X-Git-Url: http://www.project-moonshot.org/gitweb/?a=blobdiff_plain;f=libeap%2Fsrc%2Fcrypto%2Faes-internal-enc.c;fp=libeap%2Fsrc%2Fcrypto%2Faes-internal-enc.c;h=0000000000000000000000000000000000000000;hb=852a32fe63bc7d0271cca4df1bdb7634fd494b53;hp=f3c61b8508f3ce39a330bc3be5f7e71ca1d7ec15;hpb=88e34eecb5769da6526361b35df00fdbe823eac5;p=mech_eap.git diff --git a/libeap/src/crypto/aes-internal-enc.c b/libeap/src/crypto/aes-internal-enc.c deleted file mode 100644 index f3c61b8..0000000 --- a/libeap/src/crypto/aes-internal-enc.c +++ /dev/null @@ -1,126 +0,0 @@ -/* - * AES (Rijndael) cipher - encrypt - * - * Modifications to public domain implementation: - * - 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) 2003-2012, Jouni Malinen - * - * This software may be distributed under the terms of the BSD license. - * See README for more details. - */ - -#include "includes.h" - -#include "common.h" -#include "crypto.h" -#include "aes_i.h" - -static void rijndaelEncrypt(const u32 rk[], int Nr, const u8 pt[16], u8 ct[16]) -{ - u32 s0, s1, s2, s3, t0, t1, t2, t3; -#ifndef FULL_UNROLL - int r; -#endif /* ?FULL_UNROLL */ - - /* - * map byte array block to cipher state - * and add initial round key: - */ - s0 = GETU32(pt ) ^ rk[0]; - s1 = GETU32(pt + 4) ^ rk[1]; - s2 = GETU32(pt + 8) ^ rk[2]; - s3 = GETU32(pt + 12) ^ rk[3]; - -#define ROUND(i,d,s) \ -d##0 = TE0(s##0) ^ TE1(s##1) ^ TE2(s##2) ^ TE3(s##3) ^ rk[4 * i]; \ -d##1 = TE0(s##1) ^ TE1(s##2) ^ TE2(s##3) ^ TE3(s##0) ^ rk[4 * i + 1]; \ -d##2 = TE0(s##2) ^ TE1(s##3) ^ TE2(s##0) ^ TE3(s##1) ^ rk[4 * i + 2]; \ -d##3 = TE0(s##3) ^ TE1(s##0) ^ TE2(s##1) ^ TE3(s##2) ^ rk[4 * i + 3] - -#ifdef FULL_UNROLL - - ROUND(1,t,s); - ROUND(2,s,t); - ROUND(3,t,s); - ROUND(4,s,t); - ROUND(5,t,s); - ROUND(6,s,t); - 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; - -#else /* !FULL_UNROLL */ - - /* Nr - 1 full rounds: */ - r = Nr >> 1; - for (;;) { - ROUND(1,t,s); - rk += 8; - if (--r == 0) - break; - ROUND(0,s,t); - } - -#endif /* ?FULL_UNROLL */ - -#undef ROUND - - /* - * apply last round and - * map cipher state to byte array block: - */ - s0 = TE41(t0) ^ TE42(t1) ^ TE43(t2) ^ TE44(t3) ^ rk[0]; - PUTU32(ct , s0); - s1 = TE41(t1) ^ TE42(t2) ^ TE43(t3) ^ TE44(t0) ^ rk[1]; - PUTU32(ct + 4, s1); - s2 = TE41(t2) ^ TE42(t3) ^ TE43(t0) ^ TE44(t1) ^ rk[2]; - PUTU32(ct + 8, s2); - s3 = TE41(t3) ^ TE42(t0) ^ TE43(t1) ^ TE44(t2) ^ rk[3]; - PUTU32(ct + 12, s3); -} - - -void * aes_encrypt_init(const u8 *key, size_t len) -{ - u32 *rk; - int res; - rk = os_malloc(AES_PRIV_SIZE); - if (rk == NULL) - return NULL; - 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) -{ - u32 *rk = ctx; - rijndaelEncrypt(ctx, rk[AES_PRIV_NR_POS], plain, crypt); -} - - -void aes_encrypt_deinit(void *ctx) -{ - os_memset(ctx, 0, AES_PRIV_SIZE); - os_free(ctx); -}