[pcsx_rearmed.git] / deps / lzma-16.04 / C / Aes.c

/* Aes.c -- AES encryption / decryption\r
2016-05-21 : Igor Pavlov : Public domain */\r
\r
#include "Precomp.h"\r
\r
#include "Aes.h"\r
#include "CpuArch.h"\r
\r
static UInt32 T[256 * 4];\r
static const Byte Sbox[256] = {\r
  0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,\r
  0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,\r
  0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,\r
  0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,\r
  0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,\r
  0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,\r
  0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,\r
  0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,\r
  0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,\r
  0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,\r
  0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,\r
  0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,\r
  0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,\r
  0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,\r
  0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,\r
  0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16};\r
\r
void MY_FAST_CALL AesCbc_Encode(UInt32 *ivAes, Byte *data, size_t numBlocks);\r
void MY_FAST_CALL AesCbc_Decode(UInt32 *ivAes, Byte *data, size_t numBlocks);\r
void MY_FAST_CALL AesCtr_Code(UInt32 *ivAes, Byte *data, size_t numBlocks);\r
\r
void MY_FAST_CALL AesCbc_Encode_Intel(UInt32 *ivAes, Byte *data, size_t numBlocks);\r
void MY_FAST_CALL AesCbc_Decode_Intel(UInt32 *ivAes, Byte *data, size_t numBlocks);\r
void MY_FAST_CALL AesCtr_Code_Intel(UInt32 *ivAes, Byte *data, size_t numBlocks);\r
\r
AES_CODE_FUNC g_AesCbc_Encode;\r
AES_CODE_FUNC g_AesCbc_Decode;\r
AES_CODE_FUNC g_AesCtr_Code;\r
\r
static UInt32 D[256 * 4];\r
static Byte InvS[256];\r
\r
static const Byte Rcon[11] = { 0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 };\r
\r
#define xtime(x) ((((x) << 1) ^ (((x) & 0x80) != 0 ? 0x1B : 0)) & 0xFF)\r
\r
#define Ui32(a0, a1, a2, a3) ((UInt32)(a0) | ((UInt32)(a1) << 8) | ((UInt32)(a2) << 16) | ((UInt32)(a3) << 24))\r
\r
#define gb0(x) ( (x)          & 0xFF)\r
#define gb1(x) (((x) >> ( 8)) & 0xFF)\r
#define gb2(x) (((x) >> (16)) & 0xFF)\r
#define gb3(x) (((x) >> (24)) & 0xFF)\r
\r
void AesGenTables(void)\r
{\r
  unsigned i;\r
  for (i = 0; i < 256; i++)\r
    InvS[Sbox[i]] = (Byte)i;\r
  \r
  for (i = 0; i < 256; i++)\r
  {\r
    {\r
      UInt32 a1 = Sbox[i];\r
      UInt32 a2 = xtime(a1);\r
      UInt32 a3 = a2 ^ a1;\r
      T[        i] = Ui32(a2, a1, a1, a3);\r
      T[0x100 + i] = Ui32(a3, a2, a1, a1);\r
      T[0x200 + i] = Ui32(a1, a3, a2, a1);\r
      T[0x300 + i] = Ui32(a1, a1, a3, a2);\r
    }\r
    {\r
      UInt32 a1 = InvS[i];\r
      UInt32 a2 = xtime(a1);\r
      UInt32 a4 = xtime(a2);\r
      UInt32 a8 = xtime(a4);\r
      UInt32 a9 = a8 ^ a1;\r
      UInt32 aB = a8 ^ a2 ^ a1;\r
      UInt32 aD = a8 ^ a4 ^ a1;\r
      UInt32 aE = a8 ^ a4 ^ a2;\r
      D[        i] = Ui32(aE, a9, aD, aB);\r
      D[0x100 + i] = Ui32(aB, aE, a9, aD);\r
      D[0x200 + i] = Ui32(aD, aB, aE, a9);\r
      D[0x300 + i] = Ui32(a9, aD, aB, aE);\r
    }\r
  }\r
  \r
  g_AesCbc_Encode = AesCbc_Encode;\r
  g_AesCbc_Decode = AesCbc_Decode;\r
  g_AesCtr_Code = AesCtr_Code;\r
  \r
  #ifdef MY_CPU_X86_OR_AMD64\r
  if (CPU_Is_Aes_Supported())\r
  {\r
    g_AesCbc_Encode = AesCbc_Encode_Intel;\r
    g_AesCbc_Decode = AesCbc_Decode_Intel;\r
    g_AesCtr_Code = AesCtr_Code_Intel;\r
  }\r
  #endif\r
}\r
\r
\r
#define HT(i, x, s) (T + (x << 8))[gb ## x(s[(i + x) & 3])]\r
\r
#define HT4(m, i, s, p) m[i] = \\r
    HT(i, 0, s) ^ \\r
    HT(i, 1, s) ^ \\r
    HT(i, 2, s) ^ \\r
    HT(i, 3, s) ^ w[p + i]\r
\r
#define HT16(m, s, p) \\r
    HT4(m, 0, s, p); \\r
    HT4(m, 1, s, p); \\r
    HT4(m, 2, s, p); \\r
    HT4(m, 3, s, p); \\r
\r
#define FT(i, x) Sbox[gb ## x(m[(i + x) & 3])]\r
#define FT4(i) dest[i] = Ui32(FT(i, 0), FT(i, 1), FT(i, 2), FT(i, 3)) ^ w[i];\r
\r
\r
#define HD(i, x, s) (D + (x << 8))[gb ## x(s[(i - x) & 3])]\r
\r
#define HD4(m, i, s, p) m[i] = \\r
    HD(i, 0, s) ^ \\r
    HD(i, 1, s) ^ \\r
    HD(i, 2, s) ^ \\r
    HD(i, 3, s) ^ w[p + i];\r
\r
#define HD16(m, s, p) \\r
    HD4(m, 0, s, p); \\r
    HD4(m, 1, s, p); \\r
    HD4(m, 2, s, p); \\r
    HD4(m, 3, s, p); \\r
\r
#define FD(i, x) InvS[gb ## x(m[(i - x) & 3])]\r
#define FD4(i) dest[i] = Ui32(FD(i, 0), FD(i, 1), FD(i, 2), FD(i, 3)) ^ w[i];\r
\r
void MY_FAST_CALL Aes_SetKey_Enc(UInt32 *w, const Byte *key, unsigned keySize)\r
{\r
  unsigned i, wSize;\r
  wSize = keySize + 28;\r
  keySize /= 4;\r
  w[0] = ((UInt32)keySize / 2) + 3;\r
  w += 4;\r
\r
  for (i = 0; i < keySize; i++, key += 4)\r
    w[i] = GetUi32(key);\r
\r
  for (; i < wSize; i++)\r
  {\r
    UInt32 t = w[i - 1];\r
    unsigned rem = i % keySize;\r
    if (rem == 0)\r
      t = Ui32(Sbox[gb1(t)] ^ Rcon[i / keySize], Sbox[gb2(t)], Sbox[gb3(t)], Sbox[gb0(t)]);\r
    else if (keySize > 6 && rem == 4)\r
      t = Ui32(Sbox[gb0(t)], Sbox[gb1(t)], Sbox[gb2(t)], Sbox[gb3(t)]);\r
    w[i] = w[i - keySize] ^ t;\r
  }\r
}\r
\r
void MY_FAST_CALL Aes_SetKey_Dec(UInt32 *w, const Byte *key, unsigned keySize)\r
{\r
  unsigned i, num;\r
  Aes_SetKey_Enc(w, key, keySize);\r
  num = keySize + 20;\r
  w += 8;\r
  for (i = 0; i < num; i++)\r
  {\r
    UInt32 r = w[i];\r
    w[i] =\r
      D[        (unsigned)Sbox[gb0(r)]] ^\r
      D[0x100 + (unsigned)Sbox[gb1(r)]] ^\r
      D[0x200 + (unsigned)Sbox[gb2(r)]] ^\r
      D[0x300 + (unsigned)Sbox[gb3(r)]];\r
  }\r
}\r
\r
/* Aes_Encode and Aes_Decode functions work with little-endian words.\r
  src and dest are pointers to 4 UInt32 words.\r
  src and dest can point to same block */\r
\r
static void Aes_Encode(const UInt32 *w, UInt32 *dest, const UInt32 *src)\r
{\r
  UInt32 s[4];\r
  UInt32 m[4];\r
  UInt32 numRounds2 = w[0];\r
  w += 4;\r
  s[0] = src[0] ^ w[0];\r
  s[1] = src[1] ^ w[1];\r
  s[2] = src[2] ^ w[2];\r
  s[3] = src[3] ^ w[3];\r
  w += 4;\r
  for (;;)\r
  {\r
    HT16(m, s, 0);\r
    if (--numRounds2 == 0)\r
      break;\r
    HT16(s, m, 4);\r
    w += 8;\r
  }\r
  w += 4;\r
  FT4(0); FT4(1); FT4(2); FT4(3);\r
}\r
\r
static void Aes_Decode(const UInt32 *w, UInt32 *dest, const UInt32 *src)\r
{\r
  UInt32 s[4];\r
  UInt32 m[4];\r
  UInt32 numRounds2 = w[0];\r
  w += 4 + numRounds2 * 8;\r
  s[0] = src[0] ^ w[0];\r
  s[1] = src[1] ^ w[1];\r
  s[2] = src[2] ^ w[2];\r
  s[3] = src[3] ^ w[3];\r
  for (;;)\r
  {\r
    w -= 8;\r
    HD16(m, s, 4);\r
    if (--numRounds2 == 0)\r
      break;\r
    HD16(s, m, 0);\r
  }\r
  FD4(0); FD4(1); FD4(2); FD4(3);\r
}\r
\r
void AesCbc_Init(UInt32 *p, const Byte *iv)\r
{\r
  unsigned i;\r
  for (i = 0; i < 4; i++)\r
    p[i] = GetUi32(iv + i * 4);\r
}\r
\r
void MY_FAST_CALL AesCbc_Encode(UInt32 *p, Byte *data, size_t numBlocks)\r
{\r
  for (; numBlocks != 0; numBlocks--, data += AES_BLOCK_SIZE)\r
  {\r
    p[0] ^= GetUi32(data);\r
    p[1] ^= GetUi32(data + 4);\r
    p[2] ^= GetUi32(data + 8);\r
    p[3] ^= GetUi32(data + 12);\r
    \r
    Aes_Encode(p + 4, p, p);\r
    \r
    SetUi32(data,      p[0]);\r
    SetUi32(data + 4,  p[1]);\r
    SetUi32(data + 8,  p[2]);\r
    SetUi32(data + 12, p[3]);\r
  }\r
}\r
\r
void MY_FAST_CALL AesCbc_Decode(UInt32 *p, Byte *data, size_t numBlocks)\r
{\r
  UInt32 in[4], out[4];\r
  for (; numBlocks != 0; numBlocks--, data += AES_BLOCK_SIZE)\r
  {\r
    in[0] = GetUi32(data);\r
    in[1] = GetUi32(data + 4);\r
    in[2] = GetUi32(data + 8);\r
    in[3] = GetUi32(data + 12);\r
\r
    Aes_Decode(p + 4, out, in);\r
\r
    SetUi32(data,      p[0] ^ out[0]);\r
    SetUi32(data + 4,  p[1] ^ out[1]);\r
    SetUi32(data + 8,  p[2] ^ out[2]);\r
    SetUi32(data + 12, p[3] ^ out[3]);\r
    \r
    p[0] = in[0];\r
    p[1] = in[1];\r
    p[2] = in[2];\r
    p[3] = in[3];\r
  }\r
}\r
\r
void MY_FAST_CALL AesCtr_Code(UInt32 *p, Byte *data, size_t numBlocks)\r
{\r
  for (; numBlocks != 0; numBlocks--)\r
  {\r
    UInt32 temp[4];\r
    Byte buf[16];\r
    int i;\r
\r
    if (++p[0] == 0)\r
      p[1]++;\r
    \r
    Aes_Encode(p + 4, temp, p);\r
    \r
    SetUi32(buf,      temp[0]);\r
    SetUi32(buf + 4,  temp[1]);\r
    SetUi32(buf + 8,  temp[2]);\r
    SetUi32(buf + 12, temp[3]);\r
    \r
    for (i = 0; i < 16; i++)\r
      *data++ ^= buf[i];\r
  }\r
}\r
Commit	Line	Data
ce188d4d	1	/* Aes.c -- AES encryption / decryption\r
	2	2016-05-21 : Igor Pavlov : Public domain */\r
	3	\r
	4	#include "Precomp.h"\r
	5	\r
	6	#include "Aes.h"\r
	7	#include "CpuArch.h"\r
	8	\r
	9	static UInt32 T[256 * 4];\r
	10	static const Byte Sbox[256] = {\r
	11	0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,\r
	12	0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,\r
	13	0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,\r
	14	0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,\r
	15	0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,\r
	16	0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,\r
	17	0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,\r
	18	0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,\r
	19	0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,\r
	20	0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,\r
	21	0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,\r
	22	0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,\r
	23	0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,\r
	24	0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,\r
	25	0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,\r
	26	0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16};\r
	27	\r
	28	void MY_FAST_CALL AesCbc_Encode(UInt32 ivAes, Byte data, size_t numBlocks);\r
	29	void MY_FAST_CALL AesCbc_Decode(UInt32 ivAes, Byte data, size_t numBlocks);\r
	30	void MY_FAST_CALL AesCtr_Code(UInt32 ivAes, Byte data, size_t numBlocks);\r
	31	\r
	32	void MY_FAST_CALL AesCbc_Encode_Intel(UInt32 ivAes, Byte data, size_t numBlocks);\r
	33	void MY_FAST_CALL AesCbc_Decode_Intel(UInt32 ivAes, Byte data, size_t numBlocks);\r
	34	void MY_FAST_CALL AesCtr_Code_Intel(UInt32 ivAes, Byte data, size_t numBlocks);\r
	35	\r
	36	AES_CODE_FUNC g_AesCbc_Encode;\r
	37	AES_CODE_FUNC g_AesCbc_Decode;\r
	38	AES_CODE_FUNC g_AesCtr_Code;\r
	39	\r
	40	static UInt32 D[256 * 4];\r
	41	static Byte InvS[256];\r
	42	\r
	43	static const Byte Rcon[11] = { 0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 };\r
	44	\r
	45	#define xtime(x) ((((x) << 1) ^ (((x) & 0x80) != 0 ? 0x1B : 0)) & 0xFF)\r
	46	\r
	47	#define Ui32(a0, a1, a2, a3) ((UInt32)(a0) \| ((UInt32)(a1) << 8) \| ((UInt32)(a2) << 16) \| ((UInt32)(a3) << 24))\r
	48	\r
	49	#define gb0(x) ( (x) & 0xFF)\r
	50	#define gb1(x) (((x) >> ( 8)) & 0xFF)\r
	51	#define gb2(x) (((x) >> (16)) & 0xFF)\r
	52	#define gb3(x) (((x) >> (24)) & 0xFF)\r
	53	\r
	54	void AesGenTables(void)\r
	55	{\r
	56	unsigned i;\r
	57	for (i = 0; i < 256; i++)\r
	58	InvS[Sbox[i]] = (Byte)i;\r
	59	\r
	60	for (i = 0; i < 256; i++)\r
	61	{\r
	62	{\r
	63	UInt32 a1 = Sbox[i];\r
	64	UInt32 a2 = xtime(a1);\r
65	UInt32 a3 = a2 ^ a1;\r
66	T[ i] = Ui32(a2, a1, a1, a3);\r
67	T[0x100 + i] = Ui32(a3, a2, a1, a1);\r
68	T[0x200 + i] = Ui32(a1, a3, a2, a1);\r
69	T[0x300 + i] = Ui32(a1, a1, a3, a2);\r
70	}\r
71	{\r
72	UInt32 a1 = InvS[i];\r
73	UInt32 a2 = xtime(a1);\r
74	UInt32 a4 = xtime(a2);\r
75	UInt32 a8 = xtime(a4);\r
76	UInt32 a9 = a8 ^ a1;\r
77	UInt32 aB = a8 ^ a2 ^ a1;\r
78	UInt32 aD = a8 ^ a4 ^ a1;\r
79	UInt32 aE = a8 ^ a4 ^ a2;\r
80	D[ i] = Ui32(aE, a9, aD, aB);\r
81	D[0x100 + i] = Ui32(aB, aE, a9, aD);\r
82	D[0x200 + i] = Ui32(aD, aB, aE, a9);\r
83	D[0x300 + i] = Ui32(a9, aD, aB, aE);\r
84	}\r
85	}\r
86	\r
87	g_AesCbc_Encode = AesCbc_Encode;\r
88	g_AesCbc_Decode = AesCbc_Decode;\r
89	g_AesCtr_Code = AesCtr_Code;\r
90	\r
91	#ifdef MY_CPU_X86_OR_AMD64\r
92	if (CPU_Is_Aes_Supported())\r
93	{\r
94	g_AesCbc_Encode = AesCbc_Encode_Intel;\r
95	g_AesCbc_Decode = AesCbc_Decode_Intel;\r
96	g_AesCtr_Code = AesCtr_Code_Intel;\r
97	}\r
98	#endif\r
99	}\r
100	\r
101	\r
102	#define HT(i, x, s) (T + (x << 8))[gb ## x(s[(i + x) & 3])]\r
103	\r
104	#define HT4(m, i, s, p) m[i] = \\r
105	HT(i, 0, s) ^ \\r
106	HT(i, 1, s) ^ \\r
107	HT(i, 2, s) ^ \\r
108	HT(i, 3, s) ^ w[p + i]\r
109	\r
110	#define HT16(m, s, p) \\r
111	HT4(m, 0, s, p); \\r
112	HT4(m, 1, s, p); \\r
113	HT4(m, 2, s, p); \\r
114	HT4(m, 3, s, p); \\r
115	\r
116	#define FT(i, x) Sbox[gb ## x(m[(i + x) & 3])]\r
117	#define FT4(i) dest[i] = Ui32(FT(i, 0), FT(i, 1), FT(i, 2), FT(i, 3)) ^ w[i];\r
118	\r
119	\r
120	#define HD(i, x, s) (D + (x << 8))[gb ## x(s[(i - x) & 3])]\r
121	\r
122	#define HD4(m, i, s, p) m[i] = \\r
123	HD(i, 0, s) ^ \\r
124	HD(i, 1, s) ^ \\r
125	HD(i, 2, s) ^ \\r
126	HD(i, 3, s) ^ w[p + i];\r
127	\r
128	#define HD16(m, s, p) \\r
129	HD4(m, 0, s, p); \\r
130	HD4(m, 1, s, p); \\r
131	HD4(m, 2, s, p); \\r
132	HD4(m, 3, s, p); \\r
133	\r
134	#define FD(i, x) InvS[gb ## x(m[(i - x) & 3])]\r
135	#define FD4(i) dest[i] = Ui32(FD(i, 0), FD(i, 1), FD(i, 2), FD(i, 3)) ^ w[i];\r
136	\r
137	void MY_FAST_CALL Aes_SetKey_Enc(UInt32 w, const Byte key, unsigned keySize)\r
138	{\r
139	unsigned i, wSize;\r
140	wSize = keySize + 28;\r
141	keySize /= 4;\r
142	w[0] = ((UInt32)keySize / 2) + 3;\r
143	w += 4;\r
144	\r
145	for (i = 0; i < keySize; i++, key += 4)\r
146	w[i] = GetUi32(key);\r
147	\r
148	for (; i < wSize; i++)\r
149	{\r
150	UInt32 t = w[i - 1];\r
151	unsigned rem = i % keySize;\r
152	if (rem == 0)\r
153	t = Ui32(Sbox[gb1(t)] ^ Rcon[i / keySize], Sbox[gb2(t)], Sbox[gb3(t)], Sbox[gb0(t)]);\r
154	else if (keySize > 6 && rem == 4)\r
155	t = Ui32(Sbox[gb0(t)], Sbox[gb1(t)], Sbox[gb2(t)], Sbox[gb3(t)]);\r
156	w[i] = w[i - keySize] ^ t;\r
157	}\r
158	}\r
159	\r
160	void MY_FAST_CALL Aes_SetKey_Dec(UInt32 w, const Byte key, unsigned keySize)\r
161	{\r
162	unsigned i, num;\r
163	Aes_SetKey_Enc(w, key, keySize);\r
164	num = keySize + 20;\r
165	w += 8;\r
166	for (i = 0; i < num; i++)\r
167	{\r
168	UInt32 r = w[i];\r
169	w[i] =\r
170	D[ (unsigned)Sbox[gb0(r)]] ^\r
171	D[0x100 + (unsigned)Sbox[gb1(r)]] ^\r
172	D[0x200 + (unsigned)Sbox[gb2(r)]] ^\r
173	D[0x300 + (unsigned)Sbox[gb3(r)]];\r
174	}\r
175	}\r
176	\r
177	/* Aes_Encode and Aes_Decode functions work with little-endian words.\r
178	src and dest are pointers to 4 UInt32 words.\r
179	src and dest can point to same block */\r
180	\r
181	static void Aes_Encode(const UInt32 w, UInt32 dest, const UInt32 *src)\r
182	{\r
183	UInt32 s[4];\r
184	UInt32 m[4];\r
185	UInt32 numRounds2 = w[0];\r
186	w += 4;\r
187	s[0] = src[0] ^ w[0];\r
188	s[1] = src[1] ^ w[1];\r
189	s[2] = src[2] ^ w[2];\r
190	s[3] = src[3] ^ w[3];\r
191	w += 4;\r
192	for (;;)\r
193	{\r
194	HT16(m, s, 0);\r
195	if (--numRounds2 == 0)\r
196	break;\r
197	HT16(s, m, 4);\r
198	w += 8;\r
199	}\r
200	w += 4;\r
201	FT4(0); FT4(1); FT4(2); FT4(3);\r
202	}\r
203	\r
204	static void Aes_Decode(const UInt32 w, UInt32 dest, const UInt32 *src)\r
205	{\r
206	UInt32 s[4];\r
207	UInt32 m[4];\r
208	UInt32 numRounds2 = w[0];\r
209	w += 4 + numRounds2 * 8;\r
210	s[0] = src[0] ^ w[0];\r
211	s[1] = src[1] ^ w[1];\r
212	s[2] = src[2] ^ w[2];\r
213	s[3] = src[3] ^ w[3];\r
214	for (;;)\r
215	{\r
216	w -= 8;\r
217	HD16(m, s, 4);\r
218	if (--numRounds2 == 0)\r
219	break;\r
220	HD16(s, m, 0);\r
221	}\r
222	FD4(0); FD4(1); FD4(2); FD4(3);\r
223	}\r
224	\r
225	void AesCbc_Init(UInt32 p, const Byte iv)\r
226	{\r
227	unsigned i;\r
228	for (i = 0; i < 4; i++)\r
229	p[i] = GetUi32(iv + i * 4);\r
230	}\r
231	\r
232	void MY_FAST_CALL AesCbc_Encode(UInt32 p, Byte data, size_t numBlocks)\r
233	{\r
234	for (; numBlocks != 0; numBlocks--, data += AES_BLOCK_SIZE)\r
235	{\r
236	p[0] ^= GetUi32(data);\r
237	p[1] ^= GetUi32(data + 4);\r
238	p[2] ^= GetUi32(data + 8);\r
239	p[3] ^= GetUi32(data + 12);\r
240	\r
241	Aes_Encode(p + 4, p, p);\r
242	\r
243	SetUi32(data, p[0]);\r
244	SetUi32(data + 4, p[1]);\r
245	SetUi32(data + 8, p[2]);\r
246	SetUi32(data + 12, p[3]);\r
247	}\r
248	}\r
249	\r
250	void MY_FAST_CALL AesCbc_Decode(UInt32 p, Byte data, size_t numBlocks)\r
251	{\r
252	UInt32 in[4], out[4];\r
253	for (; numBlocks != 0; numBlocks--, data += AES_BLOCK_SIZE)\r
254	{\r
255	in[0] = GetUi32(data);\r
256	in[1] = GetUi32(data + 4);\r
257	in[2] = GetUi32(data + 8);\r
258	in[3] = GetUi32(data + 12);\r
259	\r
260	Aes_Decode(p + 4, out, in);\r
261	\r
262	SetUi32(data, p[0] ^ out[0]);\r
263	SetUi32(data + 4, p[1] ^ out[1]);\r
264	SetUi32(data + 8, p[2] ^ out[2]);\r
265	SetUi32(data + 12, p[3] ^ out[3]);\r
266	\r
267	p[0] = in[0];\r
268	p[1] = in[1];\r
269	p[2] = in[2];\r
270	p[3] = in[3];\r
271	}\r
272	}\r
273	\r
274	void MY_FAST_CALL AesCtr_Code(UInt32 p, Byte data, size_t numBlocks)\r
275	{\r
276	for (; numBlocks != 0; numBlocks--)\r
277	{\r
278	UInt32 temp[4];\r
279	Byte buf[16];\r
280	int i;\r
281	\r
282	if (++p[0] == 0)\r
283	p[1]++;\r
284	\r
285	Aes_Encode(p + 4, temp, p);\r
286	\r
287	SetUi32(buf, temp[0]);\r
288	SetUi32(buf + 4, temp[1]);\r
289	SetUi32(buf + 8, temp[2]);\r
290	SetUi32(buf + 12, temp[3]);\r
291	\r
292	for (i = 0; i < 16; i++)\r
293	*data++ ^= buf[i];\r
294	}\r
295	}\r