ext-libressl-portable/crypto/evp/cipher_method_lib.c

/*	$OpenBSD: cipher_method_lib.c,v 1.8 2023/03/01 11:27:37 tb Exp $ */
/*
 * Written by Richard Levitte (levitte@openssl.org) for the OpenSSL project
 * 2015.
 */
/* ====================================================================
 * Copyright (c) 2015 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include <stdlib.h>

#include <openssl/evp.h>

#include "evp_local.h"

EVP_CIPHER *
EVP_CIPHER_meth_new(int cipher_type, int block_size, int key_len)
{
	EVP_CIPHER *cipher;

	if ((cipher = calloc(1, sizeof(*cipher))) == NULL)
		return NULL;

	cipher->nid = cipher_type;
	cipher->block_size = block_size;
	cipher->key_len = key_len;

	return cipher;
}

EVP_CIPHER *
EVP_CIPHER_meth_dup(const EVP_CIPHER *cipher)
{
	EVP_CIPHER *copy;

	if ((copy = calloc(1, sizeof(*copy))) == NULL)
		return NULL;

	*copy = *cipher;

	return copy;
}

void
EVP_CIPHER_meth_free(EVP_CIPHER *cipher)
{
	free(cipher);
}

int
EVP_CIPHER_meth_set_iv_length(EVP_CIPHER *cipher, int iv_len)
{
	cipher->iv_len = iv_len;

	return 1;
}

int
EVP_CIPHER_meth_set_flags(EVP_CIPHER *cipher, unsigned long flags)
{
	cipher->flags = flags;

	return 1;
}

int
EVP_CIPHER_meth_set_impl_ctx_size(EVP_CIPHER *cipher, int ctx_size)
{
	cipher->ctx_size = ctx_size;

	return 1;
}

int
EVP_CIPHER_meth_set_init(EVP_CIPHER *cipher,
    int (*init)(EVP_CIPHER_CTX *ctx, const unsigned char *key,
    const unsigned char *iv, int enc))
{
	cipher->init = init;

	return 1;
}

int
EVP_CIPHER_meth_set_do_cipher(EVP_CIPHER *cipher,
    int (*do_cipher)(EVP_CIPHER_CTX *ctx, unsigned char *out,
    const unsigned char *in, size_t inl))
{
	cipher->do_cipher = do_cipher;

	return 1;
}

int
EVP_CIPHER_meth_set_cleanup(EVP_CIPHER *cipher,
    int (*cleanup)(EVP_CIPHER_CTX *))
{
	cipher->cleanup = cleanup;

	return 1;
}

int
EVP_CIPHER_meth_set_set_asn1_params(EVP_CIPHER *cipher,
    int (*set_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *))
{
	cipher->set_asn1_parameters = set_asn1_parameters;

	return 1;
}

int
EVP_CIPHER_meth_set_get_asn1_params(EVP_CIPHER *cipher,
    int (*get_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *))
{
	cipher->get_asn1_parameters = get_asn1_parameters;

	return 1;
}

int
EVP_CIPHER_meth_set_ctrl(EVP_CIPHER *cipher,
    int (*ctrl)(EVP_CIPHER_CTX *, int type, int arg, void *ptr))
{
	cipher->ctrl = ctrl;

	return 1;
}