X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Faes%2Faes_cbc.c;h=dff5cd8df968440d2afbe37235912956207cff99;hp=373864cd4bdb9cdf387d5d620e22361aed76b61e;hb=40720ce;hpb=9d03aabea3ead1fe6a194297ddffd4a87f89b93c

diff --git a/crypto/aes/aes_cbc.c b/crypto/aes/aes_cbc.c
index 373864cd4b..dff5cd8df9 100644
--- a/crypto/aes/aes_cbc.c
+++ b/crypto/aes/aes_cbc.c
@@ -7,7 +7,7 @@
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
+ *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
@@ -61,73 +61,74 @@
 
 #if !defined(OPENSSL_FIPS_AES_ASM)
 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) {
+                     const unsigned long length, const AES_KEY *key,
+                     unsigned char *ivec, const int enc)
+{
 
-	unsigned long n;
-	unsigned long len = length;
-	unsigned char tmp[AES_BLOCK_SIZE];
-	const unsigned char *iv = ivec;
+    unsigned long n;
+    unsigned long len = length;
+    unsigned char tmp[AES_BLOCK_SIZE];
+    const unsigned char *iv = ivec;
 
-	assert(in && out && key && ivec);
-	assert((AES_ENCRYPT == enc)||(AES_DECRYPT == enc));
+    assert(in && out && key && ivec);
+    assert((AES_ENCRYPT == enc) || (AES_DECRYPT == enc));
 
-	if (AES_ENCRYPT == enc) {
-		while (len >= AES_BLOCK_SIZE) {
-			for(n=0; n < AES_BLOCK_SIZE; ++n)
-				out[n] = in[n] ^ iv[n];
-			AES_encrypt(out, out, key);
-			iv = out;
-			len -= AES_BLOCK_SIZE;
-			in += AES_BLOCK_SIZE;
-			out += AES_BLOCK_SIZE;
-		}
-		if (len) {
-			for(n=0; n < len; ++n)
-				out[n] = in[n] ^ iv[n];
-			for(n=len; n < AES_BLOCK_SIZE; ++n)
-				out[n] = iv[n];
-			AES_encrypt(out, out, key);
-			iv = out;
-		}
-		memcpy(ivec,iv,AES_BLOCK_SIZE);
-	} else if (in != out) {
-		while (len >= AES_BLOCK_SIZE) {
-			AES_decrypt(in, out, key);
-			for(n=0; n < AES_BLOCK_SIZE; ++n)
-				out[n] ^= iv[n];
-			iv = in;
-			len -= AES_BLOCK_SIZE;
-			in  += AES_BLOCK_SIZE;
-			out += AES_BLOCK_SIZE;
-		}
-		if (len) {
-			AES_decrypt(in,tmp,key);
-			for(n=0; n < len; ++n)
-				out[n] = tmp[n] ^ iv[n];
-			iv = in;
-		}
-		memcpy(ivec,iv,AES_BLOCK_SIZE);
-	} else {
-		while (len >= AES_BLOCK_SIZE) {
-			memcpy(tmp, in, AES_BLOCK_SIZE);
-			AES_decrypt(in, out, key);
-			for(n=0; n < AES_BLOCK_SIZE; ++n)
-				out[n] ^= ivec[n];
-			memcpy(ivec, tmp, AES_BLOCK_SIZE);
-			len -= AES_BLOCK_SIZE;
-			in += AES_BLOCK_SIZE;
-			out += AES_BLOCK_SIZE;
-		}
-		if (len) {
-			memcpy(tmp, in, AES_BLOCK_SIZE);
-			AES_decrypt(tmp, out, key);
-			for(n=0; n < len; ++n)
-				out[n] ^= ivec[n];
-			for(n=len; n < AES_BLOCK_SIZE; ++n)
-				out[n] = tmp[n];
-			memcpy(ivec, tmp, AES_BLOCK_SIZE);
-		}
-	}
+    if (AES_ENCRYPT == enc) {
+        while (len >= AES_BLOCK_SIZE) {
+            for (n = 0; n < AES_BLOCK_SIZE; ++n)
+                out[n] = in[n] ^ iv[n];
+            AES_encrypt(out, out, key);
+            iv = out;
+            len -= AES_BLOCK_SIZE;
+            in += AES_BLOCK_SIZE;
+            out += AES_BLOCK_SIZE;
+        }
+        if (len) {
+            for (n = 0; n < len; ++n)
+                out[n] = in[n] ^ iv[n];
+            for (n = len; n < AES_BLOCK_SIZE; ++n)
+                out[n] = iv[n];
+            AES_encrypt(out, out, key);
+            iv = out;
+        }
+        memcpy(ivec, iv, AES_BLOCK_SIZE);
+    } else if (in != out) {
+        while (len >= AES_BLOCK_SIZE) {
+            AES_decrypt(in, out, key);
+            for (n = 0; n < AES_BLOCK_SIZE; ++n)
+                out[n] ^= iv[n];
+            iv = in;
+            len -= AES_BLOCK_SIZE;
+            in += AES_BLOCK_SIZE;
+            out += AES_BLOCK_SIZE;
+        }
+        if (len) {
+            AES_decrypt(in, tmp, key);
+            for (n = 0; n < len; ++n)
+                out[n] = tmp[n] ^ iv[n];
+            iv = in;
+        }
+        memcpy(ivec, iv, AES_BLOCK_SIZE);
+    } else {
+        while (len >= AES_BLOCK_SIZE) {
+            memcpy(tmp, in, AES_BLOCK_SIZE);
+            AES_decrypt(in, out, key);
+            for (n = 0; n < AES_BLOCK_SIZE; ++n)
+                out[n] ^= ivec[n];
+            memcpy(ivec, tmp, AES_BLOCK_SIZE);
+            len -= AES_BLOCK_SIZE;
+            in += AES_BLOCK_SIZE;
+            out += AES_BLOCK_SIZE;
+        }
+        if (len) {
+            memcpy(tmp, in, AES_BLOCK_SIZE);
+            AES_decrypt(tmp, out, key);
+            for (n = 0; n < len; ++n)
+                out[n] ^= ivec[n];
+            for (n = len; n < AES_BLOCK_SIZE; ++n)
+                out[n] = tmp[n];
+            memcpy(ivec, tmp, AES_BLOCK_SIZE);
+        }
+    }
 }
 #endif