From d4fcd82bb7f6d603bd61e19a81ba97337b89dfca Mon Sep 17 00:00:00 2001
From: markus <>
Date: Mon, 12 May 2003 02:18:40 +0000
Subject: merge 0.9.7b with local changes; crank majors for libssl/libcrypto

---
 src/lib/libcrypto/aes/aes_cbc.c | 58 ++++++++++++++++++++++++++++-------------
 1 file changed, 40 insertions(+), 18 deletions(-)

(limited to 'src/lib/libcrypto/aes/aes_cbc.c')

diff --git a/src/lib/libcrypto/aes/aes_cbc.c b/src/lib/libcrypto/aes/aes_cbc.c
index 3dfd7aba2a..de438306b1 100644
--- a/src/lib/libcrypto/aes/aes_cbc.c
+++ b/src/lib/libcrypto/aes/aes_cbc.c
@@ -49,7 +49,13 @@
  *
  */
 
+#ifndef AES_DEBUG
+# ifndef NDEBUG
+#  define NDEBUG
+# endif
+#endif
 #include <assert.h>
+
 #include <openssl/aes.h>
 #include "aes_locl.h"
 
@@ -57,33 +63,49 @@ void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
 		     const unsigned long length, const AES_KEY *key,
 		     unsigned char *ivec, const int enc) {
 
-	int n;
+	unsigned long n;
 	unsigned long len = length;
-	unsigned char tmp[16];
+	unsigned char tmp[AES_BLOCK_SIZE];
 
 	assert(in && out && key && ivec);
-	assert(length % AES_BLOCK_SIZE == 0);
 	assert((AES_ENCRYPT == enc)||(AES_DECRYPT == enc));
 
-	if (AES_ENCRYPT == enc)
-		while (len > 0) {
-			for(n=0; n < 16; ++n)
+	if (AES_ENCRYPT == enc) {
+		while (len >= AES_BLOCK_SIZE) {
+			for(n=0; n < sizeof tmp; ++n)
 				tmp[n] = in[n] ^ ivec[n];
 			AES_encrypt(tmp, out, key);
-			memcpy(ivec, out, 16);
-			len -= 16;
-			in += 16;
-			out += 16;
+			memcpy(ivec, out, AES_BLOCK_SIZE);
+			len -= AES_BLOCK_SIZE;
+			in += AES_BLOCK_SIZE;
+			out += AES_BLOCK_SIZE;
 		}
-	else
-		while (len > 0) {
-			memcpy(tmp, in, 16);
+		if (len) {
+			for(n=0; n < len; ++n)
+				tmp[n] = in[n] ^ ivec[n];
+			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);
+		}			
+	} else {
+		while (len >= AES_BLOCK_SIZE) {
+			memcpy(tmp, in, sizeof tmp);
 			AES_decrypt(in, out, key);
-			for(n=0; n < 16; ++n)
+			for(n=0; n < AES_BLOCK_SIZE; ++n)
 				out[n] ^= ivec[n];
-			memcpy(ivec, tmp, 16);
-			len -= 16;
-			in += 16;
-			out += 16;
+			memcpy(ivec, tmp, AES_BLOCK_SIZE);
+			len -= AES_BLOCK_SIZE;
+			in += AES_BLOCK_SIZE;
+			out += AES_BLOCK_SIZE;
 		}
+		if (len) {
+			memcpy(tmp, in, sizeof tmp);
+			AES_decrypt(tmp, tmp, key);
+			for(n=0; n < len; ++n)
+				out[n] ^= ivec[n];
+			memcpy(ivec, tmp, sizeof tmp);
+		}			
+	}
 }
-- 
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