www.pudn.com > AES.rar > AES.h, change:2008-04-25,size:9458b
// AES.h
# ifndef AES_H
# define AES_H
typedef unsigned char word8;
typedef unsigned int word32;
#define BC 4
#define KC 4
#define ROUNDS 10
//#define C0 0
#define C1 1
#define C2 2
#define C3 3
word8 Logtable[256] =
{
0, 0, 25, 1, 50, 2, 26, 198, 75, 199, 27, 104, 51, 238, 223, 3,
100, 4, 224, 14, 52, 141, 129, 239, 76, 113, 8, 200, 248, 105, 28, 193,
125, 194, 29, 181, 249, 185, 39, 106, 77, 228, 166, 114, 154, 201, 9, 120,
101, 47, 138, 5, 33, 15, 225, 36, 18, 240, 130, 69, 53, 147, 218, 142,
150, 143, 219, 189, 54, 208, 206, 148, 19, 92, 210, 241, 64, 70, 131, 56,
102, 221, 253, 48, 191, 6, 139, 98, 179, 37, 226, 152, 34, 136, 145, 16,
126, 110, 72, 195, 163, 182, 30, 66, 58, 107, 40, 84, 250, 133, 61, 186,
43, 121, 10, 21, 155, 159, 94, 202, 78, 212, 172, 229, 243, 115, 167, 87,
175, 88, 168, 80, 244, 234, 214, 116, 79, 174, 233, 213, 231, 230, 173, 232,
44, 215, 117, 122, 235, 22, 11, 245, 89, 203, 95, 176, 156, 169, 81, 160,
127, 12, 246, 111, 23, 196, 73, 236, 216, 67, 31, 45, 164, 118, 123, 183,
204, 187, 62, 90, 251, 96, 177, 134, 59, 82, 161, 108, 170, 85, 41, 157,
151, 178, 135, 144, 97, 190, 220, 252, 188, 149, 207, 205, 55, 63, 91, 209,
83, 57, 132, 60, 65, 162, 109, 71, 20, 42, 158, 93, 86, 242, 211, 171,
68, 17, 146, 217, 35, 32, 46, 137, 180, 124, 184, 38, 119, 153, 227, 165,
103, 74, 237, 222, 197, 49, 254, 24, 13, 99, 140, 128, 192, 247, 112, 7
};
word8 Alogtable[256] =
{
1, 3, 5, 15, 17, 51, 85, 255, 26, 46, 114, 150, 161, 248, 19, 53,
95, 225, 56, 72, 216, 115, 149, 164, 247, 2, 6, 10, 30, 34, 102, 170,
229, 52, 92, 228, 55, 89, 235, 38, 106, 190, 217, 112, 144, 171, 230, 49,
83, 245, 4, 12, 20, 60, 68, 204, 79, 209, 104, 184, 211, 110, 178, 205,
76, 212, 103, 169, 224, 59, 77, 215, 98, 166, 241, 8, 24, 40, 120, 136,
131, 158, 185, 208, 107, 189, 220, 127, 129, 152, 179, 206, 73, 219, 118, 154,
181, 196, 87, 249, 16, 48, 80, 240, 11, 29, 39, 105, 187, 214, 97, 163,
254, 25, 43, 125, 135, 146, 173, 236, 47, 113, 147, 174, 233, 32, 96, 160,
251, 22, 58, 78, 210, 109, 183, 194, 93, 231, 50, 86, 250, 21, 63, 65,
195, 94, 226, 61, 71, 201, 64, 192, 91, 237, 44, 116, 156, 191, 218, 117,
159, 186, 213, 100, 172, 239, 42, 126, 130, 157, 188, 223, 122, 142, 137, 128,
155, 182, 193, 88, 232, 35, 101, 175, 234, 37, 111, 177, 200, 67, 197, 84,
252, 31, 33, 99, 165, 244, 7, 9, 27, 45, 119, 153, 176, 203, 70, 202,
69, 207, 74, 222, 121, 139, 134, 145, 168, 227, 62, 66, 198, 81, 243, 14,
18, 54, 90, 238, 41, 123, 141, 140, 143, 138, 133, 148, 167, 242, 13, 23,
57, 75, 221, 124, 132, 151, 162, 253, 28, 36, 108, 180, 199, 82, 246, 1
};
word8 S_Table[256] =
{
99, 124, 119, 123, 242, 107, 111, 197, 48, 1, 103, 43, 254, 215, 171, 118,
202, 130, 201, 125, 250, 89, 71, 240, 173, 212, 162, 175, 156, 164, 114, 192,
183, 253, 147, 38, 54, 63, 247, 204, 52, 165, 229, 241, 113, 216, 49, 21,
4, 199, 35, 195, 24, 150, 5, 154, 7, 18, 128, 226, 235, 39, 178, 117,
9, 131, 44, 26, 27, 110, 90, 160, 82, 59, 214, 179, 41, 227, 47, 132,
83, 209, 0, 237, 32, 252, 177, 91, 106, 203, 190, 57, 74, 76, 88, 207,
208, 239, 170, 251, 67, 77, 51, 133, 69, 249, 2, 127, 80, 60, 159, 168,
81, 163, 64, 143, 146, 157, 56, 245, 188, 182, 218, 33, 16, 255, 243, 210,
205, 12, 19, 236, 95, 151, 68, 23, 196, 167, 126, 61, 100, 93, 25, 115,
96, 129, 79, 220, 34, 42, 144, 136, 70, 238, 184, 20, 222, 94, 11, 219,
224, 50, 58, 10, 73, 6, 36, 92, 194, 211, 172, 98, 145, 149, 228, 121,
231, 200, 55, 109, 141, 213, 78, 169, 108, 86, 244, 234, 101, 122, 174, 8,
186, 120, 37, 46, 28, 166, 180, 198, 232, 221, 116, 31, 75, 189, 139, 138,
112, 62, 181, 102, 72, 3, 246, 14, 97, 53, 87, 185, 134, 193, 29, 158,
225, 248, 152, 17, 105, 217, 142, 148, 155, 30, 135, 233, 206, 85, 40, 223,
140, 161, 137, 13, 191, 230, 66, 104, 65, 153, 45, 15, 176, 84, 187, 22
};
word8 SI_Table[256] =
{
82, 9, 106, 213, 48, 54, 165, 56, 191, 64, 163, 158, 129, 243, 215, 251,
124, 227, 57, 130, 155, 47, 255, 135, 52, 142, 67, 68, 196, 222, 233, 203,
84, 123, 148, 50, 166, 194, 35, 61, 238, 76, 149, 11, 66, 250, 195, 78,
8, 46, 161, 102, 40, 217, 36, 178, 118, 91, 162, 73, 109, 139, 209, 37,
114, 248, 246, 100, 134, 104, 152, 22, 212, 164, 92, 204, 93, 101, 182, 146,
108, 112, 72, 80, 253, 237, 185, 218, 94, 21, 70, 87, 167, 141, 157, 132,
144, 216, 171, 0, 140, 188, 211, 10, 247, 228, 88, 5, 184, 179, 69, 6,
208, 44, 30, 143, 202, 63, 15, 2, 193, 175, 189, 3, 1, 19, 138, 107,
58, 145, 17, 65, 79, 103, 220, 234, 151, 242, 207, 206, 240, 180, 230, 115,
150, 172, 116, 34, 231, 173, 53, 133, 226, 249, 55, 232, 28, 117, 223, 110,
71, 241, 26, 113, 29, 41, 197, 137, 111, 183, 98, 14, 170, 24, 190, 27,
252, 86, 62, 75, 198, 210, 121, 32, 154, 219, 192, 254, 120, 205, 90, 244,
31, 221, 168, 51, 136, 7, 199, 49, 177, 18, 16, 89, 39, 128, 236, 95,
96, 81, 127, 169, 25, 181, 74, 13, 45, 229, 122, 159, 147, 201, 156, 239,
160, 224, 59, 77, 174, 42, 245, 176, 200, 235, 187, 60, 131, 83, 153, 97,
23, 43, 4, 126, 186, 119, 214, 38, 225, 105, 20, 99, 85, 33, 12, 125
};
word32 RC[30] =
{
0x00, 0x01,0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8,
0xab, 0x4d, 0x9a, 0x2f, 0x5e, 0xbc, 0x63, 0xc6, 0x97, 0x35, 0x6a, 0xd4, 0xb3,
0x7d,0xfa, 0xef, 0xc5
};
void KeyExpansion (word8 sk[4][KC], word8 rk[ROUNDS+1][4][BC]);
void Encrypt (word8 a[4][BC], word8 rk[ROUNDS+1][4][BC]);
void Decrypt (word8 a[4][BC], word8 rk[ROUNDS+1][4][BC]);
void AddRoundKey (word8 a[4][BC], word8 k[4][BC]);
void Round (word8 a[4][BC], word8 k[4][BC]);
void FinalRound (word8 a[4][BC], word8 k[4][BC]);
void SubBytes (word8 a[4][BC], word8 box[256]);
void ShiftRows (word8 a[4][BC]);
void MixColumns (word8 a[4][BC]);
//
void Convert(word8 a0[4 * BC], word8 a[4][BC])
{
for(int i = 0; i < 4 * BC; i++)
{
a[i % 4][i / 4] = a0[i];
}
}
void AddRoundKey(word8 a[4][BC], word8 k[4][BC])
{
for (int j = 0; j < BC; j++)
{
for (int i = 0; i < 4; i++)
{
a[i][j] ^= k[i][j];
}
}
}
void SubBytes (word8 a[4][BC], word8 box[256])
{
for (int j = 0; j < BC; j++)
{
for (int i = 0; i < 4; i++)
{
a[i][j] = box[a[i][j]];
}
}
}
void CircleLeftMove (word8 x[BC], word8 n)
{
word8 temp[BC];
for (int j = 0; j < BC; j++)
{
temp[j] = x[j];
}
for (int j = 0; j < BC; j++)
{
x[j] = temp[(j + n) % BC];
}
}
void ShiftRows (word8 a[4][BC])
{
CircleLeftMove(a[1], C1);
CircleLeftMove(a[2], C2);
CircleLeftMove(a[3], C3);
}
void InvShiftRows (word8 a[4][BC])
{
CircleLeftMove(a[1], BC -C1);
CircleLeftMove(a[2], BC - C2);
CircleLeftMove(a[3], BC - C3);
}
word8 MulBytes(word8 a, word8 b)
{
if (a && b)
return Alogtable[(Logtable[a] + Logtable[b]) % 255];
else
return 0;
}
void MixColumns (word8 a[4][BC])
{
word8 temp[4];
for (int j = 0; j < BC; j++)
{
for (int i = 0; i < 4; i++)
{
temp[i] = MulBytes(0x02, a[(i + 0) % 4][j]) ^ MulBytes(0x03, a[(i + 1) % 4][j]) ^
MulBytes(0x01, a[(i + 2) % 4][j])^ MulBytes(0x01, a[(i + 3) % 4][j]);
}
for (int i = 0; i < 4; i++)
{
a[i][j] = temp[i];
}
}
}
void InvMixColumns (word8 a[4][BC])
{
word8 temp[4];
for (int j = 0; j < BC; j++)
{
for (int i = 0; i < 4; i++)
{
temp[i] = MulBytes(0x0E, a[(i + 0) % 4][j]) ^ MulBytes(0x0B, a[(i + 1) % 4][j]) ^
MulBytes(0x0D, a[(i + 2) % 4][j])^ MulBytes(0x09, a[(i + 3) % 4][j]);
}
for (int i = 0; i < 4; i++)
{
a[i][j] = temp[i];
}
}
}
void Round(word8 a[4][BC], word8 k[4][BC])
{
SubBytes(a, S_Table);
ShiftRows(a);
MixColumns(a);
AddRoundKey(a, k);
}
void InvRound(word8 a[4][BC], word8 k[4][BC])
{
AddRoundKey(a, k);
InvMixColumns(a);
InvShiftRows(a);
SubBytes(a, SI_Table);
}
void FinalRound(word8 a[4][BC], word8 k[4][BC])
{
SubBytes(a, S_Table);
ShiftRows(a);
//MixColumns(a);
AddRoundKey(a, k);
}
void KeyExpansion (word8 sk[4][KC], word8 rk[ROUNDS + 1][4][BC])
{
word8 w[4][BC * (ROUNDS + 1)];
for (int j = 0; j < KC; j++)
{
for (int i = 0; i < 4; i++)
{
w[i][j] = sk[i][j];
}
}
for (int j = KC; j < BC * (ROUNDS+1); j++)
{
if (j % KC == 0)
{
w[0][j] = w[0][j - KC] ^ S_Table[w[1][j - 1]] ^ RC[j / KC];
for (int i = 1; i < 4; i++)
{
w[i][j] = w[i][j - KC] ^ S_Table[w[(i + 1) % 4][j - 1]];
}
}
else
{
if (KC <= 6)
{
for (int i = 0; i < 4; i++)
{
w[i][j] = w[i][j - KC] ^ w[i][j - 1];
}
}
else
{
if (j % KC == 4)
for (int i = 0; i < 4; i++)
w[i][j] = w[i][j - KC] ^ S_Table[w[i][j - 1]];
else
for (int i = 0; i < 4; i++)
w[i][j] = w[i][j - KC] ^ w[i][j - 1];
}
}
}
// ¸³Öµ¸ørk[ROUNDS + 1][4][BC]
for (int j = 0; j < BC * (ROUNDS+1); j++)
{
for (int i = 0; i < 4; i++)
{
rk[j / BC][i][j % BC] = w[i][j];
}
}
}
void Encrypt (word8 a[4][BC], word8 rk[ROUNDS+1][4][BC])
{
AddRoundKey(a, rk[0]);
for (int i = 1; i < ROUNDS; i++)
Round(a, rk[i]);
FinalRound(a, rk[ROUNDS]);
}
void Decrypt (word8 a[4][BC], word8 rk[ROUNDS+1][4][BC])
{
// FinalRound
AddRoundKey(a, rk[ROUNDS]);
InvShiftRows(a);
SubBytes(a, SI_Table);
for (int i = ROUNDS - 1; i > 0; i--)
InvRound(a, rk[i]);
AddRoundKey(a, rk[0]);
}
# endif