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-rw-r--r--CryptoPP/gcm.cpp1656
1 files changed, 828 insertions, 828 deletions
diff --git a/CryptoPP/gcm.cpp b/CryptoPP/gcm.cpp
index 237325d9f..2304f96d8 100644
--- a/CryptoPP/gcm.cpp
+++ b/CryptoPP/gcm.cpp
@@ -1,828 +1,828 @@
-// gcm.cpp - written and placed in the public domain by Wei Dai
-
-// use "cl /EP /P /DCRYPTOPP_GENERATE_X64_MASM gcm.cpp" to generate MASM code
-
-#include "pch.h"
-
-#ifndef CRYPTOPP_IMPORTS
-#ifndef CRYPTOPP_GENERATE_X64_MASM
-
-#include "gcm.h"
-#include "cpu.h"
-
-NAMESPACE_BEGIN(CryptoPP)
-
-word16 GCM_Base::s_reductionTable[256];
-volatile bool GCM_Base::s_reductionTableInitialized = false;
-
-void GCM_Base::GCTR::IncrementCounterBy256()
-{
- IncrementCounterByOne(m_counterArray+BlockSize()-4, 3);
-}
-
-#if 0
-// preserved for testing
-void gcm_gf_mult(const unsigned char *a, const unsigned char *b, unsigned char *c)
-{
- word64 Z0=0, Z1=0, V0, V1;
-
- typedef BlockGetAndPut<word64, BigEndian> Block;
- Block::Get(a)(V0)(V1);
-
- for (int i=0; i<16; i++)
- {
- for (int j=0x80; j!=0; j>>=1)
- {
- int x = b[i] & j;
- Z0 ^= x ? V0 : 0;
- Z1 ^= x ? V1 : 0;
- x = (int)V1 & 1;
- V1 = (V1>>1) | (V0<<63);
- V0 = (V0>>1) ^ (x ? W64LIT(0xe1) << 56 : 0);
- }
- }
- Block::Put(NULL, c)(Z0)(Z1);
-}
-
-__m128i _mm_clmulepi64_si128(const __m128i &a, const __m128i &b, int i)
-{
- word64 A[1] = {ByteReverse(((word64*)&a)[i&1])};
- word64 B[1] = {ByteReverse(((word64*)&b)[i>>4])};
-
- PolynomialMod2 pa((byte *)A, 8);
- PolynomialMod2 pb((byte *)B, 8);
- PolynomialMod2 c = pa*pb;
-
- __m128i output;
- for (int i=0; i<16; i++)
- ((byte *)&output)[i] = c.GetByte(i);
- return output;
-}
-#endif
-
-#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE || CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
-inline static void SSE2_Xor16(byte *a, const byte *b, const byte *c)
-{
-#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE
- *(__m128i *)a = _mm_xor_si128(*(__m128i *)b, *(__m128i *)c);
-#else
- asm ("movdqa %1, %%xmm0; pxor %2, %%xmm0; movdqa %%xmm0, %0;" : "=m" (a[0]) : "m"(b[0]), "m"(c[0]));
-#endif
-}
-#endif
-
-inline static void Xor16(byte *a, const byte *b, const byte *c)
-{
- ((word64 *)a)[0] = ((word64 *)b)[0] ^ ((word64 *)c)[0];
- ((word64 *)a)[1] = ((word64 *)b)[1] ^ ((word64 *)c)[1];
-}
-
-#if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE
-static CRYPTOPP_ALIGN_DATA(16) const word64 s_clmulConstants64[] = {
- W64LIT(0xe100000000000000), W64LIT(0xc200000000000000),
- W64LIT(0x08090a0b0c0d0e0f), W64LIT(0x0001020304050607),
- W64LIT(0x0001020304050607), W64LIT(0x08090a0b0c0d0e0f)};
-static const __m128i *s_clmulConstants = (const __m128i *)s_clmulConstants64;
-static const unsigned int s_clmulTableSizeInBlocks = 8;
-
-inline __m128i CLMUL_Reduce(__m128i c0, __m128i c1, __m128i c2, const __m128i &r)
-{
- /*
- The polynomial to be reduced is c0 * x^128 + c1 * x^64 + c2. c0t below refers to the most
- significant half of c0 as a polynomial, which, due to GCM's bit reflection, are in the
- rightmost bit positions, and the lowest byte addresses.
-
- c1 ^= c0t * 0xc200000000000000
- c2t ^= c0t
- t = shift (c1t ^ c0b) left 1 bit
- c2 ^= t * 0xe100000000000000
- c2t ^= c1b
- shift c2 left 1 bit and xor in lowest bit of c1t
- */
-#if 0 // MSVC 2010 workaround: see http://connect.microsoft.com/VisualStudio/feedback/details/575301
- c2 = _mm_xor_si128(c2, _mm_move_epi64(c0));
-#else
- c1 = _mm_xor_si128(c1, _mm_slli_si128(c0, 8));
-#endif
- c1 = _mm_xor_si128(c1, _mm_clmulepi64_si128(c0, r, 0x10));
- c0 = _mm_srli_si128(c0, 8);
- c0 = _mm_xor_si128(c0, c1);
- c0 = _mm_slli_epi64(c0, 1);
- c0 = _mm_clmulepi64_si128(c0, r, 0);
- c2 = _mm_xor_si128(c2, c0);
- c2 = _mm_xor_si128(c2, _mm_srli_si128(c1, 8));
- c1 = _mm_unpacklo_epi64(c1, c2);
- c1 = _mm_srli_epi64(c1, 63);
- c2 = _mm_slli_epi64(c2, 1);
- return _mm_xor_si128(c2, c1);
-}
-
-inline __m128i CLMUL_GF_Mul(const __m128i &x, const __m128i &h, const __m128i &r)
-{
- __m128i c0 = _mm_clmulepi64_si128(x,h,0);
- __m128i c1 = _mm_xor_si128(_mm_clmulepi64_si128(x,h,1), _mm_clmulepi64_si128(x,h,0x10));
- __m128i c2 = _mm_clmulepi64_si128(x,h,0x11);
-
- return CLMUL_Reduce(c0, c1, c2, r);
-}
-#endif
-
-void GCM_Base::SetKeyWithoutResync(const byte *userKey, size_t keylength, const NameValuePairs &params)
-{
- BlockCipher &blockCipher = AccessBlockCipher();
- blockCipher.SetKey(userKey, keylength, params);
-
- if (blockCipher.BlockSize() != REQUIRED_BLOCKSIZE)
- throw InvalidArgument(AlgorithmName() + ": block size of underlying block cipher is not 16");
-
- int tableSize, i, j, k;
-
-#if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE
- if (HasCLMUL())
- {
- params.GetIntValue(Name::TableSize(), tableSize); // avoid "parameter not used" error
- tableSize = s_clmulTableSizeInBlocks * REQUIRED_BLOCKSIZE;
- }
- else
-#endif
- {
- if (params.GetIntValue(Name::TableSize(), tableSize))
- tableSize = (tableSize >= 64*1024) ? 64*1024 : 2*1024;
- else
- tableSize = (GetTablesOption() == GCM_64K_Tables) ? 64*1024 : 2*1024;
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1300 && _MSC_VER < 1400)
- // VC 2003 workaround: compiler generates bad code for 64K tables
- tableSize = 2*1024;
-#endif
- }
-
- m_buffer.resize(3*REQUIRED_BLOCKSIZE + tableSize);
- byte *table = MulTable();
- byte *hashKey = HashKey();
- memset(hashKey, 0, REQUIRED_BLOCKSIZE);
- blockCipher.ProcessBlock(hashKey);
-
-#if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE
- if (HasCLMUL())
- {
- const __m128i r = s_clmulConstants[0];
- __m128i h0 = _mm_shuffle_epi8(_mm_load_si128((__m128i *)hashKey), s_clmulConstants[1]);
- __m128i h = h0;
-
- for (i=0; i<tableSize; i+=32)
- {
- __m128i h1 = CLMUL_GF_Mul(h, h0, r);
- _mm_storel_epi64((__m128i *)(table+i), h);
- _mm_storeu_si128((__m128i *)(table+i+16), h1);
- _mm_storeu_si128((__m128i *)(table+i+8), h);
- _mm_storel_epi64((__m128i *)(table+i+8), h1);
- h = CLMUL_GF_Mul(h1, h0, r);
- }
-
- return;
- }
-#endif
-
- word64 V0, V1;
- typedef BlockGetAndPut<word64, BigEndian> Block;
- Block::Get(hashKey)(V0)(V1);
-
- if (tableSize == 64*1024)
- {
- for (i=0; i<128; i++)
- {
- k = i%8;
- Block::Put(NULL, table+(i/8)*256*16+(size_t(1)<<(11-k)))(V0)(V1);
-
- int x = (int)V1 & 1;
- V1 = (V1>>1) | (V0<<63);
- V0 = (V0>>1) ^ (x ? W64LIT(0xe1) << 56 : 0);
- }
-
- for (i=0; i<16; i++)
- {
- memset(table+i*256*16, 0, 16);
-#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE || CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
- if (HasSSE2())
- for (j=2; j<=0x80; j*=2)
- for (k=1; k<j; k++)
- SSE2_Xor16(table+i*256*16+(j+k)*16, table+i*256*16+j*16, table+i*256*16+k*16);
- else
-#endif
- for (j=2; j<=0x80; j*=2)
- for (k=1; k<j; k++)
- Xor16(table+i*256*16+(j+k)*16, table+i*256*16+j*16, table+i*256*16+k*16);
- }
- }
- else
- {
- if (!s_reductionTableInitialized)
- {
- s_reductionTable[0] = 0;
- word16 x = 0x01c2;
- s_reductionTable[1] = ByteReverse(x);
- for (int i=2; i<=0x80; i*=2)
- {
- x <<= 1;
- s_reductionTable[i] = ByteReverse(x);
- for (int j=1; j<i; j++)
- s_reductionTable[i+j] = s_reductionTable[i] ^ s_reductionTable[j];
- }
- s_reductionTableInitialized = true;
- }
-
- for (i=0; i<128-24; i++)
- {
- k = i%32;
- if (k < 4)
- Block::Put(NULL, table+1024+(i/32)*256+(size_t(1)<<(7-k)))(V0)(V1);
- else if (k < 8)
- Block::Put(NULL, table+(i/32)*256+(size_t(1)<<(11-k)))(V0)(V1);
-
- int x = (int)V1 & 1;
- V1 = (V1>>1) | (V0<<63);
- V0 = (V0>>1) ^ (x ? W64LIT(0xe1) << 56 : 0);
- }
-
- for (i=0; i<4; i++)
- {
- memset(table+i*256, 0, 16);
- memset(table+1024+i*256, 0, 16);
-#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE || CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
- if (HasSSE2())
- for (j=2; j<=8; j*=2)
- for (k=1; k<j; k++)
- {
- SSE2_Xor16(table+i*256+(j+k)*16, table+i*256+j*16, table+i*256+k*16);
- SSE2_Xor16(table+1024+i*256+(j+k)*16, table+1024+i*256+j*16, table+1024+i*256+k*16);
- }
- else
-#endif
- for (j=2; j<=8; j*=2)
- for (k=1; k<j; k++)
- {
- Xor16(table+i*256+(j+k)*16, table+i*256+j*16, table+i*256+k*16);
- Xor16(table+1024+i*256+(j+k)*16, table+1024+i*256+j*16, table+1024+i*256+k*16);
- }
- }
- }
-}
-
-inline void GCM_Base::ReverseHashBufferIfNeeded()
-{
-#if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE
- if (HasCLMUL())
- {
- __m128i &x = *(__m128i *)HashBuffer();
- x = _mm_shuffle_epi8(x, s_clmulConstants[1]);
- }
-#endif
-}
-
-void GCM_Base::Resync(const byte *iv, size_t len)
-{
- BlockCipher &cipher = AccessBlockCipher();
- byte *hashBuffer = HashBuffer();
-
- if (len == 12)
- {
- memcpy(hashBuffer, iv, len);
- memset(hashBuffer+len, 0, 3);
- hashBuffer[len+3] = 1;
- }
- else
- {
- size_t origLen = len;
- memset(hashBuffer, 0, HASH_BLOCKSIZE);
-
- if (len >= HASH_BLOCKSIZE)
- {
- len = GCM_Base::AuthenticateBlocks(iv, len);
- iv += (origLen - len);
- }
-
- if (len > 0)
- {
- memcpy(m_buffer, iv, len);
- memset(m_buffer+len, 0, HASH_BLOCKSIZE-len);
- GCM_Base::AuthenticateBlocks(m_buffer, HASH_BLOCKSIZE);
- }
-
- PutBlock<word64, BigEndian, true>(NULL, m_buffer)(0)(origLen*8);
- GCM_Base::AuthenticateBlocks(m_buffer, HASH_BLOCKSIZE);
-
- ReverseHashBufferIfNeeded();
- }
-
- if (m_state >= State_IVSet)
- m_ctr.Resynchronize(hashBuffer, REQUIRED_BLOCKSIZE);
- else
- m_ctr.SetCipherWithIV(cipher, hashBuffer);
-
- m_ctr.Seek(HASH_BLOCKSIZE);
-
- memset(hashBuffer, 0, HASH_BLOCKSIZE);
-}
-
-unsigned int GCM_Base::OptimalDataAlignment() const
-{
- return
-#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE)
- HasSSE2() ? 16 :
-#endif
- GetBlockCipher().OptimalDataAlignment();
-}
-
-#pragma warning(disable: 4731) // frame pointer register 'ebp' modified by inline assembly code
-
-#endif // #ifndef CRYPTOPP_GENERATE_X64_MASM
-
-#ifdef CRYPTOPP_X64_MASM_AVAILABLE
-extern "C" {
-void GCM_AuthenticateBlocks_2K(const byte *data, size_t blocks, word64 *hashBuffer, const word16 *reductionTable);
-void GCM_AuthenticateBlocks_64K(const byte *data, size_t blocks, word64 *hashBuffer);
-}
-#endif
-
-#ifndef CRYPTOPP_GENERATE_X64_MASM
-
-size_t GCM_Base::AuthenticateBlocks(const byte *data, size_t len)
-{
-#if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE
- if (HasCLMUL())
- {
- const __m128i *table = (const __m128i *)MulTable();
- __m128i x = _mm_load_si128((__m128i *)HashBuffer());
- const __m128i r = s_clmulConstants[0], bswapMask = s_clmulConstants[1], bswapMask2 = s_clmulConstants[2];
-
- while (len >= 16)
- {
- size_t s = UnsignedMin(len/16, s_clmulTableSizeInBlocks), i=0;
- __m128i d, d2 = _mm_shuffle_epi8(_mm_loadu_si128((const __m128i *)(data+(s-1)*16)), bswapMask2);;
- __m128i c0 = _mm_setzero_si128();
- __m128i c1 = _mm_setzero_si128();
- __m128i c2 = _mm_setzero_si128();
-
- while (true)
- {
- __m128i h0 = _mm_load_si128(table+i);
- __m128i h1 = _mm_load_si128(table+i+1);
- __m128i h01 = _mm_xor_si128(h0, h1);
-
- if (++i == s)
- {
- d = _mm_shuffle_epi8(_mm_loadu_si128((const __m128i *)data), bswapMask);
- d = _mm_xor_si128(d, x);
- c0 = _mm_xor_si128(c0, _mm_clmulepi64_si128(d, h0, 0));
- c2 = _mm_xor_si128(c2, _mm_clmulepi64_si128(d, h1, 1));
- d = _mm_xor_si128(d, _mm_shuffle_epi32(d, _MM_SHUFFLE(1, 0, 3, 2)));
- c1 = _mm_xor_si128(c1, _mm_clmulepi64_si128(d, h01, 0));
- break;
- }
-
- d = _mm_shuffle_epi8(_mm_loadu_si128((const __m128i *)(data+(s-i)*16-8)), bswapMask2);
- c0 = _mm_xor_si128(c0, _mm_clmulepi64_si128(d2, h0, 1));
- c2 = _mm_xor_si128(c2, _mm_clmulepi64_si128(d, h1, 1));
- d2 = _mm_xor_si128(d2, d);
- c1 = _mm_xor_si128(c1, _mm_clmulepi64_si128(d2, h01, 1));
-
- if (++i == s)
- {
- d = _mm_shuffle_epi8(_mm_loadu_si128((const __m128i *)data), bswapMask);
- d = _mm_xor_si128(d, x);
- c0 = _mm_xor_si128(c0, _mm_clmulepi64_si128(d, h0, 0x10));
- c2 = _mm_xor_si128(c2, _mm_clmulepi64_si128(d, h1, 0x11));
- d = _mm_xor_si128(d, _mm_shuffle_epi32(d, _MM_SHUFFLE(1, 0, 3, 2)));
- c1 = _mm_xor_si128(c1, _mm_clmulepi64_si128(d, h01, 0x10));
- break;
- }
-
- d2 = _mm_shuffle_epi8(_mm_loadu_si128((const __m128i *)(data+(s-i)*16-8)), bswapMask);
- c0 = _mm_xor_si128(c0, _mm_clmulepi64_si128(d, h0, 0x10));
- c2 = _mm_xor_si128(c2, _mm_clmulepi64_si128(d2, h1, 0x10));
- d = _mm_xor_si128(d, d2);
- c1 = _mm_xor_si128(c1, _mm_clmulepi64_si128(d, h01, 0x10));
- }
- data += s*16;
- len -= s*16;
-
- c1 = _mm_xor_si128(_mm_xor_si128(c1, c0), c2);
- x = CLMUL_Reduce(c0, c1, c2, r);
- }
-
- _mm_store_si128((__m128i *)HashBuffer(), x);
- return len;
- }
-#endif
-
- typedef BlockGetAndPut<word64, NativeByteOrder> Block;
- word64 *hashBuffer = (word64 *)HashBuffer();
-
- switch (2*(m_buffer.size()>=64*1024)
-#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE)
- + HasSSE2()
-#endif
- )
- {
- case 0: // non-SSE2 and 2K tables
- {
- byte *table = MulTable();
- word64 x0 = hashBuffer[0], x1 = hashBuffer[1];
-
- do
- {
- word64 y0, y1, a0, a1, b0, b1, c0, c1, d0, d1;
- Block::Get(data)(y0)(y1);
- x0 ^= y0;
- x1 ^= y1;
-
- data += HASH_BLOCKSIZE;
- len -= HASH_BLOCKSIZE;
-
- #define READ_TABLE_WORD64_COMMON(a, b, c, d) *(word64 *)(table+(a*1024)+(b*256)+c+d*8)
-
- #ifdef IS_LITTLE_ENDIAN
- #if CRYPTOPP_BOOL_SLOW_WORD64
- word32 z0 = (word32)x0;
- word32 z1 = (word32)(x0>>32);
- word32 z2 = (word32)x1;
- word32 z3 = (word32)(x1>>32);
- #define READ_TABLE_WORD64(a, b, c, d, e) READ_TABLE_WORD64_COMMON((d%2), c, (d?(z##c>>((d?d-1:0)*4))&0xf0:(z##c&0xf)<<4), e)
- #else
- #define READ_TABLE_WORD64(a, b, c, d, e) READ_TABLE_WORD64_COMMON((d%2), c, ((d+8*b)?(x##a>>(((d+8*b)?(d+8*b)-1:1)*4))&0xf0:(x##a&0xf)<<4), e)
- #endif
- #define GF_MOST_SIG_8BITS(a) (a##1 >> 7*8)
- #define GF_SHIFT_8(a) a##1 = (a##1 << 8) ^ (a##0 >> 7*8); a##0 <<= 8;
- #else
- #define READ_TABLE_WORD64(a, b, c, d, e) READ_TABLE_WORD64_COMMON((1-d%2), c, ((15-d-8*b)?(x##a>>(((15-d-8*b)?(15-d-8*b)-1:0)*4))&0xf0:(x##a&0xf)<<4), e)
- #define GF_MOST_SIG_8BITS(a) (a##1 & 0xff)
- #define GF_SHIFT_8(a) a##1 = (a##1 >> 8) ^ (a##0 << 7*8); a##0 >>= 8;
- #endif
-
- #define GF_MUL_32BY128(op, a, b, c) \
- a0 op READ_TABLE_WORD64(a, b, c, 0, 0) ^ READ_TABLE_WORD64(a, b, c, 1, 0);\
- a1 op READ_TABLE_WORD64(a, b, c, 0, 1) ^ READ_TABLE_WORD64(a, b, c, 1, 1);\
- b0 op READ_TABLE_WORD64(a, b, c, 2, 0) ^ READ_TABLE_WORD64(a, b, c, 3, 0);\
- b1 op READ_TABLE_WORD64(a, b, c, 2, 1) ^ READ_TABLE_WORD64(a, b, c, 3, 1);\
- c0 op READ_TABLE_WORD64(a, b, c, 4, 0) ^ READ_TABLE_WORD64(a, b, c, 5, 0);\
- c1 op READ_TABLE_WORD64(a, b, c, 4, 1) ^ READ_TABLE_WORD64(a, b, c, 5, 1);\
- d0 op READ_TABLE_WORD64(a, b, c, 6, 0) ^ READ_TABLE_WORD64(a, b, c, 7, 0);\
- d1 op READ_TABLE_WORD64(a, b, c, 6, 1) ^ READ_TABLE_WORD64(a, b, c, 7, 1);\
-
- GF_MUL_32BY128(=, 0, 0, 0)
- GF_MUL_32BY128(^=, 0, 1, 1)
- GF_MUL_32BY128(^=, 1, 0, 2)
- GF_MUL_32BY128(^=, 1, 1, 3)
-
- word32 r = (word32)s_reductionTable[GF_MOST_SIG_8BITS(d)] << 16;
- GF_SHIFT_8(d)
- c0 ^= d0; c1 ^= d1;
- r ^= (word32)s_reductionTable[GF_MOST_SIG_8BITS(c)] << 8;
- GF_SHIFT_8(c)
- b0 ^= c0; b1 ^= c1;
- r ^= s_reductionTable[GF_MOST_SIG_8BITS(b)];
- GF_SHIFT_8(b)
- a0 ^= b0; a1 ^= b1;
- a0 ^= ConditionalByteReverse<word64>(LITTLE_ENDIAN_ORDER, r);
- x0 = a0; x1 = a1;
- }
- while (len >= HASH_BLOCKSIZE);
-
- hashBuffer[0] = x0; hashBuffer[1] = x1;
- return len;
- }
-
- case 2: // non-SSE2 and 64K tables
- {
- byte *table = MulTable();
- word64 x0 = hashBuffer[0], x1 = hashBuffer[1];
-
- do
- {
- word64 y0, y1, a0, a1;
- Block::Get(data)(y0)(y1);
- x0 ^= y0;
- x1 ^= y1;
-
- data += HASH_BLOCKSIZE;
- len -= HASH_BLOCKSIZE;
-
- #undef READ_TABLE_WORD64_COMMON
- #undef READ_TABLE_WORD64
-
- #define READ_TABLE_WORD64_COMMON(a, c, d) *(word64 *)(table+(a)*256*16+(c)+(d)*8)
-
- #ifdef IS_LITTLE_ENDIAN
- #if CRYPTOPP_BOOL_SLOW_WORD64
- word32 z0 = (word32)x0;
- word32 z1 = (word32)(x0>>32);
- word32 z2 = (word32)x1;
- word32 z3 = (word32)(x1>>32);
- #define READ_TABLE_WORD64(b, c, d, e) READ_TABLE_WORD64_COMMON(c*4+d, (d?(z##c>>((d?d:1)*8-4))&0xff0:(z##c&0xff)<<4), e)
- #else
- #define READ_TABLE_WORD64(b, c, d, e) READ_TABLE_WORD64_COMMON(c*4+d, ((d+4*(c%2))?(x##b>>(((d+4*(c%2))?(d+4*(c%2)):1)*8-4))&0xff0:(x##b&0xff)<<4), e)
- #endif
- #else
- #define READ_TABLE_WORD64(b, c, d, e) READ_TABLE_WORD64_COMMON(c*4+d, ((7-d-4*(c%2))?(x##b>>(((7-d-4*(c%2))?(7-d-4*(c%2)):1)*8-4))&0xff0:(x##b&0xff)<<4), e)
- #endif
-
- #define GF_MUL_8BY128(op, b, c, d) \
- a0 op READ_TABLE_WORD64(b, c, d, 0);\
- a1 op READ_TABLE_WORD64(b, c, d, 1);\
-
- GF_MUL_8BY128(=, 0, 0, 0)
- GF_MUL_8BY128(^=, 0, 0, 1)
- GF_MUL_8BY128(^=, 0, 0, 2)
- GF_MUL_8BY128(^=, 0, 0, 3)
- GF_MUL_8BY128(^=, 0, 1, 0)
- GF_MUL_8BY128(^=, 0, 1, 1)
- GF_MUL_8BY128(^=, 0, 1, 2)
- GF_MUL_8BY128(^=, 0, 1, 3)
- GF_MUL_8BY128(^=, 1, 2, 0)
- GF_MUL_8BY128(^=, 1, 2, 1)
- GF_MUL_8BY128(^=, 1, 2, 2)
- GF_MUL_8BY128(^=, 1, 2, 3)
- GF_MUL_8BY128(^=, 1, 3, 0)
- GF_MUL_8BY128(^=, 1, 3, 1)
- GF_MUL_8BY128(^=, 1, 3, 2)
- GF_MUL_8BY128(^=, 1, 3, 3)
-
- x0 = a0; x1 = a1;
- }
- while (len >= HASH_BLOCKSIZE);
-
- hashBuffer[0] = x0; hashBuffer[1] = x1;
- return len;
- }
-#endif // #ifndef CRYPTOPP_GENERATE_X64_MASM
-
-#ifdef CRYPTOPP_X64_MASM_AVAILABLE
- case 1: // SSE2 and 2K tables
- GCM_AuthenticateBlocks_2K(data, len/16, hashBuffer, s_reductionTable);
- return len % 16;
- case 3: // SSE2 and 64K tables
- GCM_AuthenticateBlocks_64K(data, len/16, hashBuffer);
- return len % 16;
-#endif
-
-#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
- case 1: // SSE2 and 2K tables
- {
- #ifdef __GNUC__
- __asm__ __volatile__
- (
- ".intel_syntax noprefix;"
- #elif defined(CRYPTOPP_GENERATE_X64_MASM)
- ALIGN 8
- GCM_AuthenticateBlocks_2K PROC FRAME
- rex_push_reg rsi
- push_reg rdi
- push_reg rbx
- .endprolog
- mov rsi, r8
- mov r11, r9
- #else
- AS2( mov WORD_REG(cx), data )
- AS2( mov WORD_REG(dx), len )
- AS2( mov WORD_REG(si), hashBuffer )
- AS2( shr WORD_REG(dx), 4 )
- #endif
-
- AS_PUSH_IF86( bx)
- AS_PUSH_IF86( bp)
-
- #ifdef __GNUC__
- AS2( mov AS_REG_7, WORD_REG(di))
- #elif CRYPTOPP_BOOL_X86
- AS2( lea AS_REG_7, s_reductionTable)
- #endif
-
- AS2( movdqa xmm0, [WORD_REG(si)] )
-
- #define MUL_TABLE_0 WORD_REG(si) + 32
- #define MUL_TABLE_1 WORD_REG(si) + 32 + 1024
- #define RED_TABLE AS_REG_7
-
- ASL(0)
- AS2( movdqu xmm4, [WORD_REG(cx)] )
- AS2( pxor xmm0, xmm4 )
-
- AS2( movd ebx, xmm0 )
- AS2( mov eax, AS_HEX(f0f0f0f0) )
- AS2( and eax, ebx )
- AS2( shl ebx, 4 )
- AS2( and ebx, AS_HEX(f0f0f0f0) )
- AS2( movzx edi, ah )
- AS2( movdqa xmm5, XMMWORD_PTR [MUL_TABLE_1 + WORD_REG(di)] )
- AS2( movzx edi, al )
- AS2( movdqa xmm4, XMMWORD_PTR [MUL_TABLE_1 + WORD_REG(di)] )
- AS2( shr eax, 16 )
- AS2( movzx edi, ah )
- AS2( movdqa xmm3, XMMWORD_PTR [MUL_TABLE_1 + WORD_REG(di)] )
- AS2( movzx edi, al )
- AS2( movdqa xmm2, XMMWORD_PTR [MUL_TABLE_1 + WORD_REG(di)] )
-
- #define SSE2_MUL_32BITS(i) \
- AS2( psrldq xmm0, 4 )\
- AS2( movd eax, xmm0 )\
- AS2( and eax, AS_HEX(f0f0f0f0) )\
- AS2( movzx edi, bh )\
- AS2( pxor xmm5, XMMWORD_PTR [MUL_TABLE_0 + (i-1)*256 + WORD_REG(di)] )\
- AS2( movzx edi, bl )\
- AS2( pxor xmm4, XMMWORD_PTR [MUL_TABLE_0 + (i-1)*256 + WORD_REG(di)] )\
- AS2( shr ebx, 16 )\
- AS2( movzx edi, bh )\
- AS2( pxor xmm3, XMMWORD_PTR [MUL_TABLE_0 + (i-1)*256 + WORD_REG(di)] )\
- AS2( movzx edi, bl )\
- AS2( pxor xmm2, XMMWORD_PTR [MUL_TABLE_0 + (i-1)*256 + WORD_REG(di)] )\
- AS2( movd ebx, xmm0 )\
- AS2( shl ebx, 4 )\
- AS2( and ebx, AS_HEX(f0f0f0f0) )\
- AS2( movzx edi, ah )\
- AS2( pxor xmm5, XMMWORD_PTR [MUL_TABLE_1 + i*256 + WORD_REG(di)] )\
- AS2( movzx edi, al )\
- AS2( pxor xmm4, XMMWORD_PTR [MUL_TABLE_1 + i*256 + WORD_REG(di)] )\
- AS2( shr eax, 16 )\
- AS2( movzx edi, ah )\
- AS2( pxor xmm3, XMMWORD_PTR [MUL_TABLE_1 + i*256 + WORD_REG(di)] )\
- AS2( movzx edi, al )\
- AS2( pxor xmm2, XMMWORD_PTR [MUL_TABLE_1 + i*256 + WORD_REG(di)] )\
-
- SSE2_MUL_32BITS(1)
- SSE2_MUL_32BITS(2)
- SSE2_MUL_32BITS(3)
-
- AS2( movzx edi, bh )
- AS2( pxor xmm5, XMMWORD_PTR [MUL_TABLE_0 + 3*256 + WORD_REG(di)] )
- AS2( movzx edi, bl )
- AS2( pxor xmm4, XMMWORD_PTR [MUL_TABLE_0 + 3*256 + WORD_REG(di)] )
- AS2( shr ebx, 16 )
- AS2( movzx edi, bh )
- AS2( pxor xmm3, XMMWORD_PTR [MUL_TABLE_0 + 3*256 + WORD_REG(di)] )
- AS2( movzx edi, bl )
- AS2( pxor xmm2, XMMWORD_PTR [MUL_TABLE_0 + 3*256 + WORD_REG(di)] )
-
- AS2( movdqa xmm0, xmm3 )
- AS2( pslldq xmm3, 1 )
- AS2( pxor xmm2, xmm3 )
- AS2( movdqa xmm1, xmm2 )
- AS2( pslldq xmm2, 1 )
- AS2( pxor xmm5, xmm2 )
-
- AS2( psrldq xmm0, 15 )
- AS2( movd WORD_REG(di), xmm0 )
- AS2( movzx eax, WORD PTR [RED_TABLE + WORD_REG(di)*2] )
- AS2( shl eax, 8 )
-
- AS2( movdqa xmm0, xmm5 )
- AS2( pslldq xmm5, 1 )
- AS2( pxor xmm4, xmm5 )
-
- AS2( psrldq xmm1, 15 )
- AS2( movd WORD_REG(di), xmm1 )
- AS2( xor ax, WORD PTR [RED_TABLE + WORD_REG(di)*2] )
- AS2( shl eax, 8 )
-
- AS2( psrldq xmm0, 15 )
- AS2( movd WORD_REG(di), xmm0 )
- AS2( xor ax, WORD PTR [RED_TABLE + WORD_REG(di)*2] )
-
- AS2( movd xmm0, eax )
- AS2( pxor xmm0, xmm4 )
-
- AS2( add WORD_REG(cx), 16 )
- AS2( sub WORD_REG(dx), 1 )
- ASJ( jnz, 0, b )
- AS2( movdqa [WORD_REG(si)], xmm0 )
-
- AS_POP_IF86( bp)
- AS_POP_IF86( bx)
-
- #ifdef __GNUC__
- ".att_syntax prefix;"
- :
- : "c" (data), "d" (len/16), "S" (hashBuffer), "D" (s_reductionTable)
- : "memory", "cc", "%eax"
- #if CRYPTOPP_BOOL_X64
- , "%ebx", "%r11"
- #endif
- );
- #elif defined(CRYPTOPP_GENERATE_X64_MASM)
- pop rbx
- pop rdi
- pop rsi
- ret
- GCM_AuthenticateBlocks_2K ENDP
- #endif
-
- return len%16;
- }
- case 3: // SSE2 and 64K tables
- {
- #ifdef __GNUC__
- __asm__ __volatile__
- (
- ".intel_syntax noprefix;"
- #elif defined(CRYPTOPP_GENERATE_X64_MASM)
- ALIGN 8
- GCM_AuthenticateBlocks_64K PROC FRAME
- rex_push_reg rsi
- push_reg rdi
- .endprolog
- mov rsi, r8
- #else
- AS2( mov WORD_REG(cx), data )
- AS2( mov WORD_REG(dx), len )
- AS2( mov WORD_REG(si), hashBuffer )
- AS2( shr WORD_REG(dx), 4 )
- #endif
-
- AS2( movdqa xmm0, [WORD_REG(si)] )
-
- #undef MUL_TABLE
- #define MUL_TABLE(i,j) WORD_REG(si) + 32 + (i*4+j)*256*16
-
- ASL(1)
- AS2( movdqu xmm1, [WORD_REG(cx)] )
- AS2( pxor xmm1, xmm0 )
- AS2( pxor xmm0, xmm0 )
-
- #undef SSE2_MUL_32BITS
- #define SSE2_MUL_32BITS(i) \
- AS2( movd eax, xmm1 )\
- AS2( psrldq xmm1, 4 )\
- AS2( movzx edi, al )\
- AS2( add WORD_REG(di), WORD_REG(di) )\
- AS2( pxor xmm0, [MUL_TABLE(i,0) + WORD_REG(di)*8] )\
- AS2( movzx edi, ah )\
- AS2( add WORD_REG(di), WORD_REG(di) )\
- AS2( pxor xmm0, [MUL_TABLE(i,1) + WORD_REG(di)*8] )\
- AS2( shr eax, 16 )\
- AS2( movzx edi, al )\
- AS2( add WORD_REG(di), WORD_REG(di) )\
- AS2( pxor xmm0, [MUL_TABLE(i,2) + WORD_REG(di)*8] )\
- AS2( movzx edi, ah )\
- AS2( add WORD_REG(di), WORD_REG(di) )\
- AS2( pxor xmm0, [MUL_TABLE(i,3) + WORD_REG(di)*8] )\
-
- SSE2_MUL_32BITS(0)
- SSE2_MUL_32BITS(1)
- SSE2_MUL_32BITS(2)
- SSE2_MUL_32BITS(3)
-
- AS2( add WORD_REG(cx), 16 )
- AS2( sub WORD_REG(dx), 1 )
- ASJ( jnz, 1, b )
- AS2( movdqa [WORD_REG(si)], xmm0 )
-
- #ifdef __GNUC__
- ".att_syntax prefix;"
- :
- : "c" (data), "d" (len/16), "S" (hashBuffer)
- : "memory", "cc", "%edi", "%eax"
- );
- #elif defined(CRYPTOPP_GENERATE_X64_MASM)
- pop rdi
- pop rsi
- ret
- GCM_AuthenticateBlocks_64K ENDP
- #endif
-
- return len%16;
- }
-#endif
-#ifndef CRYPTOPP_GENERATE_X64_MASM
- }
-
- return len%16;
-}
-
-void GCM_Base::AuthenticateLastHeaderBlock()
-{
- if (m_bufferedDataLength > 0)
- {
- memset(m_buffer+m_bufferedDataLength, 0, HASH_BLOCKSIZE-m_bufferedDataLength);
- m_bufferedDataLength = 0;
- GCM_Base::AuthenticateBlocks(m_buffer, HASH_BLOCKSIZE);
- }
-}
-
-void GCM_Base::AuthenticateLastConfidentialBlock()
-{
- GCM_Base::AuthenticateLastHeaderBlock();
- PutBlock<word64, BigEndian, true>(NULL, m_buffer)(m_totalHeaderLength*8)(m_totalMessageLength*8);
- GCM_Base::AuthenticateBlocks(m_buffer, HASH_BLOCKSIZE);
-}
-
-void GCM_Base::AuthenticateLastFooterBlock(byte *mac, size_t macSize)
-{
- m_ctr.Seek(0);
- ReverseHashBufferIfNeeded();
- m_ctr.ProcessData(mac, HashBuffer(), macSize);
-}
-
-NAMESPACE_END
-
-#endif // #ifndef CRYPTOPP_GENERATE_X64_MASM
-#endif
+// gcm.cpp - written and placed in the public domain by Wei Dai
+
+// use "cl /EP /P /DCRYPTOPP_GENERATE_X64_MASM gcm.cpp" to generate MASM code
+
+#include "pch.h"
+
+#ifndef CRYPTOPP_IMPORTS
+#ifndef CRYPTOPP_GENERATE_X64_MASM
+
+#include "gcm.h"
+#include "cpu.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+word16 GCM_Base::s_reductionTable[256];
+volatile bool GCM_Base::s_reductionTableInitialized = false;
+
+void GCM_Base::GCTR::IncrementCounterBy256()
+{
+ IncrementCounterByOne(m_counterArray+BlockSize()-4, 3);
+}
+
+#if 0
+// preserved for testing
+void gcm_gf_mult(const unsigned char *a, const unsigned char *b, unsigned char *c)
+{
+ word64 Z0=0, Z1=0, V0, V1;
+
+ typedef BlockGetAndPut<word64, BigEndian> Block;
+ Block::Get(a)(V0)(V1);
+
+ for (int i=0; i<16; i++)
+ {
+ for (int j=0x80; j!=0; j>>=1)
+ {
+ int x = b[i] & j;
+ Z0 ^= x ? V0 : 0;
+ Z1 ^= x ? V1 : 0;
+ x = (int)V1 & 1;
+ V1 = (V1>>1) | (V0<<63);
+ V0 = (V0>>1) ^ (x ? W64LIT(0xe1) << 56 : 0);
+ }
+ }
+ Block::Put(NULL, c)(Z0)(Z1);
+}
+
+__m128i _mm_clmulepi64_si128(const __m128i &a, const __m128i &b, int i)
+{
+ word64 A[1] = {ByteReverse(((word64*)&a)[i&1])};
+ word64 B[1] = {ByteReverse(((word64*)&b)[i>>4])};
+
+ PolynomialMod2 pa((byte *)A, 8);
+ PolynomialMod2 pb((byte *)B, 8);
+ PolynomialMod2 c = pa*pb;
+
+ __m128i output;
+ for (int i=0; i<16; i++)
+ ((byte *)&output)[i] = c.GetByte(i);
+ return output;
+}
+#endif
+
+#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE || CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
+inline static void SSE2_Xor16(byte *a, const byte *b, const byte *c)
+{
+#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE
+ *(__m128i *)a = _mm_xor_si128(*(__m128i *)b, *(__m128i *)c);
+#else
+ asm ("movdqa %1, %%xmm0; pxor %2, %%xmm0; movdqa %%xmm0, %0;" : "=m" (a[0]) : "m"(b[0]), "m"(c[0]));
+#endif
+}
+#endif
+
+inline static void Xor16(byte *a, const byte *b, const byte *c)
+{
+ ((word64 *)a)[0] = ((word64 *)b)[0] ^ ((word64 *)c)[0];
+ ((word64 *)a)[1] = ((word64 *)b)[1] ^ ((word64 *)c)[1];
+}
+
+#if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE
+static CRYPTOPP_ALIGN_DATA(16) const word64 s_clmulConstants64[] = {
+ W64LIT(0xe100000000000000), W64LIT(0xc200000000000000),
+ W64LIT(0x08090a0b0c0d0e0f), W64LIT(0x0001020304050607),
+ W64LIT(0x0001020304050607), W64LIT(0x08090a0b0c0d0e0f)};
+static const __m128i *s_clmulConstants = (const __m128i *)s_clmulConstants64;
+static const unsigned int s_clmulTableSizeInBlocks = 8;
+
+inline __m128i CLMUL_Reduce(__m128i c0, __m128i c1, __m128i c2, const __m128i &r)
+{
+ /*
+ The polynomial to be reduced is c0 * x^128 + c1 * x^64 + c2. c0t below refers to the most
+ significant half of c0 as a polynomial, which, due to GCM's bit reflection, are in the
+ rightmost bit positions, and the lowest byte addresses.
+
+ c1 ^= c0t * 0xc200000000000000
+ c2t ^= c0t
+ t = shift (c1t ^ c0b) left 1 bit
+ c2 ^= t * 0xe100000000000000
+ c2t ^= c1b
+ shift c2 left 1 bit and xor in lowest bit of c1t
+ */
+#if 0 // MSVC 2010 workaround: see http://connect.microsoft.com/VisualStudio/feedback/details/575301
+ c2 = _mm_xor_si128(c2, _mm_move_epi64(c0));
+#else
+ c1 = _mm_xor_si128(c1, _mm_slli_si128(c0, 8));
+#endif
+ c1 = _mm_xor_si128(c1, _mm_clmulepi64_si128(c0, r, 0x10));
+ c0 = _mm_srli_si128(c0, 8);
+ c0 = _mm_xor_si128(c0, c1);
+ c0 = _mm_slli_epi64(c0, 1);
+ c0 = _mm_clmulepi64_si128(c0, r, 0);
+ c2 = _mm_xor_si128(c2, c0);
+ c2 = _mm_xor_si128(c2, _mm_srli_si128(c1, 8));
+ c1 = _mm_unpacklo_epi64(c1, c2);
+ c1 = _mm_srli_epi64(c1, 63);
+ c2 = _mm_slli_epi64(c2, 1);
+ return _mm_xor_si128(c2, c1);
+}
+
+inline __m128i CLMUL_GF_Mul(const __m128i &x, const __m128i &h, const __m128i &r)
+{
+ __m128i c0 = _mm_clmulepi64_si128(x,h,0);
+ __m128i c1 = _mm_xor_si128(_mm_clmulepi64_si128(x,h,1), _mm_clmulepi64_si128(x,h,0x10));
+ __m128i c2 = _mm_clmulepi64_si128(x,h,0x11);
+
+ return CLMUL_Reduce(c0, c1, c2, r);
+}
+#endif
+
+void GCM_Base::SetKeyWithoutResync(const byte *userKey, size_t keylength, const NameValuePairs &params)
+{
+ BlockCipher &blockCipher = AccessBlockCipher();
+ blockCipher.SetKey(userKey, keylength, params);
+
+ if (blockCipher.BlockSize() != REQUIRED_BLOCKSIZE)
+ throw InvalidArgument(AlgorithmName() + ": block size of underlying block cipher is not 16");
+
+ int tableSize, i, j, k;
+
+#if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE
+ if (HasCLMUL())
+ {
+ params.GetIntValue(Name::TableSize(), tableSize); // avoid "parameter not used" error
+ tableSize = s_clmulTableSizeInBlocks * REQUIRED_BLOCKSIZE;
+ }
+ else
+#endif
+ {
+ if (params.GetIntValue(Name::TableSize(), tableSize))
+ tableSize = (tableSize >= 64*1024) ? 64*1024 : 2*1024;
+ else
+ tableSize = (GetTablesOption() == GCM_64K_Tables) ? 64*1024 : 2*1024;
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1300 && _MSC_VER < 1400)
+ // VC 2003 workaround: compiler generates bad code for 64K tables
+ tableSize = 2*1024;
+#endif
+ }
+
+ m_buffer.resize(3*REQUIRED_BLOCKSIZE + tableSize);
+ byte *table = MulTable();
+ byte *hashKey = HashKey();
+ memset(hashKey, 0, REQUIRED_BLOCKSIZE);
+ blockCipher.ProcessBlock(hashKey);
+
+#if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE
+ if (HasCLMUL())
+ {
+ const __m128i r = s_clmulConstants[0];
+ __m128i h0 = _mm_shuffle_epi8(_mm_load_si128((__m128i *)hashKey), s_clmulConstants[1]);
+ __m128i h = h0;
+
+ for (i=0; i<tableSize; i+=32)
+ {
+ __m128i h1 = CLMUL_GF_Mul(h, h0, r);
+ _mm_storel_epi64((__m128i *)(table+i), h);
+ _mm_storeu_si128((__m128i *)(table+i+16), h1);
+ _mm_storeu_si128((__m128i *)(table+i+8), h);
+ _mm_storel_epi64((__m128i *)(table+i+8), h1);
+ h = CLMUL_GF_Mul(h1, h0, r);
+ }
+
+ return;
+ }
+#endif
+
+ word64 V0, V1;
+ typedef BlockGetAndPut<word64, BigEndian> Block;
+ Block::Get(hashKey)(V0)(V1);
+
+ if (tableSize == 64*1024)
+ {
+ for (i=0; i<128; i++)
+ {
+ k = i%8;
+ Block::Put(NULL, table+(i/8)*256*16+(size_t(1)<<(11-k)))(V0)(V1);
+
+ int x = (int)V1 & 1;
+ V1 = (V1>>1) | (V0<<63);
+ V0 = (V0>>1) ^ (x ? W64LIT(0xe1) << 56 : 0);
+ }
+
+ for (i=0; i<16; i++)
+ {
+ memset(table+i*256*16, 0, 16);
+#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE || CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
+ if (HasSSE2())
+ for (j=2; j<=0x80; j*=2)
+ for (k=1; k<j; k++)
+ SSE2_Xor16(table+i*256*16+(j+k)*16, table+i*256*16+j*16, table+i*256*16+k*16);
+ else
+#endif
+ for (j=2; j<=0x80; j*=2)
+ for (k=1; k<j; k++)
+ Xor16(table+i*256*16+(j+k)*16, table+i*256*16+j*16, table+i*256*16+k*16);
+ }
+ }
+ else
+ {
+ if (!s_reductionTableInitialized)
+ {
+ s_reductionTable[0] = 0;
+ word16 x = 0x01c2;
+ s_reductionTable[1] = ByteReverse(x);
+ for (int i=2; i<=0x80; i*=2)
+ {
+ x <<= 1;
+ s_reductionTable[i] = ByteReverse(x);
+ for (int j=1; j<i; j++)
+ s_reductionTable[i+j] = s_reductionTable[i] ^ s_reductionTable[j];
+ }
+ s_reductionTableInitialized = true;
+ }
+
+ for (i=0; i<128-24; i++)
+ {
+ k = i%32;
+ if (k < 4)
+ Block::Put(NULL, table+1024+(i/32)*256+(size_t(1)<<(7-k)))(V0)(V1);
+ else if (k < 8)
+ Block::Put(NULL, table+(i/32)*256+(size_t(1)<<(11-k)))(V0)(V1);
+
+ int x = (int)V1 & 1;
+ V1 = (V1>>1) | (V0<<63);
+ V0 = (V0>>1) ^ (x ? W64LIT(0xe1) << 56 : 0);
+ }
+
+ for (i=0; i<4; i++)
+ {
+ memset(table+i*256, 0, 16);
+ memset(table+1024+i*256, 0, 16);
+#if CRYPTOPP_BOOL_SSE2_INTRINSICS_AVAILABLE || CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
+ if (HasSSE2())
+ for (j=2; j<=8; j*=2)
+ for (k=1; k<j; k++)
+ {
+ SSE2_Xor16(table+i*256+(j+k)*16, table+i*256+j*16, table+i*256+k*16);
+ SSE2_Xor16(table+1024+i*256+(j+k)*16, table+1024+i*256+j*16, table+1024+i*256+k*16);
+ }
+ else
+#endif
+ for (j=2; j<=8; j*=2)
+ for (k=1; k<j; k++)
+ {
+ Xor16(table+i*256+(j+k)*16, table+i*256+j*16, table+i*256+k*16);
+ Xor16(table+1024+i*256+(j+k)*16, table+1024+i*256+j*16, table+1024+i*256+k*16);
+ }
+ }
+ }
+}
+
+inline void GCM_Base::ReverseHashBufferIfNeeded()
+{
+#if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE
+ if (HasCLMUL())
+ {
+ __m128i &x = *(__m128i *)HashBuffer();
+ x = _mm_shuffle_epi8(x, s_clmulConstants[1]);
+ }
+#endif
+}
+
+void GCM_Base::Resync(const byte *iv, size_t len)
+{
+ BlockCipher &cipher = AccessBlockCipher();
+ byte *hashBuffer = HashBuffer();
+
+ if (len == 12)
+ {
+ memcpy(hashBuffer, iv, len);
+ memset(hashBuffer+len, 0, 3);
+ hashBuffer[len+3] = 1;
+ }
+ else
+ {
+ size_t origLen = len;
+ memset(hashBuffer, 0, HASH_BLOCKSIZE);
+
+ if (len >= HASH_BLOCKSIZE)
+ {
+ len = GCM_Base::AuthenticateBlocks(iv, len);
+ iv += (origLen - len);
+ }
+
+ if (len > 0)
+ {
+ memcpy(m_buffer, iv, len);
+ memset(m_buffer+len, 0, HASH_BLOCKSIZE-len);
+ GCM_Base::AuthenticateBlocks(m_buffer, HASH_BLOCKSIZE);
+ }
+
+ PutBlock<word64, BigEndian, true>(NULL, m_buffer)(0)(origLen*8);
+ GCM_Base::AuthenticateBlocks(m_buffer, HASH_BLOCKSIZE);
+
+ ReverseHashBufferIfNeeded();
+ }
+
+ if (m_state >= State_IVSet)
+ m_ctr.Resynchronize(hashBuffer, REQUIRED_BLOCKSIZE);
+ else
+ m_ctr.SetCipherWithIV(cipher, hashBuffer);
+
+ m_ctr.Seek(HASH_BLOCKSIZE);
+
+ memset(hashBuffer, 0, HASH_BLOCKSIZE);
+}
+
+unsigned int GCM_Base::OptimalDataAlignment() const
+{
+ return
+#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE)
+ HasSSE2() ? 16 :
+#endif
+ GetBlockCipher().OptimalDataAlignment();
+}
+
+#pragma warning(disable: 4731) // frame pointer register 'ebp' modified by inline assembly code
+
+#endif // #ifndef CRYPTOPP_GENERATE_X64_MASM
+
+#ifdef CRYPTOPP_X64_MASM_AVAILABLE
+extern "C" {
+void GCM_AuthenticateBlocks_2K(const byte *data, size_t blocks, word64 *hashBuffer, const word16 *reductionTable);
+void GCM_AuthenticateBlocks_64K(const byte *data, size_t blocks, word64 *hashBuffer);
+}
+#endif
+
+#ifndef CRYPTOPP_GENERATE_X64_MASM
+
+size_t GCM_Base::AuthenticateBlocks(const byte *data, size_t len)
+{
+#if CRYPTOPP_BOOL_AESNI_INTRINSICS_AVAILABLE
+ if (HasCLMUL())
+ {
+ const __m128i *table = (const __m128i *)MulTable();
+ __m128i x = _mm_load_si128((__m128i *)HashBuffer());
+ const __m128i r = s_clmulConstants[0], bswapMask = s_clmulConstants[1], bswapMask2 = s_clmulConstants[2];
+
+ while (len >= 16)
+ {
+ size_t s = UnsignedMin(len/16, s_clmulTableSizeInBlocks), i=0;
+ __m128i d, d2 = _mm_shuffle_epi8(_mm_loadu_si128((const __m128i *)(data+(s-1)*16)), bswapMask2);;
+ __m128i c0 = _mm_setzero_si128();
+ __m128i c1 = _mm_setzero_si128();
+ __m128i c2 = _mm_setzero_si128();
+
+ while (true)
+ {
+ __m128i h0 = _mm_load_si128(table+i);
+ __m128i h1 = _mm_load_si128(table+i+1);
+ __m128i h01 = _mm_xor_si128(h0, h1);
+
+ if (++i == s)
+ {
+ d = _mm_shuffle_epi8(_mm_loadu_si128((const __m128i *)data), bswapMask);
+ d = _mm_xor_si128(d, x);
+ c0 = _mm_xor_si128(c0, _mm_clmulepi64_si128(d, h0, 0));
+ c2 = _mm_xor_si128(c2, _mm_clmulepi64_si128(d, h1, 1));
+ d = _mm_xor_si128(d, _mm_shuffle_epi32(d, _MM_SHUFFLE(1, 0, 3, 2)));
+ c1 = _mm_xor_si128(c1, _mm_clmulepi64_si128(d, h01, 0));
+ break;
+ }
+
+ d = _mm_shuffle_epi8(_mm_loadu_si128((const __m128i *)(data+(s-i)*16-8)), bswapMask2);
+ c0 = _mm_xor_si128(c0, _mm_clmulepi64_si128(d2, h0, 1));
+ c2 = _mm_xor_si128(c2, _mm_clmulepi64_si128(d, h1, 1));
+ d2 = _mm_xor_si128(d2, d);
+ c1 = _mm_xor_si128(c1, _mm_clmulepi64_si128(d2, h01, 1));
+
+ if (++i == s)
+ {
+ d = _mm_shuffle_epi8(_mm_loadu_si128((const __m128i *)data), bswapMask);
+ d = _mm_xor_si128(d, x);
+ c0 = _mm_xor_si128(c0, _mm_clmulepi64_si128(d, h0, 0x10));
+ c2 = _mm_xor_si128(c2, _mm_clmulepi64_si128(d, h1, 0x11));
+ d = _mm_xor_si128(d, _mm_shuffle_epi32(d, _MM_SHUFFLE(1, 0, 3, 2)));
+ c1 = _mm_xor_si128(c1, _mm_clmulepi64_si128(d, h01, 0x10));
+ break;
+ }
+
+ d2 = _mm_shuffle_epi8(_mm_loadu_si128((const __m128i *)(data+(s-i)*16-8)), bswapMask);
+ c0 = _mm_xor_si128(c0, _mm_clmulepi64_si128(d, h0, 0x10));
+ c2 = _mm_xor_si128(c2, _mm_clmulepi64_si128(d2, h1, 0x10));
+ d = _mm_xor_si128(d, d2);
+ c1 = _mm_xor_si128(c1, _mm_clmulepi64_si128(d, h01, 0x10));
+ }
+ data += s*16;
+ len -= s*16;
+
+ c1 = _mm_xor_si128(_mm_xor_si128(c1, c0), c2);
+ x = CLMUL_Reduce(c0, c1, c2, r);
+ }
+
+ _mm_store_si128((__m128i *)HashBuffer(), x);
+ return len;
+ }
+#endif
+
+ typedef BlockGetAndPut<word64, NativeByteOrder> Block;
+ word64 *hashBuffer = (word64 *)HashBuffer();
+
+ switch (2*(m_buffer.size()>=64*1024)
+#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE)
+ + HasSSE2()
+#endif
+ )
+ {
+ case 0: // non-SSE2 and 2K tables
+ {
+ byte *table = MulTable();
+ word64 x0 = hashBuffer[0], x1 = hashBuffer[1];
+
+ do
+ {
+ word64 y0, y1, a0, a1, b0, b1, c0, c1, d0, d1;
+ Block::Get(data)(y0)(y1);
+ x0 ^= y0;
+ x1 ^= y1;
+
+ data += HASH_BLOCKSIZE;
+ len -= HASH_BLOCKSIZE;
+
+ #define READ_TABLE_WORD64_COMMON(a, b, c, d) *(word64 *)(table+(a*1024)+(b*256)+c+d*8)
+
+ #ifdef IS_LITTLE_ENDIAN
+ #if CRYPTOPP_BOOL_SLOW_WORD64
+ word32 z0 = (word32)x0;
+ word32 z1 = (word32)(x0>>32);
+ word32 z2 = (word32)x1;
+ word32 z3 = (word32)(x1>>32);
+ #define READ_TABLE_WORD64(a, b, c, d, e) READ_TABLE_WORD64_COMMON((d%2), c, (d?(z##c>>((d?d-1:0)*4))&0xf0:(z##c&0xf)<<4), e)
+ #else
+ #define READ_TABLE_WORD64(a, b, c, d, e) READ_TABLE_WORD64_COMMON((d%2), c, ((d+8*b)?(x##a>>(((d+8*b)?(d+8*b)-1:1)*4))&0xf0:(x##a&0xf)<<4), e)
+ #endif
+ #define GF_MOST_SIG_8BITS(a) (a##1 >> 7*8)
+ #define GF_SHIFT_8(a) a##1 = (a##1 << 8) ^ (a##0 >> 7*8); a##0 <<= 8;
+ #else
+ #define READ_TABLE_WORD64(a, b, c, d, e) READ_TABLE_WORD64_COMMON((1-d%2), c, ((15-d-8*b)?(x##a>>(((15-d-8*b)?(15-d-8*b)-1:0)*4))&0xf0:(x##a&0xf)<<4), e)
+ #define GF_MOST_SIG_8BITS(a) (a##1 & 0xff)
+ #define GF_SHIFT_8(a) a##1 = (a##1 >> 8) ^ (a##0 << 7*8); a##0 >>= 8;
+ #endif
+
+ #define GF_MUL_32BY128(op, a, b, c) \
+ a0 op READ_TABLE_WORD64(a, b, c, 0, 0) ^ READ_TABLE_WORD64(a, b, c, 1, 0);\
+ a1 op READ_TABLE_WORD64(a, b, c, 0, 1) ^ READ_TABLE_WORD64(a, b, c, 1, 1);\
+ b0 op READ_TABLE_WORD64(a, b, c, 2, 0) ^ READ_TABLE_WORD64(a, b, c, 3, 0);\
+ b1 op READ_TABLE_WORD64(a, b, c, 2, 1) ^ READ_TABLE_WORD64(a, b, c, 3, 1);\
+ c0 op READ_TABLE_WORD64(a, b, c, 4, 0) ^ READ_TABLE_WORD64(a, b, c, 5, 0);\
+ c1 op READ_TABLE_WORD64(a, b, c, 4, 1) ^ READ_TABLE_WORD64(a, b, c, 5, 1);\
+ d0 op READ_TABLE_WORD64(a, b, c, 6, 0) ^ READ_TABLE_WORD64(a, b, c, 7, 0);\
+ d1 op READ_TABLE_WORD64(a, b, c, 6, 1) ^ READ_TABLE_WORD64(a, b, c, 7, 1);\
+
+ GF_MUL_32BY128(=, 0, 0, 0)
+ GF_MUL_32BY128(^=, 0, 1, 1)
+ GF_MUL_32BY128(^=, 1, 0, 2)
+ GF_MUL_32BY128(^=, 1, 1, 3)
+
+ word32 r = (word32)s_reductionTable[GF_MOST_SIG_8BITS(d)] << 16;
+ GF_SHIFT_8(d)
+ c0 ^= d0; c1 ^= d1;
+ r ^= (word32)s_reductionTable[GF_MOST_SIG_8BITS(c)] << 8;
+ GF_SHIFT_8(c)
+ b0 ^= c0; b1 ^= c1;
+ r ^= s_reductionTable[GF_MOST_SIG_8BITS(b)];
+ GF_SHIFT_8(b)
+ a0 ^= b0; a1 ^= b1;
+ a0 ^= ConditionalByteReverse<word64>(LITTLE_ENDIAN_ORDER, r);
+ x0 = a0; x1 = a1;
+ }
+ while (len >= HASH_BLOCKSIZE);
+
+ hashBuffer[0] = x0; hashBuffer[1] = x1;
+ return len;
+ }
+
+ case 2: // non-SSE2 and 64K tables
+ {
+ byte *table = MulTable();
+ word64 x0 = hashBuffer[0], x1 = hashBuffer[1];
+
+ do
+ {
+ word64 y0, y1, a0, a1;
+ Block::Get(data)(y0)(y1);
+ x0 ^= y0;
+ x1 ^= y1;
+
+ data += HASH_BLOCKSIZE;
+ len -= HASH_BLOCKSIZE;
+
+ #undef READ_TABLE_WORD64_COMMON
+ #undef READ_TABLE_WORD64
+
+ #define READ_TABLE_WORD64_COMMON(a, c, d) *(word64 *)(table+(a)*256*16+(c)+(d)*8)
+
+ #ifdef IS_LITTLE_ENDIAN
+ #if CRYPTOPP_BOOL_SLOW_WORD64
+ word32 z0 = (word32)x0;
+ word32 z1 = (word32)(x0>>32);
+ word32 z2 = (word32)x1;
+ word32 z3 = (word32)(x1>>32);
+ #define READ_TABLE_WORD64(b, c, d, e) READ_TABLE_WORD64_COMMON(c*4+d, (d?(z##c>>((d?d:1)*8-4))&0xff0:(z##c&0xff)<<4), e)
+ #else
+ #define READ_TABLE_WORD64(b, c, d, e) READ_TABLE_WORD64_COMMON(c*4+d, ((d+4*(c%2))?(x##b>>(((d+4*(c%2))?(d+4*(c%2)):1)*8-4))&0xff0:(x##b&0xff)<<4), e)
+ #endif
+ #else
+ #define READ_TABLE_WORD64(b, c, d, e) READ_TABLE_WORD64_COMMON(c*4+d, ((7-d-4*(c%2))?(x##b>>(((7-d-4*(c%2))?(7-d-4*(c%2)):1)*8-4))&0xff0:(x##b&0xff)<<4), e)
+ #endif
+
+ #define GF_MUL_8BY128(op, b, c, d) \
+ a0 op READ_TABLE_WORD64(b, c, d, 0);\
+ a1 op READ_TABLE_WORD64(b, c, d, 1);\
+
+ GF_MUL_8BY128(=, 0, 0, 0)
+ GF_MUL_8BY128(^=, 0, 0, 1)
+ GF_MUL_8BY128(^=, 0, 0, 2)
+ GF_MUL_8BY128(^=, 0, 0, 3)
+ GF_MUL_8BY128(^=, 0, 1, 0)
+ GF_MUL_8BY128(^=, 0, 1, 1)
+ GF_MUL_8BY128(^=, 0, 1, 2)
+ GF_MUL_8BY128(^=, 0, 1, 3)
+ GF_MUL_8BY128(^=, 1, 2, 0)
+ GF_MUL_8BY128(^=, 1, 2, 1)
+ GF_MUL_8BY128(^=, 1, 2, 2)
+ GF_MUL_8BY128(^=, 1, 2, 3)
+ GF_MUL_8BY128(^=, 1, 3, 0)
+ GF_MUL_8BY128(^=, 1, 3, 1)
+ GF_MUL_8BY128(^=, 1, 3, 2)
+ GF_MUL_8BY128(^=, 1, 3, 3)
+
+ x0 = a0; x1 = a1;
+ }
+ while (len >= HASH_BLOCKSIZE);
+
+ hashBuffer[0] = x0; hashBuffer[1] = x1;
+ return len;
+ }
+#endif // #ifndef CRYPTOPP_GENERATE_X64_MASM
+
+#ifdef CRYPTOPP_X64_MASM_AVAILABLE
+ case 1: // SSE2 and 2K tables
+ GCM_AuthenticateBlocks_2K(data, len/16, hashBuffer, s_reductionTable);
+ return len % 16;
+ case 3: // SSE2 and 64K tables
+ GCM_AuthenticateBlocks_64K(data, len/16, hashBuffer);
+ return len % 16;
+#endif
+
+#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE
+ case 1: // SSE2 and 2K tables
+ {
+ #ifdef __GNUC__
+ __asm__ __volatile__
+ (
+ ".intel_syntax noprefix;"
+ #elif defined(CRYPTOPP_GENERATE_X64_MASM)
+ ALIGN 8
+ GCM_AuthenticateBlocks_2K PROC FRAME
+ rex_push_reg rsi
+ push_reg rdi
+ push_reg rbx
+ .endprolog
+ mov rsi, r8
+ mov r11, r9
+ #else
+ AS2( mov WORD_REG(cx), data )
+ AS2( mov WORD_REG(dx), len )
+ AS2( mov WORD_REG(si), hashBuffer )
+ AS2( shr WORD_REG(dx), 4 )
+ #endif
+
+ AS_PUSH_IF86( bx)
+ AS_PUSH_IF86( bp)
+
+ #ifdef __GNUC__
+ AS2( mov AS_REG_7, WORD_REG(di))
+ #elif CRYPTOPP_BOOL_X86
+ AS2( lea AS_REG_7, s_reductionTable)
+ #endif
+
+ AS2( movdqa xmm0, [WORD_REG(si)] )
+
+ #define MUL_TABLE_0 WORD_REG(si) + 32
+ #define MUL_TABLE_1 WORD_REG(si) + 32 + 1024
+ #define RED_TABLE AS_REG_7
+
+ ASL(0)
+ AS2( movdqu xmm4, [WORD_REG(cx)] )
+ AS2( pxor xmm0, xmm4 )
+
+ AS2( movd ebx, xmm0 )
+ AS2( mov eax, AS_HEX(f0f0f0f0) )
+ AS2( and eax, ebx )
+ AS2( shl ebx, 4 )
+ AS2( and ebx, AS_HEX(f0f0f0f0) )
+ AS2( movzx edi, ah )
+ AS2( movdqa xmm5, XMMWORD_PTR [MUL_TABLE_1 + WORD_REG(di)] )
+ AS2( movzx edi, al )
+ AS2( movdqa xmm4, XMMWORD_PTR [MUL_TABLE_1 + WORD_REG(di)] )
+ AS2( shr eax, 16 )
+ AS2( movzx edi, ah )
+ AS2( movdqa xmm3, XMMWORD_PTR [MUL_TABLE_1 + WORD_REG(di)] )
+ AS2( movzx edi, al )
+ AS2( movdqa xmm2, XMMWORD_PTR [MUL_TABLE_1 + WORD_REG(di)] )
+
+ #define SSE2_MUL_32BITS(i) \
+ AS2( psrldq xmm0, 4 )\
+ AS2( movd eax, xmm0 )\
+ AS2( and eax, AS_HEX(f0f0f0f0) )\
+ AS2( movzx edi, bh )\
+ AS2( pxor xmm5, XMMWORD_PTR [MUL_TABLE_0 + (i-1)*256 + WORD_REG(di)] )\
+ AS2( movzx edi, bl )\
+ AS2( pxor xmm4, XMMWORD_PTR [MUL_TABLE_0 + (i-1)*256 + WORD_REG(di)] )\
+ AS2( shr ebx, 16 )\
+ AS2( movzx edi, bh )\
+ AS2( pxor xmm3, XMMWORD_PTR [MUL_TABLE_0 + (i-1)*256 + WORD_REG(di)] )\
+ AS2( movzx edi, bl )\
+ AS2( pxor xmm2, XMMWORD_PTR [MUL_TABLE_0 + (i-1)*256 + WORD_REG(di)] )\
+ AS2( movd ebx, xmm0 )\
+ AS2( shl ebx, 4 )\
+ AS2( and ebx, AS_HEX(f0f0f0f0) )\
+ AS2( movzx edi, ah )\
+ AS2( pxor xmm5, XMMWORD_PTR [MUL_TABLE_1 + i*256 + WORD_REG(di)] )\
+ AS2( movzx edi, al )\
+ AS2( pxor xmm4, XMMWORD_PTR [MUL_TABLE_1 + i*256 + WORD_REG(di)] )\
+ AS2( shr eax, 16 )\
+ AS2( movzx edi, ah )\
+ AS2( pxor xmm3, XMMWORD_PTR [MUL_TABLE_1 + i*256 + WORD_REG(di)] )\
+ AS2( movzx edi, al )\
+ AS2( pxor xmm2, XMMWORD_PTR [MUL_TABLE_1 + i*256 + WORD_REG(di)] )\
+
+ SSE2_MUL_32BITS(1)
+ SSE2_MUL_32BITS(2)
+ SSE2_MUL_32BITS(3)
+
+ AS2( movzx edi, bh )
+ AS2( pxor xmm5, XMMWORD_PTR [MUL_TABLE_0 + 3*256 + WORD_REG(di)] )
+ AS2( movzx edi, bl )
+ AS2( pxor xmm4, XMMWORD_PTR [MUL_TABLE_0 + 3*256 + WORD_REG(di)] )
+ AS2( shr ebx, 16 )
+ AS2( movzx edi, bh )
+ AS2( pxor xmm3, XMMWORD_PTR [MUL_TABLE_0 + 3*256 + WORD_REG(di)] )
+ AS2( movzx edi, bl )
+ AS2( pxor xmm2, XMMWORD_PTR [MUL_TABLE_0 + 3*256 + WORD_REG(di)] )
+
+ AS2( movdqa xmm0, xmm3 )
+ AS2( pslldq xmm3, 1 )
+ AS2( pxor xmm2, xmm3 )
+ AS2( movdqa xmm1, xmm2 )
+ AS2( pslldq xmm2, 1 )
+ AS2( pxor xmm5, xmm2 )
+
+ AS2( psrldq xmm0, 15 )
+ AS2( movd WORD_REG(di), xmm0 )
+ AS2( movzx eax, WORD PTR [RED_TABLE + WORD_REG(di)*2] )
+ AS2( shl eax, 8 )
+
+ AS2( movdqa xmm0, xmm5 )
+ AS2( pslldq xmm5, 1 )
+ AS2( pxor xmm4, xmm5 )
+
+ AS2( psrldq xmm1, 15 )
+ AS2( movd WORD_REG(di), xmm1 )
+ AS2( xor ax, WORD PTR [RED_TABLE + WORD_REG(di)*2] )
+ AS2( shl eax, 8 )
+
+ AS2( psrldq xmm0, 15 )
+ AS2( movd WORD_REG(di), xmm0 )
+ AS2( xor ax, WORD PTR [RED_TABLE + WORD_REG(di)*2] )
+
+ AS2( movd xmm0, eax )
+ AS2( pxor xmm0, xmm4 )
+
+ AS2( add WORD_REG(cx), 16 )
+ AS2( sub WORD_REG(dx), 1 )
+ ASJ( jnz, 0, b )
+ AS2( movdqa [WORD_REG(si)], xmm0 )
+
+ AS_POP_IF86( bp)
+ AS_POP_IF86( bx)
+
+ #ifdef __GNUC__
+ ".att_syntax prefix;"
+ :
+ : "c" (data), "d" (len/16), "S" (hashBuffer), "D" (s_reductionTable)
+ : "memory", "cc", "%eax"
+ #if CRYPTOPP_BOOL_X64
+ , "%ebx", "%r11"
+ #endif
+ );
+ #elif defined(CRYPTOPP_GENERATE_X64_MASM)
+ pop rbx
+ pop rdi
+ pop rsi
+ ret
+ GCM_AuthenticateBlocks_2K ENDP
+ #endif
+
+ return len%16;
+ }
+ case 3: // SSE2 and 64K tables
+ {
+ #ifdef __GNUC__
+ __asm__ __volatile__
+ (
+ ".intel_syntax noprefix;"
+ #elif defined(CRYPTOPP_GENERATE_X64_MASM)
+ ALIGN 8
+ GCM_AuthenticateBlocks_64K PROC FRAME
+ rex_push_reg rsi
+ push_reg rdi
+ .endprolog
+ mov rsi, r8
+ #else
+ AS2( mov WORD_REG(cx), data )
+ AS2( mov WORD_REG(dx), len )
+ AS2( mov WORD_REG(si), hashBuffer )
+ AS2( shr WORD_REG(dx), 4 )
+ #endif
+
+ AS2( movdqa xmm0, [WORD_REG(si)] )
+
+ #undef MUL_TABLE
+ #define MUL_TABLE(i,j) WORD_REG(si) + 32 + (i*4+j)*256*16
+
+ ASL(1)
+ AS2( movdqu xmm1, [WORD_REG(cx)] )
+ AS2( pxor xmm1, xmm0 )
+ AS2( pxor xmm0, xmm0 )
+
+ #undef SSE2_MUL_32BITS
+ #define SSE2_MUL_32BITS(i) \
+ AS2( movd eax, xmm1 )\
+ AS2( psrldq xmm1, 4 )\
+ AS2( movzx edi, al )\
+ AS2( add WORD_REG(di), WORD_REG(di) )\
+ AS2( pxor xmm0, [MUL_TABLE(i,0) + WORD_REG(di)*8] )\
+ AS2( movzx edi, ah )\
+ AS2( add WORD_REG(di), WORD_REG(di) )\
+ AS2( pxor xmm0, [MUL_TABLE(i,1) + WORD_REG(di)*8] )\
+ AS2( shr eax, 16 )\
+ AS2( movzx edi, al )\
+ AS2( add WORD_REG(di), WORD_REG(di) )\
+ AS2( pxor xmm0, [MUL_TABLE(i,2) + WORD_REG(di)*8] )\
+ AS2( movzx edi, ah )\
+ AS2( add WORD_REG(di), WORD_REG(di) )\
+ AS2( pxor xmm0, [MUL_TABLE(i,3) + WORD_REG(di)*8] )\
+
+ SSE2_MUL_32BITS(0)
+ SSE2_MUL_32BITS(1)
+ SSE2_MUL_32BITS(2)
+ SSE2_MUL_32BITS(3)
+
+ AS2( add WORD_REG(cx), 16 )
+ AS2( sub WORD_REG(dx), 1 )
+ ASJ( jnz, 1, b )
+ AS2( movdqa [WORD_REG(si)], xmm0 )
+
+ #ifdef __GNUC__
+ ".att_syntax prefix;"
+ :
+ : "c" (data), "d" (len/16), "S" (hashBuffer)
+ : "memory", "cc", "%edi", "%eax"
+ );
+ #elif defined(CRYPTOPP_GENERATE_X64_MASM)
+ pop rdi
+ pop rsi
+ ret
+ GCM_AuthenticateBlocks_64K ENDP
+ #endif
+
+ return len%16;
+ }
+#endif
+#ifndef CRYPTOPP_GENERATE_X64_MASM
+ }
+
+ return len%16;
+}
+
+void GCM_Base::AuthenticateLastHeaderBlock()
+{
+ if (m_bufferedDataLength > 0)
+ {
+ memset(m_buffer+m_bufferedDataLength, 0, HASH_BLOCKSIZE-m_bufferedDataLength);
+ m_bufferedDataLength = 0;
+ GCM_Base::AuthenticateBlocks(m_buffer, HASH_BLOCKSIZE);
+ }
+}
+
+void GCM_Base::AuthenticateLastConfidentialBlock()
+{
+ GCM_Base::AuthenticateLastHeaderBlock();
+ PutBlock<word64, BigEndian, true>(NULL, m_buffer)(m_totalHeaderLength*8)(m_totalMessageLength*8);
+ GCM_Base::AuthenticateBlocks(m_buffer, HASH_BLOCKSIZE);
+}
+
+void GCM_Base::AuthenticateLastFooterBlock(byte *mac, size_t macSize)
+{
+ m_ctr.Seek(0);
+ ReverseHashBufferIfNeeded();
+ m_ctr.ProcessData(mac, HashBuffer(), macSize);
+}
+
+NAMESPACE_END
+
+#endif // #ifndef CRYPTOPP_GENERATE_X64_MASM
+#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 07:46:09 +0100