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/*
* Copyright 2018-2019 The OpenSSL Project Authors. All Rights Reserved.
* Copyright (c) 2018-2019, Oracle and/or its affiliates. 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
*/
#include <stdio.h>
#include <stdlib.h>
#include "internal/cryptlib.h"
#include <openssl/engine.h>
#include <openssl/evp.h>
#include <openssl/x509v3.h>
#include <openssl/kdf.h>
#include "internal/asn1_int.h"
#include "internal/evp_int.h"
#include "internal/numbers.h"
#include "evp_locl.h"
EVP_KDF_CTX *EVP_KDF_CTX_new(const EVP_KDF *kdf)
{
EVP_KDF_CTX *ctx = NULL;
if (kdf == NULL)
return NULL;
ctx = OPENSSL_zalloc(sizeof(EVP_KDF_CTX));
if (ctx == NULL || (ctx->impl = kdf->new()) == NULL) {
EVPerr(EVP_F_EVP_KDF_CTX_NEW, ERR_R_MALLOC_FAILURE);
OPENSSL_free(ctx);
ctx = NULL;
} else {
ctx->meth = kdf;
}
return ctx;
}
EVP_KDF_CTX *EVP_KDF_CTX_new_id(int id)
{
const EVP_KDF *kdf = EVP_get_kdfbynid(id);
return EVP_KDF_CTX_new(kdf);
}
int EVP_KDF_nid(const EVP_KDF *kdf)
{
return kdf->type;
}
const EVP_KDF *EVP_KDF_CTX_kdf(EVP_KDF_CTX *ctx)
{
return ctx->meth;
}
void EVP_KDF_CTX_free(EVP_KDF_CTX *ctx)
{
if (ctx == NULL)
return;
ctx->meth->free(ctx->impl);
OPENSSL_free(ctx);
}
void EVP_KDF_reset(EVP_KDF_CTX *ctx)
{
if (ctx == NULL)
return;
if (ctx->meth->reset != NULL)
ctx->meth->reset(ctx->impl);
}
int EVP_KDF_ctrl(EVP_KDF_CTX *ctx, int cmd, ...)
{
int ret;
va_list args;
va_start(args, cmd);
ret = EVP_KDF_vctrl(ctx, cmd, args);
va_end(args);
if (ret == -2)
EVPerr(EVP_F_EVP_KDF_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
return ret;
}
int EVP_KDF_vctrl(EVP_KDF_CTX *ctx, int cmd, va_list args)
{
if (ctx == NULL)
return 0;
return ctx->meth->ctrl(ctx->impl, cmd, args);
}
int EVP_KDF_ctrl_str(EVP_KDF_CTX *ctx, const char *type, const char *value)
{
int ret;
if (ctx == NULL)
return 0;
if (ctx->meth->ctrl_str == NULL) {
EVPerr(EVP_F_EVP_KDF_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
return -2;
}
ret = ctx->meth->ctrl_str(ctx->impl, type, value);
if (ret == -2)
EVPerr(EVP_F_EVP_KDF_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
return ret;
}
size_t EVP_KDF_size(EVP_KDF_CTX *ctx)
{
if (ctx == NULL)
return 0;
if (ctx->meth->size == NULL)
return SIZE_MAX;
return ctx->meth->size(ctx->impl);
}
int EVP_KDF_derive(EVP_KDF_CTX *ctx, unsigned char *key, size_t keylen)
{
if (ctx == NULL)
return 0;
return ctx->meth->derive(ctx->impl, key, keylen);
}
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