X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=crypto%2Fevp%2Fe_xcbc_d.c;h=250e88c8c5d7520b8698a33b5fd84f8c758078a2;hb=701d593f7095db84459c76265349a83d30a4cae5;hp=faec338e3880d3fc5f699252236e04117fa3d20f;hpb=135883505078a868349e0a3c24514099e3cb2dac;p=oweals%2Fopenssl.git

diff --git a/crypto/evp/e_xcbc_d.c b/crypto/evp/e_xcbc_d.c
index faec338e38..250e88c8c5 100644
--- a/crypto/evp/e_xcbc_d.c
+++ b/crypto/evp/e_xcbc_d.c
@@ -56,16 +56,31 @@
  * [including the GNU Public Licence.]
  */
 
-#ifndef OPENSSL_NO_DES
 #include <stdio.h>
 #include "cryptlib.h"
+
+#ifndef OPENSSL_NO_DES
+
 #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
+    {
+    DES_key_schedule ks;/* key schedule */
+    DES_cblock inw;
+    DES_cblock outw;
+    } DESX_CBC_KEY;
+
+#define data(ctx) ((DESX_CBC_KEY *)(ctx)->cipher_data)
+
 static const EVP_CIPHER d_xcbc_cipher=
 	{
 	NID_desx_cbc,
@@ -74,10 +89,10 @@ static const EVP_CIPHER d_xcbc_cipher=
 	desx_cbc_init_key,
 	desx_cbc_cipher,
 	NULL,
-	sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+
-		sizeof((((EVP_CIPHER_CTX *)NULL)->c.desx_cbc)),
+	sizeof(DESX_CBC_KEY),
 	EVP_CIPHER_set_asn1_iv,
 	EVP_CIPHER_get_asn1_iv,
+	NULL,
 	NULL
 	};
 
@@ -89,23 +104,35 @@ const EVP_CIPHER *EVP_desx_cbc(void)
 static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 			     const unsigned char *iv, int enc)
 	{
-	des_cblock *deskey = (des_cblock *)key;
+	DES_cblock *deskey = (DES_cblock *)key;
 
-	des_set_key_unchecked(deskey,ctx->c.desx_cbc.ks);
-	memcpy(&(ctx->c.desx_cbc.inw[0]),&(key[8]),8);
-	memcpy(&(ctx->c.desx_cbc.outw[0]),&(key[16]),8);
+	DES_set_key_unchecked(deskey,&data(ctx)->ks);
+	memcpy(&data(ctx)->inw[0],&key[8],8);
+	memcpy(&data(ctx)->outw[0],&key[16],8);
 
 	return 1;
 	}
 
 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,ctx->c.desx_cbc.ks,
-		(des_cblock *)&(ctx->iv[0]),
-		&ctx->c.desx_cbc.inw,
-		&ctx->c.desx_cbc.outw,
-		ctx->encrypt);
+	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