/*

 * Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

/*

 * MDC2 low level APIs are deprecated for public use, but still ok for

 * internal use.

 */

#include "internal/deprecated.h"

#include <openssl/crypto.h>

#include <openssl/params.h>

#include <openssl/mdc2.h>

#include <openssl/core_names.h>

#include <openssl/err.h>

#include <openssl/proverr.h>

#include "prov/digestcommon.h"

#include "prov/implementations.h"

static OSSL_FUNC_digest_set_ctx_params_fn mdc2_set_ctx_params;

static OSSL_FUNC_digest_settable_ctx_params_fn mdc2_settable_ctx_params;

static const OSSL_PARAM known_mdc2_settable_ctx_params[] = {

    OSSL_PARAM_uint(OSSL_DIGEST_PARAM_PAD_TYPE, NULL),

    OSSL_PARAM_END

};

static const OSSL_PARAM *mdc2_settable_ctx_params(ossl_unused void *ctx,

                                                  ossl_unused void *provctx)

{

    return known_mdc2_settable_ctx_params;

}

static int mdc2_set_ctx_params(void *vctx, const OSSL_PARAM params[])

{

    const OSSL_PARAM *p;

    MDC2_CTX *ctx = (MDC2_CTX *)vctx;

    if (ctx == NULL)

        return 0;

    if (ossl_param_is_empty(params))

        return 1;

    p = OSSL_PARAM_locate_const(params, OSSL_DIGEST_PARAM_PAD_TYPE);

    if (p != NULL && !OSSL_PARAM_get_uint(p, &ctx->pad_type)) {

        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);

        return 0;

    }

    return 1;

}

/* ossl_mdc2_functions */

IMPLEMENT_digest_functions_with_settable_ctx(

    mdc2, MDC2_CTX, MDC2_BLOCK, MDC2_DIGEST_LENGTH, 0,

    MDC2_Init, MDC2_Update, MDC2_Final,

    mdc2_settable_ctx_params, mdc2_set_ctx_params)