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 * MD4 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 <string.h> 18 #include <openssl/md4.h> 19 #include <openssl/crypto.h> 20 21 #ifdef CHARSET_EBCDIC 22 # include <openssl/ebcdic.h> 23 #endif 24 25 unsigned char *MD4(const unsigned char *d, size_t n, unsigned char *md) 26 { 27 MD4_CTX c; 28 static unsigned char m[MD4_DIGEST_LENGTH]; 29 30 if (md == NULL) 31 md = m; 32 if (!MD4_Init(&c)) 33 return NULL; 34 #ifndef CHARSET_EBCDIC 35 MD4_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 MD4_Update(&c, temp, chunk); 45 n -= chunk; 46 d += chunk; 47 } 48 } 49 #endif 50 MD4_Final(md, &c); 51 OPENSSL_cleanse(&c, sizeof(c)); /* security consideration */ 52 return md; 53 } 54