Mercurial > dropbear
view libtomcrypt/src/ciphers/aes/aes.c @ 1306:34e6127ef02e
merge fixes from PuTTY import.c
toint() from misc.c
(revids are from hggit conversion)
changeset: 4620:60a336a6c85c
user: Simon Tatham <[email protected]>
date: Thu Feb 25 20:26:33 2016 +0000
files: import.c
description:
Fix potential segfaults in reading OpenSSH's ASN.1 key format.
The length coming back from ber_read_id_len might have overflowed, so
treat it as potentially negative. Also, while I'm here, accumulate it
inside ber_read_id_len as an unsigned, so as to avoid undefined
behaviour on integer overflow, and toint() it before return.
Thanks to Hanno Böck for spotting this, with the aid of AFL.
(cherry picked from commit 5b7833cd474a24ec098654dcba8cb9509f3bf2c1)
Conflicts:
import.c
(cherry-picker's note: resolving the conflict involved removing an
entire section of the original commit which fixed ECDSA code not
present on this branch)
changeset: 4619:9c6c638d98d8
user: Simon Tatham <[email protected]>
date: Sun Jul 14 10:45:54 2013 +0000
files: import.c ssh.c sshdss.c sshpubk.c sshrsa.c
description:
Tighten up a lot of casts from unsigned to int which are read by one
of the GET_32BIT macros and then used as length fields. Missing bounds
checks against zero have been added, and also I've introduced a helper
function toint() which casts from unsigned to int in such a way as to
avoid C undefined behaviour, since I'm not sure I trust compilers any
more to do the obviously sensible thing.
[originally from svn r9918]
changeset: 4618:3957829f24d3
user: Simon Tatham <[email protected]>
date: Mon Jul 08 22:36:04 2013 +0000
files: import.c sshdss.c sshrsa.c
description:
Add an assortment of extra safety checks.
[originally from svn r9896]
changeset: 4617:2cddee0bce12
user: Jacob Nevins <[email protected]>
date: Wed Dec 07 00:24:45 2005 +0000
files: import.c
description:
Institutional failure to memset() things pointed at rather than pointers.
Things should now be zeroed and memory not leaked. Spotted by Brant Thomsen.
[originally from svn r6476]
changeset: 4616:24ac78a9c71d
user: Simon Tatham <[email protected]>
date: Wed Feb 11 13:58:27 2004 +0000
files: import.c
description:
Jacob's last-minute testing found a couple of trivial bugs in
import.c, and my attempts to reproduce them in cmdgen found another
one there :-)
[originally from svn r3847]
changeset: 4615:088d39a73db0
user: Simon Tatham <[email protected]>
date: Thu Jan 22 18:52:49 2004 +0000
files: import.c
description:
Placate some gcc warnings.
[originally from svn r3761]
changeset: 4614:e4288bad4d93
parent: 1758:108b8924593d
user: Simon Tatham <[email protected]>
date: Fri Oct 03 21:21:23 2003 +0000
files: import.c
description:
My ASN.1 decoder returned wrong IDs for anything above 0x1E! Good
job it's never had to yet. Ahem.
[originally from svn r3479]
| author | Matt Johnston <matt@ucc.asn.au> |
|---|---|
| date | Tue, 12 Jul 2016 23:00:01 +0800 |
| parents | 0e1465709336 |
| children | f849a5ca2efc |
line wrap: on
line source
/* 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, [email protected], 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 <[email protected]> * @author Antoon Bosselaers <[email protected]> * @author Paulo Barreto <[email protected]> --- */ /** @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 #if 0 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 }; #endif 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; ulong32 temp, *rk; #ifndef ENCRYPT_ONLY int j; 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) { #ifndef ENCRYPT_ONLY j = 44; #endif 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) { #ifndef ENCRYPT_ONLY j = 52; #endif 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) { #ifndef ENCRYPT_ONLY j = 60; #endif 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) { (void)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 $ */