diff options
author | Igor Pavlov <ipavlov@users.sourceforge.net> | 2007-07-24 04:00:00 +0400 |
---|---|---|
committer | Kornel LesiĆski <kornel@geekhood.net> | 2016-05-28 02:15:52 +0300 |
commit | 980e181dcc9d64312a4dddfa58f80770506f27f5 (patch) | |
tree | 4ab20c1b4c7ebfe0f5fbf39ec2ce2cd3022ebf66 /C | |
parent | 7038848692e7049234f223703522681a19db49a5 (diff) |
4.50 beta
Diffstat (limited to 'C')
-rwxr-xr-x | C/7zCrc.c | 2 | ||||
-rwxr-xr-x | C/7zCrc.h | 2 | ||||
-rwxr-xr-x | C/CpuArch.h | 18 | ||||
-rwxr-xr-x | C/Crypto/Aes.c | 259 | ||||
-rwxr-xr-x | C/Crypto/Aes.h | 40 |
5 files changed, 319 insertions, 2 deletions
@@ -5,7 +5,7 @@ #define kCrcPoly 0xEDB88320 UInt32 g_CrcTable[256]; -void MY_FAST_CALL CrcGenerateTable() +void MY_FAST_CALL CrcGenerateTable(void) { UInt32 i; for (i = 0; i < 256; i++) @@ -9,7 +9,7 @@ extern UInt32 g_CrcTable[]; -void MY_FAST_CALL CrcGenerateTable(); +void MY_FAST_CALL CrcGenerateTable(void); #define CRC_INIT_VAL 0xFFFFFFFF #define CRC_GET_DIGEST(crc) ((crc) ^ 0xFFFFFFFF) diff --git a/C/CpuArch.h b/C/CpuArch.h new file mode 100755 index 00000000..26ce8b1d --- /dev/null +++ b/C/CpuArch.h @@ -0,0 +1,18 @@ +/* CpuArch.h */ + +#ifndef __CPUARCH_H +#define __CPUARCH_H + +/* +LITTLE_ENDIAN_UNALIGN means: + 1) CPU is LITTLE_ENDIAN + 2) it's allowed to make unaligned memory accesses +if LITTLE_ENDIAN_UNALIGN is not defined, it means that we don't know +about these properties of platform. +*/ + +#if defined(_M_IX86) || defined(_M_X64) || defined(_M_AMD64) || defined(__i386__) || defined(__x86_64__) +#define LITTLE_ENDIAN_UNALIGN +#endif + +#endif diff --git a/C/Crypto/Aes.c b/C/Crypto/Aes.c new file mode 100755 index 00000000..205edbc8 --- /dev/null +++ b/C/Crypto/Aes.c @@ -0,0 +1,259 @@ +/* Aes.h */ + +#include "Aes.h" +#include "../CpuArch.h" + +UInt32 T[256 * 4]; +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, + 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, + 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, + 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, + 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, + 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, + 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, + 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, + 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, + 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, + 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, + 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, + 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, + 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16}; + +UInt32 D[256 * 4]; +Byte InvS[256]; + +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) + +#define Ui32(a0, a1, a2, a3) ((UInt32)(a0) | ((UInt32)(a1) << 8) | ((UInt32)(a2) << 16) | ((UInt32)(a3) << 24)) + +#define gb0(x) ( (x) & 0xFF) +#define gb1(x) (((x) >> ( 8)) & 0xFF) +#define gb2(x) (((x) >> (16)) & 0xFF) +#define gb3(x) (((x) >> (24)) & 0xFF) + +void MY_FAST_CALL AesGenTables(void) +{ + unsigned i; + for (i = 0; i < 256; i++) + InvS[Sbox[i]] = (Byte)i; + for (i = 0; i < 256; i++) + { + { + UInt32 a1 = Sbox[i]; + UInt32 a2 = xtime(a1); + UInt32 a3 = xtime(a1) ^ 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); + } + { + UInt32 a1 = InvS[i]; + UInt32 a2 = xtime(a1); + UInt32 a4 = xtime(a2); + UInt32 a8 = xtime(a4); + UInt32 a9 = a8 ^ a1; + 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); + } + } +} + +#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); \ + +#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, 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]; + +void MY_FAST_CALL AesSetKeyEncode(CAes *p, const Byte *key, unsigned keySize) +{ + unsigned i, wSize; + UInt32 *w; + keySize /= 4; + p->numRounds2 = keySize / 2 + 3; + + wSize = (p->numRounds2 * 2 + 1) * 4; + w = p->rkey; + + for (i = 0; i < keySize; i++, key += 4) + w[i] = Ui32(key[0], key[1], key[2], key[3]); + + for (; i < wSize; i++) + { + UInt32 t = w[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)]); + else if (keySize > 6 && rem == 4) + t = Ui32(Sbox[gb0(t)], Sbox[gb1(t)], Sbox[gb2(t)], Sbox[gb3(t)]); + w[i] = w[i - keySize] ^ t; + } +} + +void MY_FAST_CALL AesSetKeyDecode(CAes *p, const Byte *key, unsigned keySize) +{ + unsigned i, num; + UInt32 *w; + AesSetKeyEncode(p, key, keySize); + num = p->numRounds2 * 8 - 4; + w = p->rkey + 4; + for (i = 0; i < num; i++) + { + UInt32 r = w[i]; + w[i] = + D[ Sbox[gb0(r)]] ^ + D[0x100 + Sbox[gb1(r)]] ^ + D[0x200 + Sbox[gb2(r)]] ^ + D[0x300 + Sbox[gb3(r)]]; + } +} + +void MY_FAST_CALL AesEncode32(const UInt32 *src, UInt32 *dest, const UInt32 *w, unsigned numRounds2) +{ + UInt32 s[4]; + UInt32 m[4]; + s[0] = src[0] ^ w[0]; + s[1] = src[1] ^ w[1]; + s[2] = src[2] ^ w[2]; + s[3] = src[3] ^ w[3]; + w += 4; + for (;;) + { + HT16(m, s, 0); + if (--numRounds2 == 0) + break; + HT16(s, m, 4); + w += 8; + } + w += 4; + FT4(0); FT4(1); FT4(2); FT4(3); +} + +void MY_FAST_CALL AesDecode32(const UInt32 *src, UInt32 *dest, const UInt32 *w, unsigned numRounds2) +{ + UInt32 s[4]; + UInt32 m[4]; + w += numRounds2 * 8; + s[0] = src[0] ^ w[0]; + s[1] = src[1] ^ w[1]; + s[2] = src[2] ^ w[2]; + s[3] = src[3] ^ w[3]; + for (;;) + { + w -= 8; + HD16(m, s, 4); + if (--numRounds2 == 0) + break; + HD16(s, m, 0); + } + FD4(0); FD4(1); FD4(2); FD4(3); +} + +#ifdef LITTLE_ENDIAN_UNALIGN +#define GetUi32(p) (*(const UInt32 *)(p)) +#define SetUi32(p, d) *(UInt32 *)(p) = d; +#else +#define GetUi32(p) ((p)[0] | ((UInt32)(p)[1] << 8) | ((UInt32)(p)[2] << 16) | ((UInt32)(p)[3] << 24)) +#define SetUi32(p, d) { UInt32 x = (d); (p)[0] = (Byte)x; (p)[1] = (Byte)(x >> 8); \ + (p)[2] = (Byte)(x >> 16); (p)[3] = (Byte)(x >> 24); } +#endif + + +void MY_FAST_CALL AesCbcInit(CAesCbc *cbc, const Byte *iv) +{ + unsigned i; + for (i = 0; i < 4; i++) + cbc->prev[i] = GetUi32(iv + i * 4); +} + +UInt32 MY_FAST_CALL AesCbcEncode(CAesCbc *cbc, Byte *data, UInt32 size) +{ + UInt32 i; + if (size == 0) + return 0; + if (size < AES_BLOCK_SIZE) + return AES_BLOCK_SIZE; + size -= AES_BLOCK_SIZE; + for (i = 0; i <= size; i += AES_BLOCK_SIZE, data += AES_BLOCK_SIZE) + { + cbc->prev[0] ^= GetUi32(data); + cbc->prev[1] ^= GetUi32(data + 4); + cbc->prev[2] ^= GetUi32(data + 8); + cbc->prev[3] ^= GetUi32(data + 12); + + AesEncode32(cbc->prev, cbc->prev, cbc->aes.rkey, cbc->aes.numRounds2); + + SetUi32(data, cbc->prev[0]); + SetUi32(data + 4, cbc->prev[1]); + SetUi32(data + 8, cbc->prev[2]); + SetUi32(data + 12, cbc->prev[3]); + } + return i; +} + +UInt32 MY_FAST_CALL AesCbcDecode(CAesCbc *cbc, Byte *data, UInt32 size) +{ + UInt32 i; + UInt32 in[4], out[4]; + if (size == 0) + return 0; + if (size < AES_BLOCK_SIZE) + return AES_BLOCK_SIZE; + size -= AES_BLOCK_SIZE; + for (i = 0; i <= size; i += AES_BLOCK_SIZE, data += AES_BLOCK_SIZE) + { + in[0] = GetUi32(data); + in[1] = GetUi32(data + 4); + in[2] = GetUi32(data + 8); + in[3] = GetUi32(data + 12); + + AesDecode32(in, out, cbc->aes.rkey, cbc->aes.numRounds2); + + SetUi32(data, cbc->prev[0] ^ out[0]); + SetUi32(data + 4, cbc->prev[1] ^ out[1]); + SetUi32(data + 8, cbc->prev[2] ^ out[2]); + SetUi32(data + 12, cbc->prev[3] ^ out[3]); + + cbc->prev[0] = in[0]; + cbc->prev[1] = in[1]; + cbc->prev[2] = in[2]; + cbc->prev[3] = in[3]; + } + return i; +} diff --git a/C/Crypto/Aes.h b/C/Crypto/Aes.h new file mode 100755 index 00000000..ab51a72c --- /dev/null +++ b/C/Crypto/Aes.h @@ -0,0 +1,40 @@ +/* Aes.h */ + +#ifndef __AES_H +#define __AES_H + +#include "../Types.h" + +#define AES_BLOCK_SIZE 16 + +typedef struct _CAes +{ + unsigned numRounds2; /* = numRounds / 2 */ + UInt32 rkey[(14 + 1) * 4]; +} CAes; + +/* Call AesGenTables one time before other AES functions */ +void MY_FAST_CALL AesGenTables(void); + +/* keySize = 16 or 24 or 32 */ +void MY_FAST_CALL AesSetKeyEncode(CAes *p, const Byte *key, unsigned keySize); +void MY_FAST_CALL AesSetKeyDecode(CAes *p, const Byte *key, unsigned keySize); + +/* +AesEncode32 and AesDecode32 functions work with little-endian words. +src and dest can contain same address +*/ +void MY_FAST_CALL AesEncode32(const UInt32 *src, UInt32 *dest, const UInt32 *w, unsigned numRounds2); +void MY_FAST_CALL AesDecode32(const UInt32 *src, UInt32 *dest, const UInt32 *w, unsigned numRounds2); + +typedef struct _CAesCbc +{ + UInt32 prev[4]; + CAes aes; +} CAesCbc; + +void MY_FAST_CALL AesCbcInit(CAesCbc *cbc, const Byte *iv); /* iv size is AES_BLOCK_SIZE */ +UInt32 MY_FAST_CALL AesCbcDecode(CAesCbc *cbc, Byte *data, UInt32 size); +UInt32 MY_FAST_CALL AesCbcEncode(CAesCbc *cbc, Byte *data, UInt32 size); + +#endif |