From: Richard Levitte <levitte@openssl.org>
Date: Thu, 30 May 2002 14:06:17 +0000 (+0000)
Subject: Correct AES counter mode, which incorrectly incremented the counter before
X-Git-Tag: OpenSSL_0_9_7-beta1~18
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=6c98ed520dfbf3e20f2d5be9525da285b810881b;p=oweals%2Fopenssl.git

Correct AES counter mode, which incorrectly incremented the counter before
using it.
PR: 56
---

diff --git a/crypto/aes/aes_ctr.c b/crypto/aes/aes_ctr.c
index 8e800481de..aea3db2092 100644
--- a/crypto/aes/aes_ctr.c
+++ b/crypto/aes/aes_ctr.c
@@ -106,8 +106,8 @@ void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out,
 
 	while (l--) {
 		if (n == 0) {
-			AES_ctr128_inc(counter);
 			AES_encrypt(counter, tmp, key);
+			AES_ctr128_inc(counter);
 		}
 		*(out++) = *(in++) ^ tmp[n];
 		n = (n+1) % AES_BLOCK_SIZE;