From: Richard Levitte <levitte@openssl.org>
Date: Tue, 10 Jun 2003 04:11:46 +0000 (+0000)
Subject: The output from AES_cbc_encrypt() should be exact multiple blocks when encrypting
X-Git-Tag: OpenSSL_0_9_7c~86
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=4eebab0d2226c1fad5dd7c4ce5f760cab2aa3a24;p=oweals%2Fopenssl.git

The output from AES_cbc_encrypt() should be exact multiple blocks when encrypting
---

diff --git a/crypto/aes/aes_cbc.c b/crypto/aes/aes_cbc.c
index de438306b1..86b27b10d6 100644
--- a/crypto/aes/aes_cbc.c
+++ b/crypto/aes/aes_cbc.c
@@ -72,7 +72,7 @@ void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
 
 	if (AES_ENCRYPT == enc) {
 		while (len >= AES_BLOCK_SIZE) {
-			for(n=0; n < sizeof tmp; ++n)
+			for(n=0; n < AES_BLOCK_SIZE; ++n)
 				tmp[n] = in[n] ^ ivec[n];
 			AES_encrypt(tmp, out, key);
 			memcpy(ivec, out, AES_BLOCK_SIZE);
@@ -86,12 +86,12 @@ void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
 			for(n=len; n < AES_BLOCK_SIZE; ++n)
 				tmp[n] = ivec[n];
 			AES_encrypt(tmp, tmp, key);
-			memcpy(out, tmp, len);
-			memcpy(ivec, tmp, sizeof tmp);
+			memcpy(out, tmp, AES_BLOCK_SIZE);
+			memcpy(ivec, tmp, AES_BLOCK_SIZE);
 		}			
 	} else {
 		while (len >= AES_BLOCK_SIZE) {
-			memcpy(tmp, in, sizeof tmp);
+			memcpy(tmp, in, AES_BLOCK_SIZE);
 			AES_decrypt(in, out, key);
 			for(n=0; n < AES_BLOCK_SIZE; ++n)
 				out[n] ^= ivec[n];
@@ -101,11 +101,11 @@ void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
 			out += AES_BLOCK_SIZE;
 		}
 		if (len) {
-			memcpy(tmp, in, sizeof tmp);
+			memcpy(tmp, in, AES_BLOCK_SIZE);
 			AES_decrypt(tmp, tmp, key);
 			for(n=0; n < len; ++n)
 				out[n] ^= ivec[n];
-			memcpy(ivec, tmp, sizeof tmp);
+			memcpy(ivec, tmp, AES_BLOCK_SIZE);
 		}			
 	}
 }