/* crypto/evp/e_xcbc_d.c */
-/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
#include <stdio.h>
#include "cryptlib.h"
-#include "evp.h"
-#include "objects.h"
-#ifndef NOPROTO
-static void desx_cbc_init_key(EVP_CIPHER_CTX *ctx, unsigned char *key,
- unsigned char *iv,int enc);
-static void desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- unsigned char *in, unsigned int inl);
-#else
-static void desx_cbc_init_key();
-static void desx_cbc_cipher();
-#endif
+#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, size_t inl);
+
-static EVP_CIPHER d_xcbc_cipher=
+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,
8,24,8,
+ EVP_CIPH_CBC_MODE,
desx_cbc_init_key,
desx_cbc_cipher,
+ NULL,
+ sizeof(DESX_CBC_KEY),
+ EVP_CIPHER_set_asn1_iv,
+ EVP_CIPHER_get_asn1_iv,
+ NULL,
+ NULL
};
-EVP_CIPHER *EVP_desx_cbc()
+const EVP_CIPHER *EVP_desx_cbc(void)
{
return(&d_xcbc_cipher);
}
-static void desx_cbc_init_key(ctx,key,iv,enc)
-EVP_CIPHER_CTX *ctx;
-unsigned char *key;
-unsigned char *iv;
-int enc;
+static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
{
- if (iv != NULL)
- memcpy(&(ctx->c.desx_cbc.oiv[0]),iv,8);
- memcpy(&(ctx->c.desx_cbc.iv[0]),&(ctx->c.desx_cbc.oiv[0]),8);
- if (key != NULL)
- {
- des_set_key((des_cblock *)key,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_cblock *deskey = (DES_cblock *)key;
+
+ 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 void desx_cbc_cipher(ctx,out,in,inl)
-EVP_CIPHER_CTX *ctx;
-unsigned char *out;
-unsigned char *in;
-unsigned int inl;
+static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inl)
{
- des_xcbc_encrypt(
- (des_cblock *)in,(des_cblock *)out,
- (long)inl, ctx->c.desx_cbc.ks,
- (des_cblock *)&(ctx->c.desx_cbc.iv[0]),
- (des_cblock *)&(ctx->c.desx_cbc.inw[0]),
- (des_cblock *)&(ctx->c.desx_cbc.outw[0]),
- 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