1 files changed, 27 insertions, 14 deletions

diff --git a/src/lib/libcrypto/des/ncbc_enc.c b/src/lib/libcrypto/des/ncbc_enc.c
index 1d1a368c22..e0e67a417d 100644
--- a/src/lib/libcrypto/des/ncbc_enc.c
+++ b/src/lib/libcrypto/des/ncbc_enc.c
@@ -58,24 +58,21 @@
 
 #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)
                 {
@@ -100,9 +97,11 @@ int enc;
                         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
                 {
@@ -120,11 +119,25 @@ 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_encrypt((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;
         }
-