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/*
* Copyright (c) 2004 The OpenBSD project
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "includes.h"
#include <openssl/evp.h>
#include <string.h>
#if !defined(EVP_CTRL_SET_ACSS_MODE) && (OPENSSL_VERSION_NUMBER >= 0x00907000L)
#include "acss.h"
#define data(ctx) ((EVP_ACSS_KEY *)(ctx)->cipher_data)
typedef struct {
ACSS_KEY ks;
} EVP_ACSS_KEY;
#define EVP_CTRL_SET_ACSS_MODE 0xff06
#define EVP_CTRL_SET_ACSS_SUBKEY 0xff07
static int
acss_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
acss_setkey(&data(ctx)->ks,key,enc,ACSS_DATA);
return 1;
}
static int
acss_ciph(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in,
unsigned int inl)
{
acss(&data(ctx)->ks,inl,in,out);
return 1;
}
static int
acss_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
{
switch(type) {
case EVP_CTRL_SET_ACSS_MODE:
data(ctx)->ks.mode = arg;
return 1;
case EVP_CTRL_SET_ACSS_SUBKEY:
acss_setsubkey(&data(ctx)->ks,(unsigned char *)ptr);
return 1;
default:
return -1;
}
}
const EVP_CIPHER *
evp_acss(void)
{
static EVP_CIPHER acss_cipher;
memset(&acss_cipher, 0, sizeof(EVP_CIPHER));
acss_cipher.nid = NID_undef;
acss_cipher.block_size = 1;
acss_cipher.key_len = 5;
acss_cipher.init = acss_init_key;
acss_cipher.do_cipher = acss_ciph;
acss_cipher.ctx_size = sizeof(EVP_ACSS_KEY);
acss_cipher.ctrl = acss_ctrl;
return (&acss_cipher);
}
#endif
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