/*
* Copyright 1995-2022 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
*/
/*
* EVP _meth_ APIs are deprecated for public use, but still ok for
* internal use.
*/
#include "internal/deprecated.h"
#include <stdio.h>
#include <string.h>
#include "internal/cryptlib.h"
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/params.h>
#include <openssl/core_names.h>
#include <openssl/rsa.h>
#include <openssl/dh.h>
#include <openssl/ec.h>
#include "crypto/evp.h"
#include "crypto/cryptlib.h"
#include "internal/provider.h"
#include "evp_local.h"
#if !defined(FIPS_MODULE)
# include "crypto/asn1.h"
int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
{
return evp_cipher_param_to_asn1_ex(c, type, NULL);
}
int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
{
return evp_cipher_asn1_to_param_ex(c, type, NULL);
}
int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *ctx, ASN1_TYPE *type)
{
int i = 0;
unsigned int l;
if (type != NULL) {
unsigned char iv[EVP_MAX_IV_LENGTH];
l = EVP_CIPHER_CTX_get_iv_length(ctx);
if (!ossl_assert(l <= sizeof(iv)))
return -1;
i = ASN1_TYPE_get_octetstring(type, iv, l);
if (i != (int)l)
return -1;
if (!EVP_CipherInit_ex(ctx, NULL, NULL, NULL, iv, -1))
return -1;
}
return i;
}
int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
{
int i = 0;
unsigned int j;
unsigned char *oiv = NULL;
if (type != NULL) {
oiv = (unsigned char *)EVP_CIPHER_CTX_original_iv(c);
j = EVP_CIPHER_CTX_get_iv_length(c);
OPENSSL_assert(j <= sizeof(c->iv));
i = ASN1_TYPE_set_octetstring(type, oiv, j);
}
return i;
}
int evp_cipher_param_to_asn1_ex(EVP_CIPHER_CTX *c, ASN1_TYPE *type,
evp_cipher_aead_asn1_params *asn1_params)
{
int ret = -1; /* Assume the worst */
const EVP_CIPHER *cipher = c->cipher;
/*
* For legacy implementations, we detect custom AlgorithmIdentifier
* parameter handling by checking if the function pointer