| /* LibTomCrypt, modular cryptographic library -- Tom St Denis |
| * |
| * LibTomCrypt is a library that provides various cryptographic |
| * algorithms in a highly modular and flexible manner. |
| * |
| * The library is free for all purposes without any express |
| * guarantee it works. |
| * |
| * Tom St Denis, tomstdenis@gmail.com, http://libtomcrypt.com |
| */ |
| |
| /* AES implementation by Tom St Denis |
| * |
| * Derived from the Public Domain source code by |
| |
| --- |
| * rijndael-alg-fst.c |
| * |
| * @version 3.0 (December 2000) |
| * |
| * Optimised ANSI C code for the Rijndael cipher (now AES) |
| * |
| * @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be> |
| * @author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be> |
| * @author Paulo Barreto <paulo.barreto@terra.com.br> |
| --- |
| */ |
| /** |
| @file aes.c |
| Implementation of AES |
| */ |
| |
| #include "tomcrypt.h" |
| |
| #ifdef RIJNDAEL |
| |
| #ifndef ENCRYPT_ONLY |
| |
| #define SETUP rijndael_setup |
| #define ECB_ENC rijndael_ecb_encrypt |
| #define ECB_DEC rijndael_ecb_decrypt |
| #define ECB_DONE rijndael_done |
| #define ECB_TEST rijndael_test |
| #define ECB_KS rijndael_keysize |
| |
| const struct ltc_cipher_descriptor rijndael_desc = |
| { |
| "rijndael", |
| 6, |
| 16, 32, 16, 10, |
| SETUP, ECB_ENC, ECB_DEC, ECB_TEST, ECB_DONE, ECB_KS, |
| NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL |
| }; |
| |
| const struct ltc_cipher_descriptor aes_desc = |
| { |
| "aes", |
| 6, |
| 16, 32, 16, 10, |
| SETUP, ECB_ENC, ECB_DEC, ECB_TEST, ECB_DONE, ECB_KS, |
| NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL |
| }; |
| |
| #else |
| |
| #define SETUP rijndael_enc_setup |
| #define ECB_ENC rijndael_enc_ecb_encrypt |
| #define ECB_KS rijndael_enc_keysize |
| #define ECB_DONE rijndael_enc_done |
| |
| const struct ltc_cipher_descriptor rijndael_enc_desc = |
| { |
| "rijndael", |
| 6, |
| 16, 32, 16, 10, |
| SETUP, ECB_ENC, NULL, NULL, ECB_DONE, ECB_KS, |
| NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL |
| }; |
| |
| const struct ltc_cipher_descriptor aes_enc_desc = |
| { |
| "aes", |
| 6, |
| 16, 32, 16, 10, |
| SETUP, ECB_ENC, NULL, NULL, ECB_DONE, ECB_KS, |
| NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL |
| }; |
| |
| #endif |
| |
| #include "aes_tab.c" |
| |
| static ulong32 setup_mix(ulong32 temp) |
| { |
| return (Te4_3[byte(temp, 2)]) ^ |
| (Te4_2[byte(temp, 1)]) ^ |
| (Te4_1[byte(temp, 0)]) ^ |
| (Te4_0[byte(temp, 3)]); |
| } |
| |
| #ifndef ENCRYPT_ONLY |
| #ifdef LTC_SMALL_CODE |
| static ulong32 setup_mix2(ulong32 temp) |
| { |
| return Td0(255 & Te4[byte(temp, 3)]) ^ |
| Td1(255 & Te4[byte(temp, 2)]) ^ |
| Td2(255 & Te4[byte(temp, 1)]) ^ |
| Td3(255 & Te4[byte(temp, 0)]); |
| } |
| #endif |
| #endif |
| |
| /** |
| Initialize the AES (Rijndael) block cipher |
| @param key The symmetric key you wish to pass |
| @param keylen The key length in bytes |
| @param num_rounds The number of rounds desired (0 for default) |
| @param skey The key in as scheduled by this function. |
| @return CRYPT_OK if successful |
| */ |
| int SETUP(const unsigned char *key, int keylen, int num_rounds, symmetric_key *skey) |
| { |
| int i, j; |
| ulong32 temp, *rk; |
| #ifndef ENCRYPT_ONLY |
| ulong32 *rrk; |
| #endif |
| LTC_ARGCHK(key != NULL); |
| LTC_ARGCHK(skey != NULL); |
| |
| if (keylen != 16 && keylen != 24 && keylen != 32) { |
| return CRYPT_INVALID_KEYSIZE; |
| } |
| |
| if (num_rounds != 0 && num_rounds != (10 + ((keylen/8)-2)*2)) { |
| return CRYPT_INVALID_ROUNDS; |
| } |
| |
| skey->rijndael.Nr = 10 + ((keylen/8)-2)*2; |
| |
| /* setup the forward key */ |
| i = 0; |
| rk = skey->rijndael.eK; |
| LOAD32H(rk[0], key ); |
| LOAD32H(rk[1], key + 4); |
| LOAD32H(rk[2], key + 8); |
| LOAD32H(rk[3], key + 12); |
| if (keylen == 16) { |
| j = 44; |
| for (;;) { |
| temp = rk[3]; |
| rk[4] = rk[0] ^ setup_mix(temp) ^ rcon[i]; |
| rk[5] = rk[1] ^ rk[4]; |
| rk[6] = rk[2] ^ rk[5]; |
| rk[7] = rk[3] ^ rk[6]; |
| if (++i == 10) { |
| break; |
| } |
| rk += 4; |
| } |
| } else if (keylen == 24) { |
| j = 52; |
| LOAD32H(rk[4], key + 16); |
| LOAD32H(rk[5], key + 20); |
| for (;;) { |
| #ifdef _MSC_VER |
| temp = skey->rijndael.eK[rk - skey->rijndael.eK + 5]; |
| #else |
| temp = rk[5]; |
| #endif |
| rk[ 6] = rk[ 0] ^ setup_mix(temp) ^ rcon[i]; |
| rk[ 7] = rk[ 1] ^ rk[ 6]; |
| rk[ 8] = rk[ 2] ^ rk[ 7]; |
| rk[ 9] = rk[ 3] ^ rk[ 8]; |
| if (++i == 8) { |
| break; |
| } |
| rk[10] = rk[ 4] ^ rk[ 9]; |
| rk[11] = rk[ 5] ^ rk[10]; |
| rk += 6; |
| } |
| } else if (keylen == 32) { |
| j = 60; |
| LOAD32H(rk[4], key + 16); |
| LOAD32H(rk[5], key + 20); |
| LOAD32H(rk[6], key + 24); |
| LOAD32H(rk[7], key + 28); |
| for (;;) { |
| #ifdef _MSC_VER |
| temp = skey->rijndael.eK[rk - skey->rijndael.eK + 7]; |
| #else |
| temp = rk[7]; |
| #endif |
| rk[ 8] = rk[ 0] ^ setup_mix(temp) ^ rcon[i]; |
| rk[ 9] = rk[ 1] ^ rk[ 8]; |
| rk[10] = rk[ 2] ^ rk[ 9]; |
| rk[11] = rk[ 3] ^ rk[10]; |
| if (++i == 7) { |
| break; |
| } |
| temp = rk[11]; |
| rk[12] = rk[ 4] ^ setup_mix(RORc(temp, 8)); |
| rk[13] = rk[ 5] ^ rk[12]; |
| rk[14] = rk[ 6] ^ rk[13]; |
| rk[15] = rk[ 7] ^ rk[14]; |
| rk += 8; |
| } |
| } else { |
| /* this can't happen */ |
| return CRYPT_ERROR; |
| } |
| |
| #ifndef ENCRYPT_ONLY |
| /* setup the inverse key now */ |
| rk = skey->rijndael.dK; |
| rrk = skey->rijndael.eK + j - 4; |
| |
| /* apply the inverse MixColumn transform to all round keys but the first and the last: */ |
| /* copy first */ |
| *rk++ = *rrk++; |
| *rk++ = *rrk++; |
| *rk++ = *rrk++; |
| *rk = *rrk; |
| rk -= 3; rrk -= 3; |
| |
| for (i = 1; i < skey->rijndael.Nr; i++) { |
| rrk -= 4; |
| rk += 4; |
| #ifdef LTC_SMALL_CODE |
| temp = rrk[0]; |
| rk[0] = setup_mix2(temp); |
| temp = rrk[1]; |
| rk[1] = setup_mix2(temp); |
| temp = rrk[2]; |
| rk[2] = setup_mix2(temp); |
| temp = rrk[3]; |
| rk[3] = setup_mix2(temp); |
| #else |
| temp = rrk[0]; |
| rk[0] = |
| Tks0[byte(temp, 3)] ^ |
| Tks1[byte(temp, 2)] ^ |
| Tks2[byte(temp, 1)] ^ |
| Tks3[byte(temp, 0)]; |
| temp = rrk[1]; |
| rk[1] = |
| Tks0[byte(temp, 3)] ^ |
| Tks1[byte(temp, 2)] ^ |
| Tks2[byte(temp, 1)] ^ |
| Tks3[byte(temp, 0)]; |
| temp = rrk[2]; |
| rk[2] = |
| Tks0[byte(temp, 3)] ^ |
| Tks1[byte(temp, 2)] ^ |
| Tks2[byte(temp, 1)] ^ |
| Tks3[byte(temp, 0)]; |
| temp = rrk[3]; |
| rk[3] = |
| Tks0[byte(temp, 3)] ^ |
| Tks1[byte(temp, 2)] ^ |
| Tks2[byte(temp, 1)] ^ |
| Tks3[byte(temp, 0)]; |
| #endif |
| |
| } |
| |
| /* copy last */ |
| rrk -= 4; |
| rk += 4; |
| *rk++ = *rrk++; |
| *rk++ = *rrk++; |
| *rk++ = *rrk++; |
| *rk = *rrk; |
| #endif /* ENCRYPT_ONLY */ |
| |
| return CRYPT_OK; |
| } |
| |
| /** |
| Encrypts a block of text with AES |
| @param pt The input plaintext (16 bytes) |
| @param ct The output ciphertext (16 bytes) |
| @param skey The key as scheduled |
| @return CRYPT_OK if successful |
| */ |
| #ifdef LTC_CLEAN_STACK |
| static int _rijndael_ecb_encrypt(const unsigned char *pt, unsigned char *ct, symmetric_key *skey) |
| #else |
| int ECB_ENC(const unsigned char *pt, unsigned char *ct, symmetric_key *skey) |
| #endif |
| { |
| ulong32 s0, s1, s2, s3, t0, t1, t2, t3, *rk; |
| int Nr, r; |
| |
| LTC_ARGCHK(pt != NULL); |
| LTC_ARGCHK(ct != NULL); |
| LTC_ARGCHK(skey != NULL); |
| |
| Nr = skey->rijndael.Nr; |
| rk = skey->rijndael.eK; |
| |
| /* |
| * map byte array block to cipher state |
| * and add initial round key: |
| */ |
| LOAD32H(s0, pt ); s0 ^= rk[0]; |
| LOAD32H(s1, pt + 4); s1 ^= rk[1]; |
| LOAD32H(s2, pt + 8); s2 ^= rk[2]; |
| LOAD32H(s3, pt + 12); s3 ^= rk[3]; |
| |
| #ifdef LTC_SMALL_CODE |
| |
| for (r = 0; ; r++) { |
| rk += 4; |
| t0 = |
| Te0(byte(s0, 3)) ^ |
| Te1(byte(s1, 2)) ^ |
| Te2(byte(s2, 1)) ^ |
| Te3(byte(s3, 0)) ^ |
| rk[0]; |
| t1 = |
| Te0(byte(s1, 3)) ^ |
| Te1(byte(s2, 2)) ^ |
| Te2(byte(s3, 1)) ^ |
| Te3(byte(s0, 0)) ^ |
| rk[1]; |
| t2 = |
| Te0(byte(s2, 3)) ^ |
| Te1(byte(s3, 2)) ^ |
| Te2(byte(s0, 1)) ^ |
| Te3(byte(s1, 0)) ^ |
| rk[2]; |
| t3 = |
| Te0(byte(s3, 3)) ^ |
| Te1(byte(s0, 2)) ^ |
| Te2(byte(s1, 1)) ^ |
| Te3(byte(s2, 0)) ^ |
| rk[3]; |
| if (r == Nr-2) { |
| break; |
| } |
| s0 = t0; s1 = t1; s2 = t2; s3 = t3; |
| } |
| rk += 4; |
| |
| #else |
| |
| /* |
| * Nr - 1 full rounds: |
| */ |
| r = Nr >> 1; |
| for (;;) { |
| t0 = |
| Te0(byte(s0, 3)) ^ |
| Te1(byte(s1, 2)) ^ |
| Te2(byte(s2, 1)) ^ |
| Te3(byte(s3, 0)) ^ |
| rk[4]; |
| t1 = |
| Te0(byte(s1, 3)) ^ |
| Te1(byte(s2, 2)) ^ |
| Te2(byte(s3, 1)) ^ |
| Te3(byte(s0, 0)) ^ |
| rk[5]; |
| t2 = |
| Te0(byte(s2, 3)) ^ |
| Te1(byte(s3, 2)) ^ |
| Te2(byte(s0, 1)) ^ |
| Te3(byte(s1, 0)) ^ |
| rk[6]; |
| t3 = |
| Te0(byte(s3, 3)) ^ |
| Te1(byte(s0, 2)) ^ |
| Te2(byte(s1, 1)) ^ |
| Te3(byte(s2, 0)) ^ |
| rk[7]; |
| |
| rk += 8; |
| if (--r == 0) { |
| break; |
| } |
| |
| s0 = |
| Te0(byte(t0, 3)) ^ |
| Te1(byte(t1, 2)) ^ |
| Te2(byte(t2, 1)) ^ |
| Te3(byte(t3, 0)) ^ |
| rk[0]; |
| s1 = |
| Te0(byte(t1, 3)) ^ |
| Te1(byte(t2, 2)) ^ |
| Te2(byte(t3, 1)) ^ |
| Te3(byte(t0, 0)) ^ |
| rk[1]; |
| s2 = |
| Te0(byte(t2, 3)) ^ |
| Te1(byte(t3, 2)) ^ |
| Te2(byte(t0, 1)) ^ |
| Te3(byte(t1, 0)) ^ |
| rk[2]; |
| s3 = |
| Te0(byte(t3, 3)) ^ |
| Te1(byte(t0, 2)) ^ |
| Te2(byte(t1, 1)) ^ |
| Te3(byte(t2, 0)) ^ |
| rk[3]; |
| } |
| |
| #endif |
| |
| /* |
| * apply last round and |
| * map cipher state to byte array block: |
| */ |
| s0 = |
| (Te4_3[byte(t0, 3)]) ^ |
| (Te4_2[byte(t1, 2)]) ^ |
| (Te4_1[byte(t2, 1)]) ^ |
| (Te4_0[byte(t3, 0)]) ^ |
| rk[0]; |
| STORE32H(s0, ct); |
| s1 = |
| (Te4_3[byte(t1, 3)]) ^ |
| (Te4_2[byte(t2, 2)]) ^ |
| (Te4_1[byte(t3, 1)]) ^ |
| (Te4_0[byte(t0, 0)]) ^ |
| rk[1]; |
| STORE32H(s1, ct+4); |
| s2 = |
| (Te4_3[byte(t2, 3)]) ^ |
| (Te4_2[byte(t3, 2)]) ^ |
| (Te4_1[byte(t0, 1)]) ^ |
| (Te4_0[byte(t1, 0)]) ^ |
| rk[2]; |
| STORE32H(s2, ct+8); |
| s3 = |
| (Te4_3[byte(t3, 3)]) ^ |
| (Te4_2[byte(t0, 2)]) ^ |
| (Te4_1[byte(t1, 1)]) ^ |
| (Te4_0[byte(t2, 0)]) ^ |
| rk[3]; |
| STORE32H(s3, ct+12); |
| |
| return CRYPT_OK; |
| } |
| |
| #ifdef LTC_CLEAN_STACK |
| int ECB_ENC(const unsigned char *pt, unsigned char *ct, symmetric_key *skey) |
| { |
| int err = _rijndael_ecb_encrypt(pt, ct, skey); |
| burn_stack(sizeof(unsigned long)*8 + sizeof(unsigned long*) + sizeof(int)*2); |
| return err; |
| } |
| #endif |
| |
| #ifndef ENCRYPT_ONLY |
| |
| /** |
| Decrypts a block of text with AES |
| @param ct The input ciphertext (16 bytes) |
| @param pt The output plaintext (16 bytes) |
| @param skey The key as scheduled |
| @return CRYPT_OK if successful |
| */ |
| #ifdef LTC_CLEAN_STACK |
| static int _rijndael_ecb_decrypt(const unsigned char *ct, unsigned char *pt, symmetric_key *skey) |
| #else |
| int ECB_DEC(const unsigned char *ct, unsigned char *pt, symmetric_key *skey) |
| #endif |
| { |
| ulong32 s0, s1, s2, s3, t0, t1, t2, t3, *rk; |
| int Nr, r; |
| |
| LTC_ARGCHK(pt != NULL); |
| LTC_ARGCHK(ct != NULL); |
| LTC_ARGCHK(skey != NULL); |
| |
| Nr = skey->rijndael.Nr; |
| rk = skey->rijndael.dK; |
| |
| /* |
| * map byte array block to cipher state |
| * and add initial round key: |
| */ |
| LOAD32H(s0, ct ); s0 ^= rk[0]; |
| LOAD32H(s1, ct + 4); s1 ^= rk[1]; |
| LOAD32H(s2, ct + 8); s2 ^= rk[2]; |
| LOAD32H(s3, ct + 12); s3 ^= rk[3]; |
| |
| #ifdef LTC_SMALL_CODE |
| for (r = 0; ; r++) { |
| rk += 4; |
| t0 = |
| Td0(byte(s0, 3)) ^ |
| Td1(byte(s3, 2)) ^ |
| Td2(byte(s2, 1)) ^ |
| Td3(byte(s1, 0)) ^ |
| rk[0]; |
| t1 = |
| Td0(byte(s1, 3)) ^ |
| Td1(byte(s0, 2)) ^ |
| Td2(byte(s3, 1)) ^ |
| Td3(byte(s2, 0)) ^ |
| rk[1]; |
| t2 = |
| Td0(byte(s2, 3)) ^ |
| Td1(byte(s1, 2)) ^ |
| Td2(byte(s0, 1)) ^ |
| Td3(byte(s3, 0)) ^ |
| rk[2]; |
| t3 = |
| Td0(byte(s3, 3)) ^ |
| Td1(byte(s2, 2)) ^ |
| Td2(byte(s1, 1)) ^ |
| Td3(byte(s0, 0)) ^ |
| rk[3]; |
| if (r == Nr-2) { |
| break; |
| } |
| s0 = t0; s1 = t1; s2 = t2; s3 = t3; |
| } |
| rk += 4; |
| |
| #else |
| |
| /* |
| * Nr - 1 full rounds: |
| */ |
| r = Nr >> 1; |
| for (;;) { |
| |
| t0 = |
| Td0(byte(s0, 3)) ^ |
| Td1(byte(s3, 2)) ^ |
| Td2(byte(s2, 1)) ^ |
| Td3(byte(s1, 0)) ^ |
| rk[4]; |
| t1 = |
| Td0(byte(s1, 3)) ^ |
| Td1(byte(s0, 2)) ^ |
| Td2(byte(s3, 1)) ^ |
| Td3(byte(s2, 0)) ^ |
| rk[5]; |
| t2 = |
| Td0(byte(s2, 3)) ^ |
| Td1(byte(s1, 2)) ^ |
| Td2(byte(s0, 1)) ^ |
| Td3(byte(s3, 0)) ^ |
| rk[6]; |
| t3 = |
| Td0(byte(s3, 3)) ^ |
| Td1(byte(s2, 2)) ^ |
| Td2(byte(s1, 1)) ^ |
| Td3(byte(s0, 0)) ^ |
| rk[7]; |
| |
| rk += 8; |
| if (--r == 0) { |
| break; |
| } |
| |
| |
| s0 = |
| Td0(byte(t0, 3)) ^ |
| Td1(byte(t3, 2)) ^ |
| Td2(byte(t2, 1)) ^ |
| Td3(byte(t1, 0)) ^ |
| rk[0]; |
| s1 = |
| Td0(byte(t1, 3)) ^ |
| Td1(byte(t0, 2)) ^ |
| Td2(byte(t3, 1)) ^ |
| Td3(byte(t2, 0)) ^ |
| rk[1]; |
| s2 = |
| Td0(byte(t2, 3)) ^ |
| Td1(byte(t1, 2)) ^ |
| Td2(byte(t0, 1)) ^ |
| Td3(byte(t3, 0)) ^ |
| rk[2]; |
| s3 = |
| Td0(byte(t3, 3)) ^ |
| Td1(byte(t2, 2)) ^ |
| Td2(byte(t1, 1)) ^ |
| Td3(byte(t0, 0)) ^ |
| rk[3]; |
| } |
| #endif |
| |
| /* |
| * apply last round and |
| * map cipher state to byte array block: |
| */ |
| s0 = |
| (Td4[byte(t0, 3)] & 0xff000000) ^ |
| (Td4[byte(t3, 2)] & 0x00ff0000) ^ |
| (Td4[byte(t2, 1)] & 0x0000ff00) ^ |
| (Td4[byte(t1, 0)] & 0x000000ff) ^ |
| rk[0]; |
| STORE32H(s0, pt); |
| s1 = |
| (Td4[byte(t1, 3)] & 0xff000000) ^ |
| (Td4[byte(t0, 2)] & 0x00ff0000) ^ |
| (Td4[byte(t3, 1)] & 0x0000ff00) ^ |
| (Td4[byte(t2, 0)] & 0x000000ff) ^ |
| rk[1]; |
| STORE32H(s1, pt+4); |
| s2 = |
| (Td4[byte(t2, 3)] & 0xff000000) ^ |
| (Td4[byte(t1, 2)] & 0x00ff0000) ^ |
| (Td4[byte(t0, 1)] & 0x0000ff00) ^ |
| (Td4[byte(t3, 0)] & 0x000000ff) ^ |
| rk[2]; |
| STORE32H(s2, pt+8); |
| s3 = |
| (Td4[byte(t3, 3)] & 0xff000000) ^ |
| (Td4[byte(t2, 2)] & 0x00ff0000) ^ |
| (Td4[byte(t1, 1)] & 0x0000ff00) ^ |
| (Td4[byte(t0, 0)] & 0x000000ff) ^ |
| rk[3]; |
| STORE32H(s3, pt+12); |
| |
| return CRYPT_OK; |
| } |
| |
| |
| #ifdef LTC_CLEAN_STACK |
| int ECB_DEC(const unsigned char *ct, unsigned char *pt, symmetric_key *skey) |
| { |
| int err = _rijndael_ecb_decrypt(ct, pt, skey); |
| burn_stack(sizeof(unsigned long)*8 + sizeof(unsigned long*) + sizeof(int)*2); |
| return err; |
| } |
| #endif |
| |
| /** |
| Performs a self-test of the AES block cipher |
| @return CRYPT_OK if functional, CRYPT_NOP if self-test has been disabled |
| */ |
| int ECB_TEST(void) |
| { |
| #ifndef LTC_TEST |
| return CRYPT_NOP; |
| #else |
| int err; |
| static const struct { |
| int keylen; |
| unsigned char key[32], pt[16], ct[16]; |
| } tests[] = { |
| { 16, |
| { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
| 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f }, |
| { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, |
| 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff }, |
| { 0x69, 0xc4, 0xe0, 0xd8, 0x6a, 0x7b, 0x04, 0x30, |
| 0xd8, 0xcd, 0xb7, 0x80, 0x70, 0xb4, 0xc5, 0x5a } |
| }, { |
| 24, |
| { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
| 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 }, |
| { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, |
| 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff }, |
| { 0xdd, 0xa9, 0x7c, 0xa4, 0x86, 0x4c, 0xdf, 0xe0, |
| 0x6e, 0xaf, 0x70, 0xa0, 0xec, 0x0d, 0x71, 0x91 } |
| }, { |
| 32, |
| { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, |
| 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, |
| 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, |
| 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f }, |
| { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, |
| 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff }, |
| { 0x8e, 0xa2, 0xb7, 0xca, 0x51, 0x67, 0x45, 0xbf, |
| 0xea, 0xfc, 0x49, 0x90, 0x4b, 0x49, 0x60, 0x89 } |
| } |
| }; |
| |
| symmetric_key key; |
| unsigned char tmp[2][16]; |
| int i, y; |
| |
| for (i = 0; i < (int)(sizeof(tests)/sizeof(tests[0])); i++) { |
| zeromem(&key, sizeof(key)); |
| if ((err = rijndael_setup(tests[i].key, tests[i].keylen, 0, &key)) != CRYPT_OK) { |
| return err; |
| } |
| |
| rijndael_ecb_encrypt(tests[i].pt, tmp[0], &key); |
| rijndael_ecb_decrypt(tmp[0], tmp[1], &key); |
| if (XMEMCMP(tmp[0], tests[i].ct, 16) || XMEMCMP(tmp[1], tests[i].pt, 16)) { |
| #if 0 |
| printf("\n\nTest %d failed\n", i); |
| if (XMEMCMP(tmp[0], tests[i].ct, 16)) { |
| printf("CT: "); |
| for (i = 0; i < 16; i++) { |
| printf("%02x ", tmp[0][i]); |
| } |
| printf("\n"); |
| } else { |
| printf("PT: "); |
| for (i = 0; i < 16; i++) { |
| printf("%02x ", tmp[1][i]); |
| } |
| printf("\n"); |
| } |
| #endif |
| return CRYPT_FAIL_TESTVECTOR; |
| } |
| |
| /* now see if we can encrypt all zero bytes 1000 times, decrypt and come back where we started */ |
| for (y = 0; y < 16; y++) tmp[0][y] = 0; |
| for (y = 0; y < 1000; y++) rijndael_ecb_encrypt(tmp[0], tmp[0], &key); |
| for (y = 0; y < 1000; y++) rijndael_ecb_decrypt(tmp[0], tmp[0], &key); |
| for (y = 0; y < 16; y++) if (tmp[0][y] != 0) return CRYPT_FAIL_TESTVECTOR; |
| } |
| return CRYPT_OK; |
| #endif |
| } |
| |
| #endif /* ENCRYPT_ONLY */ |
| |
| |
| /** Terminate the context |
| @param skey The scheduled key |
| */ |
| void ECB_DONE(symmetric_key *skey) |
| { |
| } |
| |
| |
| /** |
| Gets suitable key size |
| @param keysize [in/out] The length of the recommended key (in bytes). This function will store the suitable size back in this variable. |
| @return CRYPT_OK if the input key size is acceptable. |
| */ |
| int ECB_KS(int *keysize) |
| { |
| LTC_ARGCHK(keysize != NULL); |
| |
| if (*keysize < 16) |
| return CRYPT_INVALID_KEYSIZE; |
| if (*keysize < 24) { |
| *keysize = 16; |
| return CRYPT_OK; |
| } else if (*keysize < 32) { |
| *keysize = 24; |
| return CRYPT_OK; |
| } else { |
| *keysize = 32; |
| return CRYPT_OK; |
| } |
| } |
| |
| #endif |
| |
| |
| /* $Source: /cvs/libtom/libtomcrypt/src/ciphers/aes/aes.c,v $ */ |
| /* $Revision: 1.14 $ */ |
| /* $Date: 2006/11/08 23:01:06 $ */ |
