mirror of https://github.com/openssl/openssl.git
168 lines
3.7 KiB
C
168 lines
3.7 KiB
C
/*
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* Copyright 2018 The OpenSSL Project Authors. All Rights Reserved.
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* Copyright (c) 2018, 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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typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
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/* This array needs to be in order of NIDs */
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static const EVP_KDF_METHOD *standard_methods[] = {
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&pbkdf2_kdf_meth,
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#ifndef OPENSSL_NO_SCRYPT
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&scrypt_kdf_meth,
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#endif
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&tls1_prf_kdf_meth,
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&hkdf_kdf_meth,
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&sshkdf_kdf_meth,
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&ss_kdf_meth
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};
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DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_KDF_METHOD *, const EVP_KDF_METHOD *,
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kmeth);
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static int kmeth_cmp(const EVP_KDF_METHOD *const *a,
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const EVP_KDF_METHOD *const *b)
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{
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return ((*a)->type - (*b)->type);
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}
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IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_KDF_METHOD *, const EVP_KDF_METHOD *,
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kmeth);
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static const EVP_KDF_METHOD *kdf_meth_find(int type)
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{
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EVP_KDF_METHOD tmp;
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const EVP_KDF_METHOD *t = &tmp, **ret;
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tmp.type = type;
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ret = OBJ_bsearch_kmeth(&t, standard_methods,
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OSSL_NELEM(standard_methods));
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if (ret == NULL || *ret == NULL)
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return NULL;
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return *ret;
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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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EVP_KDF_CTX *ret;
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const EVP_KDF_METHOD *kmeth;
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kmeth = kdf_meth_find(id);
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if (kmeth == NULL) {
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EVPerr(EVP_F_EVP_KDF_CTX_NEW_ID, EVP_R_UNSUPPORTED_ALGORITHM);
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return NULL;
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}
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ret = OPENSSL_zalloc(sizeof(*ret));
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if (ret == NULL) {
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EVPerr(EVP_F_EVP_KDF_CTX_NEW_ID, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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if (kmeth->new != NULL && (ret->impl = kmeth->new()) == NULL) {
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EVP_KDF_CTX_free(ret);
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return NULL;
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}
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ret->kmeth = kmeth;
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return ret;
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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->kmeth->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->kmeth->reset != NULL)
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ctx->kmeth->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->kmeth->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->kmeth->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->kmeth->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->kmeth->size == NULL)
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return SIZE_MAX;
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return ctx->kmeth->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->kmeth->derive(ctx->impl, key, keylen);
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}
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