/*

 * Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the Apache License 2.0 (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

/*

 * MD5 low level APIs are deprecated for public use, but still ok for

 * internal use.

 */

#include "internal/deprecated.h"

#include <stdio.h>

#include <string.h>

#include <openssl/md5.h>

#include <openssl/crypto.h>

#ifdef CHARSET_EBCDIC

# include <openssl/ebcdic.h>

#endif

unsigned char *MD5(const unsigned char *d, size_t n, unsigned char *md)

{

    MD5_CTX c;

    static unsigned char m[MD5_DIGEST_LENGTH];

    if (md == NULL)

        md = m;

    if (!MD5_Init(&c))

        return NULL;

#ifndef CHARSET_EBCDIC

    MD5_Update(&c, d, n);

#else

    {

        char temp[1024];

        unsigned long chunk;

        while (n > 0) {

            chunk = (n > sizeof(temp)) ? sizeof(temp) : n;

            ebcdic2ascii(temp, d, chunk);

            MD5_Update(&c, temp, chunk);

            n -= chunk;

            d += chunk;

        }

    }

#endif

    MD5_Final(md, &c);

    OPENSSL_cleanse(&c, sizeof(c)); /* security consideration */

    return md;

}