mirror of https://github.com/openssl/openssl
52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/*
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* Copyright 1995-2021 The OpenSSL Project Authors. 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 "internal/cryptlib.h"
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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#include "crypto/evp.h"
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static int null_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc);
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static int null_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl);
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static const EVP_CIPHER n_cipher = {
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NID_undef,
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1, 0, 0, 0,
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EVP_ORIG_GLOBAL,
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null_init_key,
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null_cipher,
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NULL,
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0,
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NULL,
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NULL,
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NULL,
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NULL
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};
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const EVP_CIPHER *EVP_enc_null(void)
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{
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return &n_cipher;
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}
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static int null_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc)
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{
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return 1;
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}
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static int null_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl)
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{
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if (in != out)
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memcpy(out, in, inl);
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return 1;
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}
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