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| /*
| * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
| *
| * Licensed under the OpenSSL license (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,
| 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;
| }
|
|
