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This commit is contained in:
Igor Pavlov
2015-06-15 00:00:00 +00:00
committed by Kornel Lesiński
parent 0713a3ab80
commit 54490d51d5
591 changed files with 34932 additions and 16390 deletions
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29
C/Aes.c
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@@ -1,5 +1,5 @@
/* Aes.c -- AES encryption / decryption
2013-11-12 : Igor Pavlov : Public domain */
2015-02-23 : Igor Pavlov : Public domain */
#include "Precomp.h"
@@ -7,7 +7,7 @@
#include "CpuArch.h"
static UInt32 T[256 * 4];
static Byte Sbox[256] = {
static const Byte Sbox[256] = {
0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
@@ -40,7 +40,7 @@ AES_CODE_FUNC g_AesCtr_Code;
static UInt32 D[256 * 4];
static Byte InvS[256];
static Byte Rcon[11] = { 0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 };
static const Byte Rcon[11] = { 0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 };
#define xtime(x) ((((x) << 1) ^ (((x) & 0x80) != 0 ? 0x1B : 0)) & 0xFF)
@@ -56,6 +56,7 @@ void AesGenTables(void)
unsigned i;
for (i = 0; i < 256; i++)
InvS[Sbox[i]] = (Byte)i;
for (i = 0; i < 256; i++)
{
{
@@ -82,9 +83,11 @@ void AesGenTables(void)
D[0x300 + i] = Ui32(a9, aD, aB, aE);
}
}
g_AesCbc_Encode = AesCbc_Encode;
g_AesCbc_Decode = AesCbc_Decode;
g_AesCtr_Code = AesCtr_Code;
#ifdef MY_CPU_X86_OR_AMD64
if (CPU_Is_Aes_Supported())
{
@@ -95,34 +98,38 @@ void AesGenTables(void)
#endif
}
#define HT(i, x, s) (T + (x << 8))[gb ## x(s[(i + x) & 3])]
#define HT4(m, i, s, p) m[i] = \
HT(i, 0, s) ^ \
HT(i, 1, s) ^ \
HT(i, 2, s) ^ \
HT(i, 3, s) ^ w[p + i]
/* such order (2031) in HT16 is for VC6/K8 speed optimization) */
#define HT16(m, s, p) \
HT4(m, 2, s, p); \
HT4(m, 0, s, p); \
HT4(m, 3, s, p); \
HT4(m, 1, s, p); \
HT4(m, 2, s, p); \
HT4(m, 3, s, p); \
#define FT(i, x) Sbox[gb ## x(m[(i + x) & 3])]
#define FT4(i) dest[i] = Ui32(FT(i, 0), FT(i, 1), FT(i, 2), FT(i, 3)) ^ w[i];
#define HD(i, x, s) (D + (x << 8))[gb ## x(s[(i - x) & 3])]
#define HD4(m, i, s, p) m[i] = \
HD(i, 0, s) ^ \
HD(i, 1, s) ^ \
HD(i, 2, s) ^ \
HD(i, 3, s) ^ w[p + i];
/* such order (0231) in HD16 is for VC6/K8 speed optimization) */
#define HD16(m, s, p) \
HD4(m, 0, s, p); \
HD4(m, 1, s, p); \
HD4(m, 2, s, p); \
HD4(m, 3, s, p); \
HD4(m, 1, s, p); \
#define FD(i, x) InvS[gb ## x(m[(i - x) & 3])]
#define FD4(i) dest[i] = Ui32(FD(i, 0), FD(i, 1), FD(i, 2), FD(i, 3)) ^ w[i];
@@ -169,7 +176,7 @@ void MY_FAST_CALL Aes_SetKey_Dec(UInt32 *w, const Byte *key, unsigned keySize)
/* Aes_Encode and Aes_Decode functions work with little-endian words.
src and dest are pointers to 4 UInt32 words.
arc and dest can point to same block */
src and dest can point to same block */
static void Aes_Encode(const UInt32 *w, UInt32 *dest, const UInt32 *src)
{
@@ -271,13 +278,17 @@ void MY_FAST_CALL AesCtr_Code(UInt32 *p, Byte *data, size_t numBlocks)
UInt32 temp[4];
Byte buf[16];
int i;
if (++p[0] == 0)
p[1]++;
Aes_Encode(p + 4, temp, p);
SetUi32(buf, temp[0]);
SetUi32(buf + 4, temp[1]);
SetUi32(buf + 8, temp[2]);
SetUi32(buf + 12, temp[3]);
for (i = 0; i < 16; i++)
*data++ ^= buf[i];
}