blob: af900c52989f83eeb9b29b8ddcd83e405b027fde [file] [log] [blame]
/*
* Copyright 1995-2021 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
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/evp.h>
#include <openssl/objects.h>
#include "crypto/evp.h"
static int null_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc);
static int null_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl);
static const EVP_CIPHER n_cipher = {
NID_undef,
1, 0, 0, 0,
EVP_ORIG_GLOBAL,
null_init_key,
null_cipher,
NULL,
0,
NULL,
NULL,
NULL,
NULL
};
const EVP_CIPHER *EVP_enc_null(void)
{
return &n_cipher;
}
static int null_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
return 1;
}
static int null_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, size_t inl)
{
if (in != out)
memcpy(out, in, inl);
return 1;
}