150 lines
4.0 KiB
C
150 lines
4.0 KiB
C
/*
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* Copyright 1998-2016 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL license (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* NOCW */
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#include <stdio.h>
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#ifdef _OSD_POSIX
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# ifndef CHARSET_EBCDIC
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# define CHARSET_EBCDIC 1
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# endif
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#endif
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#ifdef CHARSET_EBCDIC
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# include <openssl/ebcdic.h>
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#endif
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#include <openssl/crypto.h>
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#include "des_local.h"
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/*
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* Added more values to handle illegal salt values the way normal crypt()
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* implementations do.
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*/
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static unsigned const char con_salt[128] = {
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0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
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0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0xE0, 0xE1,
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0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9,
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0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1,
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0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9,
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0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF, 0x00, 0x01,
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0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09,
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0x0A, 0x0B, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A,
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0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12,
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0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A,
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0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22,
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0x23, 0x24, 0x25, 0x20, 0x21, 0x22, 0x23, 0x24,
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0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C,
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0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34,
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0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C,
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0x3D, 0x3E, 0x3F, 0x40, 0x41, 0x42, 0x43, 0x44,
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};
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static unsigned const char cov_2char[64] = {
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0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
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0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44,
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0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C,
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0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
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0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62,
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0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
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0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72,
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0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A
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};
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char *DES_crypt(const char *buf, const char *salt)
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{
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static char buff[14];
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#ifndef CHARSET_EBCDIC
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return DES_fcrypt(buf, salt, buff);
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#else
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char e_salt[2 + 1];
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char e_buf[32 + 1]; /* replace 32 by 8 ? */
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char *ret;
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if (salt[0] == '\0' || salt[1] == '\0')
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return NULL;
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/* Copy salt, convert to ASCII. */
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e_salt[0] = salt[0];
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e_salt[1] = salt[1];
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e_salt[2] = '\0';
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ebcdic2ascii(e_salt, e_salt, sizeof(e_salt));
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/* Convert password to ASCII. */
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OPENSSL_strlcpy(e_buf, buf, sizeof(e_buf));
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ebcdic2ascii(e_buf, e_buf, sizeof(e_buf));
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/* Encrypt it (from/to ASCII); if it worked, convert back. */
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ret = DES_fcrypt(e_buf, e_salt, buff);
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if (ret != NULL)
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ascii2ebcdic(ret, ret, strlen(ret));
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return ret;
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#endif
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}
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char *DES_fcrypt(const char *buf, const char *salt, char *ret)
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{
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unsigned int i, j, x, y;
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DES_LONG Eswap0, Eswap1;
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DES_LONG out[2], ll;
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DES_cblock key;
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DES_key_schedule ks;
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unsigned char bb[9];
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unsigned char *b = bb;
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unsigned char c, u;
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x = ret[0] = salt[0];
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if (x == 0 || x >= sizeof(con_salt))
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return NULL;
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Eswap0 = con_salt[x] << 2;
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x = ret[1] = salt[1];
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if (x == 0 || x >= sizeof(con_salt))
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return NULL;
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Eswap1 = con_salt[x] << 6;
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/*
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* EAY r=strlen(buf); r=(r+7)/8;
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*/
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for (i = 0; i < 8; i++) {
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c = *(buf++);
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if (!c)
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break;
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key[i] = (c << 1);
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}
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for (; i < 8; i++)
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key[i] = 0;
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DES_set_key_unchecked(&key, &ks);
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fcrypt_body(&(out[0]), &ks, Eswap0, Eswap1);
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ll = out[0];
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l2c(ll, b);
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ll = out[1];
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l2c(ll, b);
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y = 0;
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u = 0x80;
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bb[8] = 0;
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for (i = 2; i < 13; i++) {
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c = 0;
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for (j = 0; j < 6; j++) {
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c <<= 1;
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if (bb[y] & u)
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c |= 1;
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u >>= 1;
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if (!u) {
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y++;
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u = 0x80;
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}
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}
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ret[i] = cov_2char[c];
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}
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ret[13] = '\0';
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return ret;
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}
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