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SASC
DVBSoftCAM
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SASC
DVBSoftCAM
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Classes | |
| struct | aes_key_st |
Defines | |
| #define | AES_ENCRYPT 1 |
| #define | AES_DECRYPT 0 |
| #define | AES_MAXNR 14 |
| #define | AES_BLOCK_SIZE 16 |
| #define | GETU32(pt) (((u32)(pt)[0] << 24) ^ ((u32)(pt)[1] << 16) ^ ((u32)(pt)[2] << 8) ^ ((u32)(pt)[3])) |
| #define | PUTU32(ct, st) { (ct)[0] = (u8)((st) >> 24); (ct)[1] = (u8)((st) >> 16); (ct)[2] = (u8)((st) >> 8); (ct)[3] = (u8)(st); } |
| #define | MAXKC (256/32) |
| #define | MAXKB (256/8) |
| #define | MAXNR 14 |
Typedefs | |
| typedef unsigned long | u32 |
| typedef unsigned short | u16 |
| typedef unsigned char | u8 |
| typedef struct aes_key_st | AES_KEY |
Functions | |
| const char * | AES_options (void) |
| int | AES_set_encrypt_key (const unsigned char *userKey, const int bits, AES_KEY *key) |
| int | AES_set_decrypt_key (const unsigned char *userKey, const int bits, AES_KEY *key) |
| void | AES_encrypt (const unsigned char *in, unsigned char *out, const AES_KEY *key) |
| void | AES_decrypt (const unsigned char *in, unsigned char *out, const AES_KEY *key) |
| void | AES_ecb_encrypt (const unsigned char *in, unsigned char *out, const AES_KEY *key, const int enc) |
| void | AES_cbc_encrypt (const unsigned char *in, unsigned char *out, const unsigned long length, const AES_KEY *key, unsigned char *ivec, const int enc) |
| void | AES_cfb128_encrypt (const unsigned char *in, unsigned char *out, const unsigned long length, const AES_KEY *key, unsigned char *ivec, int *num, const int enc) |
| void | AES_ofb128_encrypt (const unsigned char *in, unsigned char *out, const unsigned long length, const AES_KEY *key, unsigned char *ivec, int *num) |
| void | AES_ctr128_encrypt (const unsigned char *in, unsigned char *out, const unsigned long length, const AES_KEY *key, unsigned char ivec[AES_BLOCK_SIZE], unsigned char ecount_buf[AES_BLOCK_SIZE], unsigned int *num) |
| typedef struct aes_key_st AES_KEY |
| void AES_cbc_encrypt | ( | const unsigned char * | in, |
| unsigned char * | out, | ||
| const unsigned long | length, | ||
| const AES_KEY * | key, | ||
| unsigned char * | ivec, | ||
| const int | enc | ||
| ) |
Definition at line 1208 of file aes_core.c.
References AES_BLOCK_SIZE, AES_decrypt(), AES_DECRYPT, AES_encrypt(), and AES_ENCRYPT.
{
unsigned long n;
unsigned long len = length;
unsigned char tmp[AES_BLOCK_SIZE];
assert(in && out && key && ivec);
assert((AES_ENCRYPT == enc)||(AES_DECRYPT == enc));
if (AES_ENCRYPT == enc) {
while (len >= AES_BLOCK_SIZE) {
for(n=0; n < AES_BLOCK_SIZE; ++n)
tmp[n] = in[n] ^ ivec[n];
AES_encrypt(tmp, out, key);
memcpy(ivec, out, AES_BLOCK_SIZE);
len -= AES_BLOCK_SIZE;
in += AES_BLOCK_SIZE;
out += AES_BLOCK_SIZE;
}
if (len) {
for(n=0; n < len; ++n)
tmp[n] = in[n] ^ ivec[n];
for(n=len; n < AES_BLOCK_SIZE; ++n)
tmp[n] = ivec[n];
AES_encrypt(tmp, tmp, key);
memcpy(out, tmp, AES_BLOCK_SIZE);
memcpy(ivec, tmp, AES_BLOCK_SIZE);
}
} else {
while (len >= AES_BLOCK_SIZE) {
memcpy(tmp, in, AES_BLOCK_SIZE);
AES_decrypt(in, out, key);
for(n=0; n < AES_BLOCK_SIZE; ++n)
out[n] ^= ivec[n];
memcpy(ivec, tmp, AES_BLOCK_SIZE);
len -= AES_BLOCK_SIZE;
in += AES_BLOCK_SIZE;
out += AES_BLOCK_SIZE;
}
if (len) {
memcpy(tmp, in, AES_BLOCK_SIZE);
AES_decrypt(tmp, tmp, key);
for(n=0; n < len; ++n)
out[n] ^= ivec[n];
memcpy(ivec, tmp, AES_BLOCK_SIZE);
}
}
}
| void AES_cfb128_encrypt | ( | const unsigned char * | in, |
| unsigned char * | out, | ||
| const unsigned long | length, | ||
| const AES_KEY * | key, | ||
| unsigned char * | ivec, | ||
| int * | num, | ||
| const int | enc | ||
| ) |
Definition at line 1259 of file aes_core.c.
References AES_BLOCK_SIZE, and AES_encrypt().
{
unsigned int n;
unsigned long l = length;
unsigned char c;
assert(in && out && key && ivec && num);
n = *num;
if (enc) {
while (l--) {
if (n == 0) {
AES_encrypt(ivec, ivec, key);
}
ivec[n] = *(out++) = *(in++) ^ ivec[n];
n = (n+1) % AES_BLOCK_SIZE;
}
} else {
while (l--) {
if (n == 0) {
AES_encrypt(ivec, ivec, key);
}
c = *(in);
*(out++) = *(in++) ^ ivec[n];
ivec[n] = c;
n = (n+1) % AES_BLOCK_SIZE;
}
}
*num=n;
}
| void AES_ctr128_encrypt | ( | const unsigned char * | in, |
| unsigned char * | out, | ||
| const unsigned long | length, | ||
| const AES_KEY * | key, | ||
| unsigned char | ivec[AES_BLOCK_SIZE], | ||
| unsigned char | ecount_buf[AES_BLOCK_SIZE], | ||
| unsigned int * | num | ||
| ) |
Definition at line 1356 of file aes_core.c.
References AES_ctr128_inc(), and AES_encrypt().
{
unsigned int n;
unsigned long l=length;
// assert(in && out && key && counter && num);
assert(in && out && key && num);
assert(*num < AES_BLOCK_SIZE);
n = *num;
while (l--) {
if (n == 0) {
AES_encrypt(ivec, ecount_buf, key);
AES_ctr128_inc(ivec);
}
*(out++) = *(in++) ^ ecount_buf[n];
n = (n+1) % AES_BLOCK_SIZE;
}
*num=n;
}
| void AES_decrypt | ( | const unsigned char * | in, |
| unsigned char * | out, | ||
| const AES_KEY * | key | ||
| ) |
Definition at line 1021 of file aes_core.c.
References GETU32, PUTU32, aes_key_st::rd_key, aes_key_st::rounds, Td0, Td1, Td2, Td3, and Td4.
{
const u32 *rk;
u32 s0, s1, s2, s3, t0, t1, t2, t3;
#ifndef FULL_UNROLL
int r;
#endif /* ?FULL_UNROLL */
assert(in && out && key);
rk = key->rd_key;
/*
* map byte array block to cipher state
* and add initial round key:
*/
s0 = GETU32(in ) ^ rk[0];
s1 = GETU32(in + 4) ^ rk[1];
s2 = GETU32(in + 8) ^ rk[2];
s3 = GETU32(in + 12) ^ rk[3];
#ifdef FULL_UNROLL
/* round 1: */
t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >> 8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[ 4];
t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >> 8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[ 5];
t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >> 8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[ 6];
t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >> 8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[ 7];
/* round 2: */
s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >> 8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[ 8];
s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >> 8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[ 9];
s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >> 8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[10];
s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >> 8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[11];
/* round 3: */
t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >> 8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[12];
t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >> 8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[13];
t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >> 8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[14];
t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >> 8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[15];
/* round 4: */
s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >> 8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[16];
s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >> 8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[17];
s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >> 8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[18];
s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >> 8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[19];
/* round 5: */
t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >> 8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[20];
t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >> 8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[21];
t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >> 8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[22];
t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >> 8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[23];
/* round 6: */
s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >> 8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[24];
s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >> 8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[25];
s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >> 8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[26];
s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >> 8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[27];
/* round 7: */
t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >> 8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[28];
t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >> 8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[29];
t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >> 8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[30];
t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >> 8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[31];
/* round 8: */
s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >> 8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[32];
s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >> 8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[33];
s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >> 8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[34];
s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >> 8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[35];
/* round 9: */
t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >> 8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[36];
t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >> 8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[37];
t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >> 8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[38];
t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >> 8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[39];
if (key->rounds > 10) {
/* round 10: */
s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >> 8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[40];
s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >> 8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[41];
s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >> 8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[42];
s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >> 8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[43];
/* round 11: */
t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >> 8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[44];
t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >> 8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[45];
t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >> 8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[46];
t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >> 8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[47];
if (key->rounds > 12) {
/* round 12: */
s0 = Td0[t0 >> 24] ^ Td1[(t3 >> 16) & 0xff] ^ Td2[(t2 >> 8) & 0xff] ^ Td3[t1 & 0xff] ^ rk[48];
s1 = Td0[t1 >> 24] ^ Td1[(t0 >> 16) & 0xff] ^ Td2[(t3 >> 8) & 0xff] ^ Td3[t2 & 0xff] ^ rk[49];
s2 = Td0[t2 >> 24] ^ Td1[(t1 >> 16) & 0xff] ^ Td2[(t0 >> 8) & 0xff] ^ Td3[t3 & 0xff] ^ rk[50];
s3 = Td0[t3 >> 24] ^ Td1[(t2 >> 16) & 0xff] ^ Td2[(t1 >> 8) & 0xff] ^ Td3[t0 & 0xff] ^ rk[51];
/* round 13: */
t0 = Td0[s0 >> 24] ^ Td1[(s3 >> 16) & 0xff] ^ Td2[(s2 >> 8) & 0xff] ^ Td3[s1 & 0xff] ^ rk[52];
t1 = Td0[s1 >> 24] ^ Td1[(s0 >> 16) & 0xff] ^ Td2[(s3 >> 8) & 0xff] ^ Td3[s2 & 0xff] ^ rk[53];
t2 = Td0[s2 >> 24] ^ Td1[(s1 >> 16) & 0xff] ^ Td2[(s0 >> 8) & 0xff] ^ Td3[s3 & 0xff] ^ rk[54];
t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >> 8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[55];
}
}
rk += key->rounds << 2;
#else /* !FULL_UNROLL */
/*
* Nr - 1 full rounds:
*/
r = key->rounds >> 1;
for (;;) {
t0 =
Td0[(s0 >> 24) ] ^
Td1[(s3 >> 16) & 0xff] ^
Td2[(s2 >> 8) & 0xff] ^
Td3[(s1 ) & 0xff] ^
rk[4];
t1 =
Td0[(s1 >> 24) ] ^
Td1[(s0 >> 16) & 0xff] ^
Td2[(s3 >> 8) & 0xff] ^
Td3[(s2 ) & 0xff] ^
rk[5];
t2 =
Td0[(s2 >> 24) ] ^
Td1[(s1 >> 16) & 0xff] ^
Td2[(s0 >> 8) & 0xff] ^
Td3[(s3 ) & 0xff] ^
rk[6];
t3 =
Td0[(s3 >> 24) ] ^
Td1[(s2 >> 16) & 0xff] ^
Td2[(s1 >> 8) & 0xff] ^
Td3[(s0 ) & 0xff] ^
rk[7];
rk += 8;
if (--r == 0) {
break;
}
s0 =
Td0[(t0 >> 24) ] ^
Td1[(t3 >> 16) & 0xff] ^
Td2[(t2 >> 8) & 0xff] ^
Td3[(t1 ) & 0xff] ^
rk[0];
s1 =
Td0[(t1 >> 24) ] ^
Td1[(t0 >> 16) & 0xff] ^
Td2[(t3 >> 8) & 0xff] ^
Td3[(t2 ) & 0xff] ^
rk[1];
s2 =
Td0[(t2 >> 24) ] ^
Td1[(t1 >> 16) & 0xff] ^
Td2[(t0 >> 8) & 0xff] ^
Td3[(t3 ) & 0xff] ^
rk[2];
s3 =
Td0[(t3 >> 24) ] ^
Td1[(t2 >> 16) & 0xff] ^
Td2[(t1 >> 8) & 0xff] ^
Td3[(t0 ) & 0xff] ^
rk[3];
}
#endif /* ?FULL_UNROLL */
/*
* apply last round and
* map cipher state to byte array block:
*/
s0 =
(Td4[(t0 >> 24) ] & 0xff000000) ^
(Td4[(t3 >> 16) & 0xff] & 0x00ff0000) ^
(Td4[(t2 >> 8) & 0xff] & 0x0000ff00) ^
(Td4[(t1 ) & 0xff] & 0x000000ff) ^
rk[0];
PUTU32(out , s0);
s1 =
(Td4[(t1 >> 24) ] & 0xff000000) ^
(Td4[(t0 >> 16) & 0xff] & 0x00ff0000) ^
(Td4[(t3 >> 8) & 0xff] & 0x0000ff00) ^
(Td4[(t2 ) & 0xff] & 0x000000ff) ^
rk[1];
PUTU32(out + 4, s1);
s2 =
(Td4[(t2 >> 24) ] & 0xff000000) ^
(Td4[(t1 >> 16) & 0xff] & 0x00ff0000) ^
(Td4[(t0 >> 8) & 0xff] & 0x0000ff00) ^
(Td4[(t3 ) & 0xff] & 0x000000ff) ^
rk[2];
PUTU32(out + 8, s2);
s3 =
(Td4[(t3 >> 24) ] & 0xff000000) ^
(Td4[(t2 >> 16) & 0xff] & 0x00ff0000) ^
(Td4[(t1 >> 8) & 0xff] & 0x0000ff00) ^
(Td4[(t0 ) & 0xff] & 0x000000ff) ^
rk[3];
PUTU32(out + 12, s3);
}
| void AES_ecb_encrypt | ( | const unsigned char * | in, |
| unsigned char * | out, | ||
| const AES_KEY * | key, | ||
| const int | enc | ||
| ) |
Definition at line 1383 of file aes_core.c.
References AES_decrypt(), AES_DECRYPT, AES_encrypt(), and AES_ENCRYPT.
{
assert(in && out && key);
assert((AES_ENCRYPT == enc)||(AES_DECRYPT == enc));
if (AES_ENCRYPT == enc)
AES_encrypt(in, out, key);
else
AES_decrypt(in, out, key);
}
| void AES_encrypt | ( | const unsigned char * | in, |
| unsigned char * | out, | ||
| const AES_KEY * | key | ||
| ) |
Definition at line 830 of file aes_core.c.
References GETU32, PUTU32, aes_key_st::rd_key, aes_key_st::rounds, Te0, Te1, Te2, Te3, and Te4.
{
const u32 *rk;
u32 s0, s1, s2, s3, t0, t1, t2, t3;
#ifndef FULL_UNROLL
int r;
#endif /* ?FULL_UNROLL */
assert(in && out && key);
rk = key->rd_key;
/*
* map byte array block to cipher state
* and add initial round key:
*/
s0 = GETU32(in ) ^ rk[0];
s1 = GETU32(in + 4) ^ rk[1];
s2 = GETU32(in + 8) ^ rk[2];
s3 = GETU32(in + 12) ^ rk[3];
#ifdef FULL_UNROLL
/* round 1: */
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[ 4];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[ 5];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[ 6];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[ 7];
/* round 2: */
s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[ 8];
s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[ 9];
s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[10];
s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[11];
/* round 3: */
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[12];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[13];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[14];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[15];
/* round 4: */
s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[16];
s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[17];
s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[18];
s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[19];
/* round 5: */
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[20];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[21];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[22];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[23];
/* round 6: */
s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[24];
s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[25];
s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[26];
s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[27];
/* round 7: */
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[28];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[29];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[30];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[31];
/* round 8: */
s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[32];
s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[33];
s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[34];
s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[35];
/* round 9: */
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[36];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[37];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[38];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[39];
if (key->rounds > 10) {
/* round 10: */
s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[40];
s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[41];
s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[42];
s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[43];
/* round 11: */
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[44];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[45];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[46];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[47];
if (key->rounds > 12) {
/* round 12: */
s0 = Te0[t0 >> 24] ^ Te1[(t1 >> 16) & 0xff] ^ Te2[(t2 >> 8) & 0xff] ^ Te3[t3 & 0xff] ^ rk[48];
s1 = Te0[t1 >> 24] ^ Te1[(t2 >> 16) & 0xff] ^ Te2[(t3 >> 8) & 0xff] ^ Te3[t0 & 0xff] ^ rk[49];
s2 = Te0[t2 >> 24] ^ Te1[(t3 >> 16) & 0xff] ^ Te2[(t0 >> 8) & 0xff] ^ Te3[t1 & 0xff] ^ rk[50];
s3 = Te0[t3 >> 24] ^ Te1[(t0 >> 16) & 0xff] ^ Te2[(t1 >> 8) & 0xff] ^ Te3[t2 & 0xff] ^ rk[51];
/* round 13: */
t0 = Te0[s0 >> 24] ^ Te1[(s1 >> 16) & 0xff] ^ Te2[(s2 >> 8) & 0xff] ^ Te3[s3 & 0xff] ^ rk[52];
t1 = Te0[s1 >> 24] ^ Te1[(s2 >> 16) & 0xff] ^ Te2[(s3 >> 8) & 0xff] ^ Te3[s0 & 0xff] ^ rk[53];
t2 = Te0[s2 >> 24] ^ Te1[(s3 >> 16) & 0xff] ^ Te2[(s0 >> 8) & 0xff] ^ Te3[s1 & 0xff] ^ rk[54];
t3 = Te0[s3 >> 24] ^ Te1[(s0 >> 16) & 0xff] ^ Te2[(s1 >> 8) & 0xff] ^ Te3[s2 & 0xff] ^ rk[55];
}
}
rk += key->rounds << 2;
#else /* !FULL_UNROLL */
/*
* Nr - 1 full rounds:
*/
r = key->rounds >> 1;
for (;;) {
t0 =
Te0[(s0 >> 24) ] ^
Te1[(s1 >> 16) & 0xff] ^
Te2[(s2 >> 8) & 0xff] ^
Te3[(s3 ) & 0xff] ^
rk[4];
t1 =
Te0[(s1 >> 24) ] ^
Te1[(s2 >> 16) & 0xff] ^
Te2[(s3 >> 8) & 0xff] ^
Te3[(s0 ) & 0xff] ^
rk[5];
t2 =
Te0[(s2 >> 24) ] ^
Te1[(s3 >> 16) & 0xff] ^
Te2[(s0 >> 8) & 0xff] ^
Te3[(s1 ) & 0xff] ^
rk[6];
t3 =
Te0[(s3 >> 24) ] ^
Te1[(s0 >> 16) & 0xff] ^
Te2[(s1 >> 8) & 0xff] ^
Te3[(s2 ) & 0xff] ^
rk[7];
rk += 8;
if (--r == 0) {
break;
}
s0 =
Te0[(t0 >> 24) ] ^
Te1[(t1 >> 16) & 0xff] ^
Te2[(t2 >> 8) & 0xff] ^
Te3[(t3 ) & 0xff] ^
rk[0];
s1 =
Te0[(t1 >> 24) ] ^
Te1[(t2 >> 16) & 0xff] ^
Te2[(t3 >> 8) & 0xff] ^
Te3[(t0 ) & 0xff] ^
rk[1];
s2 =
Te0[(t2 >> 24) ] ^
Te1[(t3 >> 16) & 0xff] ^
Te2[(t0 >> 8) & 0xff] ^
Te3[(t1 ) & 0xff] ^
rk[2];
s3 =
Te0[(t3 >> 24) ] ^
Te1[(t0 >> 16) & 0xff] ^
Te2[(t1 >> 8) & 0xff] ^
Te3[(t2 ) & 0xff] ^
rk[3];
}
#endif /* ?FULL_UNROLL */
/*
* apply last round and
* map cipher state to byte array block:
*/
s0 =
(Te4[(t0 >> 24) ] & 0xff000000) ^
(Te4[(t1 >> 16) & 0xff] & 0x00ff0000) ^
(Te4[(t2 >> 8) & 0xff] & 0x0000ff00) ^
(Te4[(t3 ) & 0xff] & 0x000000ff) ^
rk[0];
PUTU32(out , s0);
s1 =
(Te4[(t1 >> 24) ] & 0xff000000) ^
(Te4[(t2 >> 16) & 0xff] & 0x00ff0000) ^
(Te4[(t3 >> 8) & 0xff] & 0x0000ff00) ^
(Te4[(t0 ) & 0xff] & 0x000000ff) ^
rk[1];
PUTU32(out + 4, s1);
s2 =
(Te4[(t2 >> 24) ] & 0xff000000) ^
(Te4[(t3 >> 16) & 0xff] & 0x00ff0000) ^
(Te4[(t0 >> 8) & 0xff] & 0x0000ff00) ^
(Te4[(t1 ) & 0xff] & 0x000000ff) ^
rk[2];
PUTU32(out + 8, s2);
s3 =
(Te4[(t3 >> 24) ] & 0xff000000) ^
(Te4[(t0 >> 16) & 0xff] & 0x00ff0000) ^
(Te4[(t1 >> 8) & 0xff] & 0x0000ff00) ^
(Te4[(t2 ) & 0xff] & 0x000000ff) ^
rk[3];
PUTU32(out + 12, s3);
}
| void AES_ofb128_encrypt | ( | const unsigned char * | in, |
| unsigned char * | out, | ||
| const unsigned long | length, | ||
| const AES_KEY * | key, | ||
| unsigned char * | ivec, | ||
| int * | num | ||
| ) |
Definition at line 1405 of file aes_core.c.
References AES_BLOCK_SIZE, and AES_encrypt().
{
unsigned int n;
unsigned long l=length;
assert(in && out && key && ivec && num);
n = *num;
while (l--) {
if (n == 0) {
AES_encrypt(ivec, ivec, key);
}
*(out++) = *(in++) ^ ivec[n];
n = (n+1) % AES_BLOCK_SIZE;
}
*num=n;
}
| const char* AES_options | ( | void | ) |
Definition at line 1397 of file aes_core.c.
{
#ifdef FULL_UNROLL
return "aes(full)";
#else
return "aes(partial)";
#endif
}
| int AES_set_decrypt_key | ( | const unsigned char * | userKey, |
| const int | bits, | ||
| AES_KEY * | key | ||
| ) |
Expand the cipher key into the decryption key schedule.
Definition at line 778 of file aes_core.c.
References AES_set_encrypt_key(), i, j, aes_key_st::rd_key, aes_key_st::rounds, Td0, Td1, Td2, Td3, and Te4.
{
u32 *rk;
int i, j, status;
u32 temp;
/* first, start with an encryption schedule */
status = AES_set_encrypt_key(userKey, bits, key);
if (status < 0)
return status;
rk = key->rd_key;
/* invert the order of the round keys: */
for (i = 0, j = 4*(key->rounds); i < j; i += 4, j -= 4) {
temp = rk[i ]; rk[i ] = rk[j ]; rk[j ] = temp;
temp = rk[i + 1]; rk[i + 1] = rk[j + 1]; rk[j + 1] = temp;
temp = rk[i + 2]; rk[i + 2] = rk[j + 2]; rk[j + 2] = temp;
temp = rk[i + 3]; rk[i + 3] = rk[j + 3]; rk[j + 3] = temp;
}
/* apply the inverse MixColumn transform to all round keys but the first and the last: */
for (i = 1; i < (key->rounds); i++) {
rk += 4;
rk[0] =
Td0[Te4[(rk[0] >> 24) ] & 0xff] ^
Td1[Te4[(rk[0] >> 16) & 0xff] & 0xff] ^
Td2[Te4[(rk[0] >> 8) & 0xff] & 0xff] ^
Td3[Te4[(rk[0] ) & 0xff] & 0xff];
rk[1] =
Td0[Te4[(rk[1] >> 24) ] & 0xff] ^
Td1[Te4[(rk[1] >> 16) & 0xff] & 0xff] ^
Td2[Te4[(rk[1] >> 8) & 0xff] & 0xff] ^
Td3[Te4[(rk[1] ) & 0xff] & 0xff];
rk[2] =
Td0[Te4[(rk[2] >> 24) ] & 0xff] ^
Td1[Te4[(rk[2] >> 16) & 0xff] & 0xff] ^
Td2[Te4[(rk[2] >> 8) & 0xff] & 0xff] ^
Td3[Te4[(rk[2] ) & 0xff] & 0xff];
rk[3] =
Td0[Te4[(rk[3] >> 24) ] & 0xff] ^
Td1[Te4[(rk[3] >> 16) & 0xff] & 0xff] ^
Td2[Te4[(rk[3] >> 8) & 0xff] & 0xff] ^
Td3[Te4[(rk[3] ) & 0xff] & 0xff];
}
return 0;
}
| int AES_set_encrypt_key | ( | const unsigned char * | userKey, |
| const int | bits, | ||
| AES_KEY * | key | ||
| ) |
Expand the cipher key into the encryption key schedule.
Definition at line 677 of file aes_core.c.
References GETU32, i, rcon, aes_key_st::rd_key, aes_key_st::rounds, and Te4.
{
u32 *rk;
int i = 0;
u32 temp;
if (!userKey || !key)
return -1;
if (bits != 128 && bits != 192 && bits != 256)
return -2;
rk = key->rd_key;
if (bits==128)
key->rounds = 10;
else if (bits==192)
key->rounds = 12;
else
key->rounds = 14;
rk[0] = GETU32(userKey );
rk[1] = GETU32(userKey + 4);
rk[2] = GETU32(userKey + 8);
rk[3] = GETU32(userKey + 12);
if (bits == 128) {
while (1) {
temp = rk[3];
rk[4] = rk[0] ^
(Te4[(temp >> 16) & 0xff] & 0xff000000) ^
(Te4[(temp >> 8) & 0xff] & 0x00ff0000) ^
(Te4[(temp ) & 0xff] & 0x0000ff00) ^
(Te4[(temp >> 24) ] & 0x000000ff) ^
rcon[i];
rk[5] = rk[1] ^ rk[4];
rk[6] = rk[2] ^ rk[5];
rk[7] = rk[3] ^ rk[6];
if (++i == 10) {
return 0;
}
rk += 4;
}
}
rk[4] = GETU32(userKey + 16);
rk[5] = GETU32(userKey + 20);
if (bits == 192) {
while (1) {
temp = rk[ 5];
rk[ 6] = rk[ 0] ^
(Te4[(temp >> 16) & 0xff] & 0xff000000) ^
(Te4[(temp >> 8) & 0xff] & 0x00ff0000) ^
(Te4[(temp ) & 0xff] & 0x0000ff00) ^
(Te4[(temp >> 24) ] & 0x000000ff) ^
rcon[i];
rk[ 7] = rk[ 1] ^ rk[ 6];
rk[ 8] = rk[ 2] ^ rk[ 7];
rk[ 9] = rk[ 3] ^ rk[ 8];
if (++i == 8) {
return 0;
}
rk[10] = rk[ 4] ^ rk[ 9];
rk[11] = rk[ 5] ^ rk[10];
rk += 6;
}
}
rk[6] = GETU32(userKey + 24);
rk[7] = GETU32(userKey + 28);
if (bits == 256) {
while (1) {
temp = rk[ 7];
rk[ 8] = rk[ 0] ^
(Te4[(temp >> 16) & 0xff] & 0xff000000) ^
(Te4[(temp >> 8) & 0xff] & 0x00ff0000) ^
(Te4[(temp ) & 0xff] & 0x0000ff00) ^
(Te4[(temp >> 24) ] & 0x000000ff) ^
rcon[i];
rk[ 9] = rk[ 1] ^ rk[ 8];
rk[10] = rk[ 2] ^ rk[ 9];
rk[11] = rk[ 3] ^ rk[10];
if (++i == 7) {
return 0;
}
temp = rk[11];
rk[12] = rk[ 4] ^
(Te4[(temp >> 24) ] & 0xff000000) ^
(Te4[(temp >> 16) & 0xff] & 0x00ff0000) ^
(Te4[(temp >> 8) & 0xff] & 0x0000ff00) ^
(Te4[(temp ) & 0xff] & 0x000000ff);
rk[13] = rk[ 5] ^ rk[12];
rk[14] = rk[ 6] ^ rk[13];
rk[15] = rk[ 7] ^ rk[14];
rk += 8;
}
}
return 0;
}
1.7.3