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author | grehan <grehan@FreeBSD.org> | 2013-07-05 05:47:10 +0000 |
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committer | grehan <grehan@FreeBSD.org> | 2013-07-05 05:47:10 +0000 |
commit | 6a7baaf83640e0eaa135d2f7a3c1d4401f1683bf (patch) | |
tree | 83ae82cf8f72af4b819f49aa52acdd97f74c6328 /contrib/wpa/src/crypto/aes-internal-enc.c | |
parent | 2cb5a953f0a60811764ccaca7c37b51ff007c711 (diff) | |
parent | 8e6b84b998690dcfc1a4957dc7a483ac5b600db8 (diff) | |
download | FreeBSD-src-6a7baaf83640e0eaa135d2f7a3c1d4401f1683bf.zip FreeBSD-src-6a7baaf83640e0eaa135d2f7a3c1d4401f1683bf.tar.gz |
IFC @ r252763
Diffstat (limited to 'contrib/wpa/src/crypto/aes-internal-enc.c')
-rw-r--r-- | contrib/wpa/src/crypto/aes-internal-enc.c | 37 |
1 files changed, 21 insertions, 16 deletions
diff --git a/contrib/wpa/src/crypto/aes-internal-enc.c b/contrib/wpa/src/crypto/aes-internal-enc.c index 2f19826..f3c61b8 100644 --- a/contrib/wpa/src/crypto/aes-internal-enc.c +++ b/contrib/wpa/src/crypto/aes-internal-enc.c @@ -2,23 +2,16 @@ * AES (Rijndael) cipher - encrypt * * Modifications to public domain implementation: - * - support only 128-bit keys * - cleanup * - use C pre-processor to make it easier to change S table access * - added option (AES_SMALL_TABLES) for reducing code size by about 8 kB at * cost of reduced throughput (quite small difference on Pentium 4, * 10-25% when using -O1 or -O2 optimization) * - * Copyright (c) 2003-2005, Jouni Malinen <j@w1.fi> + * Copyright (c) 2003-2012, Jouni Malinen <j@w1.fi> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Alternatively, this software may be distributed under the terms of BSD - * license. - * - * See README and COPYING for more details. + * This software may be distributed under the terms of the BSD license. + * See README for more details. */ #include "includes.h" @@ -27,10 +20,9 @@ #include "crypto.h" #include "aes_i.h" -void rijndaelEncrypt(const u32 rk[/*44*/], const u8 pt[16], u8 ct[16]) +static void rijndaelEncrypt(const u32 rk[], int Nr, const u8 pt[16], u8 ct[16]) { u32 s0, s1, s2, s3, t0, t1, t2, t3; - const int Nr = 10; #ifndef FULL_UNROLL int r; #endif /* ?FULL_UNROLL */ @@ -61,6 +53,14 @@ d##3 = TE0(s##3) ^ TE1(s##0) ^ TE2(s##1) ^ TE3(s##2) ^ rk[4 * i + 3] ROUND(7,t,s); ROUND(8,s,t); ROUND(9,t,s); + if (Nr > 10) { + ROUND(10,s,t); + ROUND(11,t,s); + if (Nr > 12) { + ROUND(12,s,t); + ROUND(13,t,s); + } + } rk += Nr << 2; @@ -98,19 +98,24 @@ d##3 = TE0(s##3) ^ TE1(s##0) ^ TE2(s##1) ^ TE3(s##2) ^ rk[4 * i + 3] void * aes_encrypt_init(const u8 *key, size_t len) { u32 *rk; - if (len != 16) - return NULL; + int res; rk = os_malloc(AES_PRIV_SIZE); if (rk == NULL) return NULL; - rijndaelKeySetupEnc(rk, key); + res = rijndaelKeySetupEnc(rk, key, len * 8); + if (res < 0) { + os_free(rk); + return NULL; + } + rk[AES_PRIV_NR_POS] = res; return rk; } void aes_encrypt(void *ctx, const u8 *plain, u8 *crypt) { - rijndaelEncrypt(ctx, plain, crypt); + u32 *rk = ctx; + rijndaelEncrypt(ctx, rk[AES_PRIV_NR_POS], plain, crypt); } |