#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 des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv,int enc);
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv,int enc);
typedef struct
{
DES_key_schedule ks1;
DES_key_schedule ks2;
DES_key_schedule ks3;
} DES_EDE_KEY;
#define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data)
static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
BLOCK_CIPHER_ecb_loop()
DES_ecb3_encrypt(in + i,out + i,
&data(ctx)->ks1, &data(ctx)->ks2,
&data(ctx)->ks3,
ctx->encrypt);
return 1;
}
static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
DES_ede3_ofb64_encrypt(in, out, (long)inl,
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
(DES_cblock *)ctx->iv, &ctx->num);
return 1;
}
static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
#ifdef KSSL_DEBUG
{
int i;
char *cp;
printf("des_ede_cbc_cipher(ctx=%lx, buflen=%d)\n", ctx, ctx->buf_len);
printf("\t iv= ");
for(i=0;i<8;i++)
printf("%02X",ctx->iv[i]);
printf("\n");
}
#endif
DES_ede3_cbc_encrypt(in, out, (long)inl,
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
(DES_cblock *)ctx->iv, ctx->encrypt);
return 1;
}
static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
DES_ede3_cfb64_encrypt(in, out, (long)inl,
&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
return 1;
}
static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
unsigned int n;
unsigned char c[1],d[1];
for(n=0 ; n < inl ; ++n)
{
c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
DES_ede3_cfb_encrypt(c,d,1,1,
&data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
(DES_cblock *)ctx->iv,ctx->encrypt);
out[n/8]=(out[n/8]&~(0x80 >> (n%8)))|((d[0]&0x80) >> (n%8));
}
return 1;
}
static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
DES_ede3_cfb_encrypt(in,out,8,inl,
&data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
(DES_cblock *)ctx->iv,ctx->encrypt);
return 1;
}
BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64,
EVP_CIPH_FLAG_FIPS, des_ede_init_key, NULL,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL)
#define des_ede3_cfb64_cipher des_ede_cfb64_cipher
#define des_ede3_ofb_cipher des_ede_ofb_cipher
#define des_ede3_cbc_cipher des_ede_cbc_cipher
#define des_ede3_ecb_cipher des_ede_ecb_cipher
BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64,
EVP_CIPH_FLAG_FIPS, des_ede3_init_key, NULL,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,
NULL)
BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1,
EVP_CIPH_FLAG_FIPS, des_ede3_init_key,NULL,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,NULL)
BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8,
EVP_CIPH_FLAG_FIPS, des_ede3_init_key,NULL,
EVP_CIPHER_set_asn1_iv,
EVP_CIPHER_get_asn1_iv,NULL)
static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
DES_cblock *deskey = (DES_cblock *)key;
DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
memcpy(&data(ctx)->ks3,&data(ctx)->ks1,
sizeof(data(ctx)->ks1));
return 1;
}
static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
DES_cblock *deskey = (DES_cblock *)key;
#ifdef KSSL_DEBUG
{
int i;
printf("des_ede3_init_key(ctx=%lx)\n", ctx);
printf("\tKEY= ");
for(i=0;i<24;i++) printf("%02X",key[i]); printf("\n");
printf("\t IV= ");
for(i=0;i<8;i++) printf("%02X",iv[i]); printf("\n");
}
#endif
DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1);
DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2);
DES_set_key_unchecked(&deskey[2],&data(ctx)->ks3);
return 1;
}
const EVP_CIPHER *EVP_des_ede(void)
{
return &des_ede_ecb;
}
const EVP_CIPHER *EVP_des_ede3(void)
{
return &des_ede3_ecb;
}
#endif