1/* NOCW */ 2#include <stdio.h> 3#ifdef _OSD_POSIX 4# ifndef CHARSET_EBCDIC 5# define CHARSET_EBCDIC 1 6# endif 7#endif 8#ifdef CHARSET_EBCDIC 9# include <openssl/ebcdic.h> 10#endif 11 12/* 13 * This version of crypt has been developed from my MIT compatible DES 14 * library. Eric Young (eay@cryptsoft.com) 15 */ 16 17/* 18 * Modification by Jens Kupferschmidt (Cu) I have included directive PARA for 19 * shared memory computers. I have included a directive LONGCRYPT to using 20 * this routine to cipher passwords with more then 8 bytes like HP-UX 10.x it 21 * used. The MAXPLEN definition is the maximum of length of password and can 22 * changed. I have defined 24. 23 */ 24 25#include "des_locl.h" 26 27/* 28 * Added more values to handle illegal salt values the way normal crypt() 29 * implementations do. The patch was sent by Bjorn Gronvall <bg@sics.se> 30 */ 31static unsigned const char con_salt[128] = { 32 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9, 33 0xDA, 0xDB, 0xDC, 0xDD, 0xDE, 0xDF, 0xE0, 0xE1, 34 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 35 0xEA, 0xEB, 0xEC, 0xED, 0xEE, 0xEF, 0xF0, 0xF1, 36 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 37 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF, 0x00, 0x01, 38 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 39 0x0A, 0x0B, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 40 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 41 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 42 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 43 0x23, 0x24, 0x25, 0x20, 0x21, 0x22, 0x23, 0x24, 44 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 45 0x2D, 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 46 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 47 0x3D, 0x3E, 0x3F, 0x40, 0x41, 0x42, 0x43, 0x44, 48}; 49 50static unsigned const char cov_2char[64] = { 51 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 52 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 53 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, 54 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, 55 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62, 56 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 57 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, 58 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A 59}; 60 61char *DES_crypt(const char *buf, const char *salt) 62{ 63 static char buff[14]; 64 65#ifndef CHARSET_EBCDIC 66 return (DES_fcrypt(buf, salt, buff)); 67#else 68 char e_salt[2 + 1]; 69 char e_buf[32 + 1]; /* replace 32 by 8 ? */ 70 char *ret; 71 72 /* Copy at most 2 chars of salt */ 73 if ((e_salt[0] = salt[0]) != '\0') 74 e_salt[1] = salt[1]; 75 76 /* Copy at most 32 chars of password */ 77 strncpy(e_buf, buf, sizeof(e_buf)); 78 79 /* Make sure we have a delimiter */ 80 e_salt[sizeof(e_salt) - 1] = e_buf[sizeof(e_buf) - 1] = '\0'; 81 82 /* Convert the e_salt to ASCII, as that's what DES_fcrypt works on */ 83 ebcdic2ascii(e_salt, e_salt, sizeof e_salt); 84 85 /* Convert the cleartext password to ASCII */ 86 ebcdic2ascii(e_buf, e_buf, sizeof e_buf); 87 88 /* Encrypt it (from/to ASCII) */ 89 ret = DES_fcrypt(e_buf, e_salt, buff); 90 91 /* Convert the result back to EBCDIC */ 92 ascii2ebcdic(ret, ret, strlen(ret)); 93 94 return ret; 95#endif 96} 97 98char *DES_fcrypt(const char *buf, const char *salt, char *ret) 99{ 100 unsigned int i, j, x, y; 101 DES_LONG Eswap0, Eswap1; 102 DES_LONG out[2], ll; 103 DES_cblock key; 104 DES_key_schedule ks; 105 unsigned char bb[9]; 106 unsigned char *b = bb; 107 unsigned char c, u; 108 109 /* 110 * eay 25/08/92 If you call crypt("pwd","*") as often happens when you 111 * have * as the pwd field in /etc/passwd, the function returns 112 * *\0XXXXXXXXX The \0 makes the string look like * so the pwd "*" would 113 * crypt to "*". This was found when replacing the crypt in our shared 114 * libraries. People found that the disabled accounts effectively had no 115 * passwd :-(. 116 */ 117#ifndef CHARSET_EBCDIC 118 x = ret[0] = ((salt[0] == '\0') ? 'A' : salt[0]); 119 Eswap0 = con_salt[x] << 2; 120 x = ret[1] = ((salt[1] == '\0') ? 'A' : salt[1]); 121 Eswap1 = con_salt[x] << 6; 122#else 123 x = ret[0] = ((salt[0] == '\0') ? os_toascii['A'] : salt[0]); 124 Eswap0 = con_salt[x] << 2; 125 x = ret[1] = ((salt[1] == '\0') ? os_toascii['A'] : salt[1]); 126 Eswap1 = con_salt[x] << 6; 127#endif 128 129 /* 130 * EAY r=strlen(buf); r=(r+7)/8; 131 */ 132 for (i = 0; i < 8; i++) { 133 c = *(buf++); 134 if (!c) 135 break; 136 key[i] = (c << 1); 137 } 138 for (; i < 8; i++) 139 key[i] = 0; 140 141 DES_set_key_unchecked(&key, &ks); 142 fcrypt_body(&(out[0]), &ks, Eswap0, Eswap1); 143 144 ll = out[0]; 145 l2c(ll, b); 146 ll = out[1]; 147 l2c(ll, b); 148 y = 0; 149 u = 0x80; 150 bb[8] = 0; 151 for (i = 2; i < 13; i++) { 152 c = 0; 153 for (j = 0; j < 6; j++) { 154 c <<= 1; 155 if (bb[y] & u) 156 c |= 1; 157 u >>= 1; 158 if (!u) { 159 y++; 160 u = 0x80; 161 } 162 } 163 ret[i] = cov_2char[c]; 164 } 165 ret[13] = '\0'; 166 return (ret); 167} 168