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@@ -0,0 +1,348 @@
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+#include "Stdafx.h"
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+#include ".\md5.h"
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+
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+CMd5::CMd5()
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+{
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+ // don't alloc buffer here, only on request
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+ mp_s8ReadBuffer = 0;
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+}
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+
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+CMd5::~CMd5()
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+{
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+ FreeBuffer();
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+}
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+
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+void CMd5::FreeBuffer()
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+{
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+ if(mp_s8ReadBuffer)
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+ delete mp_s8ReadBuffer;
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+}
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+
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+/*********************************************************************
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+//
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+// calculate MD5 from a file of any size (also size = 0)
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+// returns "" on file error
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+//
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+/********************************************************************/
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+
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+char* CMd5::CalcMD5FromFile(const TCHAR *s8_Path)
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+{
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+ if(!mp_s8ReadBuffer)
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+ {
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+ mp_s8ReadBuffer = new char[_ReadBufSize];
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+ }
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+
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+ MD5Init();
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+
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+ // ++++++++++++ Read file block by block +++++++++++
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+
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+ HANDLE h_File = CreateFile(s8_Path, GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
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+
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+ if (h_File == INVALID_HANDLE_VALUE)
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+ return "";
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+
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+ int s32_Size = GetFileSize(h_File, 0);
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+
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+ while (s32_Size > 0)
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+ {
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+ unsigned long u32_Read = 0;
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+ if (!ReadFile(h_File, mp_s8ReadBuffer, _ReadBufSize, &u32_Read, 0))
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+ {
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+ CloseHandle(h_File);
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+ return "";
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+ }
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+
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+ MD5Update((unsigned char*)mp_s8ReadBuffer, u32_Read);
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+
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+ s32_Size -= u32_Read;
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+ };
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+
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+ CloseHandle(h_File);
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+
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+ // ++++++++++++ Signature --> String +++++++++++
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+
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+ return MD5FinalToString();
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+}
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+
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+
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+/*********************************************************************
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+//
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+// calculate MD5 from a string
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+//
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+/********************************************************************/
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+char* CMd5::CalcMD5FromString(const char *s8_Input)
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+{
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+ MD5Init();
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+ MD5Update((unsigned char*)s8_Input, strlen(s8_Input));
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+
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+ return MD5FinalToString();
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+}
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+
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+
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+/*********************************************************************
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+//
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+// Calculation functions
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+//
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+/*********************************************************************
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+/*
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+* Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
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+* initialization constants.
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+*/
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+void CMd5::MD5Init()
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+{
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+ ctx.buf[0] = 0x67452301;
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+ ctx.buf[1] = 0xefcdab89;
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+ ctx.buf[2] = 0x98badcfe;
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+ ctx.buf[3] = 0x10325476;
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+
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+ ctx.bits[0] = 0;
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+ ctx.bits[1] = 0;
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+}
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+
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+/*
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+* Update context to reflect the concatenation of another buffer full
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+* of bytes.
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+*/
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+void CMd5::MD5Update(unsigned char *buf, unsigned len)
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+{
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+ unsigned long t;
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+
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+ /* Update bitcount */
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+
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+ t = ctx.bits[0];
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+ if ((ctx.bits[0] = t + ((unsigned long) len << 3)) < t)
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+ ctx.bits[1]++; /* Carry from low to high */
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+ ctx.bits[1] += len >> 29;
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+
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+ t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
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+
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+ /* Handle any leading odd-sized chunks */
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+
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+ if (t)
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+ {
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+ unsigned char *p = (unsigned char *) ctx.in + t;
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+
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+ t = 64 - t;
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+ if (len < t) {
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+ memcpy(p, buf, len);
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+ return;
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+ }
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+ memcpy(p, buf, t);
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+ CMd5::byteReverse(ctx.in, 16);
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+ MD5Transform(ctx.buf, (unsigned long *) ctx.in);
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+ buf += t;
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+ len -= t;
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+ }
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+ /* Process data in 64-byte chunks */
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+
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+ while (len >= 64)
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+ {
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+ memcpy(ctx.in, buf, 64);
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+ CMd5::byteReverse(ctx.in, 16);
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+ MD5Transform(ctx.buf, (unsigned long *) ctx.in);
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+ buf += 64;
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+ len -= 64;
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+ }
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+
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+ /* Handle any remaining bytes of data. */
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+
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+ memcpy(ctx.in, buf, len);
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+}
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+
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+/*
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+* Convert signature to CString
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+*/
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+char* CMd5::MD5FinalToString()
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+{
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+ unsigned char signature[16];
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+ MD5Final(signature);
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+
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+ ms8_MD5[0] = 0;
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+ char s8_Temp[5];
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+ for (int i=0; i<16; i++)
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+ {
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+ sprintf(s8_Temp, "%02X", signature[i]);
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+ strcat(ms8_MD5, s8_Temp);
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+ }
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+
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+ return ms8_MD5;
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+}
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+
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+
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+/*
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+* Final wrapup - pad to 64-byte boundary with the bit pattern
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+* 1 0* (64-bit count of bits processed, MSB-first)
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+*/
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+void CMd5::MD5Final(unsigned char digest[16])
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+{
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+ unsigned count;
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+ unsigned char *p;
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+
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+ /* Compute number of bytes mod 64 */
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+ count = (ctx.bits[0] >> 3) & 0x3F;
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+
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+ /* Set the first char of padding to 0x80. This is safe since there is
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+ always at least one byte free */
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+ p = ctx.in + count;
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+ *p++ = 0x80;
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+
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+ /* Bytes of padding needed to make 64 bytes */
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+ count = 64 - 1 - count;
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+
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+ /* Pad out to 56 mod 64 */
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+ if(count < 8)
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+ {
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+ /* Two lots of padding: Pad the first block to 64 bytes */
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+ memset(p, 0, count);
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+ CMd5::byteReverse(ctx.in, 16);
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+ MD5Transform(ctx.buf, (unsigned long *) ctx.in);
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+
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+ /* Now fill the next block with 56 bytes */
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+ memset(ctx.in, 0, 56);
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+ }
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+ else
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+ {
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+ /* Pad block to 56 bytes */
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+ memset(p, 0, count - 8);
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+ }
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+ CMd5::byteReverse(ctx.in, 14);
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+
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+ /* Append length in bits and transform */
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+ ((unsigned long *) ctx.in)[14] = ctx.bits[0];
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+ ((unsigned long *) ctx.in)[15] = ctx.bits[1];
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+
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+ MD5Transform(ctx.buf, (unsigned long *) ctx.in);
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+ CMd5::byteReverse((unsigned char *) ctx.buf, 4);
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+ memcpy(digest, ctx.buf, 16);
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+ memset(&ctx, 0, sizeof(MD5Context)); /* In case it's sensitive */
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+}
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+
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+
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+/* The four core functions - F1 is optimized somewhat */
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+
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+/* #define F1(x, y, z) (x & y | ~x & z) */
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+#define F1(x, y, z) (z ^ (x & (y ^ z)))
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+#define F2(x, y, z) F1(z, x, y)
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+#define F3(x, y, z) (x ^ y ^ z)
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+#define F4(x, y, z) (y ^ (x | ~z))
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+
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+/* This is the central step in the MD5 algorithm. */
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+#define MD5STEP(f, w, x, y, z, data, s) \
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+ ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
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+
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+/*
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+* The core of the MD5 algorithm, this alters an existing MD5 hash to
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+* reflect the addition of 16 longwords of new data. MD5Update blocks
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+* the data and converts bytes into longwords for this routine.
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+*/
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+void CMd5::MD5Transform(unsigned long buf[4], unsigned long in[16])
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+{
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+ register unsigned long a, b, c, d;
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+
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+ a = buf[0];
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+ b = buf[1];
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+ c = buf[2];
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+ d = buf[3];
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+
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+ MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
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+ MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
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+ MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
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+ MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
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+ MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
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+ MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
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+ MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
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+ MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
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+ MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
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+ MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
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+ MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
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+ MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
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+ MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
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+ MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
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+ MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
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+ MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
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+
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+ MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
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+ MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
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+ MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
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+ MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
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+ MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
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+ MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
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+ MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
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+ MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
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+ MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
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+ MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
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+ MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
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+ MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
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+ MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
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+ MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
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+ MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
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+ MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
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+
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+ MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
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+ MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
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+ MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
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+ MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
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+ MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
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+ MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
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+ MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
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+ MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
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+ MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
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+ MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
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+ MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
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+ MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
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+ MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
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+ MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
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+ MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
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+ MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
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+
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+ MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
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+ MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
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+ MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
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+ MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
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+ MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
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+ MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
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+ MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
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+ MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
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+ MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
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+ MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
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+ MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
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+ MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
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+ MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
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+ MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
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+ MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
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+ MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
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+
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+ buf[0] += a;
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+ buf[1] += b;
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+ buf[2] += c;
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+ buf[3] += d;
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+}
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+
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+#ifdef sgi
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+#define HIGHFIRST
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+#endif
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+
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+#ifdef sun
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+#define HIGHFIRST
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+#endif
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+
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+
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+#ifndef HIGHFIRST
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+void CMd5::byteReverse(unsigned char *buf, unsigned longs)
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+{
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+ // Nothing
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+}
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+#else
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+// Note: this code is harmless on little-endian machines.
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+void CMd5::byteReverse(unsigned char *buf, unsigned longs)
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+{
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+ unsigned long t;
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+ do
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+ {
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+ t = (unsigned long) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
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+ ((unsigned) buf[1] << 8 | buf[0]);
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+ *(unsigned long *) buf = t;
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+ buf += 4;
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+ } while (--longs);
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+}
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+#endif
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ScottBrogden