mirror of https://github.com/openssl/openssl.git
136 lines
2.8 KiB
C
136 lines
2.8 KiB
C
/*
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* Copyright 2018-2019 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/engine.h>
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#include <openssl/evp.h>
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#include <openssl/x509v3.h>
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#include <openssl/kdf.h>
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#include "internal/asn1_int.h"
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#include "internal/evp_int.h"
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#include "internal/numbers.h"
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#include "evp_locl.h"
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EVP_KDF_CTX *EVP_KDF_CTX_new(const EVP_KDF *kdf)
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{
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EVP_KDF_CTX *ctx = NULL;
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if (kdf == NULL)
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return NULL;
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ctx = OPENSSL_zalloc(sizeof(EVP_KDF_CTX));
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if (ctx == NULL || (ctx->impl = kdf->new()) == NULL) {
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EVPerr(EVP_F_EVP_KDF_CTX_NEW, ERR_R_MALLOC_FAILURE);
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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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EVP_KDF_CTX *EVP_KDF_CTX_new_id(int id)
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{
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const EVP_KDF *kdf = EVP_get_kdfbynid(id);
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return EVP_KDF_CTX_new(kdf);
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}
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int EVP_KDF_nid(const EVP_KDF *kdf)
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{
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return kdf->type;
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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_free(EVP_KDF_CTX *ctx)
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{
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if (ctx == NULL)
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return;
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ctx->meth->free(ctx->impl);
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OPENSSL_free(ctx);
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}
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void EVP_KDF_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->impl);
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}
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int EVP_KDF_ctrl(EVP_KDF_CTX *ctx, int cmd, ...)
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{
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int ret;
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va_list args;
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va_start(args, cmd);
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ret = EVP_KDF_vctrl(ctx, cmd, args);
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va_end(args);
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if (ret == -2)
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EVPerr(EVP_F_EVP_KDF_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
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return ret;
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}
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int EVP_KDF_vctrl(EVP_KDF_CTX *ctx, int cmd, va_list args)
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{
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if (ctx == NULL)
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return 0;
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return ctx->meth->ctrl(ctx->impl, cmd, args);
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}
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int EVP_KDF_ctrl_str(EVP_KDF_CTX *ctx, const char *type, const char *value)
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{
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int ret;
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if (ctx == NULL)
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return 0;
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if (ctx->meth->ctrl_str == NULL) {
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EVPerr(EVP_F_EVP_KDF_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
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return -2;
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}
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ret = ctx->meth->ctrl_str(ctx->impl, type, value);
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if (ret == -2)
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EVPerr(EVP_F_EVP_KDF_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
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return ret;
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}
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size_t EVP_KDF_size(EVP_KDF_CTX *ctx)
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{
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if (ctx == NULL)
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return 0;
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if (ctx->meth->size == NULL)
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return SIZE_MAX;
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return ctx->meth->size(ctx->impl);
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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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{
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if (ctx == NULL)
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return 0;
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return ctx->meth->derive(ctx->impl, key, keylen);
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}
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