1 /*
2 * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include <stdio.h>
11 #include "internal/cryptlib.h"
12 #include <openssl/evp.h>
13 #include <openssl/objects.h>
14 #include <openssl/x509.h>
15 #include "crypto/evp.h"
16
init(EVP_MD_CTX * ctx)17 static int init(EVP_MD_CTX *ctx)
18 {
19 return 1;
20 }
21
update(EVP_MD_CTX * ctx,const void * data,size_t count)22 static int update(EVP_MD_CTX *ctx, const void *data, size_t count)
23 {
24 return 1;
25 }
26
final(EVP_MD_CTX * ctx,unsigned char * md)27 static int final(EVP_MD_CTX *ctx, unsigned char *md)
28 {
29 return 1;
30 }
31
32 static const EVP_MD null_md = {
33 NID_undef,
34 NID_undef,
35 0,
36 0,
37 EVP_ORIG_GLOBAL,
38 init,
39 update,
40 final,
41 NULL,
42 NULL,
43 0,
44 sizeof(EVP_MD *),
45 };
46
EVP_md_null(void)47 const EVP_MD *EVP_md_null(void)
48 {
49 return &null_md;
50 }
51
