rijndael.cpp
// rijndael.cpp - modified by Chris Morgan <cmorgan@wpi.edu>
// and Wei Dai from Paulo Baretto's Rijndael implementation
// The original code and all modifications are in the public domain.
// use "cl /EP /P /DCRYPTOPP_GENERATE_X64_MASM rijndael.cpp" to generate MASM code
/*
July 2018: Added support for ARMv7 AES instructions via Cryptogams ASM.
See the head notes in aes_armv4.S for copyright and license.
*/
/*
September 2017: Added support for Power8 AES instructions via compiler intrinsics.
*/
/*
July 2017: Added support for ARMv8 AES instructions via compiler intrinsics.
*/
/*
July 2010: Added support for AES-NI instructions via compiler intrinsics.
*/
/*
Feb 2009: The x86/x64 assembly code was rewritten in by Wei Dai to do counter mode
caching, which was invented by Hongjun Wu and popularized by Daniel J. Bernstein
and Peter Schwabe in their paper "New AES software speed records". The round
function was also modified to include a trick similar to one in Brian Gladman's
x86 assembly code, doing an 8-bit register move to minimize the number of
register spills. Also switched to compressed tables and copying round keys to
the stack.
The C++ implementation uses compressed tables if
CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS is defined.
It is defined on x86 platforms by default but no others.
*/
/*
July 2006: Defense against timing attacks was added in by Wei Dai.
The code now uses smaller tables in the first and last rounds,
and preloads them into L1 cache before usage (by loading at least
one element in each cache line).
We try to delay subsequent accesses to each table (used in the first
and last rounds) until all of the table has been preloaded. Hopefully
the compiler isn't smart enough to optimize that code away.
After preloading the table, we also try not to access any memory location
other than the table and the stack, in order to prevent table entries from
being unloaded from L1 cache, until that round is finished.
(Some popular CPUs have 2-way associative caches.)
*/
// This is the original introductory comment:
/**
* version 3.0 (December 2000)
*
* Optimised ANSI C code for the Rijndael cipher (now AES)
*
* author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be>
* author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be>
* author Paulo Barreto <paulo.barreto@terra.com.br>
*
* This code is hereby placed in the public domain.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "pch.h"
#include "config.h"
#ifndef CRYPTOPP_IMPORTS
#ifndef CRYPTOPP_GENERATE_X64_MASM
#include "rijndael.h"
#include "misc.h"
#include "cpu.h"
// VS2017 and global optimization bug. Also see
// https://github.com/weidai11/cryptopp/issues/649
#if (CRYPTOPP_MSC_VERSION >= 1910) && (CRYPTOPP_MSC_VERSION <= 1916)
# ifndef CRYPTOPP_DEBUG
# pragma optimize("", off)
# pragma optimize("ts", on)
# endif
#endif
NAMESPACE_BEGIN(CryptoPP)
// Hack for http://github.com/weidai11/cryptopp/issues/42 and http://github.com/weidai11/cryptopp/issues/132
#if (CRYPTOPP_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE))
# define CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS 1
#endif
// Clang intrinsic casts
#define M128I_CAST(x) ((__m128i *)(void *)(x))
#define CONST_M128I_CAST(x) ((const __m128i *)(const void *)(x))
#if defined(CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS)
# if (CRYPTOPP_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE)) && !defined(CRYPTOPP_DISABLE_RIJNDAEL_ASM)
namespace rdtable {CRYPTOPP_ALIGN_DATA(16) word64 Te[256+2];}
using namespace rdtable;
# else
static word64 Te[256];
# endif
static word64 Td[256];
#else // Not CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS
# if defined(CRYPTOPP_X64_MASM_AVAILABLE)
// Unused; avoids linker error on Microsoft X64 non-AESNI platforms
namespace rdtable {CRYPTOPP_ALIGN_DATA(16) word64 Te[256+2];}
# endif
CRYPTOPP_ALIGN_DATA(16) static word32 Te[256*4];
CRYPTOPP_ALIGN_DATA(16) static word32 Td[256*4];
#endif // CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS
static volatile bool s_TeFilled = false, s_TdFilled = false;
ANONYMOUS_NAMESPACE_BEGIN
#if CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X86
// Determine whether the range between begin and end overlaps
// with the same 4k block offsets as the Te table. Logically,
// the code is trying to create the condition:
//
// Two separate memory pages:
//
// +-----+ +-----+
// |XXXXX| |YYYYY|
// |XXXXX| |YYYYY|
// | | | |
// | | | |
// +-----+ +-----+
// Te Table Locals
//
// Have a logical cache view of (X and Y may be inverted):
//
// +-----+
// |XXXXX|
// |XXXXX|
// |YYYYY|
// |YYYYY|
// +-----+
//
static inline bool AliasedWithTable(const byte *begin, const byte *end)
{
ptrdiff_t s0 = uintptr_t(begin)%4096, s1 = uintptr_t(end)%4096;
ptrdiff_t t0 = uintptr_t(Te)%4096, t1 = (uintptr_t(Te)+sizeof(Te))%4096;
if (t1 > t0)
return (s0 >= t0 && s0 < t1) || (s1 > t0 && s1 <= t1);
else
return (s0 < t1 || s1 <= t1) || (s0 >= t0 || s1 > t0);
}
struct Locals
{
word32 subkeys[4*12], workspace[8];
const byte *inBlocks, *inXorBlocks, *outXorBlocks;
byte *outBlocks;
size_t inIncrement, inXorIncrement, outXorIncrement, outIncrement;
size_t regSpill, lengthAndCounterFlag, keysBegin;
};
const size_t s_aliasPageSize = 4096;
const size_t s_aliasBlockSize = 256;
const size_t s_sizeToAllocate = s_aliasPageSize + s_aliasBlockSize + sizeof(Locals);
#endif // CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X86
ANONYMOUS_NAMESPACE_END
// ************************* Portable Code ************************************
#define QUARTER_ROUND(L, T, t, a, b, c, d) \
a ^= L(T, 3, byte(t)); t >>= 8;\
b ^= L(T, 2, byte(t)); t >>= 8;\
c ^= L(T, 1, byte(t)); t >>= 8;\
d ^= L(T, 0, t);
#define QUARTER_ROUND_LE(t, a, b, c, d) \
tempBlock[a] = ((byte *)(Te+byte(t)))[1]; t >>= 8;\
tempBlock[b] = ((byte *)(Te+byte(t)))[1]; t >>= 8;\
tempBlock[c] = ((byte *)(Te+byte(t)))[1]; t >>= 8;\
tempBlock[d] = ((byte *)(Te+t))[1];
#if defined(CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS)
#define QUARTER_ROUND_LD(t, a, b, c, d) \
tempBlock[a] = ((byte *)(Td+byte(t)))[GetNativeByteOrder()*7]; t >>= 8;\
tempBlock[b] = ((byte *)(Td+byte(t)))[GetNativeByteOrder()*7]; t >>= 8;\
tempBlock[c] = ((byte *)(Td+byte(t)))[GetNativeByteOrder()*7]; t >>= 8;\
tempBlock[d] = ((byte *)(Td+t))[GetNativeByteOrder()*7];
#else
#define QUARTER_ROUND_LD(t, a, b, c, d) \
tempBlock[a] = Sd[byte(t)]; t >>= 8;\
tempBlock[b] = Sd[byte(t)]; t >>= 8;\
tempBlock[c] = Sd[byte(t)]; t >>= 8;\
tempBlock[d] = Sd[t];
#endif
#define QUARTER_ROUND_E(t, a, b, c, d) QUARTER_ROUND(TL_M, Te, t, a, b, c, d)
#define QUARTER_ROUND_D(t, a, b, c, d) QUARTER_ROUND(TL_M, Td, t, a, b, c, d)
#if (CRYPTOPP_LITTLE_ENDIAN)
#define QUARTER_ROUND_FE(t, a, b, c, d) QUARTER_ROUND(TL_F, Te, t, d, c, b, a)
#define QUARTER_ROUND_FD(t, a, b, c, d) QUARTER_ROUND(TL_F, Td, t, d, c, b, a)
#if defined(CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS)
#define TL_F(T, i, x) (*(word32 *)(void *)((byte *)T + x*8 + (6-i)%4+1))
#define TL_M(T, i, x) (*(word32 *)(void *)((byte *)T + x*8 + (i+3)%4+1))
#else
#define TL_F(T, i, x) rotrFixed(T[x], (3-i)*8)
#define TL_M(T, i, x) T[i*256 + x]
#endif
#else
#define QUARTER_ROUND_FE(t, a, b, c, d) QUARTER_ROUND(TL_F, Te, t, a, b, c, d)
#define QUARTER_ROUND_FD(t, a, b, c, d) QUARTER_ROUND(TL_F, Td, t, a, b, c, d)
#if defined(CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS)
#define TL_F(T, i, x) (*(word32 *)(void *)((byte *)T + x*8 + (4-i)%4))
#define TL_M TL_F
#else
#define TL_F(T, i, x) rotrFixed(T[x], i*8)
#define TL_M(T, i, x) T[i*256 + x]
#endif
#endif
#define f2(x) ((x<<1)^(((x>>7)&1)*0x11b))
#define f4(x) ((x<<2)^(((x>>6)&1)*0x11b)^(((x>>6)&2)*0x11b))
#define f8(x) ((x<<3)^(((x>>5)&1)*0x11b)^(((x>>5)&2)*0x11b)^(((x>>5)&4)*0x11b))
#define f3(x) (f2(x) ^ x)
#define f9(x) (f8(x) ^ x)
#define fb(x) (f8(x) ^ f2(x) ^ x)
#define fd(x) (f8(x) ^ f4(x) ^ x)
#define fe(x) (f8(x) ^ f4(x) ^ f2(x))
unsigned int Rijndael::Base::OptimalDataAlignment() const
{
#if (CRYPTOPP_AESNI_AVAILABLE)
if (HasAESNI())
return 16; // load __m128i
#endif
#if (CRYPTOPP_ARM_AES_AVAILABLE)
if (HasAES())
return 4; // load uint32x4_t
#endif
#if (CRYPTOGAMS_ARM_AES)
// Must use 1 here for Cryptogams AES. Also see
// https://github.com/weidai11/cryptopp/issues/683
if (HasARMv7())
return 1;
#endif
#if (CRYPTOPP_POWER8_AES_AVAILABLE)
if (HasAES())
return 16; // load uint32x4_p
#endif
return BlockTransformation::OptimalDataAlignment();
}
void Rijndael::Base::FillEncTable()
{
for (int i=0; i<256; i++)
{
byte x = Se[i];
#if defined(CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS)
word32 y = word32(x)<<8 | word32(x)<<16 | word32(f2(x))<<24;
Te[i] = word64(y | f3(x))<<32 | y;
#else
word32 y = f3(x) | word32(x)<<8 | word32(x)<<16 | word32(f2(x))<<24;
for (int j=0; j<4; j++)
{
Te[i+j*256] = y;
y = rotrConstant<8>(y);
}
#endif
}
#if (CRYPTOPP_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE)) && !defined(CRYPTOPP_DISABLE_RIJNDAEL_ASM)
Te[256] = Te[257] = 0;
#endif
s_TeFilled = true;
}
void Rijndael::Base::FillDecTable()
{
for (int i=0; i<256; i++)
{
byte x = Sd[i];
#if defined(CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS)
word32 y = word32(fd(x))<<8 | word32(f9(x))<<16 | word32(fe(x))<<24;
Td[i] = word64(y | fb(x))<<32 | y | x;
#else
word32 y = fb(x) | word32(fd(x))<<8 | word32(f9(x))<<16 | word32(fe(x))<<24;
for (int j=0; j<4; j++)
{
Td[i+j*256] = y;
y = rotrConstant<8>(y);
}
#endif
}
s_TdFilled = true;
}
#if (CRYPTOPP_AESNI_AVAILABLE)
extern void Rijndael_UncheckedSetKey_SSE4_AESNI(const byte *userKey, size_t keyLen, word32* rk);
extern void Rijndael_UncheckedSetKeyRev_AESNI(word32 *key, unsigned int rounds);
extern size_t Rijndael_Enc_AdvancedProcessBlocks_AESNI(const word32 *subkeys, size_t rounds,
const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags);
extern size_t Rijndael_Dec_AdvancedProcessBlocks_AESNI(const word32 *subkeys, size_t rounds,
const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags);
#endif
#if (CRYPTOPP_ARM_AES_AVAILABLE)
extern size_t Rijndael_Enc_AdvancedProcessBlocks_ARMV8(const word32 *subkeys, size_t rounds,
const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags);
extern size_t Rijndael_Dec_AdvancedProcessBlocks_ARMV8(const word32 *subkeys, size_t rounds,
const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags);
#endif
#if (CRYPTOGAMS_ARM_AES)
extern "C" int cryptogams_AES_set_encrypt_key(const unsigned char *userKey, const int bitLen, word32 *rkey);
extern "C" int cryptogams_AES_set_decrypt_key(const unsigned char *userKey, const int bitLen, word32 *rkey);
extern "C" void cryptogams_AES_encrypt_block(const unsigned char *in, unsigned char *out, const word32 *rkey);
extern "C" void cryptogams_AES_decrypt_block(const unsigned char *in, unsigned char *out, const word32 *rkey);
#endif
#if (CRYPTOPP_POWER8_AES_AVAILABLE)
extern void Rijndael_UncheckedSetKey_POWER8(const byte* userKey, size_t keyLen,
word32* rk, const byte* Se);
extern size_t Rijndael_Enc_AdvancedProcessBlocks128_6x1_ALTIVEC(const word32 *subkeys, size_t rounds,
const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags);
extern size_t Rijndael_Dec_AdvancedProcessBlocks128_6x1_ALTIVEC(const word32 *subkeys, size_t rounds,
const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags);
#endif
#if (CRYPTOGAMS_ARM_AES)
int CRYPTOGAMS_set_encrypt_key(const byte *userKey, const int bitLen, word32 *rkey)
{
return cryptogams_AES_set_encrypt_key(userKey, bitLen, rkey);
}
int CRYPTOGAMS_set_decrypt_key(const byte *userKey, const int bitLen, word32 *rkey)
{
return cryptogams_AES_set_decrypt_key(userKey, bitLen, rkey);
}
void CRYPTOGAMS_encrypt(const byte *inBlock, const byte *xorBlock, byte *outBlock, const word32 *rkey)
{
cryptogams_AES_encrypt_block(inBlock, outBlock, rkey);
if (xorBlock)
xorbuf (outBlock, xorBlock, 16);
}
void CRYPTOGAMS_decrypt(const byte *inBlock, const byte *xorBlock, byte *outBlock, const word32 *rkey)
{
cryptogams_AES_decrypt_block(inBlock, outBlock, rkey);
if (xorBlock)
xorbuf (outBlock, xorBlock, 16);
}
#endif
std::string Rijndael::Base::AlgorithmProvider() const
{
#if (CRYPTOPP_AESNI_AVAILABLE)
if (HasAESNI())
return "AESNI";
#endif
#if CRYPTOPP_SSE2_ASM_AVAILABLE && !defined(CRYPTOPP_DISABLE_RIJNDAEL_ASM)
if (HasSSE2())
return "SSE2";
#endif
#if (CRYPTOPP_ARM_AES_AVAILABLE)
if (HasAES())
return "ARMv8";
#endif
#if (CRYPTOGAMS_ARM_AES)
if (HasARMv7())
return "ARMv7";
#endif
#if (CRYPTOPP_POWER8_AES_AVAILABLE)
if (HasAES())
return "Power8";
#endif
return "C++";
}
void Rijndael::Base::UncheckedSetKey(const byte *userKey, unsigned int keyLen, const NameValuePairs &)
{
AssertValidKeyLength(keyLen);
#if (CRYPTOGAMS_ARM_AES)
if (HasARMv7())
{
m_rounds = keyLen/4 + 6;
m_key.New(4*(14+1)+4);
if (IsForwardTransformation())
CRYPTOGAMS_set_encrypt_key(userKey, keyLen*8, m_key.begin());
else
CRYPTOGAMS_set_decrypt_key(userKey, keyLen*8, m_key.begin());
return;
}
#endif
#if CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X32 || CRYPTOPP_BOOL_X86
m_aliasBlock.New(s_sizeToAllocate);
// The alias block is only used on IA-32 when unaligned data access is in effect.
// Setting the low water mark to 0 avoids zeroization when m_aliasBlock is unused.
m_aliasBlock.SetMark(0);
#endif
m_rounds = keyLen/4 + 6;
m_key.New(4*(m_rounds+1));
word32 *rk = m_key;
#if (CRYPTOPP_AESNI_AVAILABLE && CRYPTOPP_SSE41_AVAILABLE && (!defined(CRYPTOPP_MSC_VERSION) || CRYPTOPP_MSC_VERSION >= 1600 || CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32))
// MSVC 2008 SP1 generates bad code for _mm_extract_epi32() when compiling for X64
if (HasAESNI() && HasSSE41())
{
// TODO: Add non-SSE4.1 variant for low-end Atoms. The low-end
// Atoms have SSE2-SSSE3 and AES-NI, but not SSE4.1 or SSE4.2.
Rijndael_UncheckedSetKey_SSE4_AESNI(userKey, keyLen, rk);
if (!IsForwardTransformation())
Rijndael_UncheckedSetKeyRev_AESNI(m_key, m_rounds);
return;
}
#endif
#if CRYPTOPP_POWER8_AES_AVAILABLE
if (HasAES())
{
// We still need rcon and Se to fallback to C/C++ for AES-192 and AES-256.
// The IBM docs on AES sucks. Intel's docs on AESNI puts IBM to shame.
Rijndael_UncheckedSetKey_POWER8(userKey, keyLen, rk, Se);
return;
}
#endif
GetUserKey(BIG_ENDIAN_ORDER, rk, keyLen/4, userKey, keyLen);
const word32 *rc = rcon;
word32 temp;
while (true)
{
temp = rk[keyLen/4-1];
word32 x = (word32(Se[GETBYTE(temp, 2)]) << 24) ^ (word32(Se[GETBYTE(temp, 1)]) << 16) ^
(word32(Se[GETBYTE(temp, 0)]) << 8) ^ Se[GETBYTE(temp, 3)];
rk[keyLen/4] = rk[0] ^ x ^ *(rc++);
rk[keyLen/4+1] = rk[1] ^ rk[keyLen/4];
rk[keyLen/4+2] = rk[2] ^ rk[keyLen/4+1];
rk[keyLen/4+3] = rk[3] ^ rk[keyLen/4+2];
if (rk + keyLen/4 + 4 == m_key.end())
break;
if (keyLen == 24)
{
rk[10] = rk[ 4] ^ rk[ 9];
rk[11] = rk[ 5] ^ rk[10];
}
else if (keyLen == 32)
{
temp = rk[11];
rk[12] = rk[ 4] ^ (word32(Se[GETBYTE(temp, 3)]) << 24) ^ (word32(Se[GETBYTE(temp, 2)]) << 16) ^ (word32(Se[GETBYTE(temp, 1)]) << 8) ^ Se[GETBYTE(temp, 0)];
rk[13] = rk[ 5] ^ rk[12];
rk[14] = rk[ 6] ^ rk[13];
rk[15] = rk[ 7] ^ rk[14];
}
rk += keyLen/4;
}
rk = m_key;
if (IsForwardTransformation())
{
if (!s_TeFilled)
FillEncTable();
ConditionalByteReverse(BIG_ENDIAN_ORDER, rk, rk, 16);
ConditionalByteReverse(BIG_ENDIAN_ORDER, rk + m_rounds*4, rk + m_rounds*4, 16);
}
else
{
if (!s_TdFilled)
FillDecTable();
#define InverseMixColumn(x) \
TL_M(Td, 0, Se[GETBYTE(x, 3)]) ^ TL_M(Td, 1, Se[GETBYTE(x, 2)]) ^ \
TL_M(Td, 2, Se[GETBYTE(x, 1)]) ^ TL_M(Td, 3, Se[GETBYTE(x, 0)])
unsigned int i, j;
for (i = 4, j = 4*m_rounds-4; i < j; i += 4, j -= 4)
{
temp = InverseMixColumn(rk[i ]); rk[i ] = InverseMixColumn(rk[j ]); rk[j ] = temp;
temp = InverseMixColumn(rk[i + 1]); rk[i + 1] = InverseMixColumn(rk[j + 1]); rk[j + 1] = temp;
temp = InverseMixColumn(rk[i + 2]); rk[i + 2] = InverseMixColumn(rk[j + 2]); rk[j + 2] = temp;
temp = InverseMixColumn(rk[i + 3]); rk[i + 3] = InverseMixColumn(rk[j + 3]); rk[j + 3] = temp;
}
rk[i+0] = InverseMixColumn(rk[i+0]);
rk[i+1] = InverseMixColumn(rk[i+1]);
rk[i+2] = InverseMixColumn(rk[i+2]);
rk[i+3] = InverseMixColumn(rk[i+3]);
temp = ConditionalByteReverse(BIG_ENDIAN_ORDER, rk[0]); rk[0] = ConditionalByteReverse(BIG_ENDIAN_ORDER, rk[4*m_rounds+0]); rk[4*m_rounds+0] = temp;
temp = ConditionalByteReverse(BIG_ENDIAN_ORDER, rk[1]); rk[1] = ConditionalByteReverse(BIG_ENDIAN_ORDER, rk[4*m_rounds+1]); rk[4*m_rounds+1] = temp;
temp = ConditionalByteReverse(BIG_ENDIAN_ORDER, rk[2]); rk[2] = ConditionalByteReverse(BIG_ENDIAN_ORDER, rk[4*m_rounds+2]); rk[4*m_rounds+2] = temp;
temp = ConditionalByteReverse(BIG_ENDIAN_ORDER, rk[3]); rk[3] = ConditionalByteReverse(BIG_ENDIAN_ORDER, rk[4*m_rounds+3]); rk[4*m_rounds+3] = temp;
}
#if CRYPTOPP_AESNI_AVAILABLE
if (HasAESNI())
ConditionalByteReverse(BIG_ENDIAN_ORDER, rk+4, rk+4, (m_rounds-1)*16);
#endif
#if CRYPTOPP_ARM_AES_AVAILABLE
if (HasAES())
ConditionalByteReverse(BIG_ENDIAN_ORDER, rk+4, rk+4, (m_rounds-1)*16);
#endif
}
void Rijndael::Enc::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
{
#if CRYPTOPP_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE) || CRYPTOPP_AESNI_AVAILABLE
# if (CRYPTOPP_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE)) && !defined(CRYPTOPP_DISABLE_RIJNDAEL_ASM)
if (HasSSE2())
# else
if (HasAESNI())
# endif
{
(void)Rijndael::Enc::AdvancedProcessBlocks(inBlock, xorBlock, outBlock, 16, 0);
return;
}
#endif
#if (CRYPTOPP_ARM_AES_AVAILABLE)
if (HasAES())
{
(void)Rijndael::Enc::AdvancedProcessBlocks(inBlock, xorBlock, outBlock, 16, 0);
return;
}
#endif
#if (CRYPTOGAMS_ARM_AES)
if (HasARMv7())
{
CRYPTOGAMS_encrypt(inBlock, xorBlock, outBlock, m_key.begin());
return;
}
#endif
#if (CRYPTOPP_POWER8_AES_AVAILABLE)
if (HasAES())
{
(void)Rijndael::Enc::AdvancedProcessBlocks(inBlock, xorBlock, outBlock, 16, 0);
return;
}
#endif
typedef BlockGetAndPut<word32, NativeByteOrder> Block;
word32 s0, s1, s2, s3, t0, t1, t2, t3;
Block::Get(inBlock)(s0)(s1)(s2)(s3);
const word32 *rk = m_key;
s0 ^= rk[0];
s1 ^= rk[1];
s2 ^= rk[2];
s3 ^= rk[3];
t0 = rk[4];
t1 = rk[5];
t2 = rk[6];
t3 = rk[7];
rk += 8;
// timing attack countermeasure. see comments at top for more details.
// also see http://github.com/weidai11/cryptopp/issues/146
const int cacheLineSize = GetCacheLineSize();
unsigned int i;
volatile word32 _u = 0;
word32 u = _u;
#if defined(CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS)
for (i=0; i<2048; i+=cacheLineSize)
#else
for (i=0; i<1024; i+=cacheLineSize)
#endif
u &= *(const word32 *)(const void *)(((const byte *)Te)+i);
u &= Te[255];
s0 |= u; s1 |= u; s2 |= u; s3 |= u;
QUARTER_ROUND_FE(s3, t0, t1, t2, t3)
QUARTER_ROUND_FE(s2, t3, t0, t1, t2)
QUARTER_ROUND_FE(s1, t2, t3, t0, t1)
QUARTER_ROUND_FE(s0, t1, t2, t3, t0)
// Nr - 2 full rounds:
unsigned int r = m_rounds/2 - 1;
do
{
s0 = rk[0]; s1 = rk[1]; s2 = rk[2]; s3 = rk[3];
QUARTER_ROUND_E(t3, s0, s1, s2, s3)
QUARTER_ROUND_E(t2, s3, s0, s1, s2)
QUARTER_ROUND_E(t1, s2, s3, s0, s1)
QUARTER_ROUND_E(t0, s1, s2, s3, s0)
t0 = rk[4]; t1 = rk[5]; t2 = rk[6]; t3 = rk[7];
QUARTER_ROUND_E(s3, t0, t1, t2, t3)
QUARTER_ROUND_E(s2, t3, t0, t1, t2)
QUARTER_ROUND_E(s1, t2, t3, t0, t1)
QUARTER_ROUND_E(s0, t1, t2, t3, t0)
rk += 8;
} while (--r);
word32 tbw[4];
byte *const tempBlock = (byte *)tbw;
QUARTER_ROUND_LE(t2, 15, 2, 5, 8)
QUARTER_ROUND_LE(t1, 11, 14, 1, 4)
QUARTER_ROUND_LE(t0, 7, 10, 13, 0)
QUARTER_ROUND_LE(t3, 3, 6, 9, 12)
Block::Put(xorBlock, outBlock)(tbw[0]^rk[0])(tbw[1]^rk[1])(tbw[2]^rk[2])(tbw[3]^rk[3]);
}
void Rijndael::Dec::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const
{
#if CRYPTOPP_AESNI_AVAILABLE
if (HasAESNI())
{
(void)Rijndael::Dec::AdvancedProcessBlocks(inBlock, xorBlock, outBlock, 16, 0);
return;
}
#endif
#if (CRYPTOPP_ARM_AES_AVAILABLE)
if (HasAES())
{
(void)Rijndael::Dec::AdvancedProcessBlocks(inBlock, xorBlock, outBlock, 16, 0);
return;
}
#endif
#if (CRYPTOGAMS_ARM_AES)
if (HasARMv7())
{
CRYPTOGAMS_decrypt(inBlock, xorBlock, outBlock, m_key.begin());
return;
}
#endif
#if (CRYPTOPP_POWER8_AES_AVAILABLE)
if (HasAES())
{
(void)Rijndael::Dec::AdvancedProcessBlocks(inBlock, xorBlock, outBlock, 16, 0);
return;
}
#endif
typedef BlockGetAndPut<word32, NativeByteOrder> Block;
word32 s0, s1, s2, s3, t0, t1, t2, t3;
Block::Get(inBlock)(s0)(s1)(s2)(s3);
const word32 *rk = m_key;
s0 ^= rk[0];
s1 ^= rk[1];
s2 ^= rk[2];
s3 ^= rk[3];
t0 = rk[4];
t1 = rk[5];
t2 = rk[6];
t3 = rk[7];
rk += 8;
// timing attack countermeasure. see comments at top for more details.
// also see http://github.com/weidai11/cryptopp/issues/146
const int cacheLineSize = GetCacheLineSize();
unsigned int i;
volatile word32 _u = 0;
word32 u = _u;
#if defined(CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS)
for (i=0; i<2048; i+=cacheLineSize)
#else
for (i=0; i<1024; i+=cacheLineSize)
#endif
u &= *(const word32 *)(const void *)(((const byte *)Td)+i);
u &= Td[255];
s0 |= u; s1 |= u; s2 |= u; s3 |= u;
QUARTER_ROUND_FD(s3, t2, t1, t0, t3)
QUARTER_ROUND_FD(s2, t1, t0, t3, t2)
QUARTER_ROUND_FD(s1, t0, t3, t2, t1)
QUARTER_ROUND_FD(s0, t3, t2, t1, t0)
// Nr - 2 full rounds:
unsigned int r = m_rounds/2 - 1;
do
{
s0 = rk[0]; s1 = rk[1]; s2 = rk[2]; s3 = rk[3];
QUARTER_ROUND_D(t3, s2, s1, s0, s3)
QUARTER_ROUND_D(t2, s1, s0, s3, s2)
QUARTER_ROUND_D(t1, s0, s3, s2, s1)
QUARTER_ROUND_D(t0, s3, s2, s1, s0)
t0 = rk[4]; t1 = rk[5]; t2 = rk[6]; t3 = rk[7];
QUARTER_ROUND_D(s3, t2, t1, t0, t3)
QUARTER_ROUND_D(s2, t1, t0, t3, t2)
QUARTER_ROUND_D(s1, t0, t3, t2, t1)
QUARTER_ROUND_D(s0, t3, t2, t1, t0)
rk += 8;
} while (--r);
#if !(defined(CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS))
// timing attack countermeasure. see comments at top for more details
// If CRYPTOPP_ALLOW_RIJNDAEL_UNALIGNED_DATA_ACCESS is defined,
// QUARTER_ROUND_LD will use Td, which is already preloaded.
u = _u;
for (i=0; i<256; i+=cacheLineSize)
u &= *(const word32 *)(const void *)(Sd+i);
u &= *(const word32 *)(const void *)(Sd+252);
t0 |= u; t1 |= u; t2 |= u; t3 |= u;
#endif
word32 tbw[4];
byte *const tempBlock = (byte *)tbw;
QUARTER_ROUND_LD(t2, 7, 2, 13, 8)
QUARTER_ROUND_LD(t1, 3, 14, 9, 4)
QUARTER_ROUND_LD(t0, 15, 10, 5, 0)
QUARTER_ROUND_LD(t3, 11, 6, 1, 12)
Block::Put(xorBlock, outBlock)(tbw[0]^rk[0])(tbw[1]^rk[1])(tbw[2]^rk[2])(tbw[3]^rk[3]);
}
// ************************* Assembly Code ************************************
#if CRYPTOPP_MSC_VERSION
# pragma warning(disable: 4731) // frame pointer register 'ebp' modified by inline assembly code
#endif
#endif // #ifndef CRYPTOPP_GENERATE_X64_MASM
#if CRYPTOPP_SSE2_ASM_AVAILABLE && !defined(CRYPTOPP_DISABLE_RIJNDAEL_ASM)
CRYPTOPP_NAKED void CRYPTOPP_FASTCALL Rijndael_Enc_AdvancedProcessBlocks_SSE2(void *locals, const word32 *k)
{
CRYPTOPP_UNUSED(locals); CRYPTOPP_UNUSED(k);
#if CRYPTOPP_BOOL_X86
#define L_REG esp
#define L_INDEX(i) (L_REG+768+i)
#define L_INXORBLOCKS L_INBLOCKS+4
#define L_OUTXORBLOCKS L_INBLOCKS+8
#define L_OUTBLOCKS L_INBLOCKS+12
#define L_INCREMENTS L_INDEX(16*15)
#define L_SP L_INDEX(16*16)
#define L_LENGTH L_INDEX(16*16+4)
#define L_KEYS_BEGIN L_INDEX(16*16+8)
#define MOVD movd
#define MM(i) mm##i
#define MXOR(a,b,c) \
AS2( movzx esi, b)\
AS2( movd mm7, DWORD PTR [AS_REG_7+8*WORD_REG(si)+MAP0TO4(c)])\
AS2( pxor MM(a), mm7)\
#define MMOV(a,b,c) \
AS2( movzx esi, b)\
AS2( movd MM(a), DWORD PTR [AS_REG_7+8*WORD_REG(si)+MAP0TO4(c)])\
#else
#define L_REG r8
#define L_INDEX(i) (L_REG+i)
#define L_INXORBLOCKS L_INBLOCKS+8
#define L_OUTXORBLOCKS L_INBLOCKS+16
#define L_OUTBLOCKS L_INBLOCKS+24
#define L_INCREMENTS L_INDEX(16*16)
#define L_LENGTH L_INDEX(16*18+8)
#define L_KEYS_BEGIN L_INDEX(16*19)
#define MOVD mov
#define MM_0 r9d
#define MM_1 r12d
#ifdef __GNUC__
#define MM_2 r11d
#else
#define MM_2 r10d
#endif
#define MM(i) MM_##i
#define MXOR(a,b,c) \
AS2( movzx esi, b)\
AS2( xor MM(a), DWORD PTR [AS_REG_7+8*WORD_REG(si)+MAP0TO4(c)])\
#define MMOV(a,b,c) \
AS2( movzx esi, b)\
AS2( mov MM(a), DWORD PTR [AS_REG_7+8*WORD_REG(si)+MAP0TO4(c)])\
#endif
#define L_SUBKEYS L_INDEX(0)
#define L_SAVED_X L_SUBKEYS
#define L_KEY12 L_INDEX(16*12)
#define L_LASTROUND L_INDEX(16*13)
#define L_INBLOCKS L_INDEX(16*14)
#define MAP0TO4(i) (ASM_MOD(i+3,4)+1)
#define XOR(a,b,c) \
AS2( movzx esi, b)\
AS2( xor a, DWORD PTR [AS_REG_7+8*WORD_REG(si)+MAP0TO4(c)])\
#define MOV(a,b,c) \
AS2( movzx esi, b)\
AS2( mov a, DWORD PTR [AS_REG_7+8*WORD_REG(si)+MAP0TO4(c)])\
#ifdef CRYPTOPP_GENERATE_X64_MASM
ALIGN 8
Rijndael_Enc_AdvancedProcessBlocks PROC FRAME
rex_push_reg rsi
push_reg rdi
push_reg rbx
push_reg r12
.endprolog
mov L_REG, rcx
mov AS_REG_7, ?Te@rdtable@CryptoPP@@3PA_KA
mov edi, DWORD PTR [?g_cacheLineSize@CryptoPP@@3IA]
#elif defined(__GNUC__)
__asm__ __volatile__
(
INTEL_NOPREFIX
#if CRYPTOPP_BOOL_X64
AS2( mov L_REG, rcx)
#endif
AS_PUSH_IF86(bx)
AS_PUSH_IF86(bp)
AS2( mov AS_REG_7, WORD_REG(si))
#else
AS_PUSH_IF86(si)
AS_PUSH_IF86(di)
AS_PUSH_IF86(bx)
AS_PUSH_IF86(bp)
AS2( lea AS_REG_7, [Te])
AS2( mov edi, [g_cacheLineSize])
#endif
#if CRYPTOPP_BOOL_X86
AS2( mov [ecx+16*12+16*4], esp) // save esp to L_SP
AS2( lea esp, [ecx-768])
#endif
// copy subkeys to stack
AS2( mov WORD_REG(si), [L_KEYS_BEGIN])
AS2( mov WORD_REG(ax), 16)
AS2( and WORD_REG(ax), WORD_REG(si))
AS2( movdqa xmm3, XMMWORD_PTR [WORD_REG(dx)+16+WORD_REG(ax)]) // subkey 1 (non-counter) or 2 (counter)
AS2( movdqa [L_KEY12], xmm3)
AS2( lea WORD_REG(ax), [WORD_REG(dx)+WORD_REG(ax)+2*16])
AS2( sub WORD_REG(ax), WORD_REG(si))
ASL(0)
AS2( movdqa xmm0, [WORD_REG(ax)+WORD_REG(si)])
AS2( movdqa XMMWORD_PTR [L_SUBKEYS+WORD_REG(si)], xmm0)
AS2( add WORD_REG(si), 16)
AS2( cmp WORD_REG(si), 16*12)
ATT_NOPREFIX
ASJ( jl, 0, b)
INTEL_NOPREFIX
// read subkeys 0, 1 and last
AS2( movdqa xmm4, [WORD_REG(ax)+WORD_REG(si)]) // last subkey
AS2( movdqa xmm1, [WORD_REG(dx)]) // subkey 0
AS2( MOVD MM(1), [WORD_REG(dx)+4*4]) // 0,1,2,3
AS2( mov ebx, [WORD_REG(dx)+5*4]) // 4,5,6,7
AS2( mov ecx, [WORD_REG(dx)+6*4]) // 8,9,10,11
AS2( mov edx, [WORD_REG(dx)+7*4]) // 12,13,14,15
// load table into cache
AS2( xor WORD_REG(ax), WORD_REG(ax))
ASL(9)
AS2( mov esi, [AS_REG_7+WORD_REG(ax)])
AS2( add WORD_REG(ax), WORD_REG(di))
AS2( mov esi, [AS_REG_7+WORD_REG(ax)])
AS2( add WORD_REG(ax), WORD_REG(di))
AS2( mov esi, [AS_REG_7+WORD_REG(ax)])
AS2( add WORD_REG(ax), WORD_REG(di))
AS2( mov esi, [AS_REG_7+WORD_REG(ax)])
AS2( add WORD_REG(ax), WORD_REG(di))
AS2( cmp WORD_REG(ax), 2048)
ATT_NOPREFIX
ASJ( jl, 9, b)
INTEL_NOPREFIX
AS1( lfence)
AS2( test DWORD PTR [L_LENGTH], 1)
ATT_NOPREFIX
ASJ( jz, 8, f)
INTEL_NOPREFIX
// counter mode one-time setup
AS2( mov WORD_REG(si), [L_INBLOCKS])
AS2( movdqu xmm2, [WORD_REG(si)]) // counter
AS2( pxor xmm2, xmm1)
AS2( psrldq xmm1, 14)
AS2( movd eax, xmm1)
AS2( mov al, BYTE PTR [WORD_REG(si)+15])
AS2( MOVD MM(2), eax)
#if CRYPTOPP_BOOL_X86
AS2( mov eax, 1)
AS2( movd mm3, eax)
#endif
// partial first round, in: xmm2(15,14,13,12;11,10,9,8;7,6,5,4;3,2,1,0), out: mm1, ebx, ecx, edx
AS2( movd eax, xmm2)
AS2( psrldq xmm2, 4)
AS2( movd edi, xmm2)
AS2( psrldq xmm2, 4)
MXOR( 1, al, 0) // 0
XOR( edx, ah, 1) // 1
AS2( shr eax, 16)
XOR( ecx, al, 2) // 2
XOR( ebx, ah, 3) // 3
AS2( mov eax, edi)
AS2( movd edi, xmm2)
AS2( psrldq xmm2, 4)
XOR( ebx, al, 0) // 4
MXOR( 1, ah, 1) // 5
AS2( shr eax, 16)
XOR( edx, al, 2) // 6
XOR( ecx, ah, 3) // 7
AS2( mov eax, edi)
AS2( movd edi, xmm2)
XOR( ecx, al, 0) // 8
XOR( ebx, ah, 1) // 9
AS2( shr eax, 16)
MXOR( 1, al, 2) // 10
XOR( edx, ah, 3) // 11
AS2( mov eax, edi)
XOR( edx, al, 0) // 12
XOR( ecx, ah, 1) // 13
AS2( shr eax, 16)
XOR( ebx, al, 2) // 14
AS2( psrldq xmm2, 3)
// partial second round, in: ebx(4,5,6,7), ecx(8,9,10,11), edx(12,13,14,15), out: eax, ebx, edi, mm0
AS2( mov eax, [L_KEY12+0*4])
AS2( mov edi, [L_KEY12+2*4])
AS2( MOVD MM(0), [L_KEY12+3*4])
MXOR( 0, cl, 3) /* 11 */
XOR( edi, bl, 3) /* 7 */
MXOR( 0, bh, 2) /* 6 */
AS2( shr ebx, 16) /* 4,5 */
XOR( eax, bl, 1) /* 5 */
MOV( ebx, bh, 0) /* 4 */
AS2( xor ebx, [L_KEY12+1*4])
XOR( eax, ch, 2) /* 10 */
AS2( shr ecx, 16) /* 8,9 */
XOR( eax, dl, 3) /* 15 */
XOR( ebx, dh, 2) /* 14 */
AS2( shr edx, 16) /* 12,13 */
XOR( edi, ch, 0) /* 8 */
XOR( ebx, cl, 1) /* 9 */
XOR( edi, dl, 1) /* 13 */
MXOR( 0, dh, 0) /* 12 */
AS2( movd ecx, xmm2)
AS2( MOVD edx, MM(1))
AS2( MOVD [L_SAVED_X+3*4], MM(0))
AS2( mov [L_SAVED_X+0*4], eax)
AS2( mov [L_SAVED_X+1*4], ebx)
AS2( mov [L_SAVED_X+2*4], edi)
ATT_NOPREFIX
ASJ( jmp, 5, f)
INTEL_NOPREFIX
ASL(3)
// non-counter mode per-block setup
AS2( MOVD MM(1), [L_KEY12+0*4]) // 0,1,2,3
AS2( mov ebx, [L_KEY12+1*4]) // 4,5,6,7
AS2( mov ecx, [L_KEY12+2*4]) // 8,9,10,11
AS2( mov edx, [L_KEY12+3*4]) // 12,13,14,15
ASL(8)
AS2( mov WORD_REG(ax), [L_INBLOCKS])
AS2( movdqu xmm2, [WORD_REG(ax)])
AS2( mov WORD_REG(si), [L_INXORBLOCKS])
AS2( movdqu xmm5, [WORD_REG(si)])
AS2( pxor xmm2, xmm1)
AS2( pxor xmm2, xmm5)
// first round, in: xmm2(15,14,13,12;11,10,9,8;7,6,5,4;3,2,1,0), out: eax, ebx, ecx, edx
AS2( movd eax, xmm2)
AS2( psrldq xmm2, 4)
AS2( movd edi, xmm2)
AS2( psrldq xmm2, 4)
MXOR( 1, al, 0) // 0
XOR( edx, ah, 1) // 1
AS2( shr eax, 16)
XOR( ecx, al, 2) // 2
XOR( ebx, ah, 3) // 3
AS2( mov eax, edi)
AS2( movd edi, xmm2)
AS2( psrldq xmm2, 4)
XOR( ebx, al, 0) // 4
MXOR( 1, ah, 1) // 5
AS2( shr eax, 16)
XOR( edx, al, 2) // 6
XOR( ecx, ah, 3) // 7
AS2( mov eax, edi)
AS2( movd edi, xmm2)
XOR( ecx, al, 0) // 8
XOR( ebx, ah, 1) // 9
AS2( shr eax, 16)
MXOR( 1, al, 2) // 10
XOR( edx, ah, 3) // 11
AS2( mov eax, edi)
XOR( edx, al, 0) // 12
XOR( ecx, ah, 1) // 13
AS2( shr eax, 16)
XOR( ebx, al, 2) // 14
MXOR( 1, ah, 3) // 15
AS2( MOVD eax, MM(1))
AS2( add L_REG, [L_KEYS_BEGIN])
AS2( add L_REG, 4*16)
ATT_NOPREFIX
ASJ( jmp, 2, f)
INTEL_NOPREFIX
ASL(1)
// counter-mode per-block setup
AS2( MOVD ecx, MM(2))
AS2( MOVD edx, MM(1))
AS2( mov eax, [L_SAVED_X+0*4])
AS2( mov ebx, [L_SAVED_X+1*4])
AS2( xor cl, ch)
AS2( and WORD_REG(cx), 255)
ASL(5)
#if CRYPTOPP_BOOL_X86
AS2( paddb MM(2), mm3)
#else
AS2( add MM(2), 1)
#endif
// remaining part of second round, in: edx(previous round),esi(keyed counter byte) eax,ebx,[L_SAVED_X+2*4],[L_SAVED_X+3*4], out: eax,ebx,ecx,edx
AS2( xor edx, DWORD PTR [AS_REG_7+WORD_REG(cx)*8+3])
XOR( ebx, dl, 3)
MOV( ecx, dh, 2)
AS2( shr edx, 16)
AS2( xor ecx, [L_SAVED_X+2*4])
XOR( eax, dh, 0)
MOV( edx, dl, 1)
AS2( xor edx, [L_SAVED_X+3*4])
AS2( add L_REG, [L_KEYS_BEGIN])
AS2( add L_REG, 3*16)
ATT_NOPREFIX
ASJ( jmp, 4, f)
INTEL_NOPREFIX
// in: eax(0,1,2,3), ebx(4,5,6,7), ecx(8,9,10,11), edx(12,13,14,15)
// out: eax, ebx, edi, mm0
#define ROUND() \
MXOR( 0, cl, 3) /* 11 */\
AS2( mov cl, al) /* 8,9,10,3 */\
XOR( edi, ah, 2) /* 2 */\
AS2( shr eax, 16) /* 0,1 */\
XOR( edi, bl, 3) /* 7 */\
MXOR( 0, bh, 2) /* 6 */\
AS2( shr ebx, 16) /* 4,5 */\
MXOR( 0, al, 1) /* 1 */\
MOV( eax, ah, 0) /* 0 */\
XOR( eax, bl, 1) /* 5 */\
MOV( ebx, bh, 0) /* 4 */\
XOR( eax, ch, 2) /* 10 */\
XOR( ebx, cl, 3) /* 3 */\
AS2( shr ecx, 16) /* 8,9 */\
XOR( eax, dl, 3) /* 15 */\
XOR( ebx, dh, 2) /* 14 */\
AS2( shr edx, 16) /* 12,13 */\
XOR( edi, ch, 0) /* 8 */\
XOR( ebx, cl, 1) /* 9 */\
XOR( edi, dl, 1) /* 13 */\
MXOR( 0, dh, 0) /* 12 */\
ASL(2) // 2-round loop
AS2( MOVD MM(0), [L_SUBKEYS-4*16+3*4])
AS2( mov edi, [L_SUBKEYS-4*16+2*4])
ROUND()
AS2( mov ecx, edi)
AS2( xor eax, [L_SUBKEYS-4*16+0*4])
AS2( xor ebx, [L_SUBKEYS-4*16+1*4])
AS2( MOVD edx, MM(0))
ASL(4)
AS2( MOVD MM(0), [L_SUBKEYS-4*16+7*4])
AS2( mov edi, [L_SUBKEYS-4*16+6*4])
ROUND()
AS2( mov ecx, edi)
AS2( xor eax, [L_SUBKEYS-4*16+4*4])
AS2( xor ebx, [L_SUBKEYS-4*16+5*4])
AS2( MOVD edx, MM(0))
AS2( add L_REG, 32)
AS2( test L_REG, 255)
ATT_NOPREFIX
ASJ( jnz, 2, b)
INTEL_NOPREFIX
AS2( sub L_REG, 16*16)
#define LAST(a, b, c) \
AS2( movzx esi, a )\
AS2( movzx edi, BYTE PTR [AS_REG_7+WORD_REG(si)*8+1] )\
AS2( movzx esi, b )\
AS2( xor edi, DWORD PTR [AS_REG_7+WORD_REG(si)*8+0] )\
AS2( mov WORD PTR [L_LASTROUND+c], di )\
// last round
LAST(ch, dl, 2)
LAST(dh, al, 6)
AS2( shr edx, 16)
LAST(ah, bl, 10)
AS2( shr eax, 16)
LAST(bh, cl, 14)
AS2( shr ebx, 16)
LAST(dh, al, 12)
AS2( shr ecx, 16)
LAST(ah, bl, 0)
LAST(bh, cl, 4)
LAST(ch, dl, 8)
AS2( mov WORD_REG(ax), [L_OUTXORBLOCKS])
AS2( mov WORD_REG(bx), [L_OUTBLOCKS])
AS2( mov WORD_REG(cx), [L_LENGTH])
AS2( sub WORD_REG(cx), 16)
AS2( movdqu xmm2, [WORD_REG(ax)])
AS2( pxor xmm2, xmm4)
#if CRYPTOPP_BOOL_X86
AS2( movdqa xmm0, [L_INCREMENTS])
AS2( paddd xmm0, [L_INBLOCKS])
AS2( movdqa [L_INBLOCKS], xmm0)
#else
AS2( movdqa xmm0, [L_INCREMENTS+16])
AS2( paddq xmm0, [L_INBLOCKS+16])
AS2( movdqa [L_INBLOCKS+16], xmm0)
#endif
AS2( pxor xmm2, [L_LASTROUND])
AS2( movdqu [WORD_REG(bx)], xmm2)
ATT_NOPREFIX
ASJ( jle, 7, f)
INTEL_NOPREFIX
AS2( mov [L_LENGTH], WORD_REG(cx))
AS2( test WORD_REG(cx), 1)
ATT_NOPREFIX
ASJ( jnz, 1, b)
INTEL_NOPREFIX
#if CRYPTOPP_BOOL_X64
AS2( movdqa xmm0, [L_INCREMENTS])
AS2( paddq xmm0, [L_INBLOCKS])
AS2( movdqa [L_INBLOCKS], xmm0)
#endif
ATT_NOPREFIX
ASJ( jmp, 3, b)
INTEL_NOPREFIX
ASL(7)
// erase keys on stack
AS2( xorps xmm0, xmm0)
AS2( lea WORD_REG(ax), [L_SUBKEYS+7*16])
AS2( movaps [WORD_REG(ax)-7*16], xmm0)
AS2( movaps [WORD_REG(ax)-6*16], xmm0)
AS2( movaps [WORD_REG(ax)-5*16], xmm0)
AS2( movaps [WORD_REG(ax)-4*16], xmm0)
AS2( movaps [WORD_REG(ax)-3*16], xmm0)
AS2( movaps [WORD_REG(ax)-2*16], xmm0)
AS2( movaps [WORD_REG(ax)-1*16], xmm0)
AS2( movaps [WORD_REG(ax)+0*16], xmm0)
AS2( movaps [WORD_REG(ax)+1*16], xmm0)
AS2( movaps [WORD_REG(ax)+2*16], xmm0)
AS2( movaps [WORD_REG(ax)+3*16], xmm0)
AS2( movaps [WORD_REG(ax)+4*16], xmm0)
AS2( movaps [WORD_REG(ax)+5*16], xmm0)
AS2( movaps [WORD_REG(ax)+6*16], xmm0)
#if CRYPTOPP_BOOL_X86
AS2( mov esp, [L_SP])
AS1( emms)
#endif
AS_POP_IF86(bp)
AS_POP_IF86(bx)
#if defined(CRYPTOPP_MSC_VERSION) && CRYPTOPP_BOOL_X86
AS_POP_IF86(di)
AS_POP_IF86(si)
AS1(ret)
#endif
#ifdef CRYPTOPP_GENERATE_X64_MASM
pop r12
pop rbx
pop rdi
pop rsi
ret
Rijndael_Enc_AdvancedProcessBlocks ENDP
#endif
#ifdef __GNUC__
ATT_PREFIX
:
: "c" (locals), "d" (k), "S" (Te), "D" (g_cacheLineSize)
: "memory", "cc", "%eax"
#if CRYPTOPP_BOOL_X64
, "%rbx", "%r8", "%r9", "%r10", "%r11", "%r12"
#endif
);
#endif
}
#endif
#ifndef CRYPTOPP_GENERATE_X64_MASM
#ifdef CRYPTOPP_X64_MASM_AVAILABLE
extern "C" {
void Rijndael_Enc_AdvancedProcessBlocks_SSE2(void *locals, const word32 *k);
}
#endif
#if CRYPTOPP_RIJNDAEL_ADVANCED_PROCESS_BLOCKS
size_t Rijndael::Enc::AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const
{
#if CRYPTOPP_AESNI_AVAILABLE
if (HasAESNI())
return Rijndael_Enc_AdvancedProcessBlocks_AESNI(m_key, m_rounds, inBlocks, xorBlocks, outBlocks, length, flags);
#endif
#if CRYPTOPP_ARM_AES_AVAILABLE
if (HasAES())
return Rijndael_Enc_AdvancedProcessBlocks_ARMV8(m_key, m_rounds, inBlocks, xorBlocks, outBlocks, length, flags);
#endif
#if CRYPTOPP_POWER8_AES_AVAILABLE
if (HasAES())
return Rijndael_Enc_AdvancedProcessBlocks128_6x1_ALTIVEC(m_key, m_rounds, inBlocks, xorBlocks, outBlocks, length, flags);
#endif
#if (CRYPTOPP_SSE2_ASM_AVAILABLE || defined(CRYPTOPP_X64_MASM_AVAILABLE)) && !defined(CRYPTOPP_DISABLE_RIJNDAEL_ASM)
if (HasSSE2())
{
if (length < BLOCKSIZE)
return length;
static const byte *zeros = (const byte*)(Te+256);
m_aliasBlock.SetMark(m_aliasBlock.size());
byte *space = NULLPTR, *originalSpace = const_cast<byte*>(m_aliasBlock.data());
// round up to nearest 256 byte boundary
space = originalSpace + (s_aliasBlockSize - (uintptr_t)originalSpace % s_aliasBlockSize) % s_aliasBlockSize;
while (AliasedWithTable(space, space + sizeof(Locals)))
{
space += 256;
CRYPTOPP_ASSERT(space < (originalSpace + s_aliasPageSize));
}
size_t increment = BLOCKSIZE;
if (flags & BT_ReverseDirection)
{
CRYPTOPP_ASSERT(length % BLOCKSIZE == 0);
inBlocks += length - BLOCKSIZE;
xorBlocks += length - BLOCKSIZE;
outBlocks += length - BLOCKSIZE;
increment = 0-increment;
}
Locals &locals = *(Locals *)(void *)space;
locals.inBlocks = inBlocks;
locals.inXorBlocks = (flags & BT_XorInput) && xorBlocks ? xorBlocks : zeros;
locals.outXorBlocks = (flags & BT_XorInput) || !xorBlocks ? zeros : xorBlocks;
locals.outBlocks = outBlocks;
locals.inIncrement = (flags & BT_DontIncrementInOutPointers) ? 0 : increment;
locals.inXorIncrement = (flags & BT_XorInput) && xorBlocks ? increment : 0;
locals.outXorIncrement = (flags & BT_XorInput) || !xorBlocks ? 0 : increment;
locals.outIncrement = (flags & BT_DontIncrementInOutPointers) ? 0 : increment;
locals.lengthAndCounterFlag = length - (length%16) - bool(flags & BT_InBlockIsCounter);
int keysToCopy = m_rounds - (flags & BT_InBlockIsCounter ? 3 : 2);
locals.keysBegin = (12-keysToCopy)*16;
Rijndael_Enc_AdvancedProcessBlocks_SSE2(&locals, m_key);
return length % BLOCKSIZE;
}
#endif
return BlockTransformation::AdvancedProcessBlocks(inBlocks, xorBlocks, outBlocks, length, flags);
}
size_t Rijndael::Dec::AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const
{
#if CRYPTOPP_AESNI_AVAILABLE
if (HasAESNI())
return Rijndael_Dec_AdvancedProcessBlocks_AESNI(m_key, m_rounds, inBlocks, xorBlocks, outBlocks, length, flags);
#endif
#if CRYPTOPP_ARM_AES_AVAILABLE
if (HasAES())
return Rijndael_Dec_AdvancedProcessBlocks_ARMV8(m_key, m_rounds, inBlocks, xorBlocks, outBlocks, length, flags);
#endif
#if CRYPTOPP_POWER8_AES_AVAILABLE
if (HasAES())
return Rijndael_Dec_AdvancedProcessBlocks128_6x1_ALTIVEC(m_key, m_rounds, inBlocks, xorBlocks, outBlocks, length, flags);
#endif
return BlockTransformation::AdvancedProcessBlocks(inBlocks, xorBlocks, outBlocks, length, flags);
}
#endif // CRYPTOPP_RIJNDAEL_ADVANCED_PROCESS_BLOCKS
NAMESPACE_END
#endif
#endif
BlockTransformation::AdvancedProcessBlocks
virtual size_t AdvancedProcessBlocks(const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t length, word32 flags) const
Encrypt and xor multiple blocks using additional flags.
BlockTransformation::OptimalDataAlignment
virtual unsigned int OptimalDataAlignment() const
Provides input and output data alignment for optimal performance.
NameValuePairs
Interface for retrieving values given their names.
Definition cryptlib.h:327
Rijndael
Rijndael block cipher.
Definition rijndael.h:46
config.h
Library configuration file.
CRYPTOPP_BOOL_X86
#define CRYPTOPP_BOOL_X86
32-bit x86 platform
Definition config_cpu.h:52
CRYPTOPP_BOOL_X64
#define CRYPTOPP_BOOL_X64
32-bit x86 platform
Definition config_cpu.h:48
word32
unsigned int word32
32-bit unsigned datatype
Definition config_int.h:72
word64
unsigned long long word64
64-bit unsigned datatype
Definition config_int.h:101
cpu.h
Functions for CPU features and intrinsics.
BIG_ENDIAN_ORDER
@ BIG_ENDIAN_ORDER
byte order is big-endian
Definition cryptlib.h:152
misc.h
Utility functions for the Crypto++ library.
ConditionalByteReverse
T ConditionalByteReverse(ByteOrder order, T value)
Reverses bytes in a value depending upon endianness.
Definition misc.h:2417
GetUserKey
void GetUserKey(ByteOrder order, T *out, size_t outlen, const byte *in, size_t inlen)
Copy bytes in a buffer to an array of elements in big-endian order.
Definition misc.h:2500
xorbuf
CRYPTOPP_DLL void xorbuf(byte *buf, const byte *mask, size_t count)
Performs an XOR of a buffer with a mask.
CryptoPP
Crypto++ library namespace.
pch.h
Precompiled header file.
rijndael.h
Classes for Rijndael encryption algorithm.
BlockGetAndPut
Access a block of memory.
Definition misc.h:3053
CRYPTOPP_ASSERT
#define CRYPTOPP_ASSERT(exp)
Debugging and diagnostic assertion.
Definition trap.h:68