* It is used as playground for cache-time attack mitigations and
* serves as reference C implementation for x86[_64] assembler.
*
- *
<appro@fy.chalmers.se>
+ * <appro@fy.chalmers.se>
*/
#if 1
static void prefetch256(const void *table)
{
- volatile unsigned long *t=(void *)table,ret;
- unsigned long sum;
- int i;
+ volatile unsigned long *t=(void *)table,ret;
+ unsigned long sum;
+ int i;
- /* 32 is common least cache-line size */
- for (sum=0,i=0;i<256/sizeof(t[0]);i+=32/sizeof(t[0])) sum ^= t[i];
+ /* 32 is common least cache-line size */
+ for (sum=0,i=0;i<256/sizeof(t[0]);i+=32/sizeof(t[0])) sum ^= t[i];
- ret = sum;
+ ret = sum;
}
#else
# define prefetch256(t)
#if (defined(_WIN32) || defined(_WIN64)) && !defined(__MINGW32__)
typedef unsigned __int64 u64;
-#define U64(C) C##UI64
+#define U64(C) C##UI64
#elif defined(__arch64__)
typedef unsigned long u64;
-#define U64(C) C##UL
+#define U64(C) C##UL
#else
typedef unsigned long long u64;
-#define U64(C) C##ULL
+#define U64(C) C##ULL
#endif
#undef ROTATE
#if defined(_MSC_VER)
-# define ROTATE(a,n) _lrotl(a,n)
+# define ROTATE(a,n) _lrotl(a,n)
#elif defined(__ICC)
-# define ROTATE(a,n) _rotl(a,n)
+# define ROTATE(a,n) _rotl(a,n)
#elif defined(__GNUC__) && __GNUC__>=2
# if defined(__i386) || defined(__i386__) || defined(__x86_64) || defined(__x86_64__)
-# define ROTATE(a,n) ({ register unsigned int ret; \
- asm ( \
- "roll %1,%0" \
- : "=r"(ret) \
- : "I"(n), "0"(a) \
- : "cc"); \
- ret; \
- })
+# define ROTATE(a,n) ({ register unsigned int ret; \
+ asm ( \
+ "roll %1,%0" \
+ : "=r"(ret) \
+ : "I"(n), "0"(a) \
+ : "cc"); \
+ ret; \
+ })
# endif
#endif
/*-
* Expand the cipher key into the encryption key schedule.
*/
int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
- AES_KEY *key) {
+ AES_KEY *key)
+{
- u32 *rk;
- int i = 0;
- u32 temp;
+ u32 *rk;
+ int i = 0;
+ u32 temp;
- if (!userKey || !key)
- return -1;
- if (bits != 128 && bits != 192 && bits != 256)
- return -2;
+ if (!userKey || !key)
+ return -1;
+ if (bits != 128 && bits != 192 && bits != 256)
+ return -2;
- rk = key->rd_key;
+ rk = key->rd_key;
- if (bits==128)
- key->rounds = 10;
- else if (bits==192)
- key->rounds = 12;
- else
- key->rounds = 14;
+ 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 >> 8) & 0xff] ) ^
- (Te4[(temp >> 16) & 0xff] << 8) ^
- (Te4[(temp >> 24) ] << 16) ^
- (Te4[(temp ) & 0xff] << 24) ^
- 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 >> 8) & 0xff] ) ^
- (Te4[(temp >> 16) & 0xff] << 8) ^
- (Te4[(temp >> 24) ] << 16) ^
- (Te4[(temp ) & 0xff] << 24) ^
- 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 >> 8) & 0xff] ) ^
- (Te4[(temp >> 16) & 0xff] << 8) ^
- (Te4[(temp >> 24) ] << 16) ^
- (Te4[(temp ) & 0xff] << 24) ^
- 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 ) & 0xff] ) ^
- (Te4[(temp >> 8) & 0xff] << 8) ^
- (Te4[(temp >> 16) & 0xff] << 16) ^
- (Te4[(temp >> 24) ] << 24);
- rk[13] = rk[ 5] ^ rk[12];
- rk[14] = rk[ 6] ^ rk[13];
- rk[15] = rk[ 7] ^ rk[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 >> 8) & 0xff] ) ^
+ (Te4[(temp >> 16) & 0xff] << 8) ^
+ (Te4[(temp >> 24) ] << 16) ^
+ (Te4[(temp ) & 0xff] << 24) ^
+ 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 >> 8) & 0xff] ) ^
+ (Te4[(temp >> 16) & 0xff] << 8) ^
+ (Te4[(temp >> 24) ] << 16) ^
+ (Te4[(temp ) & 0xff] << 24) ^
+ 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 >> 8) & 0xff] ) ^
+ (Te4[(temp >> 16) & 0xff] << 8) ^
+ (Te4[(temp >> 24) ] << 16) ^
+ (Te4[(temp ) & 0xff] << 24) ^
+ 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 ) & 0xff] ) ^
+ (Te4[(temp >> 8) & 0xff] << 8) ^
+ (Te4[(temp >> 16) & 0xff] << 16) ^
+ (Te4[(temp >> 24) ] << 24);
+ rk[13] = rk[ 5] ^ rk[12];
+ rk[14] = rk[ 6] ^ rk[13];
+ rk[15] = rk[ 7] ^ rk[14];
- rk += 8;
- }
- }
- return 0;
+ rk += 8;
+ }
+ }
+ return 0;
}
/**
* Expand the cipher key into the decryption key schedule.
*/
int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
- AES_KEY *key) {
+ AES_KEY *key)
+{
- u32 *rk;
- int i, j, status;
- u32 temp;
+ 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;
+ /* first, start with an encryption schedule */
+ status = AES_set_encrypt_key(userKey, bits, key);
+ if (status < 0)
+ return status;
- rk = key->rd_key;
+ 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;
+ /* 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;
#if 1
- for (j = 0; j < 4; j++) {
- u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m;
+ for (j = 0; j < 4; j++) {
+ u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m;
- tp1 = rk[j];
- m = tp1 & 0x80808080;
- tp2 = ((tp1 & 0x7f7f7f7f) << 1) ^
- ((m - (m >> 7)) & 0x1b1b1b1b);
- m = tp2 & 0x80808080;
- tp4 = ((tp2 & 0x7f7f7f7f) << 1) ^
- ((m - (m >> 7)) & 0x1b1b1b1b);
- m = tp4 & 0x80808080;
- tp8 = ((tp4 & 0x7f7f7f7f) << 1) ^
- ((m - (m >> 7)) & 0x1b1b1b1b);
- tp9 = tp8 ^ tp1;
- tpb = tp9 ^ tp2;
- tpd = tp9 ^ tp4;
- tpe = tp8 ^ tp4 ^ tp2;
+ tp1 = rk[j];
+ m = tp1 & 0x80808080;
+ tp2 = ((tp1 & 0x7f7f7f7f) << 1) ^
+ ((m - (m >> 7)) & 0x1b1b1b1b);
+ m = tp2 & 0x80808080;
+ tp4 = ((tp2 & 0x7f7f7f7f) << 1) ^
+ ((m - (m >> 7)) & 0x1b1b1b1b);
+ m = tp4 & 0x80808080;
+ tp8 = ((tp4 & 0x7f7f7f7f) << 1) ^
+ ((m - (m >> 7)) & 0x1b1b1b1b);
+ tp9 = tp8 ^ tp1;
+ tpb = tp9 ^ tp2;
+ tpd = tp9 ^ tp4;
+ tpe = tp8 ^ tp4 ^ tp2;
#if defined(ROTATE)
- rk[j] = tpe ^ ROTATE(tpd,16) ^
- ROTATE(tp9,8) ^ ROTATE(tpb,24);
+ rk[j] = tpe ^ ROTATE(tpd,16) ^
+ ROTATE(tp9,8) ^ ROTATE(tpb,24);
#else
- rk[j] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^
- (tp9 >> 24) ^ (tp9 << 8) ^
- (tpb >> 8) ^ (tpb << 24);
+ rk[j] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^
+ (tp9 >> 24) ^ (tp9 << 8) ^
+ (tpb >> 8) ^ (tpb << 24);
#endif
- }
+ }
#else
- rk[0] =
- Td0[Te2[(rk[0] ) & 0xff] & 0xff] ^
- Td1[Te2[(rk[0] >> 8) & 0xff] & 0xff] ^
- Td2[Te2[(rk[0] >> 16) & 0xff] & 0xff] ^
- Td3[Te2[(rk[0] >> 24) ] & 0xff];
- rk[1] =
- Td0[Te2[(rk[1] ) & 0xff] & 0xff] ^
- Td1[Te2[(rk[1] >> 8) & 0xff] & 0xff] ^
- Td2[Te2[(rk[1] >> 16) & 0xff] & 0xff] ^
- Td3[Te2[(rk[1] >> 24) ] & 0xff];
- rk[2] =
- Td0[Te2[(rk[2] ) & 0xff] & 0xff] ^
- Td1[Te2[(rk[2] >> 8) & 0xff] & 0xff] ^
- Td2[Te2[(rk[2] >> 16) & 0xff] & 0xff] ^
- Td3[Te2[(rk[2] >> 24) ] & 0xff];
- rk[3] =
- Td0[Te2[(rk[3] ) & 0xff] & 0xff] ^
- Td1[Te2[(rk[3] >> 8) & 0xff] & 0xff] ^
- Td2[Te2[(rk[3] >> 16) & 0xff] & 0xff] ^
- Td3[Te2[(rk[3] >> 24) ] & 0xff];
+ rk[0] =
+ Td0[Te2[(rk[0] ) & 0xff] & 0xff] ^
+ Td1[Te2[(rk[0] >> 8) & 0xff] & 0xff] ^
+ Td2[Te2[(rk[0] >> 16) & 0xff] & 0xff] ^
+ Td3[Te2[(rk[0] >> 24) ] & 0xff];
+ rk[1] =
+ Td0[Te2[(rk[1] ) & 0xff] & 0xff] ^
+ Td1[Te2[(rk[1] >> 8) & 0xff] & 0xff] ^
+ Td2[Te2[(rk[1] >> 16) & 0xff] & 0xff] ^
+ Td3[Te2[(rk[1] >> 24) ] & 0xff];
+ rk[2] =
+ Td0[Te2[(rk[2] ) & 0xff] & 0xff] ^
+ Td1[Te2[(rk[2] >> 8) & 0xff] & 0xff] ^
+ Td2[Te2[(rk[2] >> 16) & 0xff] & 0xff] ^
+ Td3[Te2[(rk[2] >> 24) ] & 0xff];
+ rk[3] =
+ Td0[Te2[(rk[3] ) & 0xff] & 0xff] ^
+ Td1[Te2[(rk[3] >> 8) & 0xff] & 0xff] ^
+ Td2[Te2[(rk[3] >> 16) & 0xff] & 0xff] ^
+ Td3[Te2[(rk[3] >> 24) ] & 0xff];
#endif
- }
- return 0;
+ }
+ return 0;
}
/*
* in and out can overlap
*/
void AES_encrypt(const unsigned char *in, unsigned char *out,
- const AES_KEY *key) {
+ const AES_KEY *key)
+{
- const u32 *rk;
- u32 s0, s1, s2, s3, t[4];
- int r;
+ const u32 *rk;
+ u32 s0, s1, s2, s3, t[4];
+ int r;
- assert(in && out && key);
- rk = key->rd_key;
+ 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];
+ /*
+ * 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];
#if defined(AES_COMPACT_IN_OUTER_ROUNDS)
- prefetch256(Te4);
+ prefetch256(Te4);
- t[0] = Te4[(s0 ) & 0xff] ^
- Te4[(s1 >> 8) & 0xff] << 8 ^
- Te4[(s2 >> 16) & 0xff] << 16 ^
- Te4[(s3 >> 24) ] << 24;
- t[1] = Te4[(s1 ) & 0xff] ^
- Te4[(s2 >> 8) & 0xff] << 8 ^
- Te4[(s3 >> 16) & 0xff] << 16 ^
- Te4[(s0 >> 24) ] << 24;
- t[2] = Te4[(s2 ) & 0xff] ^
- Te4[(s3 >> 8) & 0xff] << 8 ^
- Te4[(s0 >> 16) & 0xff] << 16 ^
- Te4[(s1 >> 24) ] << 24;
- t[3] = Te4[(s3 ) & 0xff] ^
- Te4[(s0 >> 8) & 0xff] << 8 ^
- Te4[(s1 >> 16) & 0xff] << 16 ^
- Te4[(s2 >> 24) ] << 24;
+ t[0] = Te4[(s0 ) & 0xff] ^
+ Te4[(s1 >> 8) & 0xff] << 8 ^
+ Te4[(s2 >> 16) & 0xff] << 16 ^
+ Te4[(s3 >> 24) ] << 24;
+ t[1] = Te4[(s1 ) & 0xff] ^
+ Te4[(s2 >> 8) & 0xff] << 8 ^
+ Te4[(s3 >> 16) & 0xff] << 16 ^
+ Te4[(s0 >> 24) ] << 24;
+ t[2] = Te4[(s2 ) & 0xff] ^
+ Te4[(s3 >> 8) & 0xff] << 8 ^
+ Te4[(s0 >> 16) & 0xff] << 16 ^
+ Te4[(s1 >> 24) ] << 24;
+ t[3] = Te4[(s3 ) & 0xff] ^
+ Te4[(s0 >> 8) & 0xff] << 8 ^
+ Te4[(s1 >> 16) & 0xff] << 16 ^
+ Te4[(s2 >> 24) ] << 24;
- /* now do the linear transform using words */
- { int i;
- u32 r0, r1, r2;
+ /* now do the linear transform using words */
+ { int i;
+ u32 r0, r1, r2;
- for (i = 0; i < 4; i++) {
- r0 = t[i];
- r1 = r0 & 0x80808080;
- r2 = ((r0 & 0x7f7f7f7f) << 1) ^
- ((r1 - (r1 >> 7)) & 0x1b1b1b1b);
+ for (i = 0; i < 4; i++) {
+ r0 = t[i];
+ r1 = r0 & 0x80808080;
+ r2 = ((r0 & 0x7f7f7f7f) << 1) ^
+ ((r1 - (r1 >> 7)) & 0x1b1b1b1b);
#if defined(ROTATE)
- t[i] = r2 ^ ROTATE(r2,24) ^ ROTATE(r0,24) ^
- ROTATE(r0,16) ^ ROTATE(r0,8);
+ t[i] = r2 ^ ROTATE(r2,24) ^ ROTATE(r0,24) ^
+ ROTATE(r0,16) ^ ROTATE(r0,8);
#else
- t[i] = r2 ^ ((r2 ^ r0) << 24) ^ ((r2 ^ r0) >> 8) ^
- (r0 << 16) ^ (r0 >> 16) ^
- (r0 << 8) ^ (r0 >> 24);
+ t[i] = r2 ^ ((r2 ^ r0) << 24) ^ ((r2 ^ r0) >> 8) ^
+ (r0 << 16) ^ (r0 >> 16) ^
+ (r0 << 8) ^ (r0 >> 24);
#endif
- t[i] ^= rk[4+i];
- }
- }
+ t[i] ^= rk[4+i];
+ }
+ }
#else
- t[0] = Te0[(s0 ) & 0xff] ^
- Te1[(s1 >> 8) & 0xff] ^
- Te2[(s2 >> 16) & 0xff] ^
- Te3[(s3 >> 24) ] ^
- rk[4];
- t[1] = Te0[(s1 ) & 0xff] ^
- Te1[(s2 >> 8) & 0xff] ^
- Te2[(s3 >> 16) & 0xff] ^
- Te3[(s0 >> 24) ] ^
- rk[5];
- t[2] = Te0[(s2 ) & 0xff] ^
- Te1[(s3 >> 8) & 0xff] ^
- Te2[(s0 >> 16) & 0xff] ^
- Te3[(s1 >> 24) ] ^
- rk[6];
- t[3] = Te0[(s3 ) & 0xff] ^
- Te1[(s0 >> 8) & 0xff] ^
- Te2[(s1 >> 16) & 0xff] ^
- Te3[(s2 >> 24) ] ^
- rk[7];
+ t[0] = Te0[(s0 ) & 0xff] ^
+ Te1[(s1 >> 8) & 0xff] ^
+ Te2[(s2 >> 16) & 0xff] ^
+ Te3[(s3 >> 24) ] ^
+ rk[4];
+ t[1] = Te0[(s1 ) & 0xff] ^
+ Te1[(s2 >> 8) & 0xff] ^
+ Te2[(s3 >> 16) & 0xff] ^
+ Te3[(s0 >> 24) ] ^
+ rk[5];
+ t[2] = Te0[(s2 ) & 0xff] ^
+ Te1[(s3 >> 8) & 0xff] ^
+ Te2[(s0 >> 16) & 0xff] ^
+ Te3[(s1 >> 24) ] ^
+ rk[6];
+ t[3] = Te0[(s3 ) & 0xff] ^
+ Te1[(s0 >> 8) & 0xff] ^
+ Te2[(s1 >> 16) & 0xff] ^
+ Te3[(s2 >> 24) ] ^
+ rk[7];
#endif
- s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
+ s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
/*
* Nr - 2 full rounds:
*/
for (rk+=8,r=key->rounds-2; r>0; rk+=4,r--) {
#if defined(AES_COMPACT_IN_INNER_ROUNDS)
- t[0] = Te4[(s0 ) & 0xff] ^
- Te4[(s1 >> 8) & 0xff] << 8 ^
- Te4[(s2 >> 16) & 0xff] << 16 ^
- Te4[(s3 >> 24) ] << 24;
- t[1] = Te4[(s1 ) & 0xff] ^
- Te4[(s2 >> 8) & 0xff] << 8 ^
- Te4[(s3 >> 16) & 0xff] << 16 ^
- Te4[(s0 >> 24) ] << 24;
- t[2] = Te4[(s2 ) & 0xff] ^
- Te4[(s3 >> 8) & 0xff] << 8 ^
- Te4[(s0 >> 16) & 0xff] << 16 ^
- Te4[(s1 >> 24) ] << 24;
- t[3] = Te4[(s3 ) & 0xff] ^
- Te4[(s0 >> 8) & 0xff] << 8 ^
- Te4[(s1 >> 16) & 0xff] << 16 ^
- Te4[(s2 >> 24) ] << 24;
+ t[0] = Te4[(s0 ) & 0xff] ^
+ Te4[(s1 >> 8) & 0xff] << 8 ^
+ Te4[(s2 >> 16) & 0xff] << 16 ^
+ Te4[(s3 >> 24) ] << 24;
+ t[1] = Te4[(s1 ) & 0xff] ^
+ Te4[(s2 >> 8) & 0xff] << 8 ^
+ Te4[(s3 >> 16) & 0xff] << 16 ^
+ Te4[(s0 >> 24) ] << 24;
+ t[2] = Te4[(s2 ) & 0xff] ^
+ Te4[(s3 >> 8) & 0xff] << 8 ^
+ Te4[(s0 >> 16) & 0xff] << 16 ^
+ Te4[(s1 >> 24) ] << 24;
+ t[3] = Te4[(s3 ) & 0xff] ^
+ Te4[(s0 >> 8) & 0xff] << 8 ^
+ Te4[(s1 >> 16) & 0xff] << 16 ^
+ Te4[(s2 >> 24) ] << 24;
- /* now do the linear transform using words */
- { int i;
- u32 r0, r1, r2;
+ /* now do the linear transform using words */
+ {
+ int i;
+ u32 r0, r1, r2;
- for (i = 0; i < 4; i++) {
- r0 = t[i];
- r1 = r0 & 0x80808080;
- r2 = ((r0 & 0x7f7f7f7f) << 1) ^
- ((r1 - (r1 >> 7)) & 0x1b1b1b1b);
+ for (i = 0; i < 4; i++) {
+ r0 = t[i];
+ r1 = r0 & 0x80808080;
+ r2 = ((r0 & 0x7f7f7f7f) << 1) ^
+ ((r1 - (r1 >> 7)) & 0x1b1b1b1b);
#if defined(ROTATE)
- t[i] = r2 ^ ROTATE(r2,24) ^ ROTATE(r0,24) ^
- ROTATE(r0,16) ^ ROTATE(r0,8);
+ t[i] = r2 ^ ROTATE(r2,24) ^ ROTATE(r0,24) ^
+ ROTATE(r0,16) ^ ROTATE(r0,8);
#else
- t[i] = r2 ^ ((r2 ^ r0) << 24) ^ ((r2 ^ r0) >> 8) ^
- (r0 << 16) ^ (r0 >> 16) ^
- (r0 << 8) ^ (r0 >> 24);
+ t[i] = r2 ^ ((r2 ^ r0) << 24) ^ ((r2 ^ r0) >> 8) ^
+ (r0 << 16) ^ (r0 >> 16) ^
+ (r0 << 8) ^ (r0 >> 24);
#endif
- t[i] ^= rk[i];
- }
- }
+ t[i] ^= rk[i];
+ }
+ }
#else
- t[0] = Te0[(s0 ) & 0xff] ^
- Te1[(s1 >> 8) & 0xff] ^
- Te2[(s2 >> 16) & 0xff] ^
- Te3[(s3 >> 24) ] ^
- rk[0];
- t[1] = Te0[(s1 ) & 0xff] ^
- Te1[(s2 >> 8) & 0xff] ^
- Te2[(s3 >> 16) & 0xff] ^
- Te3[(s0 >> 24) ] ^
- rk[1];
- t[2] = Te0[(s2 ) & 0xff] ^
- Te1[(s3 >> 8) & 0xff] ^
- Te2[(s0 >> 16) & 0xff] ^
- Te3[(s1 >> 24) ] ^
- rk[2];
- t[3] = Te0[(s3 ) & 0xff] ^
- Te1[(s0 >> 8) & 0xff] ^
- Te2[(s1 >> 16) & 0xff] ^
- Te3[(s2 >> 24) ] ^
- rk[3];
+ t[0] = Te0[(s0 ) & 0xff] ^
+ Te1[(s1 >> 8) & 0xff] ^
+ Te2[(s2 >> 16) & 0xff] ^
+ Te3[(s3 >> 24) ] ^
+ rk[0];
+ t[1] = Te0[(s1 ) & 0xff] ^
+ Te1[(s2 >> 8) & 0xff] ^
+ Te2[(s3 >> 16) & 0xff] ^
+ Te3[(s0 >> 24) ] ^
+ rk[1];
+ t[2] = Te0[(s2 ) & 0xff] ^
+ Te1[(s3 >> 8) & 0xff] ^
+ Te2[(s0 >> 16) & 0xff] ^
+ Te3[(s1 >> 24) ] ^
+ rk[2];
+ t[3] = Te0[(s3 ) & 0xff] ^
+ Te1[(s0 >> 8) & 0xff] ^
+ Te2[(s1 >> 16) & 0xff] ^
+ Te3[(s2 >> 24) ] ^
+ rk[3];
#endif
- s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
+ s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
}
/*
- * apply last round and
- * map cipher state to byte array block:
- */
+ * apply last round and
+ * map cipher state to byte array block:
+ */
#if defined(AES_COMPACT_IN_OUTER_ROUNDS)
- prefetch256(Te4);
+ prefetch256(Te4);
- *(u32*)(out+0) =
- Te4[(s0 ) & 0xff] ^
- Te4[(s1 >> 8) & 0xff] << 8 ^
- Te4[(s2 >> 16) & 0xff] << 16 ^
- Te4[(s3 >> 24) ] << 24 ^
- rk[0];
- *(u32*)(out+4) =
- Te4[(s1 ) & 0xff] ^
- Te4[(s2 >> 8) & 0xff] << 8 ^
- Te4[(s3 >> 16) & 0xff] << 16 ^
- Te4[(s0 >> 24) ] << 24 ^
- rk[1];
- *(u32*)(out+8) =
- Te4[(s2 ) & 0xff] ^
- Te4[(s3 >> 8) & 0xff] << 8 ^
- Te4[(s0 >> 16) & 0xff] << 16 ^
- Te4[(s1 >> 24) ] << 24 ^
- rk[2];
- *(u32*)(out+12) =
- Te4[(s3 ) & 0xff] ^
- Te4[(s0 >> 8) & 0xff] << 8 ^
- Te4[(s1 >> 16) & 0xff] << 16 ^
- Te4[(s2 >> 24) ] << 24 ^
- rk[3];
+ *(u32*)(out+0) =
+ Te4[(s0 ) & 0xff] ^
+ Te4[(s1 >> 8) & 0xff] << 8 ^
+ Te4[(s2 >> 16) & 0xff] << 16 ^
+ Te4[(s3 >> 24) ] << 24 ^
+ rk[0];
+ *(u32*)(out+4) =
+ Te4[(s1 ) & 0xff] ^
+ Te4[(s2 >> 8) & 0xff] << 8 ^
+ Te4[(s3 >> 16) & 0xff] << 16 ^
+ Te4[(s0 >> 24) ] << 24 ^
+ rk[1];
+ *(u32*)(out+8) =
+ Te4[(s2 ) & 0xff] ^
+ Te4[(s3 >> 8) & 0xff] << 8 ^
+ Te4[(s0 >> 16) & 0xff] << 16 ^
+ Te4[(s1 >> 24) ] << 24 ^
+ rk[2];
+ *(u32*)(out+12) =
+ Te4[(s3 ) & 0xff] ^
+ Te4[(s0 >> 8) & 0xff] << 8 ^
+ Te4[(s1 >> 16) & 0xff] << 16 ^
+ Te4[(s2 >> 24) ] << 24 ^
+ rk[3];
#else
- *(u32*)(out+0) =
- (Te2[(s0 ) & 0xff] & 0x000000ffU) ^
- (Te3[(s1 >> 8) & 0xff] & 0x0000ff00U) ^
- (Te0[(s2 >> 16) & 0xff] & 0x00ff0000U) ^
- (Te1[(s3 >> 24) ] & 0xff000000U) ^
- rk[0];
- *(u32*)(out+4) =
- (Te2[(s1 ) & 0xff] & 0x000000ffU) ^
- (Te3[(s2 >> 8) & 0xff] & 0x0000ff00U) ^
- (Te0[(s3 >> 16) & 0xff] & 0x00ff0000U) ^
- (Te1[(s0 >> 24) ] & 0xff000000U) ^
- rk[1];
- *(u32*)(out+8) =
- (Te2[(s2 ) & 0xff] & 0x000000ffU) ^
- (Te3[(s3 >> 8) & 0xff] & 0x0000ff00U) ^
- (Te0[(s0 >> 16) & 0xff] & 0x00ff0000U) ^
- (Te1[(s1 >> 24) ] & 0xff000000U) ^
- rk[2];
- *(u32*)(out+12) =
- (Te2[(s3 ) & 0xff] & 0x000000ffU) ^
- (Te3[(s0 >> 8) & 0xff] & 0x0000ff00U) ^
- (Te0[(s1 >> 16) & 0xff] & 0x00ff0000U) ^
- (Te1[(s2 >> 24) ] & 0xff000000U) ^
- rk[3];
+ *(u32*)(out+0) =
+ (Te2[(s0 ) & 0xff] & 0x000000ffU) ^
+ (Te3[(s1 >> 8) & 0xff] & 0x0000ff00U) ^
+ (Te0[(s2 >> 16) & 0xff] & 0x00ff0000U) ^
+ (Te1[(s3 >> 24) ] & 0xff000000U) ^
+ rk[0];
+ *(u32*)(out+4) =
+ (Te2[(s1 ) & 0xff] & 0x000000ffU) ^
+ (Te3[(s2 >> 8) & 0xff] & 0x0000ff00U) ^
+ (Te0[(s3 >> 16) & 0xff] & 0x00ff0000U) ^
+ (Te1[(s0 >> 24) ] & 0xff000000U) ^
+ rk[1];
+ *(u32*)(out+8) =
+ (Te2[(s2 ) & 0xff] & 0x000000ffU) ^
+ (Te3[(s3 >> 8) & 0xff] & 0x0000ff00U) ^
+ (Te0[(s0 >> 16) & 0xff] & 0x00ff0000U) ^
+ (Te1[(s1 >> 24) ] & 0xff000000U) ^
+ rk[2];
+ *(u32*)(out+12) =
+ (Te2[(s3 ) & 0xff] & 0x000000ffU) ^
+ (Te3[(s0 >> 8) & 0xff] & 0x0000ff00U) ^
+ (Te0[(s1 >> 16) & 0xff] & 0x00ff0000U) ^
+ (Te1[(s2 >> 24) ] & 0xff000000U) ^
+ rk[3];
#endif
}
* in and out can overlap
*/
void AES_decrypt(const unsigned char *in, unsigned char *out,
- const AES_KEY *key) {
+ const AES_KEY *key)
+{
- const u32 *rk;
- u32 s0, s1, s2, s3, t[4];
- int r;
+ const u32 *rk;
+ u32 s0, s1, s2, s3, t[4];
+ int r;
- assert(in && out && key);
- rk = key->rd_key;
+ 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];
+ /*
+ * 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];
#if defined(AES_COMPACT_IN_OUTER_ROUNDS)
- prefetch256(Td4);
+ prefetch256(Td4);
- t[0] = Td4[(s0 ) & 0xff] ^
- Td4[(s3 >> 8) & 0xff] << 8 ^
- Td4[(s2 >> 16) & 0xff] << 16 ^
- Td4[(s1 >> 24) ] << 24;
- t[1] = Td4[(s1 ) & 0xff] ^
- Td4[(s0 >> 8) & 0xff] << 8 ^
- Td4[(s3 >> 16) & 0xff] << 16 ^
- Td4[(s2 >> 24) ] << 24;
- t[2] = Td4[(s2 ) & 0xff] ^
- Td4[(s1 >> 8) & 0xff] << 8 ^
- Td4[(s0 >> 16) & 0xff] << 16 ^
- Td4[(s3 >> 24) ] << 24;
- t[3] = Td4[(s3 ) & 0xff] ^
- Td4[(s2 >> 8) & 0xff] << 8 ^
- Td4[(s1 >> 16) & 0xff] << 16 ^
- Td4[(s0 >> 24) ] << 24;
+ t[0] = Td4[(s0 ) & 0xff] ^
+ Td4[(s3 >> 8) & 0xff] << 8 ^
+ Td4[(s2 >> 16) & 0xff] << 16 ^
+ Td4[(s1 >> 24) ] << 24;
+ t[1] = Td4[(s1 ) & 0xff] ^
+ Td4[(s0 >> 8) & 0xff] << 8 ^
+ Td4[(s3 >> 16) & 0xff] << 16 ^
+ Td4[(s2 >> 24) ] << 24;
+ t[2] = Td4[(s2 ) & 0xff] ^
+ Td4[(s1 >> 8) & 0xff] << 8 ^
+ Td4[(s0 >> 16) & 0xff] << 16 ^
+ Td4[(s3 >> 24) ] << 24;
+ t[3] = Td4[(s3 ) & 0xff] ^
+ Td4[(s2 >> 8) & 0xff] << 8 ^
+ Td4[(s1 >> 16) & 0xff] << 16 ^
+ Td4[(s0 >> 24) ] << 24;
- /* now do the linear transform using words */
- { int i;
- u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m;
+ /* now do the linear transform using words */
+ {
+ int i;
+ u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m;
- for (i = 0; i < 4; i++) {
- tp1 = t[i];
- m = tp1 & 0x80808080;
- tp2 = ((tp1 & 0x7f7f7f7f) << 1) ^
- ((m - (m >> 7)) & 0x1b1b1b1b);
- m = tp2 & 0x80808080;
- tp4 = ((tp2 & 0x7f7f7f7f) << 1) ^
- ((m - (m >> 7)) & 0x1b1b1b1b);
- m = tp4 & 0x80808080;
- tp8 = ((tp4 & 0x7f7f7f7f) << 1) ^
- ((m - (m >> 7)) & 0x1b1b1b1b);
- tp9 = tp8 ^ tp1;
- tpb = tp9 ^ tp2;
- tpd = tp9 ^ tp4;
- tpe = tp8 ^ tp4 ^ tp2;
+ for (i = 0; i < 4; i++) {
+ tp1 = t[i];
+ m = tp1 & 0x80808080;
+ tp2 = ((tp1 & 0x7f7f7f7f) << 1) ^
+ ((m - (m >> 7)) & 0x1b1b1b1b);
+ m = tp2 & 0x80808080;
+ tp4 = ((tp2 & 0x7f7f7f7f) << 1) ^
+ ((m - (m >> 7)) & 0x1b1b1b1b);
+ m = tp4 & 0x80808080;
+ tp8 = ((tp4 & 0x7f7f7f7f) << 1) ^
+ ((m - (m >> 7)) & 0x1b1b1b1b);
+ tp9 = tp8 ^ tp1;
+ tpb = tp9 ^ tp2;
+ tpd = tp9 ^ tp4;
+ tpe = tp8 ^ tp4 ^ tp2;
#if defined(ROTATE)
- t[i] = tpe ^ ROTATE(tpd,16) ^
- ROTATE(tp9,8) ^ ROTATE(tpb,24);
+ t[i] = tpe ^ ROTATE(tpd,16) ^
+ ROTATE(tp9,8) ^ ROTATE(tpb,24);
#else
- t[i] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^
- (tp9 >> 24) ^ (tp9 << 8) ^
- (tpb >> 8) ^ (tpb << 24);
+ t[i] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^
+ (tp9 >> 24) ^ (tp9 << 8) ^
+ (tpb >> 8) ^ (tpb << 24);
#endif
- t[i] ^= rk[4+i];
- }
- }
+ t[i] ^= rk[4+i];
+ }
+ }
#else
- t[0] = Td0[(s0 ) & 0xff] ^
- Td1[(s3 >> 8) & 0xff] ^
- Td2[(s2 >> 16) & 0xff] ^
- Td3[(s1 >> 24) ] ^
- rk[4];
- t[1] = Td0[(s1 ) & 0xff] ^
- Td1[(s0 >> 8) & 0xff] ^
- Td2[(s3 >> 16) & 0xff] ^
- Td3[(s2 >> 24) ] ^
- rk[5];
- t[2] = Td0[(s2 ) & 0xff] ^
- Td1[(s1 >> 8) & 0xff] ^
- Td2[(s0 >> 16) & 0xff] ^
- Td3[(s3 >> 24) ] ^
- rk[6];
- t[3] = Td0[(s3 ) & 0xff] ^
- Td1[(s2 >> 8) & 0xff] ^
- Td2[(s1 >> 16) & 0xff] ^
- Td3[(s0 >> 24) ] ^
- rk[7];
+ t[0] = Td0[(s0 ) & 0xff] ^
+ Td1[(s3 >> 8) & 0xff] ^
+ Td2[(s2 >> 16) & 0xff] ^
+ Td3[(s1 >> 24) ] ^
+ rk[4];
+ t[1] = Td0[(s1 ) & 0xff] ^
+ Td1[(s0 >> 8) & 0xff] ^
+ Td2[(s3 >> 16) & 0xff] ^
+ Td3[(s2 >> 24) ] ^
+ rk[5];
+ t[2] = Td0[(s2 ) & 0xff] ^
+ Td1[(s1 >> 8) & 0xff] ^
+ Td2[(s0 >> 16) & 0xff] ^
+ Td3[(s3 >> 24) ] ^
+ rk[6];
+ t[3] = Td0[(s3 ) & 0xff] ^
+ Td1[(s2 >> 8) & 0xff] ^
+ Td2[(s1 >> 16) & 0xff] ^
+ Td3[(s0 >> 24) ] ^
+ rk[7];
#endif
- s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
+ s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
/*
* Nr - 2 full rounds:
*/
for (rk+=8,r=key->rounds-2; r>0; rk+=4,r--) {
#if defined(AES_COMPACT_IN_INNER_ROUNDS)
- t[0] = Td4[(s0 ) & 0xff] ^
- Td4[(s3 >> 8) & 0xff] << 8 ^
- Td4[(s2 >> 16) & 0xff] << 16 ^
- Td4[(s1 >> 24) ] << 24;
- t[1] = Td4[(s1 ) & 0xff] ^
- Td4[(s0 >> 8) & 0xff] << 8 ^
- Td4[(s3 >> 16) & 0xff] << 16 ^
- Td4[(s2 >> 24) ] << 24;
- t[2] = Td4[(s2 ) & 0xff] ^
- Td4[(s1 >> 8) & 0xff] << 8 ^
- Td4[(s0 >> 16) & 0xff] << 16 ^
- Td4[(s3 >> 24) ] << 24;
- t[3] = Td4[(s3 ) & 0xff] ^
- Td4[(s2 >> 8) & 0xff] << 8 ^
- Td4[(s1 >> 16) & 0xff] << 16 ^
- Td4[(s0 >> 24) ] << 24;
+ t[0] = Td4[(s0 ) & 0xff] ^
+ Td4[(s3 >> 8) & 0xff] << 8 ^
+ Td4[(s2 >> 16) & 0xff] << 16 ^
+ Td4[(s1 >> 24) ] << 24;
+ t[1] = Td4[(s1 ) & 0xff] ^
+ Td4[(s0 >> 8) & 0xff] << 8 ^
+ Td4[(s3 >> 16) & 0xff] << 16 ^
+ Td4[(s2 >> 24) ] << 24;
+ t[2] = Td4[(s2 ) & 0xff] ^
+ Td4[(s1 >> 8) & 0xff] << 8 ^
+ Td4[(s0 >> 16) & 0xff] << 16 ^
+ Td4[(s3 >> 24) ] << 24;
+ t[3] = Td4[(s3 ) & 0xff] ^
+ Td4[(s2 >> 8) & 0xff] << 8 ^
+ Td4[(s1 >> 16) & 0xff] << 16 ^
+ Td4[(s0 >> 24) ] << 24;
- /* now do the linear transform using words */
- { int i;
- u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m;
+ /* now do the linear transform using words */
+ {
+ int i;
+ u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m;
- for (i = 0; i < 4; i++) {
- tp1 = t[i];
- m = tp1 & 0x80808080;
- tp2 = ((tp1 & 0x7f7f7f7f) << 1) ^
- ((m - (m >> 7)) & 0x1b1b1b1b);
- m = tp2 & 0x80808080;
- tp4 = ((tp2 & 0x7f7f7f7f) << 1) ^
- ((m - (m >> 7)) & 0x1b1b1b1b);
- m = tp4 & 0x80808080;
- tp8 = ((tp4 & 0x7f7f7f7f) << 1) ^
- ((m - (m >> 7)) & 0x1b1b1b1b);
- tp9 = tp8 ^ tp1;
- tpb = tp9 ^ tp2;
- tpd = tp9 ^ tp4;
- tpe = tp8 ^ tp4 ^ tp2;
+ for (i = 0; i < 4; i++) {
+ tp1 = t[i];
+ m = tp1 & 0x80808080;
+ tp2 = ((tp1 & 0x7f7f7f7f) << 1) ^
+ ((m - (m >> 7)) & 0x1b1b1b1b);
+ m = tp2 & 0x80808080;
+ tp4 = ((tp2 & 0x7f7f7f7f) << 1) ^
+ ((m - (m >> 7)) & 0x1b1b1b1b);
+ m = tp4 & 0x80808080;
+ tp8 = ((tp4 & 0x7f7f7f7f) << 1) ^
+ ((m - (m >> 7)) & 0x1b1b1b1b);
+ tp9 = tp8 ^ tp1;
+ tpb = tp9 ^ tp2;
+ tpd = tp9 ^ tp4;
+ tpe = tp8 ^ tp4 ^ tp2;
#if defined(ROTATE)
- t[i] = tpe ^ ROTATE(tpd,16) ^
- ROTATE(tp9,8) ^ ROTATE(tpb,24);
+ t[i] = tpe ^ ROTATE(tpd,16) ^
+ ROTATE(tp9,8) ^ ROTATE(tpb,24);
#else
- t[i] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^
- (tp9 >> 24) ^ (tp9 << 8) ^
- (tpb >> 8) ^ (tpb << 24);
+ t[i] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^
+ (tp9 >> 24) ^ (tp9 << 8) ^
+ (tpb >> 8) ^ (tpb << 24);
#endif
- t[i] ^= rk[i];
- }
- }
+ t[i] ^= rk[i];
+ }
+ }
#else
- t[0] = Td0[(s0 ) & 0xff] ^
- Td1[(s3 >> 8) & 0xff] ^
- Td2[(s2 >> 16) & 0xff] ^
- Td3[(s1 >> 24) ] ^
- rk[0];
- t[1] = Td0[(s1 ) & 0xff] ^
- Td1[(s0 >> 8) & 0xff] ^
- Td2[(s3 >> 16) & 0xff] ^
- Td3[(s2 >> 24) ] ^
- rk[1];
- t[2] = Td0[(s2 ) & 0xff] ^
- Td1[(s1 >> 8) & 0xff] ^
- Td2[(s0 >> 16) & 0xff] ^
- Td3[(s3 >> 24) ] ^
- rk[2];
- t[3] = Td0[(s3 ) & 0xff] ^
- Td1[(s2 >> 8) & 0xff] ^
- Td2[(s1 >> 16) & 0xff] ^
- Td3[(s0 >> 24) ] ^
- rk[3];
+ t[0] = Td0[(s0 ) & 0xff] ^
+ Td1[(s3 >> 8) & 0xff] ^
+ Td2[(s2 >> 16) & 0xff] ^
+ Td3[(s1 >> 24) ] ^
+ rk[0];
+ t[1] = Td0[(s1 ) & 0xff] ^
+ Td1[(s0 >> 8) & 0xff] ^
+ Td2[(s3 >> 16) & 0xff] ^
+ Td3[(s2 >> 24) ] ^
+ rk[1];
+ t[2] = Td0[(s2 ) & 0xff] ^
+ Td1[(s1 >> 8) & 0xff] ^
+ Td2[(s0 >> 16) & 0xff] ^
+ Td3[(s3 >> 24) ] ^
+ rk[2];
+ t[3] = Td0[(s3 ) & 0xff] ^
+ Td1[(s2 >> 8) & 0xff] ^
+ Td2[(s1 >> 16) & 0xff] ^
+ Td3[(s0 >> 24) ] ^
+ rk[3];
#endif
- s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
+ s0 = t[0]; s1 = t[1]; s2 = t[2]; s3 = t[3];
}
/*
- * apply last round and
- * map cipher state to byte array block:
- */
- prefetch256(Td4);
+ * apply last round and
+ * map cipher state to byte array block:
+ */
+ prefetch256(Td4);
- *(u32*)(out+0) =
- (Td4[(s0 ) & 0xff]) ^
- (Td4[(s3 >> 8) & 0xff] << 8) ^
- (Td4[(s2 >> 16) & 0xff] << 16) ^
- (Td4[(s1 >> 24) ] << 24) ^
- rk[0];
- *(u32*)(out+4) =
- (Td4[(s1 ) & 0xff]) ^
- (Td4[(s0 >> 8) & 0xff] << 8) ^
- (Td4[(s3 >> 16) & 0xff] << 16) ^
- (Td4[(s2 >> 24) ] << 24) ^
- rk[1];
- *(u32*)(out+8) =
- (Td4[(s2 ) & 0xff]) ^
- (Td4[(s1 >> 8) & 0xff] << 8) ^
- (Td4[(s0 >> 16) & 0xff] << 16) ^
- (Td4[(s3 >> 24) ] << 24) ^
- rk[2];
- *(u32*)(out+12) =
- (Td4[(s3 ) & 0xff]) ^
- (Td4[(s2 >> 8) & 0xff] << 8) ^
- (Td4[(s1 >> 16) & 0xff] << 16) ^
- (Td4[(s0 >> 24) ] << 24) ^
- rk[3];
+ *(u32*)(out+0) =
+ (Td4[(s0 ) & 0xff]) ^
+ (Td4[(s3 >> 8) & 0xff] << 8) ^
+ (Td4[(s2 >> 16) & 0xff] << 16) ^
+ (Td4[(s1 >> 24) ] << 24) ^
+ rk[0];
+ *(u32*)(out+4) =
+ (Td4[(s1 ) & 0xff]) ^
+ (Td4[(s0 >> 8) & 0xff] << 8) ^
+ (Td4[(s3 >> 16) & 0xff] << 16) ^
+ (Td4[(s2 >> 24) ] << 24) ^
+ rk[1];
+ *(u32*)(out+8) =
+ (Td4[(s2 ) & 0xff]) ^
+ (Td4[(s1 >> 8) & 0xff] << 8) ^
+ (Td4[(s0 >> 16) & 0xff] << 16) ^
+ (Td4[(s3 >> 24) ] << 24) ^
+ rk[2];
+ *(u32*)(out+12) =
+ (Td4[(s3 ) & 0xff]) ^
+ (Td4[(s2 >> 8) & 0xff] << 8) ^
+ (Td4[(s1 >> 16) & 0xff] << 16) ^
+ (Td4[(s0 >> 24) ] << 24) ^
+ rk[3];
}
projects / openssl / commitdiff