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      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 /* This version of crypt has been developed from my MIT compatible
     13  * DES library.
     14  * Eric Young (eay (at) cryptsoft.com)
     15  */
     16 
     17 /* Modification by Jens Kupferschmidt (Cu)
     18  * I have included directive PARA for shared memory computers.
     19  * I have included a directive LONGCRYPT to using this routine to cipher
     20  * passwords with more then 8 bytes like HP-UX 10.x it used. The MAXPLEN
     21  * definition is the maximum of length of password and can changed. I have
     22  * defined 24.
     23  */
     24 
     25 #include "des_locl.h"
     26 
     27 /* Added more values to handle illegal salt values the way normal
     28  * crypt() implementations do.  The patch was sent by
     29  * Bjorn Gronvall <bg (at) sics.se>
     30  */
     31 static 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 
     50 static 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 
     61 char *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 
     98 
     99 char *DES_fcrypt(const char *buf, const char *salt, char *ret)
    100 	{
    101 	unsigned int i,j,x,y;
    102 	DES_LONG Eswap0,Eswap1;
    103 	DES_LONG out[2],ll;
    104 	DES_cblock key;
    105 	DES_key_schedule ks;
    106 	unsigned char bb[9];
    107 	unsigned char *b=bb;
    108 	unsigned char c,u;
    109 
    110 	/* eay 25/08/92
    111 	 * If you call crypt("pwd","*") as often happens when you
    112 	 * have * as the pwd field in /etc/passwd, the function
    113 	 * returns *\0XXXXXXXXX
    114 	 * The \0 makes the string look like * so the pwd "*" would
    115 	 * crypt to "*".  This was found when replacing the crypt in
    116 	 * our shared libraries.  People found that the disabled
    117 	 * accounts effectively had no passwd :-(. */
    118 #ifndef CHARSET_EBCDIC
    119 	x=ret[0]=((salt[0] == '\0')?'A':salt[0]);
    120 	Eswap0=con_salt[x]<<2;
    121 	x=ret[1]=((salt[1] == '\0')?'A':salt[1]);
    122 	Eswap1=con_salt[x]<<6;
    123 #else
    124 	x=ret[0]=((salt[0] == '\0')?os_toascii['A']:salt[0]);
    125 	Eswap0=con_salt[x]<<2;
    126 	x=ret[1]=((salt[1] == '\0')?os_toascii['A']:salt[1]);
    127 	Eswap1=con_salt[x]<<6;
    128 #endif
    129 
    130 /* EAY
    131 r=strlen(buf);
    132 r=(r+7)/8;
    133 */
    134 	for (i=0; i<8; i++)
    135 		{
    136 		c= *(buf++);
    137 		if (!c) break;
    138 		key[i]=(c<<1);
    139 		}
    140 	for (; i<8; i++)
    141 		key[i]=0;
    142 
    143 	DES_set_key_unchecked(&key,&ks);
    144 	fcrypt_body(&(out[0]),&ks,Eswap0,Eswap1);
    145 
    146 	ll=out[0]; l2c(ll,b);
    147 	ll=out[1]; l2c(ll,b);
    148 	y=0;
    149 	u=0x80;
    150 	bb[8]=0;
    151 	for (i=2; i<13; i++)
    152 		{
    153 		c=0;
    154 		for (j=0; j<6; j++)
    155 			{
    156 			c<<=1;
    157 			if (bb[y] & u) c|=1;
    158 			u>>=1;
    159 			if (!u)
    160 				{
    161 				y++;
    162 				u=0x80;
    163 				}
    164 			}
    165 		ret[i]=cov_2char[c];
    166 		}
    167 	ret[13]='\0';
    168 	return(ret);
    169 	}
    170 
    171