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/*
Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
MA 02110-1301 USA.
*/
/* based on Wei Dai's md5.cpp from CryptoPP */
#include "runtime.hpp"
#include "md5.hpp"
#ifdef USE_SYS_STL
#include <algorithm>
#else
#include "algorithm.hpp"
#endif
namespace STL = STL_NAMESPACE;
namespace TaoCrypt {
void MD5::Init()
{
digest_[0] = 0x67452301L;
digest_[1] = 0xefcdab89L;
digest_[2] = 0x98badcfeL;
digest_[3] = 0x10325476L;
buffLen_ = 0;
loLen_ = 0;
hiLen_ = 0;
}
MD5::MD5(const MD5& that) : HASHwithTransform(DIGEST_SIZE / sizeof(word32),
BLOCK_SIZE)
{
buffLen_ = that.buffLen_;
loLen_ = that.loLen_;
hiLen_ = that.hiLen_;
memcpy(digest_, that.digest_, DIGEST_SIZE);
memcpy(buffer_, that.buffer_, BLOCK_SIZE);
}
MD5& MD5::operator= (const MD5& that)
{
MD5 tmp(that);
Swap(tmp);
return *this;
}
void MD5::Swap(MD5& other)
{
STL::swap(loLen_, other.loLen_);
STL::swap(hiLen_, other.hiLen_);
STL::swap(buffLen_, other.buffLen_);
memcpy(digest_, other.digest_, DIGEST_SIZE);
memcpy(buffer_, other.buffer_, BLOCK_SIZE);
}
#ifdef DO_MD5_ASM
// Update digest with data of size len
void MD5::Update(const byte* data, word32 len)
{
if (!isMMX) {
HASHwithTransform::Update(data, len);
return;
}
byte* local = reinterpret_cast<byte*>(buffer_);
// remove buffered data if possible
if (buffLen_) {
word32 add = min(len, BLOCK_SIZE - buffLen_);
memcpy(&local[buffLen_], data, add);
buffLen_ += add;
data += add;
len -= add;
if (buffLen_ == BLOCK_SIZE) {
Transform();
AddLength(BLOCK_SIZE);
buffLen_ = 0;
}
}
// at once for asm
if (buffLen_ == 0) {
word32 times = len / BLOCK_SIZE;
if (times) {
AsmTransform(data, times);
const word32 add = BLOCK_SIZE * times;
AddLength(add);
len -= add;
data += add;
}
}
// cache any data left
if (len) {
memcpy(&local[buffLen_], data, len);
buffLen_ += len;
}
}
/*
// w = rotlFixed(w + f(x, y, z) + index[edi] + data, s) + x
#define ASMMD5STEP(f, w, x, y, z, index, data, s) \
f(x, y, z) \
AS2( mov ebp, [edi + index * 4] ) \
AS2( lea w, [esi + w + data] ) \
AS2( add w, ebp ) \
AS2( rol w, s ) \
AS2( add w, x )
// F1(x, y, z) (z ^ (x & (y ^ z)))
// place in esi
#define ASMF1(x, y, z) \
AS2( mov esi, y ) \
AS2( xor esi, z ) \
AS2( and esi, x ) \
AS2( xor esi, z )
#define ASMF2(x, y, z) ASMF1(z, x, y)
// F3(x ^ y ^ z)
// place in esi
#define ASMF3(x, y, z) \
AS2( mov esi, x ) \
AS2( xor esi, y ) \
AS2( xor esi, z )
// F4(x, y, z) (y ^ (x | ~z))
// place in esi
#define ASMF4(x, y, z) \
AS2( mov esi, z ) \
AS1( not esi ) \
AS2( or esi, x ) \
AS2( xor esi, y )
*/
// combine above ASMMD5STEP(f w/ each f ASMF1 - F4
// esi already set up, after using set for next round
// ebp already set up, set up using next round index
#define MD5STEP1(w, x, y, z, index, data, s) \
AS2( xor esi, z ) \
AS2( and esi, x ) \
AS2( lea w, [ebp + w + data] ) \
AS2( xor esi, z ) \
AS2( add w, esi ) \
AS2( mov esi, x ) \
AS2( rol w, s ) \
AS2( mov ebp, [edi + index * 4] ) \
AS2( add w, x )
#define MD5STEP2(w, x, y, z, index, data, s) \
AS2( xor esi, x ) \
AS2( and esi, z ) \
AS2( lea w, [ebp + w + data] ) \
AS2( xor esi, y ) \
AS2( add w, esi ) \
AS2( mov esi, x ) \
AS2( rol w, s ) \
AS2( mov ebp, [edi + index * 4] ) \
AS2( add w, x )
#define MD5STEP3(w, x, y, z, index, data, s) \
AS2( xor esi, z ) \
AS2( lea w, [ebp + w + data] ) \
AS2( xor esi, x ) \
AS2( add w, esi ) \
AS2( mov esi, x ) \
AS2( rol w, s ) \
AS2( mov ebp, [edi + index * 4] ) \
AS2( add w, x )
#define MD5STEP4(w, x, y, z, index, data, s) \
AS2( or esi, x ) \
AS2( lea w, [ebp + w + data] ) \
AS2( xor esi, y ) \
AS2( add w, esi ) \
AS2( mov esi, y ) \
AS2( rol w, s ) \
AS1( not esi ) \
AS2( mov ebp, [edi + index * 4] ) \
AS2( add w, x )
#ifdef _MSC_VER
__declspec(naked)
#endif
void MD5::AsmTransform(const byte* data, word32 times)
{
#ifdef __GNUC__
#define AS1(x) asm(#x);
#define AS2(x, y) asm(#x ", " #y);
#define PROLOG() \
asm(".intel_syntax noprefix"); \
AS2( movd mm3, edi ) \
AS2( movd mm4, ebx ) \
AS2( movd mm5, esi ) \
AS2( movd mm6, ebp ) \
AS2( mov ecx, DWORD PTR [ebp + 8] ) \
AS2( mov edi, DWORD PTR [ebp + 12] ) \
AS2( mov eax, DWORD PTR [ebp + 16] )
#define EPILOG() \
AS2( movd ebp, mm6 ) \
AS2( movd esi, mm5 ) \
AS2( movd ebx, mm4 ) \
AS2( mov esp, ebp ) \
AS2( movd edi, mm3 ) \
AS1( emms ) \
asm(".att_syntax");
#else
#define AS1(x) __asm x
#define AS2(x, y) __asm x, y
#define PROLOG() \
AS1( push ebp ) \
AS2( mov ebp, esp ) \
AS2( movd mm3, edi ) \
AS2( movd mm4, ebx ) \
AS2( movd mm5, esi ) \
AS2( movd mm6, ebp ) \
AS2( mov edi, DWORD PTR [ebp + 8] ) \
AS2( mov eax, DWORD PTR [ebp + 12] )
#define EPILOG() \
AS2( movd ebp, mm6 ) \
AS2( movd esi, mm5 ) \
AS2( movd ebx, mm4 ) \
AS2( movd edi, mm3 ) \
AS2( mov esp, ebp ) \
AS1( pop ebp ) \
AS1( emms ) \
AS1( ret 8 )
#endif
PROLOG()
AS2( mov esi, ecx )
#ifdef OLD_GCC_OFFSET
AS2( add esi, 20 ) // digest_[0]
#else
AS2( add esi, 16 ) // digest_[0]
#endif
AS2( movd mm2, eax ) // store times_
AS2( movd mm1, esi ) // store digest_
AS2( mov eax, [esi] ) // a
AS2( mov ebx, [esi + 4] ) // b
AS2( mov ecx, [esi + 8] ) // c
AS2( mov edx, [esi + 12] ) // d
AS1(loopStart:)
// set up
AS2( mov esi, ecx )
AS2( mov ebp, [edi] )
MD5STEP1( eax, ebx, ecx, edx, 1, 0xd76aa478, 7)
MD5STEP1( edx, eax, ebx, ecx, 2, 0xe8c7b756, 12)
MD5STEP1( ecx, edx, eax, ebx, 3, 0x242070db, 17)
MD5STEP1( ebx, ecx, edx, eax, 4, 0xc1bdceee, 22)
MD5STEP1( eax, ebx, ecx, edx, 5, 0xf57c0faf, 7)
MD5STEP1( edx, eax, ebx, ecx, 6, 0x4787c62a, 12)
MD5STEP1( ecx, edx, eax, ebx, 7, 0xa8304613, 17)
MD5STEP1( ebx, ecx, edx, eax, 8, 0xfd469501, 22)
MD5STEP1( eax, ebx, ecx, edx, 9, 0x698098d8, 7)
MD5STEP1( edx, eax, ebx, ecx, 10, 0x8b44f7af, 12)
MD5STEP1( ecx, edx, eax, ebx, 11, 0xffff5bb1, 17)
MD5STEP1( ebx, ecx, edx, eax, 12, 0x895cd7be, 22)
MD5STEP1( eax, ebx, ecx, edx, 13, 0x6b901122, 7)
MD5STEP1( edx, eax, ebx, ecx, 14, 0xfd987193, 12)
MD5STEP1( ecx, edx, eax, ebx, 15, 0xa679438e, 17)
MD5STEP1( ebx, ecx, edx, eax, 1, 0x49b40821, 22)
MD5STEP2( eax, ebx, ecx, edx, 6, 0xf61e2562, 5)
MD5STEP2( edx, eax, ebx, ecx, 11, 0xc040b340, 9)
MD5STEP2( ecx, edx, eax, ebx, 0, 0x265e5a51, 14)
MD5STEP2( ebx, ecx, edx, eax, 5, 0xe9b6c7aa, 20)
MD5STEP2( eax, ebx, ecx, edx, 10, 0xd62f105d, 5)
MD5STEP2( edx, eax, ebx, ecx, 15, 0x02441453, 9)
MD5STEP2( ecx, edx, eax, ebx, 4, 0xd8a1e681, 14)
MD5STEP2( ebx, ecx, edx, eax, 9, 0xe7d3fbc8, 20)
MD5STEP2( eax, ebx, ecx, edx, 14, 0x21e1cde6, 5)
MD5STEP2( edx, eax, ebx, ecx, 3, 0xc33707d6, 9)
MD5STEP2( ecx, edx, eax, ebx, 8, 0xf4d50d87, 14)
MD5STEP2( ebx, ecx, edx, eax, 13, 0x455a14ed, 20)
MD5STEP2( eax, ebx, ecx, edx, 2, 0xa9e3e905, 5)
MD5STEP2( edx, eax, ebx, ecx, 7, 0xfcefa3f8, 9)
MD5STEP2( ecx, edx, eax, ebx, 12, 0x676f02d9, 14)
MD5STEP2( ebx, ecx, edx, eax, 5, 0x8d2a4c8a, 20)
MD5STEP3( eax, ebx, ecx, edx, 8, 0xfffa3942, 4)
MD5STEP3( edx, eax, ebx, ecx, 11, 0x8771f681, 11)
MD5STEP3( ecx, edx, eax, ebx, 14, 0x6d9d6122, 16)
MD5STEP3( ebx, ecx, edx, eax, 1, 0xfde5380c, 23)
MD5STEP3( eax, ebx, ecx, edx, 4, 0xa4beea44, 4)
MD5STEP3( edx, eax, ebx, ecx, 7, 0x4bdecfa9, 11)
MD5STEP3( ecx, edx, eax, ebx, 10, 0xf6bb4b60, 16)
MD5STEP3( ebx, ecx, edx, eax, 13, 0xbebfbc70, 23)
MD5STEP3( eax, ebx, ecx, edx, 0, 0x289b7ec6, 4)
MD5STEP3( edx, eax, ebx, ecx, 3, 0xeaa127fa, 11)
MD5STEP3( ecx, edx, eax, ebx, 6, 0xd4ef3085, 16)
MD5STEP3( ebx, ecx, edx, eax, 9, 0x04881d05, 23)
MD5STEP3( eax, ebx, ecx, edx, 12, 0xd9d4d039, 4)
MD5STEP3( edx, eax, ebx, ecx, 15, 0xe6db99e5, 11)
MD5STEP3( ecx, edx, eax, ebx, 2, 0x1fa27cf8, 16)
MD5STEP3( ebx, ecx, edx, eax, 0, 0xc4ac5665, 23)
// setup
AS2( mov esi, edx )
AS1( not esi )
MD5STEP4( eax, ebx, ecx, edx, 7, 0xf4292244, 6)
MD5STEP4( edx, eax, ebx, ecx, 14, 0x432aff97, 10)
MD5STEP4( ecx, edx, eax, ebx, 5, 0xab9423a7, 15)
MD5STEP4( ebx, ecx, edx, eax, 12, 0xfc93a039, 21)
MD5STEP4( eax, ebx, ecx, edx, 3, 0x655b59c3, 6)
MD5STEP4( edx, eax, ebx, ecx, 10, 0x8f0ccc92, 10)
MD5STEP4( ecx, edx, eax, ebx, 1, 0xffeff47d, 15)
MD5STEP4( ebx, ecx, edx, eax, 8, 0x85845dd1, 21)
MD5STEP4( eax, ebx, ecx, edx, 15, 0x6fa87e4f, 6)
MD5STEP4( edx, eax, ebx, ecx, 6, 0xfe2ce6e0, 10)
MD5STEP4( ecx, edx, eax, ebx, 13, 0xa3014314, 15)
MD5STEP4( ebx, ecx, edx, eax, 4, 0x4e0811a1, 21)
MD5STEP4( eax, ebx, ecx, edx, 11, 0xf7537e82, 6)
MD5STEP4( edx, eax, ebx, ecx, 2, 0xbd3af235, 10)
MD5STEP4( ecx, edx, eax, ebx, 9, 0x2ad7d2bb, 15)
MD5STEP4( ebx, ecx, edx, eax, 9, 0xeb86d391, 21)
AS2( movd esi, mm1 ) // digest_
AS2( add [esi], eax ) // write out
AS2( add [esi + 4], ebx )
AS2( add [esi + 8], ecx )
AS2( add [esi + 12], edx )
AS2( add edi, 64 )
AS2( mov eax, [esi] )
AS2( mov ebx, [esi + 4] )
AS2( mov ecx, [esi + 8] )
AS2( mov edx, [esi + 12] )
AS2( movd ebp, mm2 ) // times
AS1( dec ebp )
AS2( movd mm2, ebp )
AS1( jnz loopStart )
EPILOG()
}
#endif // DO_MD5_ASM
void MD5::Transform()
{
#define F1(x, y, z) (z ^ (x & (y ^ z)))
#define F2(x, y, z) F1(z, x, y)
#define F3(x, y, z) (x ^ y ^ z)
#define F4(x, y, z) (y ^ (x | ~z))
#define MD5STEP(f, w, x, y, z, data, s) \
w = rotlFixed(w + f(x, y, z) + data, s) + x
// Copy context->state[] to working vars
word32 a = digest_[0];
word32 b = digest_[1];
word32 c = digest_[2];
word32 d = digest_[3];
MD5STEP(F1, a, b, c, d, buffer_[0] + 0xd76aa478, 7);
MD5STEP(F1, d, a, b, c, buffer_[1] + 0xe8c7b756, 12);
MD5STEP(F1, c, d, a, b, buffer_[2] + 0x242070db, 17);
MD5STEP(F1, b, c, d, a, buffer_[3] + 0xc1bdceee, 22);
MD5STEP(F1, a, b, c, d, buffer_[4] + 0xf57c0faf, 7);
MD5STEP(F1, d, a, b, c, buffer_[5] + 0x4787c62a, 12);
MD5STEP(F1, c, d, a, b, buffer_[6] + 0xa8304613, 17);
MD5STEP(F1, b, c, d, a, buffer_[7] + 0xfd469501, 22);
MD5STEP(F1, a, b, c, d, buffer_[8] + 0x698098d8, 7);
MD5STEP(F1, d, a, b, c, buffer_[9] + 0x8b44f7af, 12);
MD5STEP(F1, c, d, a, b, buffer_[10] + 0xffff5bb1, 17);
MD5STEP(F1, b, c, d, a, buffer_[11] + 0x895cd7be, 22);
MD5STEP(F1, a, b, c, d, buffer_[12] + 0x6b901122, 7);
MD5STEP(F1, d, a, b, c, buffer_[13] + 0xfd987193, 12);
MD5STEP(F1, c, d, a, b, buffer_[14] + 0xa679438e, 17);
MD5STEP(F1, b, c, d, a, buffer_[15] + 0x49b40821, 22);
MD5STEP(F2, a, b, c, d, buffer_[1] + 0xf61e2562, 5);
MD5STEP(F2, d, a, b, c, buffer_[6] + 0xc040b340, 9);
MD5STEP(F2, c, d, a, b, buffer_[11] + 0x265e5a51, 14);
MD5STEP(F2, b, c, d, a, buffer_[0] + 0xe9b6c7aa, 20);
MD5STEP(F2, a, b, c, d, buffer_[5] + 0xd62f105d, 5);
MD5STEP(F2, d, a, b, c, buffer_[10] + 0x02441453, 9);
MD5STEP(F2, c, d, a, b, buffer_[15] + 0xd8a1e681, 14);
MD5STEP(F2, b, c, d, a, buffer_[4] + 0xe7d3fbc8, 20);
MD5STEP(F2, a, b, c, d, buffer_[9] + 0x21e1cde6, 5);
MD5STEP(F2, d, a, b, c, buffer_[14] + 0xc33707d6, 9);
MD5STEP(F2, c, d, a, b, buffer_[3] + 0xf4d50d87, 14);
MD5STEP(F2, b, c, d, a, buffer_[8] + 0x455a14ed, 20);
MD5STEP(F2, a, b, c, d, buffer_[13] + 0xa9e3e905, 5);
MD5STEP(F2, d, a, b, c, buffer_[2] + 0xfcefa3f8, 9);
MD5STEP(F2, c, d, a, b, buffer_[7] + 0x676f02d9, 14);
MD5STEP(F2, b, c, d, a, buffer_[12] + 0x8d2a4c8a, 20);
MD5STEP(F3, a, b, c, d, buffer_[5] + 0xfffa3942, 4);
MD5STEP(F3, d, a, b, c, buffer_[8] + 0x8771f681, 11);
MD5STEP(F3, c, d, a, b, buffer_[11] + 0x6d9d6122, 16);
MD5STEP(F3, b, c, d, a, buffer_[14] + 0xfde5380c, 23);
MD5STEP(F3, a, b, c, d, buffer_[1] + 0xa4beea44, 4);
MD5STEP(F3, d, a, b, c, buffer_[4] + 0x4bdecfa9, 11);
MD5STEP(F3, c, d, a, b, buffer_[7] + 0xf6bb4b60, 16);
MD5STEP(F3, b, c, d, a, buffer_[10] + 0xbebfbc70, 23);
MD5STEP(F3, a, b, c, d, buffer_[13] + 0x289b7ec6, 4);
MD5STEP(F3, d, a, b, c, buffer_[0] + 0xeaa127fa, 11);
MD5STEP(F3, c, d, a, b, buffer_[3] + 0xd4ef3085, 16);
MD5STEP(F3, b, c, d, a, buffer_[6] + 0x04881d05, 23);
MD5STEP(F3, a, b, c, d, buffer_[9] + 0xd9d4d039, 4);
MD5STEP(F3, d, a, b, c, buffer_[12] + 0xe6db99e5, 11);
MD5STEP(F3, c, d, a, b, buffer_[15] + 0x1fa27cf8, 16);
MD5STEP(F3, b, c, d, a, buffer_[2] + 0xc4ac5665, 23);
MD5STEP(F4, a, b, c, d, buffer_[0] + 0xf4292244, 6);
MD5STEP(F4, d, a, b, c, buffer_[7] + 0x432aff97, 10);
MD5STEP(F4, c, d, a, b, buffer_[14] + 0xab9423a7, 15);
MD5STEP(F4, b, c, d, a, buffer_[5] + 0xfc93a039, 21);
MD5STEP(F4, a, b, c, d, buffer_[12] + 0x655b59c3, 6);
MD5STEP(F4, d, a, b, c, buffer_[3] + 0x8f0ccc92, 10);
MD5STEP(F4, c, d, a, b, buffer_[10] + 0xffeff47d, 15);
MD5STEP(F4, b, c, d, a, buffer_[1] + 0x85845dd1, 21);
MD5STEP(F4, a, b, c, d, buffer_[8] + 0x6fa87e4f, 6);
MD5STEP(F4, d, a, b, c, buffer_[15] + 0xfe2ce6e0, 10);
MD5STEP(F4, c, d, a, b, buffer_[6] + 0xa3014314, 15);
MD5STEP(F4, b, c, d, a, buffer_[13] + 0x4e0811a1, 21);
MD5STEP(F4, a, b, c, d, buffer_[4] + 0xf7537e82, 6);
MD5STEP(F4, d, a, b, c, buffer_[11] + 0xbd3af235, 10);
MD5STEP(F4, c, d, a, b, buffer_[2] + 0x2ad7d2bb, 15);
MD5STEP(F4, b, c, d, a, buffer_[9] + 0xeb86d391, 21);
// Add the working vars back into digest state[]
digest_[0] += a;
digest_[1] += b;
digest_[2] += c;
digest_[3] += d;
// Wipe variables
a = b = c = d = 0;
}
} // namespace
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