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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