Coverage Report

Created: 2025-06-13 06:58

/src/openssl31/crypto/evp/kdf_lib.c
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/*
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 * Copyright 2018-2022 The OpenSSL Project Authors. All Rights Reserved.
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 * Copyright (c) 2018-2019, Oracle and/or its affiliates.  All rights reserved.
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 *
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 * Licensed under the Apache License 2.0 (the "License").  You may not use
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 * this file except in compliance with the License.  You can obtain a copy
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 * in the file LICENSE in the source distribution or at
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 * https://www.openssl.org/source/license.html
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 */
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#include <stdio.h>
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#include <stdlib.h>
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#include "internal/cryptlib.h"
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#include <openssl/evp.h>
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#include <openssl/kdf.h>
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#include <openssl/core.h>
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#include <openssl/core_names.h>
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#include "crypto/evp.h"
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#include "internal/numbers.h"
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#include "internal/provider.h"
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#include "evp_local.h"
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EVP_KDF_CTX *EVP_KDF_CTX_new(EVP_KDF *kdf)
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628k
{
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628k
    EVP_KDF_CTX *ctx = NULL;
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    if (kdf == NULL)
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0
        return NULL;
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    ctx = OPENSSL_zalloc(sizeof(EVP_KDF_CTX));
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    if (ctx == NULL
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        || (ctx->algctx = kdf->newctx(ossl_provider_ctx(kdf->prov))) == NULL
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        || !EVP_KDF_up_ref(kdf)) {
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        ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
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        if (ctx != NULL)
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            kdf->freectx(ctx->algctx);
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        OPENSSL_free(ctx);
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        ctx = NULL;
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    } else {
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        ctx->meth = kdf;
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    }
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    return ctx;
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}
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void EVP_KDF_CTX_free(EVP_KDF_CTX *ctx)
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{
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    if (ctx == NULL)
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0
        return;
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628k
    ctx->meth->freectx(ctx->algctx);
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    ctx->algctx = NULL;
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628k
    EVP_KDF_free(ctx->meth);
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    OPENSSL_free(ctx);
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}
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EVP_KDF_CTX *EVP_KDF_CTX_dup(const EVP_KDF_CTX *src)
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{
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    EVP_KDF_CTX *dst;
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    if (src == NULL || src->algctx == NULL || src->meth->dupctx == NULL)
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        return NULL;
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    dst = OPENSSL_malloc(sizeof(*dst));
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    if (dst == NULL) {
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        ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
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        return NULL;
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    }
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    memcpy(dst, src, sizeof(*dst));
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    if (!EVP_KDF_up_ref(dst->meth)) {
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        ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
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        OPENSSL_free(dst);
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        return NULL;
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    }
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    dst->algctx = src->meth->dupctx(src->algctx);
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    if (dst->algctx == NULL) {
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        EVP_KDF_CTX_free(dst);
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        return NULL;
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    }
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    return dst;
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}
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int evp_kdf_get_number(const EVP_KDF *kdf)
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{
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    return kdf->name_id;
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}
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const char *EVP_KDF_get0_name(const EVP_KDF *kdf)
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{
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    return kdf->type_name;
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}
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const char *EVP_KDF_get0_description(const EVP_KDF *kdf)
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{
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    return kdf->description;
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}
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int EVP_KDF_is_a(const EVP_KDF *kdf, const char *name)
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{
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    return kdf != NULL && evp_is_a(kdf->prov, kdf->name_id, NULL, name);
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}
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const OSSL_PROVIDER *EVP_KDF_get0_provider(const EVP_KDF *kdf)
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{
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    return kdf->prov;
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}
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const EVP_KDF *EVP_KDF_CTX_kdf(EVP_KDF_CTX *ctx)
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{
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    return ctx->meth;
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}
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void EVP_KDF_CTX_reset(EVP_KDF_CTX *ctx)
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{
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    if (ctx == NULL)
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        return;
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    if (ctx->meth->reset != NULL)
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        ctx->meth->reset(ctx->algctx);
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}
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size_t EVP_KDF_CTX_get_kdf_size(EVP_KDF_CTX *ctx)
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{
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    OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
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    size_t s = 0;
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    if (ctx == NULL)
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        return 0;
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    *params = OSSL_PARAM_construct_size_t(OSSL_KDF_PARAM_SIZE, &s);
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    if (ctx->meth->get_ctx_params != NULL
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        && ctx->meth->get_ctx_params(ctx->algctx, params))
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            return s;
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    if (ctx->meth->get_params != NULL
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        && ctx->meth->get_params(params))
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            return s;
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    return 0;
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}
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int EVP_KDF_derive(EVP_KDF_CTX *ctx, unsigned char *key, size_t keylen,
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                   const OSSL_PARAM params[])
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{
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    if (ctx == NULL)
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        return 0;
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    return ctx->meth->derive(ctx->algctx, key, keylen, params);
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}
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/*
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 * The {get,set}_params functions return 1 if there is no corresponding
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 * function in the implementation.  This is the same as if there was one,
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 * but it didn't recognise any of the given params, i.e. nothing in the
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 * bag of parameters was useful.
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 */
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int EVP_KDF_get_params(EVP_KDF *kdf, OSSL_PARAM params[])
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{
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    if (kdf->get_params != NULL)
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        return kdf->get_params(params);
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    return 1;
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}
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int EVP_KDF_CTX_get_params(EVP_KDF_CTX *ctx, OSSL_PARAM params[])
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{
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    if (ctx->meth->get_ctx_params != NULL)
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        return ctx->meth->get_ctx_params(ctx->algctx, params);
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    return 1;
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}
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int EVP_KDF_CTX_set_params(EVP_KDF_CTX *ctx, const OSSL_PARAM params[])
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2.05k
{
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    if (ctx->meth->set_ctx_params != NULL)
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        return ctx->meth->set_ctx_params(ctx->algctx, params);
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    return 1;
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}
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int EVP_KDF_names_do_all(const EVP_KDF *kdf,
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                         void (*fn)(const char *name, void *data),
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                         void *data)
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{
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    if (kdf->prov != NULL)
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        return evp_names_do_all(kdf->prov, kdf->name_id, fn, data);
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    return 1;
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0
}