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This commit is contained in:
Igor Pavlov
2017-04-30 00:00:00 +00:00
committed by Kornel
parent 603abd5528
commit 2efa10565a
442 changed files with 15479 additions and 8525 deletions
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67
C/Aes.c
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@@ -1,5 +1,5 @@
/* Aes.c -- AES encryption / decryption
2016-05-21 : Igor Pavlov : Public domain */
2017-01-24 : Igor Pavlov : Public domain */
#include "Precomp.h"
@@ -49,7 +49,13 @@ static const Byte Rcon[11] = { 0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0
#define gb0(x) ( (x) & 0xFF)
#define gb1(x) (((x) >> ( 8)) & 0xFF)
#define gb2(x) (((x) >> (16)) & 0xFF)
#define gb3(x) (((x) >> (24)) & 0xFF)
#define gb3(x) (((x) >> (24)))
#define gb(n, x) gb ## n(x)
#define TT(x) (T + (x << 8))
#define DD(x) (D + (x << 8))
void AesGenTables(void)
{
@@ -63,10 +69,10 @@ void AesGenTables(void)
UInt32 a1 = Sbox[i];
UInt32 a2 = xtime(a1);
UInt32 a3 = a2 ^ a1;
T[ i] = Ui32(a2, a1, a1, a3);
T[0x100 + i] = Ui32(a3, a2, a1, a1);
T[0x200 + i] = Ui32(a1, a3, a2, a1);
T[0x300 + i] = Ui32(a1, a1, a3, a2);
TT(0)[i] = Ui32(a2, a1, a1, a3);
TT(1)[i] = Ui32(a3, a2, a1, a1);
TT(2)[i] = Ui32(a1, a3, a2, a1);
TT(3)[i] = Ui32(a1, a1, a3, a2);
}
{
UInt32 a1 = InvS[i];
@@ -77,10 +83,10 @@ void AesGenTables(void)
UInt32 aB = a8 ^ a2 ^ a1;
UInt32 aD = a8 ^ a4 ^ a1;
UInt32 aE = a8 ^ a4 ^ a2;
D[ i] = Ui32(aE, a9, aD, aB);
D[0x100 + i] = Ui32(aB, aE, a9, aD);
D[0x200 + i] = Ui32(aD, aB, aE, a9);
D[0x300 + i] = Ui32(a9, aD, aB, aE);
DD(0)[i] = Ui32(aE, a9, aD, aB);
DD(1)[i] = Ui32(aB, aE, a9, aD);
DD(2)[i] = Ui32(aD, aB, aE, a9);
DD(3)[i] = Ui32(a9, aD, aB, aE);
}
}
@@ -99,7 +105,7 @@ void AesGenTables(void)
}
#define HT(i, x, s) (T + (x << 8))[gb ## x(s[(i + x) & 3])]
#define HT(i, x, s) TT(x)[gb(x, s[(i + x) & 3])]
#define HT4(m, i, s, p) m[i] = \
HT(i, 0, s) ^ \
@@ -113,11 +119,11 @@ void AesGenTables(void)
HT4(m, 2, s, p); \
HT4(m, 3, s, p); \
#define FT(i, x) Sbox[gb ## x(m[(i + x) & 3])]
#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 HD(i, x, s) DD(x)[gb(x, s[(i - x) & 3])]
#define HD4(m, i, s, p) m[i] = \
HD(i, 0, s) ^ \
@@ -131,7 +137,7 @@ void AesGenTables(void)
HD4(m, 2, s, p); \
HD4(m, 3, s, p); \
#define FD(i, x) InvS[gb ## x(m[(i - x) & 3])]
#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];
void MY_FAST_CALL Aes_SetKey_Enc(UInt32 *w, const Byte *key, unsigned keySize)
@@ -147,7 +153,7 @@ void MY_FAST_CALL Aes_SetKey_Enc(UInt32 *w, const Byte *key, unsigned keySize)
for (; i < wSize; i++)
{
UInt32 t = w[i - 1];
UInt32 t = w[(size_t)i - 1];
unsigned rem = i % keySize;
if (rem == 0)
t = Ui32(Sbox[gb1(t)] ^ Rcon[i / keySize], Sbox[gb2(t)], Sbox[gb3(t)], Sbox[gb0(t)]);
@@ -167,10 +173,10 @@ void MY_FAST_CALL Aes_SetKey_Dec(UInt32 *w, const Byte *key, unsigned keySize)
{
UInt32 r = w[i];
w[i] =
D[ (unsigned)Sbox[gb0(r)]] ^
D[0x100 + (unsigned)Sbox[gb1(r)]] ^
D[0x200 + (unsigned)Sbox[gb2(r)]] ^
D[0x300 + (unsigned)Sbox[gb3(r)]];
DD(0)[Sbox[gb0(r)]] ^
DD(1)[Sbox[gb1(r)]] ^
DD(2)[Sbox[gb2(r)]] ^
DD(3)[Sbox[gb3(r)]];
}
}
@@ -276,20 +282,25 @@ void MY_FAST_CALL AesCtr_Code(UInt32 *p, Byte *data, size_t numBlocks)
for (; numBlocks != 0; numBlocks--)
{
UInt32 temp[4];
Byte buf[16];
int i;
unsigned 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];
for (i = 0; i < 4; i++, data += 4)
{
UInt32 t = temp[i];
#ifdef MY_CPU_LE_UNALIGN
*((UInt32 *)data) ^= t;
#else
data[0] ^= (t & 0xFF);
data[1] ^= ((t >> 8) & 0xFF);
data[2] ^= ((t >> 16) & 0xFF);
data[3] ^= ((t >> 24));
#endif
}
}
}