tiger.cpp
// tiger.cpp - originally written and placed in the public domain by Wei Dai
#include "pch.h"
#include "config.h"
#include "tiger.h"
#include "misc.h"
#include "cpu.h"
#if defined(CRYPTOPP_DISABLE_TIGER_ASM)
# undef CRYPTOPP_X86_ASM_AVAILABLE
# undef CRYPTOPP_X32_ASM_AVAILABLE
# undef CRYPTOPP_X64_ASM_AVAILABLE
# undef CRYPTOPP_SSE2_ASM_AVAILABLE
#endif
NAMESPACE_BEGIN(CryptoPP)
std::string Tiger::AlgorithmProvider() const
{
#ifndef CRYPTOPP_DISABLE_TIGER_ASM
# if CRYPTOPP_SSE2_ASM_AVAILABLE
if (HasSSE2())
return "SSE2";
# endif
#endif
return "C++";
}
void Tiger::InitState(HashWordType *state)
{
state[0] = W64LIT(0x0123456789ABCDEF);
state[1] = W64LIT(0xFEDCBA9876543210);
state[2] = W64LIT(0xF096A5B4C3B2E187);
}
void Tiger::TruncatedFinal(byte *digest, size_t digestSize)
{
CRYPTOPP_ASSERT(digest != NULLPTR);
ThrowIfInvalidTruncatedSize(digestSize);
PadLastBlock(56, 0x01);
CorrectEndianess(m_data, m_data, 56);
m_data[7] = GetBitCountLo();
Transform(m_state, m_data);
CorrectEndianess(m_state, m_state, DigestSize());
std::memcpy(digest, m_state, digestSize);
Restart(); // reinit for next use
}
void Tiger::Transform (word64 *state, const word64 *data)
{
#if CRYPTOPP_SSE2_ASM_AVAILABLE && CRYPTOPP_BOOL_X86
if (HasSSE2())
{
#ifdef __GNUC__
__asm__ __volatile__
(
INTEL_NOPREFIX
AS_PUSH_IF86(bx)
#else
AS2( lea edx, [table])
AS2( mov eax, state)
AS2( mov esi, data)
#endif
AS2( movq mm0, [eax])
AS2( movq mm1, [eax+1*8])
AS2( movq mm5, mm1)
AS2( movq mm2, [eax+2*8])
AS2( movq mm7, [edx+4*2048+0*8])
AS2( movq mm6, [edx+4*2048+1*8])
AS2( mov ecx, esp)
AS2( and esp, 0xfffffff0)
AS2( sub esp, 8*8)
AS_PUSH_IF86(cx)
#define SSE2_round(a,b,c,x,mul) \
AS2( pxor c, [x])\
AS2( movd ecx, c)\
AS2( movzx edi, cl)\
AS2( movq mm3, [edx+0*2048+edi*8])\
AS2( movzx edi, ch)\
AS2( movq mm4, [edx+3*2048+edi*8])\
AS2( shr ecx, 16)\
AS2( movzx edi, cl)\
AS2( pxor mm3, [edx+1*2048+edi*8])\
AS2( movzx edi, ch)\
AS2( pxor mm4, [edx+2*2048+edi*8])\
AS3( pextrw ecx, c, 2)\
AS2( movzx edi, cl)\
AS2( pxor mm3, [edx+2*2048+edi*8])\
AS2( movzx edi, ch)\
AS2( pxor mm4, [edx+1*2048+edi*8])\
AS3( pextrw ecx, c, 3)\
AS2( movzx edi, cl)\
AS2( pxor mm3, [edx+3*2048+edi*8])\
AS2( psubq a, mm3)\
AS2( movzx edi, ch)\
AS2( pxor mm4, [edx+0*2048+edi*8])\
AS2( paddq b, mm4)\
SSE2_mul_##mul(b)
#define SSE2_mul_5(b) \
AS2( movq mm3, b)\
AS2( psllq b, 2)\
AS2( paddq b, mm3)
#define SSE2_mul_7(b) \
AS2( movq mm3, b)\
AS2( psllq b, 3)\
AS2( psubq b, mm3)
#define SSE2_mul_9(b) \
AS2( movq mm3, b)\
AS2( psllq b, 3)\
AS2( paddq b, mm3)
#define label2_5 1
#define label2_7 2
#define label2_9 3
#define SSE2_pass(A,B,C,mul,X) \
AS2( xor ebx, ebx)\
ASL(mul)\
SSE2_round(A,B,C,X+0*8+ebx,mul)\
SSE2_round(B,C,A,X+1*8+ebx,mul)\
AS2( cmp ebx, 6*8)\
ASJ( je, label2_##mul, f)\
SSE2_round(C,A,B,X+2*8+ebx,mul)\
AS2( add ebx, 3*8)\
ASJ( jmp, mul, b)\
ASL(label2_##mul)
#define SSE2_key_schedule(Y,X) \
AS2( movq mm3, [X+7*8])\
AS2( pxor mm3, mm6)\
AS2( movq mm4, [X+0*8])\
AS2( psubq mm4, mm3)\
AS2( movq [Y+0*8], mm4)\
AS2( pxor mm4, [X+1*8])\
AS2( movq mm3, mm4)\
AS2( movq [Y+1*8], mm4)\
AS2( paddq mm4, [X+2*8])\
AS2( pxor mm3, mm7)\
AS2( psllq mm3, 19)\
AS2( movq [Y+2*8], mm4)\
AS2( pxor mm3, mm4)\
AS2( movq mm4, [X+3*8])\
AS2( psubq mm4, mm3)\
AS2( movq [Y+3*8], mm4)\
AS2( pxor mm4, [X+4*8])\
AS2( movq mm3, mm4)\
AS2( movq [Y+4*8], mm4)\
AS2( paddq mm4, [X+5*8])\
AS2( pxor mm3, mm7)\
AS2( psrlq mm3, 23)\
AS2( movq [Y+5*8], mm4)\
AS2( pxor mm3, mm4)\
AS2( movq mm4, [X+6*8])\
AS2( psubq mm4, mm3)\
AS2( movq [Y+6*8], mm4)\
AS2( pxor mm4, [X+7*8])\
AS2( movq mm3, mm4)\
AS2( movq [Y+7*8], mm4)\
AS2( paddq mm4, [Y+0*8])\
AS2( pxor mm3, mm7)\
AS2( psllq mm3, 19)\
AS2( movq [Y+0*8], mm4)\
AS2( pxor mm3, mm4)\
AS2( movq mm4, [Y+1*8])\
AS2( psubq mm4, mm3)\
AS2( movq [Y+1*8], mm4)\
AS2( pxor mm4, [Y+2*8])\
AS2( movq mm3, mm4)\
AS2( movq [Y+2*8], mm4)\
AS2( paddq mm4, [Y+3*8])\
AS2( pxor mm3, mm7)\
AS2( psrlq mm3, 23)\
AS2( movq [Y+3*8], mm4)\
AS2( pxor mm3, mm4)\
AS2( movq mm4, [Y+4*8])\
AS2( psubq mm4, mm3)\
AS2( movq [Y+4*8], mm4)\
AS2( pxor mm4, [Y+5*8])\
AS2( movq [Y+5*8], mm4)\
AS2( paddq mm4, [Y+6*8])\
AS2( movq [Y+6*8], mm4)\
AS2( pxor mm4, [edx+4*2048+2*8])\
AS2( movq mm3, [Y+7*8])\
AS2( psubq mm3, mm4)\
AS2( movq [Y+7*8], mm3)
SSE2_pass(mm0, mm1, mm2, 5, esi)
SSE2_key_schedule(esp+4, esi)
SSE2_pass(mm2, mm0, mm1, 7, esp+4)
SSE2_key_schedule(esp+4, esp+4)
SSE2_pass(mm1, mm2, mm0, 9, esp+4)
AS2( pxor mm0, [eax+0*8])
AS2( movq [eax+0*8], mm0)
AS2( psubq mm1, mm5)
AS2( movq [eax+1*8], mm1)
AS2( paddq mm2, [eax+2*8])
AS2( movq [eax+2*8], mm2)
AS_POP_IF86(sp)
AS1( emms)
#ifdef __GNUC__
AS_POP_IF86(bx)
ATT_PREFIX
:
: "a" (state), "S" (data), "d" (table)
: "%ecx", "%edi", "memory", "cc"
);
#endif
}
else
#endif
{
word64 a = state[0];
word64 b = state[1];
word64 c = state[2];
word64 Y[8];
#define t1 (table)
#define t2 (table+256)
#define t3 (table+256*2)
#define t4 (table+256*3)
#define round(a,b,c,x,mul) \
c ^= x; \
a -= t1[GETBYTE(c,0)] ^ t2[GETBYTE(c,2)] ^ t3[GETBYTE(c,4)] ^ t4[GETBYTE(c,6)]; \
b += t4[GETBYTE(c,1)] ^ t3[GETBYTE(c,3)] ^ t2[GETBYTE(c,5)] ^ t1[GETBYTE(c,7)]; \
b *= mul
#define pass(a,b,c,mul,X) {\
int i=0;\
while (true)\
{\
round(a,b,c,X[i+0],mul); \
round(b,c,a,X[i+1],mul); \
if (i==6)\
break;\
round(c,a,b,X[i+2],mul); \
i+=3;\
}}
#define key_schedule(Y,X) \
Y[0] = X[0] - (X[7]^W64LIT(0xA5A5A5A5A5A5A5A5)); \
Y[1] = X[1] ^ Y[0]; \
Y[2] = X[2] + Y[1]; \
Y[3] = X[3] - (Y[2] ^ ((~Y[1])<<19)); \
Y[4] = X[4] ^ Y[3]; \
Y[5] = X[5] + Y[4]; \
Y[6] = X[6] - (Y[5] ^ ((~Y[4])>>23)); \
Y[7] = X[7] ^ Y[6]; \
Y[0] += Y[7]; \
Y[1] -= Y[0] ^ ((~Y[7])<<19); \
Y[2] ^= Y[1]; \
Y[3] += Y[2]; \
Y[4] -= Y[3] ^ ((~Y[2])>>23); \
Y[5] ^= Y[4]; \
Y[6] += Y[5]; \
Y[7] -= Y[6] ^ W64LIT(0x0123456789ABCDEF)
pass(a,b,c,5,data);
key_schedule(Y,data);
pass(c,a,b,7,Y);
key_schedule(Y,Y);
pass(b,c,a,9,Y);
state[0] = a ^ state[0];
state[1] = b - state[1];
state[2] = c + state[2];
}
}
NAMESPACE_END
IteratedHashWithStaticTransform< word64, LittleEndian, 64, 24, Tiger >::DigestSize
unsigned int DigestSize() const
Provides the digest size of the hash.
Definition iterhash.h:191
Tiger::Transform
static void Transform(word64 *digest, const word64 *data)
Operate the hash.
Definition tiger.cpp:54
Tiger::InitState
static void InitState(HashWordType *state)
Initialize state array.
Definition tiger.cpp:30
Tiger::TruncatedFinal
void TruncatedFinal(byte *digest, size_t digestSize)
Computes the hash of the current message.
Definition tiger.cpp:37
config.h
Library configuration file.
W64LIT
#define W64LIT(x)
Declare an unsigned word64.
Definition config_int.h:129
word64
unsigned long long word64
64-bit unsigned datatype
Definition config_int.h:101
cpu.h
Functions for CPU features and intrinsics.
misc.h
Utility functions for the Crypto++ library.
CryptoPP
Crypto++ library namespace.
pch.h
Precompiled header file.
tiger.h
Classes for the Tiger message digest.
CRYPTOPP_ASSERT
#define CRYPTOPP_ASSERT(exp)
Debugging and diagnostic assertion.
Definition trap.h:68