crypto/mdc2/mdc2_one.c

   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/mdc2.h>
  19
  20 unsigned char *MDC2(const unsigned char *d, size_t n, unsigned char *md)
  21 {
  22     MDC2_CTX c;
  23     static unsigned char m[MDC2_DIGEST_LENGTH];
  24
  25     if (md == NULL)
  26         md = m;
  27     if (!MDC2_Init(&c))
  28         return NULL;
  29     MDC2_Update(&c, d, n);
  30     MDC2_Final(md, &c);
  31     OPENSSL_cleanse(&c, sizeof(c)); /* security consideration */
  32     return md;
  33 }