diff options
Diffstat (limited to 'crypto')
-rw-r--r-- | crypto/aes/aes_core.c | 804 |
1 files changed, 404 insertions, 400 deletions
diff --git a/crypto/aes/aes_core.c b/crypto/aes/aes_core.c index cf61ab2e57..913224203f 100644 --- a/crypto/aes/aes_core.c +++ b/crypto/aes/aes_core.c @@ -617,161 +617,163 @@ static const u8 Td4[256] = { 0xe1U, 0x69U, 0x14U, 0x63U, 0x55U, 0x21U, 0x0cU, 0x7dU, }; static const u32 rcon[] = { - 0x01000000, 0x02000000, 0x04000000, 0x08000000, - 0x10000000, 0x20000000, 0x40000000, 0x80000000, - 0x1B000000, 0x36000000, /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */ + 0x01000000, 0x02000000, 0x04000000, 0x08000000, + 0x10000000, 0x20000000, 0x40000000, 0x80000000, + 0x1B000000, 0x36000000, /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */ }; /** * 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] ^ - (Te2[(temp >> 16) & 0xff] & 0xff000000) ^ - (Te3[(temp >> 8) & 0xff] & 0x00ff0000) ^ - (Te0[(temp ) & 0xff] & 0x0000ff00) ^ - (Te1[(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] ^ - (Te2[(temp >> 16) & 0xff] & 0xff000000) ^ - (Te3[(temp >> 8) & 0xff] & 0x00ff0000) ^ - (Te0[(temp ) & 0xff] & 0x0000ff00) ^ - (Te1[(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] ^ - (Te2[(temp >> 16) & 0xff] & 0xff000000) ^ - (Te3[(temp >> 8) & 0xff] & 0x00ff0000) ^ - (Te0[(temp ) & 0xff] & 0x0000ff00) ^ - (Te1[(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] ^ - (Te2[(temp >> 24) ] & 0xff000000) ^ - (Te3[(temp >> 16) & 0xff] & 0x00ff0000) ^ - (Te0[(temp >> 8) & 0xff] & 0x0000ff00) ^ - (Te1[(temp ) & 0xff] & 0x000000ff); - 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] ^ + (Te2[(temp >> 16) & 0xff] & 0xff000000) ^ + (Te3[(temp >> 8) & 0xff] & 0x00ff0000) ^ + (Te0[(temp ) & 0xff] & 0x0000ff00) ^ + (Te1[(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] ^ + (Te2[(temp >> 16) & 0xff] & 0xff000000) ^ + (Te3[(temp >> 8) & 0xff] & 0x00ff0000) ^ + (Te0[(temp ) & 0xff] & 0x0000ff00) ^ + (Te1[(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] ^ + (Te2[(temp >> 16) & 0xff] & 0xff000000) ^ + (Te3[(temp >> 8) & 0xff] & 0x00ff0000) ^ + (Te0[(temp ) & 0xff] & 0x0000ff00) ^ + (Te1[(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] ^ + (Te2[(temp >> 24) ] & 0xff000000) ^ + (Te3[(temp >> 16) & 0xff] & 0x00ff0000) ^ + (Te0[(temp >> 8) & 0xff] & 0x0000ff00) ^ + (Te1[(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; + 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; - rk[0] = - Td0[Te1[(rk[0] >> 24) ] & 0xff] ^ - Td1[Te1[(rk[0] >> 16) & 0xff] & 0xff] ^ - Td2[Te1[(rk[0] >> 8) & 0xff] & 0xff] ^ - Td3[Te1[(rk[0] ) & 0xff] & 0xff]; - rk[1] = - Td0[Te1[(rk[1] >> 24) ] & 0xff] ^ - Td1[Te1[(rk[1] >> 16) & 0xff] & 0xff] ^ - Td2[Te1[(rk[1] >> 8) & 0xff] & 0xff] ^ - Td3[Te1[(rk[1] ) & 0xff] & 0xff]; - rk[2] = - Td0[Te1[(rk[2] >> 24) ] & 0xff] ^ - Td1[Te1[(rk[2] >> 16) & 0xff] & 0xff] ^ - Td2[Te1[(rk[2] >> 8) & 0xff] & 0xff] ^ - Td3[Te1[(rk[2] ) & 0xff] & 0xff]; - rk[3] = - Td0[Te1[(rk[3] >> 24) ] & 0xff] ^ - Td1[Te1[(rk[3] >> 16) & 0xff] & 0xff] ^ - Td2[Te1[(rk[3] >> 8) & 0xff] & 0xff] ^ - Td3[Te1[(rk[3] ) & 0xff] & 0xff]; - } - return 0; + /* 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[Te1[(rk[0] >> 24) ] & 0xff] ^ + Td1[Te1[(rk[0] >> 16) & 0xff] & 0xff] ^ + Td2[Te1[(rk[0] >> 8) & 0xff] & 0xff] ^ + Td3[Te1[(rk[0] ) & 0xff] & 0xff]; + rk[1] = + Td0[Te1[(rk[1] >> 24) ] & 0xff] ^ + Td1[Te1[(rk[1] >> 16) & 0xff] & 0xff] ^ + Td2[Te1[(rk[1] >> 8) & 0xff] & 0xff] ^ + Td3[Te1[(rk[1] ) & 0xff] & 0xff]; + rk[2] = + Td0[Te1[(rk[2] >> 24) ] & 0xff] ^ + Td1[Te1[(rk[2] >> 16) & 0xff] & 0xff] ^ + Td2[Te1[(rk[2] >> 8) & 0xff] & 0xff] ^ + Td3[Te1[(rk[2] ) & 0xff] & 0xff]; + rk[3] = + Td0[Te1[(rk[3] >> 24) ] & 0xff] ^ + Td1[Te1[(rk[3] >> 16) & 0xff] & 0xff] ^ + Td2[Te1[(rk[3] >> 8) & 0xff] & 0xff] ^ + Td3[Te1[(rk[3] ) & 0xff] & 0xff]; + } + return 0; } /* @@ -779,71 +781,71 @@ int AES_set_decrypt_key(const unsigned char *userKey, const int bits, * 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, t0, t1, t2, t3; + const u32 *rk; + u32 s0, s1, s2, s3, t0, t1, t2, t3; #ifndef FULL_UNROLL - int r; + int r; #endif /* ?FULL_UNROLL */ - 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]; #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]; + /* 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]; @@ -932,37 +934,37 @@ void AES_encrypt(const unsigned char *in, unsigned char *out, } #endif /* ?FULL_UNROLL */ /* - * apply last round and - * map cipher state to byte array block: - */ - s0 = - (Te2[(t0 >> 24) ] & 0xff000000) ^ - (Te3[(t1 >> 16) & 0xff] & 0x00ff0000) ^ - (Te0[(t2 >> 8) & 0xff] & 0x0000ff00) ^ - (Te1[(t3 ) & 0xff] & 0x000000ff) ^ - rk[0]; - PUTU32(out , s0); - s1 = - (Te2[(t1 >> 24) ] & 0xff000000) ^ - (Te3[(t2 >> 16) & 0xff] & 0x00ff0000) ^ - (Te0[(t3 >> 8) & 0xff] & 0x0000ff00) ^ - (Te1[(t0 ) & 0xff] & 0x000000ff) ^ - rk[1]; - PUTU32(out + 4, s1); - s2 = - (Te2[(t2 >> 24) ] & 0xff000000) ^ - (Te3[(t3 >> 16) & 0xff] & 0x00ff0000) ^ - (Te0[(t0 >> 8) & 0xff] & 0x0000ff00) ^ - (Te1[(t1 ) & 0xff] & 0x000000ff) ^ - rk[2]; - PUTU32(out + 8, s2); - s3 = - (Te2[(t3 >> 24) ] & 0xff000000) ^ - (Te3[(t0 >> 16) & 0xff] & 0x00ff0000) ^ - (Te0[(t1 >> 8) & 0xff] & 0x0000ff00) ^ - (Te1[(t2 ) & 0xff] & 0x000000ff) ^ - rk[3]; - PUTU32(out + 12, s3); + * apply last round and + * map cipher state to byte array block: + */ + s0 = + (Te2[(t0 >> 24) ] & 0xff000000) ^ + (Te3[(t1 >> 16) & 0xff] & 0x00ff0000) ^ + (Te0[(t2 >> 8) & 0xff] & 0x0000ff00) ^ + (Te1[(t3 ) & 0xff] & 0x000000ff) ^ + rk[0]; + PUTU32(out , s0); + s1 = + (Te2[(t1 >> 24) ] & 0xff000000) ^ + (Te3[(t2 >> 16) & 0xff] & 0x00ff0000) ^ + (Te0[(t3 >> 8) & 0xff] & 0x0000ff00) ^ + (Te1[(t0 ) & 0xff] & 0x000000ff) ^ + rk[1]; + PUTU32(out + 4, s1); + s2 = + (Te2[(t2 >> 24) ] & 0xff000000) ^ + (Te3[(t3 >> 16) & 0xff] & 0x00ff0000) ^ + (Te0[(t0 >> 8) & 0xff] & 0x0000ff00) ^ + (Te1[(t1 ) & 0xff] & 0x000000ff) ^ + rk[2]; + PUTU32(out + 8, s2); + s3 = + (Te2[(t3 >> 24) ] & 0xff000000) ^ + (Te3[(t0 >> 16) & 0xff] & 0x00ff0000) ^ + (Te0[(t1 >> 8) & 0xff] & 0x0000ff00) ^ + (Te1[(t2 ) & 0xff] & 0x000000ff) ^ + rk[3]; + PUTU32(out + 12, s3); } /* @@ -970,21 +972,22 @@ void AES_encrypt(const unsigned char *in, unsigned char *out, * 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, t0, t1, t2, t3; + const u32 *rk; + u32 s0, s1, s2, s3, t0, t1, t2, t3; #ifndef FULL_UNROLL - int r; + int r; #endif /* ?FULL_UNROLL */ - 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: - */ + /* + * 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]; @@ -1059,7 +1062,7 @@ void AES_decrypt(const unsigned char *in, unsigned char *out, t3 = Td0[s3 >> 24] ^ Td1[(s2 >> 16) & 0xff] ^ Td2[(s1 >> 8) & 0xff] ^ Td3[s0 & 0xff] ^ rk[55]; } } - rk += key->rounds << 2; + rk += key->rounds << 2; #else /* !FULL_UNROLL */ /* * Nr - 1 full rounds: @@ -1123,37 +1126,37 @@ void AES_decrypt(const unsigned char *in, unsigned char *out, } #endif /* ?FULL_UNROLL */ /* - * apply last round and - * map cipher state to byte array block: - */ - s0 = - (Td4[(t0 >> 24) ] << 24) ^ - (Td4[(t3 >> 16) & 0xff] << 16) ^ - (Td4[(t2 >> 8) & 0xff] << 8) ^ - (Td4[(t1 ) & 0xff]) ^ - rk[0]; - PUTU32(out , s0); - s1 = - (Td4[(t1 >> 24) ] << 24) ^ - (Td4[(t0 >> 16) & 0xff] << 16) ^ - (Td4[(t3 >> 8) & 0xff] << 8) ^ - (Td4[(t2 ) & 0xff]) ^ - rk[1]; - PUTU32(out + 4, s1); - s2 = - (Td4[(t2 >> 24) ] << 24) ^ - (Td4[(t1 >> 16) & 0xff] << 16) ^ - (Td4[(t0 >> 8) & 0xff] << 8) ^ - (Td4[(t3 ) & 0xff]) ^ - rk[2]; - PUTU32(out + 8, s2); - s3 = - (Td4[(t3 >> 24) ] << 24) ^ - (Td4[(t2 >> 16) & 0xff] << 16) ^ - (Td4[(t1 >> 8) & 0xff] << 8) ^ - (Td4[(t0 ) & 0xff]) ^ - rk[3]; - PUTU32(out + 12, s3); + * apply last round and + * map cipher state to byte array block: + */ + s0 = + (Td4[(t0 >> 24) ] << 24) ^ + (Td4[(t3 >> 16) & 0xff] << 16) ^ + (Td4[(t2 >> 8) & 0xff] << 8) ^ + (Td4[(t1 ) & 0xff]) ^ + rk[0]; + PUTU32(out , s0); + s1 = + (Td4[(t1 >> 24) ] << 24) ^ + (Td4[(t0 >> 16) & 0xff] << 16) ^ + (Td4[(t3 >> 8) & 0xff] << 8) ^ + (Td4[(t2 ) & 0xff]) ^ + rk[1]; + PUTU32(out + 4, s1); + s2 = + (Td4[(t2 >> 24) ] << 24) ^ + (Td4[(t1 >> 16) & 0xff] << 16) ^ + (Td4[(t0 >> 8) & 0xff] << 8) ^ + (Td4[(t3 ) & 0xff]) ^ + rk[2]; + PUTU32(out + 8, s2); + s3 = + (Td4[(t3 >> 24) ] << 24) ^ + (Td4[(t2 >> 16) & 0xff] << 16) ^ + (Td4[(t1 >> 8) & 0xff] << 8) ^ + (Td4[(t0 ) & 0xff]) ^ + rk[3]; + PUTU32(out + 12, s3); } #else /* AES_ASM */ @@ -1193,166 +1196,167 @@ static const u8 Te4[256] = { 0x41U, 0x99U, 0x2dU, 0x0fU, 0xb0U, 0x54U, 0xbbU, 0x16U }; static const u32 rcon[] = { - 0x01000000, 0x02000000, 0x04000000, 0x08000000, - 0x10000000, 0x20000000, 0x40000000, 0x80000000, - 0x1B000000, 0x36000000, /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */ + 0x01000000, 0x02000000, 0x04000000, 0x08000000, + 0x10000000, 0x20000000, 0x40000000, 0x80000000, + 0x1B000000, 0x36000000, /* for 128-bit blocks, Rijndael never uses more than 10 rcon values */ }; /** * Expand the cipher key into the encryption key schedule. */ int AES_set_encrypt_key(const unsigned char *userKey, const int bits, - AES_KEY *key) { - u32 *rk; + AES_KEY *key) +{ + u32 *rk; int i = 0; - u32 temp; + 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 >> 16) & 0xff] << 24) ^ - (Te4[(temp >> 8) & 0xff] << 16) ^ - (Te4[(temp ) & 0xff] << 8) ^ - (Te4[(temp >> 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 >> 16) & 0xff] << 24) ^ - (Te4[(temp >> 8) & 0xff] << 16) ^ - (Te4[(temp ) & 0xff] << 8) ^ - (Te4[(temp >> 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 >> 16) & 0xff] << 24) ^ - (Te4[(temp >> 8) & 0xff] << 16) ^ - (Te4[(temp ) & 0xff] << 8) ^ - (Te4[(temp >> 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 >> 24) ] << 24) ^ - (Te4[(temp >> 16) & 0xff] << 16) ^ - (Te4[(temp >> 8) & 0xff] << 8) ^ - (Te4[(temp ) & 0xff]); - 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 >> 16) & 0xff] << 24) ^ + (Te4[(temp >> 8) & 0xff] << 16) ^ + (Te4[(temp ) & 0xff] << 8) ^ + (Te4[(temp >> 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 >> 16) & 0xff] << 24) ^ + (Te4[(temp >> 8) & 0xff] << 16) ^ + (Te4[(temp ) & 0xff] << 8) ^ + (Te4[(temp >> 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 >> 16) & 0xff] << 24) ^ + (Te4[(temp >> 8) & 0xff] << 16) ^ + (Te4[(temp ) & 0xff] << 8) ^ + (Te4[(temp >> 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 >> 24) ] << 24) ^ + (Te4[(temp >> 16) & 0xff] << 16) ^ + (Te4[(temp >> 8) & 0xff] << 8) ^ + (Te4[(temp ) & 0xff]); + 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; - for (j = 0; j < 4; j++) { - u32 tp1, tp2, tp4, tp8, tp9, tpb, tpd, tpe, m; + /* 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; + 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(tp9,24) ^ ROTATE(tpb,8); + rk[j] = tpe ^ ROTATE(tpd,16) ^ + ROTATE(tp9,24) ^ ROTATE(tpb,8); #else - rk[j] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^ - (tp9 >> 8) ^ (tp9 << 24) ^ - (tpb >> 24) ^ (tpb << 8); + rk[j] = tpe ^ (tpd >> 16) ^ (tpd << 16) ^ + (tp9 >> 8) ^ (tp9 << 24) ^ + (tpb >> 24) ^ (tpb << 8); #endif - } - } - return 0; + } + } + return 0; } #endif /* AES_ASM */ |