|
++ { NID_camellia_256_cbc, 16, 256 / 8, 16, EVP_CIPH_CBC_MODE,
|
|
|
++ CRYPTO_CAMELLIA_CBC },
|
|
|
++#endif
|
|
|
++};
|
|
|
++
|
|
|
++static size_t find_cipher_data_index(int nid)
|
|
|
++{
|
|
|
++ size_t i;
|
|
|
++
|
|
|
++ for (i = 0; i < OSSL_NELEM(cipher_data); i++)
|
|
|
++ if (nid == cipher_data[i].nid)
|
|
|
++ return i;
|
|
|
++ return (size_t)-1;
|
|
|
++}
|
|
|
++
|
|
|
++static size_t get_cipher_data_index(int nid)
|
|
|
++{
|
|
|
++ size_t i = find_cipher_data_index(nid);
|
|
|
++
|
|
|
++ if (i != (size_t)-1)
|
|
|
++ return i;
|
|
|
++
|
|
|
++ /*
|
|
|
++ * Code further down must make sure that only NIDs in the table above
|
|
|
++ * are used. If any other NID reaches this function, there's a grave
|
|
|
++ * coding error further down.
|
|
|
++ */
|
|
|
++ assert("Code that never should be reached" == NULL);
|
|
|
++ return -1;
|
|
|
++}
|
|
|
++
|
|
|
++static const struct cipher_data_st *get_cipher_data(int nid)
|
|
|
++{
|
|
|
++ return &cipher_data[get_cipher_data_index(nid)];
|
|
|
++}
|
|
|
++
|
|
|
++/*
|
|
|
++ * Following are the three necessary functions to map OpenSSL functionality
|
|
|
++ * with cryptodev.
|
|
|
++ */
|
|
|
++
|
|
|
++static int cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
|
|
++ const unsigned char *iv, int enc)
|
|
|
++{
|
|
|
++ struct cipher_ctx *cipher_ctx =
|
|
|
++ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
|
++ const struct cipher_data_st *cipher_d =
|
|
|
++ get_cipher_data(EVP_CIPHER_CTX_nid(ctx));
|
|
|
++
|
|
|
++ /* cleanup a previous session */
|
|
|
++ if (cipher_ctx->sess.ses != 0 &&
|
|
|
++ clean_devcrypto_session(&cipher_ctx->sess) == 0)
|
|
|
++ return 0;
|
|
|
++
|
|
|
++ cipher_ctx->sess.cipher = cipher_d->devcryptoid;
|
|
|
++ cipher_ctx->sess.keylen = cipher_d->keylen;
|
|
|
++ cipher_ctx->sess.key = (void *)key;
|
|
|
++ cipher_ctx->op = enc ? COP_ENCRYPT : COP_DECRYPT;
|
|
|
++ cipher_ctx->mode = cipher_d->flags & EVP_CIPH_MODE;
|
|
|
++ cipher_ctx->blocksize = cipher_d->blocksize;
|
|
|
++ if (ioctl(cfd, CIOCGSESSION, &cipher_ctx->sess) < 0) {
|
|
|
++ SYSerr(SYS_F_IOCTL, errno);
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++static int cipher_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
|
++ const unsigned char *in, size_t inl)
|
|
|
++{
|
|
|
++ struct cipher_ctx *cipher_ctx =
|
|
|
++ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
|
++ struct crypt_op cryp;
|
|
|
++ unsigned char *iv = EVP_CIPHER_CTX_iv_noconst(ctx);
|
|
|
++#if !defined(COP_FLAG_WRITE_IV)
|
|
|
++ unsigned char saved_iv[EVP_MAX_IV_LENGTH];
|
|
|
++ const unsigned char *ivptr;
|
|
|
++ size_t nblocks, ivlen;
|
|
|
++#endif
|
|
|
++
|
|
|
++ memset(&cryp, 0, sizeof(cryp));
|
|
|
++ cryp.ses = cipher_ctx->sess.ses;
|
|
|
++ cryp.len = inl;
|
|
|
++ cryp.src = (void *)in;
|
|
|
++ cryp.dst = (void *)out;
|
|
|
++ cryp.iv = (void *)iv;
|
|
|
++ cryp.op = cipher_ctx->op;
|
|
|
++#if !defined(COP_FLAG_WRITE_IV)
|
|
|
++ cryp.flags = 0;
|
|
|
++
|
|
|
++ ivlen = EVP_CIPHER_CTX_iv_length(ctx);
|
|
|
++ if (ivlen > 0)
|
|
|
++ switch (cipher_ctx->mode) {
|
|
|
++ case EVP_CIPH_CBC_MODE:
|
|
|
++ assert(inl >= ivlen);
|
|
|
++ if (!EVP_CIPHER_CTX_encrypting(ctx)) {
|
|
|
++ ivptr = in + inl - ivlen;
|
|
|
++ memcpy(saved_iv, ivptr, ivlen);
|
|
|
++ }
|
|
|
++ break;
|
|
|
++
|
|
|
++ case EVP_CIPH_CTR_MODE:
|
|
|
++ break;
|
|
|
++
|
|
|
++ default: /* should not happen */
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++#else
|
|
|
++ cryp.flags = COP_FLAG_WRITE_IV;
|
|
|
++#endif
|
|
|
++
|
|
|
++ if (ioctl(cfd, CIOCCRYPT, &cryp) < 0) {
|
|
|
++ SYSerr(SYS_F_IOCTL, errno);
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++
|
|
|
++#if !defined(COP_FLAG_WRITE_IV)
|
|
|
++ if (ivlen > 0)
|
|
|
++ switch (cipher_ctx->mode) {
|
|
|
++ case EVP_CIPH_CBC_MODE:
|
|
|
++ assert(inl >= ivlen);
|
|
|
++ if (EVP_CIPHER_CTX_encrypting(ctx))
|
|
|
++ ivptr = out + inl - ivlen;
|
|
|
++ else
|
|
|
++ ivptr = saved_iv;
|
|
|
++
|
|
|
++ memcpy(iv, ivptr, ivlen);
|
|
|
++ break;
|
|
|
++
|
|
|
++ case EVP_CIPH_CTR_MODE:
|
|
|
++ nblocks = (inl + cipher_ctx->blocksize - 1)
|
|
|
++ / cipher_ctx->blocksize;
|
|
|
++ do {
|
|
|
++ ivlen--;
|
|
|
++ nblocks += iv[ivlen];
|
|
|
++ iv[ivlen] = (uint8_t) nblocks;
|
|
|
++ nblocks >>= 8;
|
|
|
++ } while (ivlen);
|
|
|
++ break;
|
|
|
++
|
|
|
++ default: /* should not happen */
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++#endif
|
|
|
++
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++static int ctr_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
|
|
++ const unsigned char *in, size_t inl)
|
|
|
++{
|
|
|
++ struct cipher_ctx *cipher_ctx =
|
|
|
++ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
|
++ size_t nblocks, len;
|
|
|
++
|
|
|
++ /* initial partial block */
|
|
|
++ while (cipher_ctx->num && inl) {
|
|
|
++ (*out++) = *(in++) ^ cipher_ctx->partial[cipher_ctx->num];
|
|
|
++ --inl;
|
|
|
++ cipher_ctx->num = (cipher_ctx->num + 1) % cipher_ctx->blocksize;
|
|
|
++ }
|
|
|
++
|
|
|
++ /* full blocks */
|
|
|
++ if (inl > (unsigned int) cipher_ctx->blocksize) {
|
|
|
++ nblocks = inl/cipher_ctx->blocksize;
|
|
|
++ len = nblocks * cipher_ctx->blocksize;
|
|
|
++ if (cipher_do_cipher(ctx, out, in, len) < 1)
|
|
|
++ return 0;
|
|
|
++ inl -= len;
|
|
|
++ out += len;
|
|
|
++ in += len;
|
|
|
++ }
|
|
|
++
|
|
|
++ /* final partial block */
|
|
|
++ if (inl) {
|
|
|
++ memset(cipher_ctx->partial, 0, cipher_ctx->blocksize);
|
|
|
++ if (cipher_do_cipher(ctx, cipher_ctx->partial, cipher_ctx->partial,
|
|
|
++ cipher_ctx->blocksize) < 1)
|
|
|
++ return 0;
|
|
|
++ while (inl--) {
|
|
|
++ out[cipher_ctx->num] = in[cipher_ctx->num]
|
|
|
++ ^ cipher_ctx->partial[cipher_ctx->num];
|
|
|
++ cipher_ctx->num++;
|
|
|
++ }
|
|
|
++ }
|
|
|
++
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++static int cipher_ctrl(EVP_CIPHER_CTX *ctx, int type, int p1, void* p2)
|
|
|
++{
|
|
|
++ struct cipher_ctx *cipher_ctx =
|
|
|
++ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
|
++ EVP_CIPHER_CTX *to_ctx = (EVP_CIPHER_CTX *)p2;
|
|
|
++ struct cipher_ctx *to_cipher_ctx;
|
|
|
++
|
|
|
++ switch (type) {
|
|
|
++
|
|
|
++ case EVP_CTRL_COPY:
|
|
|
++ if (cipher_ctx == NULL)
|
|
|
++ return 1;
|
|
|
++ /* when copying the context, a new session needs to be initialized */
|
|
|
++ to_cipher_ctx =
|
|
|
++ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(to_ctx);
|
|
|
++ memset(&to_cipher_ctx->sess, 0, sizeof(to_cipher_ctx->sess));
|
|
|
++ return cipher_init(to_ctx, cipher_ctx->sess.key, EVP_CIPHER_CTX_iv(ctx),
|
|
|
++ (cipher_ctx->op == COP_ENCRYPT));
|
|
|
++
|
|
|
++ case EVP_CTRL_INIT:
|
|
|
++ memset(&cipher_ctx->sess, 0, sizeof(cipher_ctx->sess));
|
|
|
++ return 1;
|
|
|
++
|
|
|
++ default:
|
|
|
++ break;
|
|
|
++ }
|
|
|
++
|
|
|
++ return -1;
|
|
|
++}
|
|
|
++
|
|
|
++static int cipher_cleanup(EVP_CIPHER_CTX *ctx)
|
|
|
++{
|
|
|
++ struct cipher_ctx *cipher_ctx =
|
|
|
++ (struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
|
|
|
++
|
|
|
++ return clean_devcrypto_session(&cipher_ctx->sess);
|
|
|
++}
|
|
|
++
|
|
|
++/*
|
|
|
++ * Keep tables of known nids, associated methods, selected ciphers, and driver
|
|
|
++ * info.
|
|
|
++ * Note that known_cipher_nids[] isn't necessarily indexed the same way as
|
|
|
++ * cipher_data[] above, which the other tables are.
|
|
|
++ */
|
|
|
++static int known_cipher_nids[OSSL_NELEM(cipher_data)];
|
|
|
++static int known_cipher_nids_amount = -1; /* -1 indicates not yet initialised */
|
|
|
++static EVP_CIPHER *known_cipher_methods[OSSL_NELEM(cipher_data)] = { NULL, };
|
|
|
++static int selected_ciphers[OSSL_NELEM(cipher_data)];
|
|
|
++static struct driver_info_st cipher_driver_info[OSSL_NELEM(cipher_data)];
|
|
|
++
|
|
|
++
|
|
|
++static int devcrypto_test_cipher(size_t cipher_data_index)
|
|
|
++{
|
|
|
++ return (cipher_driver_info[cipher_data_index].status == DEVCRYPTO_STATUS_USABLE
|
|
|
++ && selected_ciphers[cipher_data_index] == 1
|
|
|
++ && (cipher_driver_info[cipher_data_index].accelerated
|
|
|
++ == DEVCRYPTO_ACCELERATED
|
|
|
++ || use_softdrivers == DEVCRYPTO_USE_SOFTWARE
|
|
|
++ || (cipher_driver_info[cipher_data_index].accelerated
|
|
|
++ != DEVCRYPTO_NOT_ACCELERATED
|
|
|
++ && use_softdrivers == DEVCRYPTO_REJECT_SOFTWARE)));
|
|
|
++}
|
|
|
++
|
|
|
++static void prepare_cipher_methods(void)
|
|
|
++{
|
|
|
++ size_t i;
|
|
|
++ struct session_op sess;
|
|
|
++ unsigned long cipher_mode;
|
|
|
++#ifdef CIOCGSESSINFO
|
|
|
++ struct session_info_op siop;
|
|
|
++#endif
|
|
|
++
|
|
|
++ memset(&cipher_driver_info, 0, sizeof(cipher_driver_info));
|
|
|
++
|
|
|
++ memset(&sess, 0, sizeof(sess));
|
|
|
++ sess.key = (void *)"01234567890123456789012345678901234567890123456789";
|
|
|
++
|
|
|
++ for (i = 0, known_cipher_nids_amount = 0;
|
|
|
++ i < OSSL_NELEM(cipher_data); i++) {
|
|
|
++
|
|
|
++ selected_ciphers[i] = 1;
|
|
|
++ /*
|
|
|
++ * Check that the cipher is usable
|
|
|
++ */
|
|
|
++ sess.cipher = cipher_data[i].devcryptoid;
|
|
|
++ sess.keylen = cipher_data[i].keylen;
|
|
|
++ if (ioctl(cfd, CIOCGSESSION, &sess) < 0) {
|
|
|
++ cipher_driver_info[i].status = DEVCRYPTO_STATUS_NO_CIOCGSESSION;
|
|
|
++ continue;
|
|
|
++ }
|
|
|
++
|
|
|
++ cipher_mode = cipher_data[i].flags & EVP_CIPH_MODE;
|
|
|
++
|
|
|
++ if ((known_cipher_methods[i] =
|
|
|
++ EVP_CIPHER_meth_new(cipher_data[i].nid,
|
|
|
++ cipher_mode == EVP_CIPH_CTR_MODE ? 1 :
|
|
|
++ cipher_data[i].blocksize,
|
|
|
++ cipher_data[i].keylen)) == NULL
|
|
|
++ || !EVP_CIPHER_meth_set_iv_length(known_cipher_methods[i],
|
|
|
++ cipher_data[i].ivlen)
|
|
|
++ || !EVP_CIPHER_meth_set_flags(known_cipher_methods[i],
|
|
|
++ cipher_data[i].flags
|
|
|
++ | EVP_CIPH_CUSTOM_COPY
|
|
|
++ | EVP_CIPH_CTRL_INIT
|
|
|
++ | EVP_CIPH_FLAG_DEFAULT_ASN1)
|
|
|
++ || !EVP_CIPHER_meth_set_init(known_cipher_methods[i], cipher_init)
|
|
|
++ || !EVP_CIPHER_meth_set_do_cipher(known_cipher_methods[i],
|
|
|
++ cipher_mode == EVP_CIPH_CTR_MODE ?
|
|
|
++ ctr_do_cipher :
|
|
|
++ cipher_do_cipher)
|
|
|
++ || !EVP_CIPHER_meth_set_ctrl(known_cipher_methods[i], cipher_ctrl)
|
|
|
++ || !EVP_CIPHER_meth_set_cleanup(known_cipher_methods[i],
|
|
|
++ cipher_cleanup)
|
|
|
++ || !EVP_CIPHER_meth_set_impl_ctx_size(known_cipher_methods[i],
|
|
|
++ sizeof(struct cipher_ctx))) {
|
|
|
++ cipher_driver_info[i].status = DEVCRYPTO_STATUS_FAILURE;
|
|
|
++ EVP_CIPHER_meth_free(known_cipher_methods[i]);
|
|
|
++ known_cipher_methods[i] = NULL;
|
|
|
++ } else {
|
|
|
++ cipher_driver_info[i].status = DEVCRYPTO_STATUS_USABLE;
|
|
|
++#ifdef CIOCGSESSINFO
|
|
|
++ siop.ses = sess.ses;
|
|
|
++ if (ioctl(cfd, CIOCGSESSINFO, &siop) < 0) {
|
|
|
++ cipher_driver_info[i].accelerated = DEVCRYPTO_ACCELERATION_UNKNOWN;
|
|
|
++ } else {
|
|
|
++ cipher_driver_info[i].driver_name =
|
|
|
++ OPENSSL_strndup(siop.cipher_info.cra_driver_name,
|
|
|
++ CRYPTODEV_MAX_ALG_NAME);
|
|
|
++ if (!(siop.flags & SIOP_FLAG_KERNEL_DRIVER_ONLY))
|
|
|
++ cipher_driver_info[i].accelerated = DEVCRYPTO_NOT_ACCELERATED;
|
|
|
++ else
|
|
|
++ cipher_driver_info[i].accelerated = DEVCRYPTO_ACCELERATED;
|
|
|
++ }
|
|
|
++#endif /* CIOCGSESSINFO */
|
|
|
++ }
|
|
|
++ ioctl(cfd, CIOCFSESSION, &sess.ses);
|
|
|
++ if (devcrypto_test_cipher(i)) {
|
|
|
++ known_cipher_nids[known_cipher_nids_amount++] =
|
|
|
++ cipher_data[i].nid;
|
|
|
++ }
|
|
|
++ }
|
|
|
++}
|
|
|
++
|
|
|
++static void rebuild_known_cipher_nids(ENGINE *e)
|
|
|
++{
|
|
|
++ size_t i;
|
|
|
++
|
|
|
++ for (i = 0, known_cipher_nids_amount = 0; i < OSSL_NELEM(cipher_data); i++) {
|
|
|
++ if (devcrypto_test_cipher(i))
|
|
|
++ known_cipher_nids[known_cipher_nids_amount++] = cipher_data[i].nid;
|
|
|
++ }
|
|
|
++ ENGINE_unregister_ciphers(e);
|
|
|
++ ENGINE_register_ciphers(e);
|
|
|
++}
|
|
|
++
|
|
|
++static const EVP_CIPHER *get_cipher_method(int nid)
|
|
|
++{
|
|
|
++ size_t i = get_cipher_data_index(nid);
|
|
|
++
|
|
|
++ if (i == (size_t)-1)
|
|
|
++ return NULL;
|
|
|
++ return known_cipher_methods[i];
|
|
|
++}
|
|
|
++
|
|
|
++static int get_cipher_nids(const int **nids)
|
|
|
++{
|
|
|
++ *nids = known_cipher_nids;
|
|
|
++ return known_cipher_nids_amount;
|
|
|
++}
|
|
|
++
|
|
|
++static void destroy_cipher_method(int nid)
|
|
|
++{
|
|
|
++ size_t i = get_cipher_data_index(nid);
|
|
|
++
|
|
|
++ EVP_CIPHER_meth_free(known_cipher_methods[i]);
|
|
|
++ known_cipher_methods[i] = NULL;
|
|
|
++}
|
|
|
++
|
|
|
++static void destroy_all_cipher_methods(void)
|
|
|
++{
|
|
|
++ size_t i;
|
|
|
++
|
|
|
++ for (i = 0; i < OSSL_NELEM(cipher_data); i++) {
|
|
|
++ destroy_cipher_method(cipher_data[i].nid);
|
|
|
++ OPENSSL_free(cipher_driver_info[i].driver_name);
|
|
|
++ cipher_driver_info[i].driver_name = NULL;
|
|
|
++ }
|
|
|
++}
|
|
|
++
|
|
|
++static int devcrypto_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
|
|
|
++ const int **nids, int nid)
|
|
|
++{
|
|
|
++ if (cipher == NULL)
|
|
|
++ return get_cipher_nids(nids);
|
|
|
++
|
|
|
++ *cipher = get_cipher_method(nid);
|
|
|
++
|
|
|
++ return *cipher != NULL;
|
|
|
++}
|
|
|
++
|
|
|
++static void devcrypto_select_all_ciphers(int *cipher_list)
|
|
|
++{
|
|
|
++ size_t i;
|
|
|
++
|
|
|
++ for (i = 0; i < OSSL_NELEM(cipher_data); i++)
|
|
|
++ cipher_list[i] = 1;
|
|
|
++}
|
|
|
++
|
|
|
++static int cryptodev_select_cipher_cb(const char *str, int len, void *usr)
|
|
|
++{
|
|
|
++ int *cipher_list = (int *)usr;
|
|
|
++ char *name;
|
|
|
++ const EVP_CIPHER *EVP;
|
|
|
++ size_t i;
|
|
|
++
|
|
|
++ if (len == 0)
|
|
|
++ return 1;
|
|
|
++ if (usr == NULL || (name = OPENSSL_strndup(str, len)) == NULL)
|
|
|
++ return 0;
|
|
|
++ EVP = EVP_get_cipherbyname(name);
|
|
|
++ if (EVP == NULL)
|
|
|
++ fprintf(stderr, "devcrypto: unknown cipher %s\n", name);
|
|
|
++ else if ((i = find_cipher_data_index(EVP_CIPHER_nid(EVP))) != (size_t)-1)
|
|
|
++ cipher_list[i] = 1;
|
|
|
++ else
|
|
|
++ fprintf(stderr, "devcrypto: cipher %s not available\n", name);
|
|
|
++ OPENSSL_free(name);
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++static void dump_cipher_info(void)
|
|
|
++{
|
|
|
++ size_t i;
|
|
|
++ const char *name;
|
|
|
++
|
|
|
++ fprintf (stderr, "Information about ciphers supported by the /dev/crypto"
|
|
|
++ " engine:\n");
|
|
|
++#ifndef CIOCGSESSINFO
|
|
|
++ fprintf(stderr, "CIOCGSESSINFO (session info call) unavailable\n");
|
|
|
++#endif
|
|
|
++ for (i = 0; i < OSSL_NELEM(cipher_data); i++) {
|
|
|
++ name = OBJ_nid2sn(cipher_data[i].nid);
|
|
|
++ fprintf (stderr, "Cipher %s, NID=%d, /dev/crypto info: id=%d, ",
|
|
|
++ name ? name : "unknown", cipher_data[i].nid,
|
|
|
++ cipher_data[i].devcryptoid);
|
|
|
++ if (cipher_driver_info[i].status == DEVCRYPTO_STATUS_NO_CIOCGSESSION ) {
|
|
|
++ fprintf (stderr, "CIOCGSESSION (session open call) failed\n");
|
|
|
++ continue;
|
|
|
++ }
|
|
|
++ fprintf (stderr, "driver=%s ", cipher_driver_info[i].driver_name ?
|
|
|
++ cipher_driver_info[i].driver_name : "unknown");
|
|
|
++ if (cipher_driver_info[i].accelerated == DEVCRYPTO_ACCELERATED)
|
|
|
++ fprintf(stderr, "(hw accelerated)");
|
|
|
++ else if (cipher_driver_info[i].accelerated == DEVCRYPTO_NOT_ACCELERATED)
|
|
|
++ fprintf(stderr, "(software)");
|
|
|
++ else
|
|
|
++ fprintf(stderr, "(acceleration status unknown)");
|
|
|
++ if (cipher_driver_info[i].status == DEVCRYPTO_STATUS_FAILURE)
|
|
|
++ fprintf (stderr, ". Cipher setup failed");
|
|
|
++ fprintf(stderr, "\n");
|
|
|
++ }
|
|
|
++ fprintf(stderr, "\n");
|
|
|
++}
|
|
|
++
|
|
|
++/*
|
|
|
++ * We only support digests if the cryptodev implementation supports multiple
|
|
|
++ * data updates and session copying. Otherwise, we would be forced to maintain
|
|
|
++ * a cache, which is perilous if there's a lot of data coming in (if someone
|
|
|
++ * wants to checksum an OpenSSL tarball, for example).
|
|
|
++ */
|
|
|
++#if defined(CIOCCPHASH) && defined(COP_FLAG_UPDATE) && defined(COP_FLAG_FINAL)
|
|
|
++#define IMPLEMENT_DIGEST
|
|
|
++
|
|
|
++/******************************************************************************
|
|
|
++ *
|
|
|
++ * Digests
|
|
|
++ *
|
|
|
++ * Because they all do the same basic operation, we have only one set of
|
|
|
++ * method functions for them all to share, and a mapping table between
|
|
|
++ * NIDs and cryptodev IDs, with all the necessary size data.
|
|
|
++ *
|
|
|
++ *****/
|
|
|
++
|
|
|
++struct digest_ctx {
|
|
|
++ struct session_op sess;
|
|
|
++ /* This signals that the init function was called, not that it succeeded. */
|
|
|
++ int init_called;
|
|
|
++ unsigned char digest_res[HASH_MAX_LEN];
|
|
|
++};
|
|
|
++
|
|
|
++static const struct digest_data_st {
|
|
|
++ int nid;
|
|
|
++ int blocksize;
|
|
|
++ int digestlen;
|
|
|
++ int devcryptoid;
|
|
|
++} digest_data[] = {
|
|
|
++#ifndef OPENSSL_NO_MD5
|
|
|
++ { NID_md5, /* MD5_CBLOCK */ 64, 16, CRYPTO_MD5 },
|
|
|
++#endif
|
|
|
++ { NID_sha1, SHA_CBLOCK, 20, CRYPTO_SHA1 },
|
|
|
++#ifndef OPENSSL_NO_RMD160
|
|
|
++# if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_RIPEMD160)
|
|
|
++ { NID_ripemd160, /* RIPEMD160_CBLOCK */ 64, 20, CRYPTO_RIPEMD160 },
|
|
|
++# endif
|
|
|
++#endif
|
|
|
++#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_224)
|
|
|
++ { NID_sha224, SHA256_CBLOCK, 224 / 8, CRYPTO_SHA2_224 },
|
|
|
++#endif
|
|
|
++#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_256)
|
|
|
++ { NID_sha256, SHA256_CBLOCK, 256 / 8, CRYPTO_SHA2_256 },
|
|
|
++#endif
|
|
|
++#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_384)
|
|
|
++ { NID_sha384, SHA512_CBLOCK, 384 / 8, CRYPTO_SHA2_384 },
|
|
|
++#endif
|
|
|
++#if !defined(CHECK_BSD_STYLE_MACROS) || defined(CRYPTO_SHA2_512)
|
|
|
++ { NID_sha512, SHA512_CBLOCK, 512 / 8, CRYPTO_SHA2_512 },
|
|
|
++#endif
|
|
|
++};
|
|
|
++
|
|
|
++static size_t find_digest_data_index(int nid)
|
|
|
++{
|
|
|
++ size_t i;
|
|
|
++
|
|
|
++ for (i = 0; i < OSSL_NELEM(digest_data); i++)
|
|
|
++ if (nid == digest_data[i].nid)
|
|
|
++ return i;
|
|
|
++ return (size_t)-1;
|
|
|
++}
|
|
|
++
|
|
|
++static size_t get_digest_data_index(int nid)
|
|
|
++{
|
|
|
++ size_t i = find_digest_data_index(nid);
|
|
|
++
|
|
|
++ if (i != (size_t)-1)
|
|
|
++ return i;
|
|
|
++
|
|
|
++ /*
|
|
|
++ * Code further down must make sure that only NIDs in the table above
|
|
|
++ * are used. If any other NID reaches this function, there's a grave
|
|
|
++ * coding error further down.
|
|
|
++ */
|
|
|
++ assert("Code that never should be reached" == NULL);
|
|
|
++ return -1;
|
|
|
++}
|
|
|
++
|
|
|
++static const struct digest_data_st *get_digest_data(int nid)
|
|
|
++{
|
|
|
++ return &digest_data[get_digest_data_index(nid)];
|
|
|
++}
|
|
|
++
|
|
|
++/*
|
|
|
++ * Following are the five necessary functions to map OpenSSL functionality
|
|
|
++ * with cryptodev: init, update, final, cleanup, and copy.
|
|
|
++ */
|
|
|
++
|
|
|
++static int digest_init(EVP_MD_CTX *ctx)
|
|
|
++{
|
|
|
++ struct digest_ctx *digest_ctx =
|
|
|
++ (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
|
++ const struct digest_data_st *digest_d =
|
|
|
++ get_digest_data(EVP_MD_CTX_type(ctx));
|
|
|
++
|
|
|
++ digest_ctx->init_called = 1;
|
|
|
++
|
|
|
++ memset(&digest_ctx->sess, 0, sizeof(digest_ctx->sess));
|
|
|
++ digest_ctx->sess.mac = digest_d->devcryptoid;
|
|
|
++ if (ioctl(cfd, CIOCGSESSION, &digest_ctx->sess) < 0) {
|
|
|
++ SYSerr(SYS_F_IOCTL, errno);
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++static int digest_op(struct digest_ctx *ctx, const void *src, size_t srclen,
|
|
|
++ void *res, unsigned int flags)
|
|
|
++{
|
|
|
++ struct crypt_op cryp;
|
|
|
++
|
|
|
++ memset(&cryp, 0, sizeof(cryp));
|
|
|
++ cryp.ses = ctx->sess.ses;
|
|
|
++ cryp.len = srclen;
|
|
|
++ cryp.src = (void *)src;
|
|
|
++ cryp.dst = NULL;
|
|
|
++ cryp.mac = res;
|
|
|
++ cryp.flags = flags;
|
|
|
++ return ioctl(cfd, CIOCCRYPT, &cryp);
|
|
|
++}
|
|
|
++
|
|
|
++static int digest_update(EVP_MD_CTX *ctx, const void *data, size_t count)
|
|
|
++{
|
|
|
++ struct digest_ctx *digest_ctx =
|
|
|
++ (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
|
++
|
|
|
++ if (count == 0)
|
|
|
++ return 1;
|
|
|
++
|
|
|
++ if (digest_ctx == NULL)
|
|
|
++ return 0;
|
|
|
++
|
|
|
++ if (EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT)) {
|
|
|
++ if (digest_op(digest_ctx, data, count, digest_ctx->digest_res, 0) >= 0)
|
|
|
++ return 1;
|
|
|
++ } else if (digest_op(digest_ctx, data, count, NULL, COP_FLAG_UPDATE) >= 0) {
|
|
|
++ return 1;
|
|
|
++ }
|
|
|
++
|
|
|
++ SYSerr(SYS_F_IOCTL, errno);
|
|
|
++ return 0;
|
|
|
++}
|
|
|
++
|
|
|
++static int digest_final(EVP_MD_CTX *ctx, unsigned char *md)
|
|
|
++{
|
|
|
++ struct digest_ctx *digest_ctx =
|
|
|
++ (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
|
++
|
|
|
++ if (md == NULL || digest_ctx == NULL)
|
|
|
++ return 0;
|
|
|
++
|
|
|
++ if (EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT)) {
|
|
|
++ memcpy(md, digest_ctx->digest_res, EVP_MD_CTX_size(ctx));
|
|
|
++ } else if (digest_op(digest_ctx, NULL, 0, md, COP_FLAG_FINAL) < 0) {
|
|
|
++ SYSerr(SYS_F_IOCTL, errno);
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++static int digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from)
|
|
|
++{
|
|
|
++ struct digest_ctx *digest_from =
|
|
|
++ (struct digest_ctx *)EVP_MD_CTX_md_data(from);
|
|
|
++ struct digest_ctx *digest_to =
|
|
|
++ (struct digest_ctx *)EVP_MD_CTX_md_data(to);
|
|
|
++ struct cphash_op cphash;
|
|
|
++
|
|
|
++ if (digest_from == NULL || digest_from->init_called != 1)
|
|
|
++ return 1;
|
|
|
++
|
|
|
++ if (!digest_init(to)) {
|
|
|
++ SYSerr(SYS_F_IOCTL, errno);
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++
|
|
|
++ cphash.src_ses = digest_from->sess.ses;
|
|
|
++ cphash.dst_ses = digest_to->sess.ses;
|
|
|
++ if (ioctl(cfd, CIOCCPHASH, &cphash) < 0) {
|
|
|
++ SYSerr(SYS_F_IOCTL, errno);
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++static int digest_cleanup(EVP_MD_CTX *ctx)
|
|
|
++{
|
|
|
++ struct digest_ctx *digest_ctx =
|
|
|
++ (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
|
|
|
++
|
|
|
++ if (digest_ctx == NULL)
|
|
|
++ return 1;
|
|
|
++
|
|
|
++ return clean_devcrypto_session(&digest_ctx->sess);
|
|
|
++}
|
|
|
++
|
|
|
++/*
|
|
|
++ * Keep tables of known nids, associated methods, selected digests, and
|
|
|
++ * driver info.
|
|
|
++ * Note that known_digest_nids[] isn't necessarily indexed the same way as
|
|
|
++ * digest_data[] above, which the other tables are.
|
|
|
++ */
|
|
|
++static int known_digest_nids[OSSL_NELEM(digest_data)];
|
|
|
++static int known_digest_nids_amount = -1; /* -1 indicates not yet initialised */
|
|
|
++static EVP_MD *known_digest_methods[OSSL_NELEM(digest_data)] = { NULL, };
|
|
|
++static int selected_digests[OSSL_NELEM(digest_data)];
|
|
|
++static struct driver_info_st digest_driver_info[OSSL_NELEM(digest_data)];
|
|
|
++
|
|
|
++static int devcrypto_test_digest(size_t digest_data_index)
|
|
|
++{
|
|
|
++ return (digest_driver_info[digest_data_index].status == DEVCRYPTO_STATUS_USABLE
|
|
|
++ && selected_digests[digest_data_index] == 1
|
|
|
++ && (digest_driver_info[digest_data_index].accelerated
|
|
|
++ == DEVCRYPTO_ACCELERATED
|
|
|
++ || use_softdrivers == DEVCRYPTO_USE_SOFTWARE
|
|
|
++ || (digest_driver_info[digest_data_index].accelerated
|
|
|
++ != DEVCRYPTO_NOT_ACCELERATED
|
|
|
++ && use_softdrivers == DEVCRYPTO_REJECT_SOFTWARE)));
|
|
|
++}
|
|
|
++
|
|
|
++static void rebuild_known_digest_nids(ENGINE *e)
|
|
|
++{
|
|
|
++ size_t i;
|
|
|
++
|
|
|
++ for (i = 0, known_digest_nids_amount = 0; i < OSSL_NELEM(digest_data); i++) {
|
|
|
++ if (devcrypto_test_digest(i))
|
|
|
++ known_digest_nids[known_digest_nids_amount++] = digest_data[i].nid;
|
|
|
++ }
|
|
|
++ ENGINE_unregister_digests(e);
|
|
|
++ ENGINE_register_digests(e);
|
|
|
++}
|
|
|
++
|
|
|
++static void prepare_digest_methods(void)
|
|
|
++{
|
|
|
++ size_t i;
|
|
|
++ struct session_op sess1, sess2;
|
|
|
++#ifdef CIOCGSESSINFO
|
|
|
++ struct session_info_op siop;
|
|
|
++#endif
|
|
|
++ struct cphash_op cphash;
|
|
|
++
|
|
|
++ memset(&digest_driver_info, 0, sizeof(digest_driver_info));
|
|
|
++
|
|
|
++ memset(&sess1, 0, sizeof(sess1));
|
|
|
++ memset(&sess2, 0, sizeof(sess2));
|
|
|
++
|
|
|
++ for (i = 0, known_digest_nids_amount = 0; i < OSSL_NELEM(digest_data);
|
|
|
++ i++) {
|
|
|
++
|
|
|
++ selected_digests[i] = 1;
|
|
|
++
|
|
|
++ /*
|
|
|
++ * Check that the digest is usable
|
|
|
++ */
|
|
|
++ sess1.mac = digest_data[i].devcryptoid;
|
|
|
++ sess2.ses = 0;
|
|
|
++ if (ioctl(cfd, CIOCGSESSION, &sess1) < 0) {
|
|
|
++ digest_driver_info[i].status = DEVCRYPTO_STATUS_NO_CIOCGSESSION;
|
|
|
++ goto finish;
|
|
|
++ }
|
|
|
++
|
|
|
++#ifdef CIOCGSESSINFO
|
|
|
++ /* gather hardware acceleration info from the driver */
|
|
|
++ siop.ses = sess1.ses;
|
|
|
++ if (ioctl(cfd, CIOCGSESSINFO, &siop) < 0) {
|
|
|
++ digest_driver_info[i].accelerated = DEVCRYPTO_ACCELERATION_UNKNOWN;
|
|
|
++ } else {
|
|
|
++ digest_driver_info[i].driver_name =
|
|
|
++ OPENSSL_strndup(siop.hash_info.cra_driver_name,
|
|
|
++ CRYPTODEV_MAX_ALG_NAME);
|
|
|
++ if (siop.flags & SIOP_FLAG_KERNEL_DRIVER_ONLY)
|
|
|
++ digest_driver_info[i].accelerated = DEVCRYPTO_ACCELERATED;
|
|
|
++ else
|
|
|
++ digest_driver_info[i].accelerated = DEVCRYPTO_NOT_ACCELERATED;
|
|
|
++ }
|
|
|
++#endif
|
|
|
++
|
|
|
++ /* digest must be capable of hash state copy */
|
|
|
++ sess2.mac = sess1.mac;
|
|
|
++ if (ioctl(cfd, CIOCGSESSION, &sess2) < 0) {
|
|
|
++ digest_driver_info[i].status = DEVCRYPTO_STATUS_FAILURE;
|
|
|
++ goto finish;
|
|
|
++ }
|
|
|
++ cphash.src_ses = sess1.ses;
|
|
|
++ cphash.dst_ses = sess2.ses;
|
|
|
++ if (ioctl(cfd, CIOCCPHASH, &cphash) < 0) {
|
|
|
++ digest_driver_info[i].status = DEVCRYPTO_STATUS_NO_CIOCCPHASH;
|
|
|
++ goto finish;
|
|
|
++ }
|
|
|
++ if ((known_digest_methods[i] = EVP_MD_meth_new(digest_data[i].nid,
|
|
|
++ NID_undef)) == NULL
|
|
|
++ || !EVP_MD_meth_set_input_blocksize(known_digest_methods[i],
|
|
|
++ digest_data[i].blocksize)
|
|
|
++ || !EVP_MD_meth_set_result_size(known_digest_methods[i],
|
|
|
++ digest_data[i].digestlen)
|
|
|
++ || !EVP_MD_meth_set_init(known_digest_methods[i], digest_init)
|
|
|
++ || !EVP_MD_meth_set_update(known_digest_methods[i], digest_update)
|
|
|
++ || !EVP_MD_meth_set_final(known_digest_methods[i], digest_final)
|
|
|
++ || !EVP_MD_meth_set_copy(known_digest_methods[i], digest_copy)
|
|
|
++ || !EVP_MD_meth_set_cleanup(known_digest_methods[i], digest_cleanup)
|
|
|
++ || !EVP_MD_meth_set_app_datasize(known_digest_methods[i],
|
|
|
++ sizeof(struct digest_ctx))) {
|
|
|
++ digest_driver_info[i].status = DEVCRYPTO_STATUS_FAILURE;
|
|
|
++ EVP_MD_meth_free(known_digest_methods[i]);
|
|
|
++ known_digest_methods[i] = NULL;
|
|
|
++ goto finish;
|
|
|
++ }
|
|
|
++ digest_driver_info[i].status = DEVCRYPTO_STATUS_USABLE;
|
|
|
++finish:
|
|
|
++ ioctl(cfd, CIOCFSESSION, &sess1.ses);
|
|
|
++ if (sess2.ses != 0)
|
|
|
++ ioctl(cfd, CIOCFSESSION, &sess2.ses);
|
|
|
++ if (devcrypto_test_digest(i))
|
|
|
++ known_digest_nids[known_digest_nids_amount++] = digest_data[i].nid;
|
|
|
++ }
|
|
|
++}
|
|
|
++
|
|
|
++static const EVP_MD *get_digest_method(int nid)
|
|
|
++{
|
|
|
++ size_t i = get_digest_data_index(nid);
|
|
|
++
|
|
|
++ if (i == (size_t)-1)
|
|
|
++ return NULL;
|
|
|
++ return known_digest_methods[i];
|
|
|
++}
|
|
|
++
|
|
|
++static int get_digest_nids(const int **nids)
|
|
|
++{
|
|
|
++ *nids = known_digest_nids;
|
|
|
++ return known_digest_nids_amount;
|
|
|
++}
|
|
|
++
|
|
|
++static void destroy_digest_method(int nid)
|
|
|
++{
|
|
|
++ size_t i = get_digest_data_index(nid);
|
|
|
++
|
|
|
++ EVP_MD_meth_free(known_digest_methods[i]);
|
|
|
++ known_digest_methods[i] = NULL;
|
|
|
++}
|
|
|
++
|
|
|
++static void destroy_all_digest_methods(void)
|
|
|
++{
|
|
|
++ size_t i;
|
|
|
++
|
|
|
++ for (i = 0; i < OSSL_NELEM(digest_data); i++) {
|
|
|
++ destroy_digest_method(digest_data[i].nid);
|
|
|
++ OPENSSL_free(digest_driver_info[i].driver_name);
|
|
|
++ digest_driver_info[i].driver_name = NULL;
|
|
|
++ }
|
|
|
++}
|
|
|
++
|
|
|
++static int devcrypto_digests(ENGINE *e, const EVP_MD **digest,
|
|
|
++ const int **nids, int nid)
|
|
|
++{
|
|
|
++ if (digest == NULL)
|
|
|
++ return get_digest_nids(nids);
|
|
|
++
|
|
|
++ *digest = get_digest_method(nid);
|
|
|
++
|
|
|
++ return *digest != NULL;
|
|
|
++}
|
|
|
++
|
|
|
++static void devcrypto_select_all_digests(int *digest_list)
|
|
|
++{
|
|
|
++ size_t i;
|
|
|
++
|
|
|
++ for (i = 0; i < OSSL_NELEM(digest_data); i++)
|
|
|
++ digest_list[i] = 1;
|
|
|
++}
|
|
|
++
|
|
|
++static int cryptodev_select_digest_cb(const char *str, int len, void *usr)
|
|
|
++{
|
|
|
++ int *digest_list = (int *)usr;
|
|
|
++ char *name;
|
|
|
++ const EVP_MD *EVP;
|
|
|
++ size_t i;
|
|
|
++
|
|
|
++ if (len == 0)
|
|
|
++ return 1;
|
|
|
++ if (usr == NULL || (name = OPENSSL_strndup(str, len)) == NULL)
|
|
|
++ return 0;
|
|
|
++ EVP = EVP_get_digestbyname(name);
|
|
|
++ if (EVP == NULL)
|
|
|
++ fprintf(stderr, "devcrypto: unknown digest %s\n", name);
|
|
|
++ else if ((i = find_digest_data_index(EVP_MD_type(EVP))) != (size_t)-1)
|
|
|
++ digest_list[i] = 1;
|
|
|
++ else
|
|
|
++ fprintf(stderr, "devcrypto: digest %s not available\n", name);
|
|
|
++ OPENSSL_free(name);
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++static void dump_digest_info(void)
|
|
|
++{
|
|
|
++ size_t i;
|
|
|
++ const char *name;
|
|
|
++
|
|
|
++ fprintf (stderr, "Information about digests supported by the /dev/crypto"
|
|
|
++ " engine:\n");
|
|
|
++#ifndef CIOCGSESSINFO
|
|
|
++ fprintf(stderr, "CIOCGSESSINFO (session info call) unavailable\n");
|
|
|
++#endif
|
|
|
++
|
|
|
++ for (i = 0; i < OSSL_NELEM(digest_data); i++) {
|
|
|
++ name = OBJ_nid2sn(digest_data[i].nid);
|
|
|
++ fprintf (stderr, "Digest %s, NID=%d, /dev/crypto info: id=%d, driver=%s",
|
|
|
++ name ? name : "unknown", digest_data[i].nid,
|
|
|
++ digest_data[i].devcryptoid,
|
|
|
++ digest_driver_info[i].driver_name ? digest_driver_info[i].driver_name : "unknown");
|
|
|
++ if (digest_driver_info[i].status == DEVCRYPTO_STATUS_NO_CIOCGSESSION) {
|
|
|
++ fprintf (stderr, ". CIOCGSESSION (session open) failed\n");
|
|
|
++ continue;
|
|
|
++ }
|
|
|
++ if (digest_driver_info[i].accelerated == DEVCRYPTO_ACCELERATED)
|
|
|
++ fprintf(stderr, " (hw accelerated)");
|
|
|
++ else if (digest_driver_info[i].accelerated == DEVCRYPTO_NOT_ACCELERATED)
|
|
|
++ fprintf(stderr, " (software)");
|
|
|
++ else
|
|
|
++ fprintf(stderr, " (acceleration status unknown)");
|
|
|
++ if (cipher_driver_info[i].status == DEVCRYPTO_STATUS_FAILURE)
|
|
|
++ fprintf (stderr, ". Cipher setup failed\n");
|
|
|
++ else if (digest_driver_info[i].status == DEVCRYPTO_STATUS_NO_CIOCCPHASH)
|
|
|
++ fprintf(stderr, ", CIOCCPHASH failed\n");
|
|
|
++ else
|
|
|
++ fprintf(stderr, ", CIOCCPHASH capable\n");
|
|
|
++ }
|
|
|
++ fprintf(stderr, "\n");
|
|
|
++}
|
|
|
++
|
|
|
++#endif
|
|
|
++
|
|
|
++/******************************************************************************
|
|
|
++ *
|
|
|
++ * CONTROL COMMANDS
|
|
|
++ *
|
|
|
++ *****/
|
|
|
++
|
|
|
++#define DEVCRYPTO_CMD_USE_SOFTDRIVERS ENGINE_CMD_BASE
|
|
|
++#define DEVCRYPTO_CMD_CIPHERS (ENGINE_CMD_BASE + 1)
|
|
|
++#define DEVCRYPTO_CMD_DIGESTS (ENGINE_CMD_BASE + 2)
|
|
|
++#define DEVCRYPTO_CMD_DUMP_INFO (ENGINE_CMD_BASE + 3)
|
|
|
++
|
|
|
++/* Helper macros for CPP string composition */
|
|
|
++#ifndef OPENSSL_MSTR
|
|
|
++# define OPENSSL_MSTR_HELPER(x) #x
|
|
|
++# define OPENSSL_MSTR(x) OPENSSL_MSTR_HELPER(x)
|
|
|
++#endif
|
|
|
++
|
|
|
++static const ENGINE_CMD_DEFN devcrypto_cmds[] = {
|
|
|
++#ifdef CIOCGSESSINFO
|
|
|
++ {DEVCRYPTO_CMD_USE_SOFTDRIVERS,
|
|
|
++ "USE_SOFTDRIVERS",
|
|
|
++ "specifies whether to use software (not accelerated) drivers ("
|
|
|
++ OPENSSL_MSTR(DEVCRYPTO_REQUIRE_ACCELERATED) "=use only accelerated drivers, "
|
|
|
++ OPENSSL_MSTR(DEVCRYPTO_USE_SOFTWARE) "=allow all drivers, "
|
|
|
++ OPENSSL_MSTR(DEVCRYPTO_REJECT_SOFTWARE)
|
|
|
++ "=use if acceleration can't be determined) [default="
|
|
|
++ OPENSSL_MSTR(DEVCRYPTO_DEFAULT_USE_SOFTDRIVERS) "]",
|
|
|
++ ENGINE_CMD_FLAG_NUMERIC},
|
|
|
++#endif
|
|
|
++
|
|
|
++ {DEVCRYPTO_CMD_CIPHERS,
|
|
|
++ "CIPHERS",
|
|
|
++ "either ALL, NONE, or a comma-separated list of ciphers to enable [default=ALL]",
|
|
|
++ ENGINE_CMD_FLAG_STRING},
|
|
|
++
|
|
|
++#ifdef IMPLEMENT_DIGEST
|
|
|
++ {DEVCRYPTO_CMD_DIGESTS,
|
|
|
++ "DIGESTS",
|
|
|
++ "either ALL, NONE, or a comma-separated list of digests to enable [default=ALL]",
|
|
|
++ ENGINE_CMD_FLAG_STRING},
|
|
|
++#endif
|
|
|
++
|
|
|
++ {DEVCRYPTO_CMD_DUMP_INFO,
|
|
|
++ "DUMP_INFO",
|
|
|
++ "dump info about each algorithm to stderr; use 'openssl engine -pre DUMP_INFO devcrypto'",
|
|
|
++ ENGINE_CMD_FLAG_NO_INPUT},
|
|
|
++
|
|
|
++ {0, NULL, NULL, 0}
|
|
|
++};
|
|
|
++
|
|
|
++static int devcrypto_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f) (void))
|
|
|
++{
|
|
|
++ int *new_list;
|
|
|
++ switch (cmd) {
|
|
|
++#ifdef CIOCGSESSINFO
|
|
|
++ case DEVCRYPTO_CMD_USE_SOFTDRIVERS:
|
|
|
++ switch (i) {
|
|
|
++ case DEVCRYPTO_REQUIRE_ACCELERATED:
|
|
|
++ case DEVCRYPTO_USE_SOFTWARE:
|
|
|
++ case DEVCRYPTO_REJECT_SOFTWARE:
|
|
|
++ break;
|
|
|
++ default:
|
|
|
++ fprintf(stderr, "devcrypto: invalid value (%ld) for USE_SOFTDRIVERS\n", i);
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++ if (use_softdrivers == i)
|
|
|
++ return 1;
|
|
|
++ use_softdrivers = i;
|
|
|
++#ifdef IMPLEMENT_DIGEST
|
|
|
++ rebuild_known_digest_nids(e);
|
|
|
++#endif
|
|
|
++ rebuild_known_cipher_nids(e);
|
|
|
++ return 1;
|
|
|
++#endif /* CIOCGSESSINFO */
|
|
|
++
|
|
|
++ case DEVCRYPTO_CMD_CIPHERS:
|
|
|
++ if (p == NULL)
|
|
|
++ return 1;
|
|
|
++ if (strcasecmp((const char *)p, "ALL") == 0) {
|
|
|
++ devcrypto_select_all_ciphers(selected_ciphers);
|
|
|
++ } else if (strcasecmp((const char*)p, "NONE") == 0) {
|
|
|
++ memset(selected_ciphers, 0, sizeof(selected_ciphers));
|
|
|
++ } else {
|
|
|
++ new_list=OPENSSL_zalloc(sizeof(selected_ciphers));
|
|
|
++ if (!CONF_parse_list(p, ',', 1, cryptodev_select_cipher_cb, new_list)) {
|
|
|
++ OPENSSL_free(new_list);
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++ memcpy(selected_ciphers, new_list, sizeof(selected_ciphers));
|
|
|
++ OPENSSL_free(new_list);
|
|
|
++ }
|
|
|
++ rebuild_known_cipher_nids(e);
|
|
|
++ return 1;
|
|
|
++
|
|
|
++#ifdef IMPLEMENT_DIGEST
|
|
|
++ case DEVCRYPTO_CMD_DIGESTS:
|
|
|
++ if (p == NULL)
|
|
|
++ return 1;
|
|
|
++ if (strcasecmp((const char *)p, "ALL") == 0) {
|
|
|
++ devcrypto_select_all_digests(selected_digests);
|
|
|
++ } else if (strcasecmp((const char*)p, "NONE") == 0) {
|
|
|
++ memset(selected_digests, 0, sizeof(selected_digests));
|
|
|
++ } else {
|
|
|
++ new_list=OPENSSL_zalloc(sizeof(selected_digests));
|
|
|
++ if (!CONF_parse_list(p, ',', 1, cryptodev_select_digest_cb, new_list)) {
|
|
|
++ OPENSSL_free(new_list);
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++ memcpy(selected_digests, new_list, sizeof(selected_digests));
|
|
|
++ OPENSSL_free(new_list);
|
|
|
++ }
|
|
|
++ rebuild_known_digest_nids(e);
|
|
|
++ return 1;
|
|
|
++#endif /* IMPLEMENT_DIGEST */
|
|
|
++
|
|
|
++ case DEVCRYPTO_CMD_DUMP_INFO:
|
|
|
++ dump_cipher_info();
|
|
|
++#ifdef IMPLEMENT_DIGEST
|
|
|
++ dump_digest_info();
|
|
|
++#endif
|
|
|
++ return 1;
|
|
|
++
|
|
|
++ default:
|
|
|
++ break;
|
|
|
++ }
|
|
|
++ return 0;
|
|
|
++}
|
|
|
++
|
|
|
++/******************************************************************************
|
|
|
++ *
|
|
|
++ * LOAD / UNLOAD
|
|
|
++ *
|
|
|
++ *****/
|
|
|
++
|
|
|
++/*
|
|
|
++ * Opens /dev/crypto
|
|
|
++ */
|
|
|
++static int open_devcrypto(void)
|
|
|
++{
|
|
|
++ if (cfd >= 0)
|
|
|
++ return 1;
|
|
|
++
|
|
|
++ if ((cfd = open("/dev/crypto", O_RDWR, 0)) < 0) {
|
|
|
++#ifndef ENGINE_DEVCRYPTO_DEBUG
|
|
|
++ if (errno != ENOENT)
|
|
|
++#endif
|
|
|
++ fprintf(stderr, "Could not open /dev/crypto: %s\n", strerror(errno));
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++static int close_devcrypto(void)
|
|
|
++{
|
|
|
++ int ret;
|
|
|
++
|
|
|
++ if (cfd < 0)
|
|
|
++ return 1;
|
|
|
++ ret = close(cfd);
|
|
|
++ cfd = -1;
|
|
|
++ if (ret != 0) {
|
|
|
++ fprintf(stderr, "Error closing /dev/crypto: %s\n", strerror(errno));
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++static int devcrypto_unload(ENGINE *e)
|
|
|
++{
|
|
|
++ destroy_all_cipher_methods();
|
|
|
++#ifdef IMPLEMENT_DIGEST
|
|
|
++ destroy_all_digest_methods();
|
|
|
++#endif
|
|
|
++
|
|
|
++ close_devcrypto();
|
|
|
++
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++static int bind_devcrypto(ENGINE *e) {
|
|
|
++
|
|
|
++ if (!ENGINE_set_id(e, engine_devcrypto_id)
|
|
|
++ || !ENGINE_set_name(e, "/dev/crypto engine")
|
|
|
++ || !ENGINE_set_destroy_function(e, devcrypto_unload)
|
|
|
++ || !ENGINE_set_cmd_defns(e, devcrypto_cmds)
|
|
|
++ || !ENGINE_set_ctrl_function(e, devcrypto_ctrl))
|
|
|
++ return 0;
|
|
|
++
|
|
|
++ prepare_cipher_methods();
|
|
|
++#ifdef IMPLEMENT_DIGEST
|
|
|
++ prepare_digest_methods();
|
|
|
++#endif
|
|
|
++
|
|
|
++ return (ENGINE_set_ciphers(e, devcrypto_ciphers)
|
|
|
++#ifdef IMPLEMENT_DIGEST
|
|
|
++ && ENGINE_set_digests(e, devcrypto_digests)
|
|
|
++#endif
|
|
|
++/*
|
|
|
++ * Asymmetric ciphers aren't well supported with /dev/crypto. Among the BSD
|
|
|
++ * implementations, it seems to only exist in FreeBSD, and regarding the
|
|
|
++ * parameters in its crypt_kop, the manual crypto(4) has this to say:
|
|
|
++ *
|
|
|
++ * The semantics of these arguments are currently undocumented.
|
|
|
++ *
|
|
|
++ * Reading through the FreeBSD source code doesn't give much more than
|
|
|
++ * their CRK_MOD_EXP implementation for ubsec.
|
|
|
++ *
|
|
|
++ * It doesn't look much better with cryptodev-linux. They have the crypt_kop
|
|
|
++ * structure as well as the command (CRK_*) in cryptodev.h, but no support
|
|
|
++ * seems to be implemented at all for the moment.
|
|
|
++ *
|
|
|
++ * At the time of writing, it seems impossible to write proper support for
|
|
|
++ * FreeBSD's asym features without some very deep knowledge and access to
|
|
|
++ * specific kernel modules.
|
|
|
++ *
|
|
|
++ * /Richard Levitte, 2017-05-11
|
|
|
++ */
|
|
|
++#if 0
|
|
|
++# ifndef OPENSSL_NO_RSA
|
|
|
++ && ENGINE_set_RSA(e, devcrypto_rsa)
|
|
|
++# endif
|
|
|
++# ifndef OPENSSL_NO_DSA
|
|
|
++ && ENGINE_set_DSA(e, devcrypto_dsa)
|
|
|
++# endif
|
|
|
++# ifndef OPENSSL_NO_DH
|
|
|
++ && ENGINE_set_DH(e, devcrypto_dh)
|
|
|
++# endif
|
|
|
++# ifndef OPENSSL_NO_EC
|
|
|
++ && ENGINE_set_EC(e, devcrypto_ec)
|
|
|
++# endif
|
|
|
++#endif
|
|
|
++ );
|
|
|
++}
|
|
|
++
|
|
|
++#ifdef OPENSSL_NO_DYNAMIC_ENGINE
|
|
|
++/*
|
|
|
++ * In case this engine is built into libcrypto, then it doesn't offer any
|
|
|
++ * ability to be dynamically loadable.
|
|
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++ */
|
|
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++void engine_load_devcrypto_int(void)
|
|
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++{
|
|
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++ ENGINE *e = NULL;
|
|
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++
|
|
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++ if (!open_devcrypto())
|
|
|
++ return;
|
|
|
++
|
|
|
++ if ((e = ENGINE_new()) == NULL
|
|
|
++ || !bind_devcrypto(e)) {
|
|
|
++ close_devcrypto();
|
|
|
++ ENGINE_free(e);
|
|
|
++ return;
|
|
|
++ }
|
|
|
++
|
|
|
++ ENGINE_add(e);
|
|
|
++ ENGINE_free(e); /* Loose our local reference */
|
|
|
++ ERR_clear_error();
|
|
|
++}
|
|
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++
|
|
|
++#else
|
|
|
++
|
|
|
++static int bind_helper(ENGINE *e, const char *id)
|
|
|
++{
|
|
|
++ if ((id && (strcmp(id, engine_devcrypto_id) != 0))
|
|
|
++ || !open_devcrypto())
|
|
|
++ return 0;
|
|
|
++ if (!bind_devcrypto(e)) {
|
|
|
++ close_devcrypto();
|
|
|
++ return 0;
|
|
|
++ }
|
|
|
++ return 1;
|
|
|
++}
|
|
|
++
|
|
|
++IMPLEMENT_DYNAMIC_CHECK_FN()
|
|
|
++IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
|
|
|
++
|
|
|
++#endif
|
Eneas U de Queiroz