fcrypt.c revision 55714
155714Skris/* NOCW */ 255714Skris#include <stdio.h> 355714Skris#ifdef _OSD_POSIX 455714Skris#ifndef CHARSET_EBCDIC 555714Skris#define CHARSET_EBCDIC 1 655714Skris#endif 755714Skris#endif 855714Skris#ifdef CHARSET_EBCDIC 955714Skris#include <openssl/ebcdic.h> 1055714Skris#endif 1155714Skris 1255714Skris/* This version of crypt has been developed from my MIT compatable 1355714Skris * DES library. 1455714Skris * The library is available at pub/Crypto/DES at ftp.psy.uq.oz.au 1555714Skris * Eric Young (eay@cryptsoft.com) 1655714Skris */ 1755714Skris 1855714Skris/* Modification by Jens Kupferschmidt (Cu) 1955714Skris * I have included directive PARA for shared memory computers. 2055714Skris * I have included a directive LONGCRYPT to using this routine to cipher 2155714Skris * passwords with more then 8 bytes like HP-UX 10.x it used. The MAXPLEN 2255714Skris * definition is the maximum of lenght of password and can changed. I have 2355714Skris * defined 24. 2455714Skris */ 2555714Skris 2655714Skris#include "des_locl.h" 2755714Skris 2855714Skris/* Added more values to handle illegal salt values the way normal 2955714Skris * crypt() implementations do. The patch was sent by 3055714Skris * Bjorn Gronvall <bg@sics.se> 3155714Skris */ 3255714Skrisstatic unsigned const char con_salt[128]={ 3355714Skris0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9, 3455714Skris0xDA,0xDB,0xDC,0xDD,0xDE,0xDF,0xE0,0xE1, 3555714Skris0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9, 3655714Skris0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1, 3755714Skris0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9, 3855714Skris0xFA,0xFB,0xFC,0xFD,0xFE,0xFF,0x00,0x01, 3955714Skris0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09, 4055714Skris0x0A,0x0B,0x05,0x06,0x07,0x08,0x09,0x0A, 4155714Skris0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12, 4255714Skris0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A, 4355714Skris0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22, 4455714Skris0x23,0x24,0x25,0x20,0x21,0x22,0x23,0x24, 4555714Skris0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C, 4655714Skris0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34, 4755714Skris0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C, 4855714Skris0x3D,0x3E,0x3F,0x40,0x41,0x42,0x43,0x44, 4955714Skris}; 5055714Skris 5155714Skrisstatic unsigned const char cov_2char[64]={ 5255714Skris0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35, 5355714Skris0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44, 5455714Skris0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C, 5555714Skris0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54, 5655714Skris0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62, 5755714Skris0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A, 5855714Skris0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72, 5955714Skris0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A 6055714Skris}; 6155714Skris 6255714Skrisvoid fcrypt_body(DES_LONG *out,des_key_schedule ks, 6355714Skris DES_LONG Eswap0, DES_LONG Eswap1); 6455714Skris 6555714Skris#if !defined(PERL5) && !defined(__FreeBSD__) && !defined(NeXT) 6655714Skrischar *crypt(const char *buf, const char *salt) 6755714Skris { 6855714Skris return(des_crypt(buf, salt)); 6955714Skris } 7055714Skris#endif 7155714Skris 7255714Skrischar *des_crypt(const char *buf, const char *salt) 7355714Skris { 7455714Skris static char buff[14]; 7555714Skris 7655714Skris#ifndef CHARSET_EBCDIC 7755714Skris return(des_fcrypt(buf,salt,buff)); 7855714Skris#else 7955714Skris char e_salt[2+1]; 8055714Skris char e_buf[32+1]; /* replace 32 by 8 ? */ 8155714Skris char *ret; 8255714Skris 8355714Skris /* Copy at most 2 chars of salt */ 8455714Skris if ((e_salt[0] = salt[0]) != '\0') 8555714Skris e_salt[1] = salt[1]; 8655714Skris 8755714Skris /* Copy at most 32 chars of password */ 8855714Skris strncpy (e_buf, buf, sizeof(e_buf)); 8955714Skris 9055714Skris /* Make sure we have a delimiter */ 9155714Skris e_salt[sizeof(e_salt)-1] = e_buf[sizeof(e_buf)-1] = '\0'; 9255714Skris 9355714Skris /* Convert the e_salt to ASCII, as that's what des_fcrypt works on */ 9455714Skris ebcdic2ascii(e_salt, e_salt, sizeof e_salt); 9555714Skris 9655714Skris /* Convert the cleartext password to ASCII */ 9755714Skris ebcdic2ascii(e_buf, e_buf, sizeof e_buf); 9855714Skris 9955714Skris /* Encrypt it (from/to ASCII) */ 10055714Skris ret = des_fcrypt(e_buf,e_salt,buff); 10155714Skris 10255714Skris /* Convert the result back to EBCDIC */ 10355714Skris ascii2ebcdic(ret, ret, strlen(ret)); 10455714Skris 10555714Skris return ret; 10655714Skris#endif 10755714Skris } 10855714Skris 10955714Skris 11055714Skrischar *des_fcrypt(const char *buf, const char *salt, char *ret) 11155714Skris { 11255714Skris unsigned int i,j,x,y; 11355714Skris DES_LONG Eswap0,Eswap1; 11455714Skris DES_LONG out[2],ll; 11555714Skris des_cblock key; 11655714Skris des_key_schedule ks; 11755714Skris unsigned char bb[9]; 11855714Skris unsigned char *b=bb; 11955714Skris unsigned char c,u; 12055714Skris 12155714Skris /* eay 25/08/92 12255714Skris * If you call crypt("pwd","*") as often happens when you 12355714Skris * have * as the pwd field in /etc/passwd, the function 12455714Skris * returns *\0XXXXXXXXX 12555714Skris * The \0 makes the string look like * so the pwd "*" would 12655714Skris * crypt to "*". This was found when replacing the crypt in 12755714Skris * our shared libraries. People found that the disbled 12855714Skris * accounts effectivly had no passwd :-(. */ 12955714Skris#ifndef CHARSET_EBCDIC 13055714Skris x=ret[0]=((salt[0] == '\0')?'A':salt[0]); 13155714Skris Eswap0=con_salt[x]<<2; 13255714Skris x=ret[1]=((salt[1] == '\0')?'A':salt[1]); 13355714Skris Eswap1=con_salt[x]<<6; 13455714Skris#else 13555714Skris x=ret[0]=((salt[0] == '\0')?os_toascii['A']:salt[0]); 13655714Skris Eswap0=con_salt[x]<<2; 13755714Skris x=ret[1]=((salt[1] == '\0')?os_toascii['A']:salt[1]); 13855714Skris Eswap1=con_salt[x]<<6; 13955714Skris#endif 14055714Skris 14155714Skris/* EAY 14255714Skrisr=strlen(buf); 14355714Skrisr=(r+7)/8; 14455714Skris*/ 14555714Skris for (i=0; i<8; i++) 14655714Skris { 14755714Skris c= *(buf++); 14855714Skris if (!c) break; 14955714Skris key[i]=(c<<1); 15055714Skris } 15155714Skris for (; i<8; i++) 15255714Skris key[i]=0; 15355714Skris 15455714Skris des_set_key(&key,ks); 15555714Skris fcrypt_body(&(out[0]),ks,Eswap0,Eswap1); 15655714Skris 15755714Skris ll=out[0]; l2c(ll,b); 15855714Skris ll=out[1]; l2c(ll,b); 15955714Skris y=0; 16055714Skris u=0x80; 16155714Skris bb[8]=0; 16255714Skris for (i=2; i<13; i++) 16355714Skris { 16455714Skris c=0; 16555714Skris for (j=0; j<6; j++) 16655714Skris { 16755714Skris c<<=1; 16855714Skris if (bb[y] & u) c|=1; 16955714Skris u>>=1; 17055714Skris if (!u) 17155714Skris { 17255714Skris y++; 17355714Skris u=0x80; 17455714Skris } 17555714Skris } 17655714Skris ret[i]=cov_2char[c]; 17755714Skris } 17855714Skris ret[13]='\0'; 17955714Skris return(ret); 18055714Skris } 18155714Skris 182