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
25unsigned 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