1 /*
2 * Copyright 1995-2020 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 /*
11 * MD2 low level APIs are deprecated for public use, but still ok for
12 * internal use.
13 */
14 #include "internal/deprecated.h"
15
16 #include <stdio.h>
17 #include "internal/cryptlib.h"
18 #include <openssl/md2.h>
19
20 /*
21 * This is a separate file so that #defines in cryptlib.h can map my MD
22 * functions to different names
23 */
24
MD2(const unsigned char * d,size_t n,unsigned char * md)25 unsigned char *MD2(const unsigned char *d, size_t n, unsigned char *md)
26 {
27 MD2_CTX c;
28 static unsigned char m[MD2_DIGEST_LENGTH];
29
30 if (md == NULL)
31 md = m;
32 if (!MD2_Init(&c))
33 return NULL;
34 #ifndef CHARSET_EBCDIC
35 MD2_Update(&c, d, n);
36 #else
37 {
38 char temp[1024];
39 unsigned long chunk;
40
41 while (n > 0) {
42 chunk = (n > sizeof(temp)) ? sizeof(temp) : n;
43 ebcdic2ascii(temp, d, chunk);
44 MD2_Update(&c, temp, chunk);
45 n -= chunk;
46 d += chunk;
47 }
48 }
49 #endif
50 MD2_Final(md, &c);
51 OPENSSL_cleanse(&c, sizeof(c)); /* Security consideration */
52 return md;
53 }
54