os/ossrv/ssl/libcrypto/src/crypto/des/fcrypt.c
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib.
     1 /* NOCW */
     2 /*
     3  © Portions copyright (c) 2006 Nokia Corporation.  All rights reserved.
     4  */
     5 #include <stdio.h>
     6 #ifdef _OSD_POSIX
     7 #ifndef CHARSET_EBCDIC
     8 #define CHARSET_EBCDIC 1
     9 #endif
    10 #endif
    11 #ifdef CHARSET_EBCDIC
    12 #include <openssl/ebcdic.h>
    13 #endif
    14 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
    15 #include "libcrypto_wsd_macros.h"
    16 #include "libcrypto_wsd.h"
    17 #endif
    18 
    19 /* This version of crypt has been developed from my MIT compatible
    20  * DES library.
    21  * Eric Young (eay@cryptsoft.com)
    22  */
    23 
    24 /* Modification by Jens Kupferschmidt (Cu)
    25  * I have included directive PARA for shared memory computers.
    26  * I have included a directive LONGCRYPT to using this routine to cipher
    27  * passwords with more then 8 bytes like HP-UX 10.x it used. The MAXPLEN
    28  * definition is the maximum of length of password and can changed. I have
    29  * defined 24.
    30  */
    31 
    32 #include "des_locl.h"
    33 
    34 /* Added more values to handle illegal salt values the way normal
    35  * crypt() implementations do.  The patch was sent by 
    36  * Bjorn Gronvall <bg@sics.se>
    37  */
    38 static unsigned const char con_salt[128]={
    39 0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,
    40 0xDA,0xDB,0xDC,0xDD,0xDE,0xDF,0xE0,0xE1,
    41 0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,
    42 0xEA,0xEB,0xEC,0xED,0xEE,0xEF,0xF0,0xF1,
    43 0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,
    44 0xFA,0xFB,0xFC,0xFD,0xFE,0xFF,0x00,0x01,
    45 0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
    46 0x0A,0x0B,0x05,0x06,0x07,0x08,0x09,0x0A,
    47 0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12,
    48 0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,
    49 0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22,
    50 0x23,0x24,0x25,0x20,0x21,0x22,0x23,0x24,
    51 0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,
    52 0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,
    53 0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,
    54 0x3D,0x3E,0x3F,0x40,0x41,0x42,0x43,0x44,
    55 };
    56 
    57 static unsigned const char cov_2char[64]={
    58 0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,
    59 0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44,
    60 0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,
    61 0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54,
    62 0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62,
    63 0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,
    64 0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,
    65 0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A
    66 };
    67 
    68 #ifdef EMULATOR	
    69 GET_STATIC_ARRAY_FROM_TLS(buff,fcrypt,char)
    70 #define buff (GET_WSD_VAR_NAME(buff,fcrypt, s)())
    71 #endif
    72 
    73 EXPORT_C char *DES_crypt(const char *buf, const char *salt)
    74 	{
    75 #ifndef EMULATOR	
    76 	static char buff[14];
    77 #endif
    78 
    79 #ifndef CHARSET_EBCDIC
    80 	return(DES_fcrypt(buf,salt,buff));
    81 #else
    82 	char e_salt[2+1];
    83 	char e_buf[32+1];	/* replace 32 by 8 ? */
    84 	char *ret;
    85 
    86 	/* Copy at most 2 chars of salt */
    87 	if ((e_salt[0] = salt[0]) != '\0')
    88 	    e_salt[1] = salt[1];
    89 
    90 	/* Copy at most 32 chars of password */
    91 	strncpy (e_buf, buf, sizeof(e_buf));
    92 
    93 	/* Make sure we have a delimiter */
    94 	e_salt[sizeof(e_salt)-1] = e_buf[sizeof(e_buf)-1] = '\0';
    95 
    96 	/* Convert the e_salt to ASCII, as that's what DES_fcrypt works on */
    97 	ebcdic2ascii(e_salt, e_salt, sizeof e_salt);
    98 
    99 	/* Convert the cleartext password to ASCII */
   100 	ebcdic2ascii(e_buf, e_buf, sizeof e_buf);
   101 
   102 	/* Encrypt it (from/to ASCII) */
   103 	ret = DES_fcrypt(e_buf,e_salt,buff);
   104 
   105 	/* Convert the result back to EBCDIC */
   106 	ascii2ebcdic(ret, ret, strlen(ret));
   107 	
   108 	return ret;
   109 #endif
   110 	}
   111 
   112 
   113 EXPORT_C char *DES_fcrypt(const char *buf, const char *salt, char *ret)
   114 	{
   115 	unsigned int i,j,x,y;
   116 	DES_LONG Eswap0,Eswap1;
   117 	DES_LONG out[2],ll;
   118 	DES_cblock key;
   119 	DES_key_schedule ks;
   120 	unsigned char bb[9];
   121 	unsigned char *b=bb;
   122 	unsigned char c,u;
   123 
   124 	/* eay 25/08/92
   125 	 * If you call crypt("pwd","*") as often happens when you
   126 	 * have * as the pwd field in /etc/passwd, the function
   127 	 * returns *\0XXXXXXXXX
   128 	 * The \0 makes the string look like * so the pwd "*" would
   129 	 * crypt to "*".  This was found when replacing the crypt in
   130 	 * our shared libraries.  People found that the disabled
   131 	 * accounts effectively had no passwd :-(. */
   132 #ifndef CHARSET_EBCDIC
   133 	x=ret[0]=((salt[0] == '\0')?'A':salt[0]);
   134 	Eswap0=con_salt[x]<<2;
   135 	x=ret[1]=((salt[1] == '\0')?'A':salt[1]);
   136 	Eswap1=con_salt[x]<<6;
   137 #else
   138 	x=ret[0]=((salt[0] == '\0')?os_toascii['A']:salt[0]);
   139 	Eswap0=con_salt[x]<<2;
   140 	x=ret[1]=((salt[1] == '\0')?os_toascii['A']:salt[1]);
   141 	Eswap1=con_salt[x]<<6;
   142 #endif
   143 
   144 /* EAY
   145 r=strlen(buf);
   146 r=(r+7)/8;
   147 */
   148 	for (i=0; i<8; i++)
   149 		{
   150 		c= *(buf++);
   151 		if (!c) break;
   152 		key[i]=(c<<1);
   153 		}
   154 	for (; i<8; i++)
   155 		key[i]=0;
   156 
   157 	DES_set_key_unchecked(&key,&ks);
   158 	fcrypt_body(&(out[0]),&ks,Eswap0,Eswap1);
   159 
   160 	ll=out[0]; l2c(ll,b);
   161 	ll=out[1]; l2c(ll,b);
   162 	y=0;
   163 	u=0x80;
   164 	bb[8]=0;
   165 	for (i=2; i<13; i++)
   166 		{
   167 		c=0;
   168 		for (j=0; j<6; j++)
   169 			{
   170 			c<<=1;
   171 			if (bb[y] & u) c|=1;
   172 			u>>=1;
   173 			if (!u)
   174 				{
   175 				y++;
   176 				u=0x80;
   177 				}
   178 			}
   179 		ret[i]=cov_2char[c];
   180 		}
   181 	ret[13]='\0';
   182 	return(ret);
   183 	}
   184