For a long time, I've wanted to be able to easily run one or a few

[oweals/openssl.git] / crypto / des / ede_cbcm_enc.c

diff --git a/crypto/des/ede_cbcm_enc.c b/crypto/des/ede_cbcm_enc.c
index a40b1d60732957af96b66d80d929b70a3fcb341e..c53062481ddd5441080f7d5589209b89024b872f 100644 (file)
--- a/crypto/des/ede_cbcm_enc.c
+++ b/crypto/des/ede_cbcm_enc.c
@@ -61,28 +61,29 @@
 This is an implementation of Triple DES Cipher Block Chaining with Output
 Feedback Masking, by Coppersmith, Johnson and Matyas, (IBM and Certicom).
 
+Note that there is a known attack on this by Biham and Knudsen but it takes
+a lot of work:
+
+http://www.cs.technion.ac.il/users/wwwb/cgi-bin/tr-get.cgi/1998/CS/CS0928.ps.gz
+
 */
 
+#ifndef NO_DESCBCM
 #include "des_locl.h"
 
-void des_ede3_cbcm_encrypt(const unsigned char *input,unsigned char *output,
-                          long length,
-                          des_key_schedule ks1,des_key_schedule ks2,
-                          des_key_schedule ks3,
-                          des_cblock ivec1,des_cblock ivec2,
-                          int enc)
+void des_ede3_cbcm_encrypt(const unsigned char *in, unsigned char *out,
+            long length, des_key_schedule ks1, des_key_schedule ks2,
+            des_key_schedule ks3, des_cblock *ivec1, des_cblock *ivec2,
+            int enc)
     {
     register DES_LONG tin0,tin1;
     register DES_LONG tout0,tout1,xor0,xor1,m0,m1;
-    register unsigned char *in,*out;
     register long l=length;
     DES_LONG tin[2];
     unsigned char *iv1,*iv2;
 
-    in=(unsigned char *)input;
-    out=(unsigned char *)output;
-    iv1=(unsigned char *)ivec1;
-    iv2=(unsigned char *)ivec2;
+    iv1 = &(*ivec1)[0];
+    iv2 = &(*ivec2)[0];
 
     if (enc)
        {
@@ -125,11 +126,11 @@ void des_ede3_cbcm_encrypt(const unsigned char *input,unsigned char *output,
            l2c(tout0,out);
            l2c(tout1,out);
            }
-       iv1=(unsigned char *)ivec1;
+       iv1=&(*ivec1)[0];
        l2c(m0,iv1);
        l2c(m1,iv1);
 
-       iv2=(unsigned char *)ivec2;
+       iv2=&(*ivec2)[0];
        l2c(tout0,iv2);
        l2c(tout1,iv2);
        }
@@ -182,14 +183,15 @@ void des_ede3_cbcm_encrypt(const unsigned char *input,unsigned char *output,
            xor1=t1;
            }
 
-       iv1=(unsigned char *)ivec1;
+       iv1=&(*ivec1)[0];
        l2c(m0,iv1);
        l2c(m1,iv1);
 
-       iv2=(unsigned char *)ivec2;
+       iv2=&(*ivec2)[0];
        l2c(xor0,iv2);
        l2c(xor1,iv2);
        }
     tin0=tin1=tout0=tout1=xor0=xor1=0;
     tin[0]=tin[1]=0;
     }
+#endif