/* crypto/evp/m_btc.c */
/* ====================================================================
 * Copyright (c) 2014 - 2016 The GmSSL 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 GmSSL Project.
 *    (http://gmssl.org/)"
 *
 * 4. The name "GmSSL Project" must not be used to endorse or promote
 *    products derived from this software without prior written
 *    permission. For written permission, please contact
 *    guanzhi1980@gmail.com.
 *
 * 5. Products derived from this software may not be called "GmSSL"
 *    nor may "GmSSL" appear in their names without prior written
 *    permission of the GmSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the GmSSL Project
 *    (http://gmssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE GmSSL 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 GmSSL 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;
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 * 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 module is to support crypto-currency such as Bitcoin
 */

#include <stdio.h>
#include "cryptlib.h"

#ifndef OPENSSL_NO_GMSSL

#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/sha.h>
#include <openssl/ripemd.h>

static int init(EVP_MD_CTX *ctx)
{
	SHA256_Init(ctx->md_data->sha256);
	RIPEMD_Init(ctx->md_data->rmd160);
}

static int update(EVP_MD_CTX *ctx, const void *in, size_t inlen)
{
	SHA256_Update(ctx, in, inlen);
}

static int final(EVP_MD_CTX *ctx, unsigned char *md)
{
	return sm3_final(ctx->md_data, md);
}

static const EVP_MD sm3_md = {
	NID_btchash,
	NID_sm2sign_with_sm3,
	SM3_DIGEST_LENGTH,
	0,
	init,
	update,
	final,
	NULL,
	NULL,
	(evp_sign_method *)SM2_sign,
	(evp_verify_method *)SM2_verify,
	{EVP_PKEY_EC, 0, 0, 0},
	SM3_BLOCK_SIZE,
	sizeof(EVP_MD *) + sizeof(sm3_ctx_t),
};

const EVP_MD *EVP_btc160(void)
{
        return &btc160_md;
}

const EVP_MD *EVP_btc256(void)
{
	return &btc256_md;
}

const EVP_MD *EVP_sm3_rmd160(void)
{
	return 0;
}


#endif