/*

 * Copyright 2019-2023 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

 */

/*

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

 * internal use.

 */

#include "internal/deprecated.h"

#include <openssl/crypto.h>

#include <openssl/core_dispatch.h>

#include <openssl/evp.h>

#include <openssl/sha.h>

#include <openssl/params.h>

#include <openssl/core_names.h>

#include "prov/digestcommon.h"

#include "prov/implementations.h"

#include "crypto/sha.h"

#define SHA2_FLAGS PROV_DIGEST_FLAG_ALGID_ABSENT

static OSSL_FUNC_digest_set_ctx_params_fn sha1_set_ctx_params;

static OSSL_FUNC_digest_settable_ctx_params_fn sha1_settable_ctx_params;

static const OSSL_PARAM known_sha1_settable_ctx_params[] = {

    {OSSL_DIGEST_PARAM_SSL3_MS, OSSL_PARAM_OCTET_STRING, NULL, 0, 0},

    OSSL_PARAM_END

};

static const OSSL_PARAM *sha1_settable_ctx_params(ossl_unused void *ctx,

                                                  ossl_unused void *provctx)

{

    return known_sha1_settable_ctx_params;

}

/* Special set_params method for SSL3 */

static int sha1_set_ctx_params(void *vctx, const OSSL_PARAM params[])

{

    const OSSL_PARAM *p;

    SHA_CTX *ctx = (SHA_CTX *)vctx;

    if (ctx == NULL)

        return 0;

    if (ossl_param_is_empty(params))

        return 1;

    p = OSSL_PARAM_locate_const(params, OSSL_DIGEST_PARAM_SSL3_MS);

    if (p != NULL && p->data_type == OSSL_PARAM_OCTET_STRING)

        return ossl_sha1_ctrl(ctx, EVP_CTRL_SSL3_MASTER_SECRET,

                              p->data_size, p->data);

    return 1;

}

/* ossl_sha1_functions */

IMPLEMENT_digest_functions_with_settable_ctx(

    sha1, SHA_CTX, SHA_CBLOCK, SHA_DIGEST_LENGTH, SHA2_FLAGS,

    SHA1_Init, SHA1_Update, SHA1_Final,

    sha1_settable_ctx_params, sha1_set_ctx_params)

/* ossl_sha224_functions */

IMPLEMENT_digest_functions(sha224, SHA256_CTX,

                           SHA256_CBLOCK, SHA224_DIGEST_LENGTH, SHA2_FLAGS,

                           SHA224_Init, SHA224_Update, SHA224_Final)

/* ossl_sha256_functions */

IMPLEMENT_digest_functions(sha256, SHA256_CTX,

                           SHA256_CBLOCK, SHA256_DIGEST_LENGTH, SHA2_FLAGS,

                           SHA256_Init, SHA256_Update, SHA256_Final)

#ifndef FIPS_MODULE

/* ossl_sha256_192_functions */

IMPLEMENT_digest_functions(sha256_192, SHA256_CTX,

                           SHA256_CBLOCK, SHA256_192_DIGEST_LENGTH, SHA2_FLAGS,

                           ossl_sha256_192_init, SHA256_Update, SHA256_Final)

#endif

/* ossl_sha384_functions */

IMPLEMENT_digest_functions(sha384, SHA512_CTX,

                           SHA512_CBLOCK, SHA384_DIGEST_LENGTH, SHA2_FLAGS,

                           SHA384_Init, SHA384_Update, SHA384_Final)

/* ossl_sha512_functions */

IMPLEMENT_digest_functions(sha512, SHA512_CTX,

                           SHA512_CBLOCK, SHA512_DIGEST_LENGTH, SHA2_FLAGS,

                           SHA512_Init, SHA512_Update, SHA512_Final)

/* ossl_sha512_224_functions */

IMPLEMENT_digest_functions(sha512_224, SHA512_CTX,

                           SHA512_CBLOCK, SHA224_DIGEST_LENGTH, SHA2_FLAGS,

                           sha512_224_init, SHA512_Update, SHA512_Final)

/* ossl_sha512_256_functions */

IMPLEMENT_digest_functions(sha512_256, SHA512_CTX,

                           SHA512_CBLOCK, SHA256_DIGEST_LENGTH, SHA2_FLAGS,

                           sha512_256_init, SHA512_Update, SHA512_Final)