X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fdes%2Fncbc_enc.c;h=b8db07b199d6017933e8506ec4a56b7fd38c1a21;hp=1d1a368c2231192a44bd16a2a5ec21a84d75f1ec;hb=080b8cadfa9a9c7655fb0dbd5e432b09d708ab3b;hpb=58964a492275ca9a59a0cd9c8155cb2491b4b909

diff --git a/crypto/des/ncbc_enc.c b/crypto/des/ncbc_enc.c
index 1d1a368c22..b8db07b199 100644
--- a/crypto/des/ncbc_enc.c
+++ b/crypto/des/ncbc_enc.c
@@ -1,4 +1,9 @@
 /* crypto/des/ncbc_enc.c */
+/*
+ * #included by:
+ *    cbc_enc.c  (des_cbc_encrypt)
+ *    des_enc.c  (des_ncbc_encrypt)
+ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -58,24 +63,21 @@
 
 #include "des_locl.h"
 
-void des_ncbc_encrypt(input, output, length, schedule, ivec, enc)
-des_cblock (*input);
-des_cblock (*output);
-long length;
-des_key_schedule schedule;
-des_cblock (*ivec);
-int enc;
+#ifdef CBC_ENC_C__DONT_UPDATE_IV
+void des_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,
+	     des_key_schedule schedule, des_cblock *ivec, int enc)
+#else
+void des_ncbc_encrypt(const unsigned char *in, unsigned char *out, long length,
+	     des_key_schedule schedule, des_cblock *ivec, int enc)
+#endif
 	{
 	register DES_LONG tin0,tin1;
 	register DES_LONG tout0,tout1,xor0,xor1;
-	register unsigned char *in,*out;
 	register long l=length;
 	DES_LONG tin[2];
 	unsigned char *iv;
 
-	in=(unsigned char *)input;
-	out=(unsigned char *)output;
-	iv=(unsigned char *)ivec;
+	iv = &(*ivec)[0];
 
 	if (enc)
 		{
@@ -87,7 +89,7 @@ int enc;
 			c2l(in,tin1);
 			tin0^=tout0; tin[0]=tin0;
 			tin1^=tout1; tin[1]=tin1;
-			des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+			des_encrypt1((DES_LONG *)tin,schedule,DES_ENCRYPT);
 			tout0=tin[0]; l2c(tout0,out);
 			tout1=tin[1]; l2c(tout1,out);
 			}
@@ -96,13 +98,15 @@ int enc;
 			c2ln(in,tin0,tin1,l+8);
 			tin0^=tout0; tin[0]=tin0;
 			tin1^=tout1; tin[1]=tin1;
-			des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+			des_encrypt1((DES_LONG *)tin,schedule,DES_ENCRYPT);
 			tout0=tin[0]; l2c(tout0,out);
 			tout1=tin[1]; l2c(tout1,out);
 			}
-		iv=(unsigned char *)ivec;
+#ifndef CBC_ENC_C__DONT_UPDATE_IV
+		iv = &(*ivec)[0];
 		l2c(tout0,iv);
 		l2c(tout1,iv);
+#endif
 		}
 	else
 		{
@@ -112,7 +116,7 @@ int enc;
 			{
 			c2l(in,tin0); tin[0]=tin0;
 			c2l(in,tin1); tin[1]=tin1;
-			des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
+			des_encrypt1((DES_LONG *)tin,schedule,DES_DECRYPT);
 			tout0=tin[0]^xor0;
 			tout1=tin[1]^xor1;
 			l2c(tout0,out);
@@ -120,11 +124,25 @@ int enc;
 			xor0=tin0;
 			xor1=tin1;
 			}
-		iv=(unsigned char *)ivec;
+		if (l != -8)
+			{
+			c2l(in,tin0); tin[0]=tin0;
+			c2l(in,tin1); tin[1]=tin1;
+			des_encrypt1((DES_LONG *)tin,schedule,DES_DECRYPT);
+			tout0=tin[0]^xor0;
+			tout1=tin[1]^xor1;
+			l2cn(tout0,tout1,out,l+8);
+#ifndef CBC_ENC_C__DONT_UPDATE_IV
+			xor0=tin0;
+			xor1=tin1;
+#endif
+			}
+#ifndef CBC_ENC_C__DONT_UPDATE_IV 
+		iv = &(*ivec)[0];
 		l2c(xor0,iv);
 		l2c(xor1,iv);
+#endif
 		}
 	tin0=tin1=tout0=tout1=xor0=xor1=0;
 	tin[0]=tin[1]=0;
 	}
-