Algorithm parameter support.

[openssl.git] / crypto / evp / e_xcbc_d.c

diff --git a/crypto/evp/e_xcbc_d.c b/crypto/evp/e_xcbc_d.c
index 8832da24333cbf7cd8121dccb505bc36b11a2164..250e88c8c5d7520b8698a33b5fd84f8c758078a2 100644 (file)
--- a/crypto/evp/e_xcbc_d.c
+++ b/crypto/evp/e_xcbc_d.c
@@ -63,12 +63,13 @@
 
 #include <openssl/evp.h>
 #include <openssl/objects.h>
+#include "evp_locl.h"
 #include <openssl/des.h>
 
 static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
                             const unsigned char *iv,int enc);
 static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-                          const unsigned char *in, unsigned int inl);
+                          const unsigned char *in, size_t inl);
 
 
 typedef struct
@@ -113,13 +114,25 @@ static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
        }
 
 static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-                          const unsigned char *in, unsigned int inl)
+                          const unsigned char *in, size_t inl)
        {
-       DES_xcbc_encrypt(in,out,inl,&data(ctx)->ks,
+       while (inl>=EVP_MAXCHUNK)
+               {
+               DES_xcbc_encrypt(in,out,(long)EVP_MAXCHUNK,&data(ctx)->ks,
                         (DES_cblock *)&(ctx->iv[0]),
                         &data(ctx)->inw,
                         &data(ctx)->outw,
                         ctx->encrypt);
+               inl-=EVP_MAXCHUNK;
+               in +=EVP_MAXCHUNK;
+               out+=EVP_MAXCHUNK;
+               }
+       if (inl)
+               DES_xcbc_encrypt(in,out,(long)inl,&data(ctx)->ks,
+                       (DES_cblock *)&(ctx->iv[0]),
+                       &data(ctx)->inw,
+                       &data(ctx)->outw,
+                       ctx->encrypt);
        return 1;
        }
 #endif