X-Git-Url: http://www.project-moonshot.org/gitweb/?p=mech_eap.git;a=blobdiff_plain;f=libeap%2Fsrc%2Fcrypto%2Faes-internal-enc.c;fp=libeap%2Fsrc%2Fcrypto%2Faes-internal-enc.c;h=f3c61b8508f3ce39a330bc3be5f7e71ca1d7ec15;hp=2f198263bb84a2d7149f6c8d940a21d86dca439b;hb=f3746d009c6d7f50025af1f58a85e5fee9680be6;hpb=244f18d04aaf29e68495b5ffeb40ef5cca50942f

diff --git a/libeap/src/crypto/aes-internal-enc.c b/libeap/src/crypto/aes-internal-enc.c
index 2f19826..f3c61b8 100644
--- a/libeap/src/crypto/aes-internal-enc.c
+++ b/libeap/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);
 }