Пример #1
0
char *DES_fcrypt(const char *buf, const char *salt, char *ret)
{
    unsigned int i, j, x, y;
    DES_LONG Eswap0, Eswap1;
    DES_LONG out[2], ll;
    DES_cblock key;
    DES_key_schedule ks;
    unsigned char bb[9];
    unsigned char *b = bb;
    unsigned char c, u;

    x = ret[0] = salt[0];
    if (x == 0 || x >= sizeof(con_salt))
        return NULL;
    Eswap0 = con_salt[x] << 2;
    x = ret[1] = salt[1];
    if (x == 0 || x >= sizeof(con_salt))
        return NULL;
    Eswap1 = con_salt[x] << 6;

    /*
     * EAY r=strlen(buf); r=(r+7)/8;
     */
    for (i = 0; i < 8; i++) {
        c = *(buf++);
        if (!c)
            break;
        key[i] = (c << 1);
    }
    for (; i < 8; i++)
        key[i] = 0;

    DES_set_key_unchecked(&key, &ks);
    fcrypt_body(&(out[0]), &ks, Eswap0, Eswap1);

    ll = out[0];
    l2c(ll, b);
    ll = out[1];
    l2c(ll, b);
    y = 0;
    u = 0x80;
    bb[8] = 0;
    for (i = 2; i < 13; i++) {
        c = 0;
        for (j = 0; j < 6; j++) {
            c <<= 1;
            if (bb[y] & u)
                c |= 1;
            u >>= 1;
            if (!u) {
                y++;
                u = 0x80;
            }
        }
        ret[i] = cov_2char[c];
    }
    ret[13] = '\0';
    return ret;
}
Пример #2
0
EXPORT_C char *DES_fcrypt(const char *buf, const char *salt, char *ret)
	{
	unsigned int i,j,x,y;
	DES_LONG Eswap0,Eswap1;
	DES_LONG out[2],ll;
	DES_cblock key;
	DES_key_schedule ks;
	unsigned char bb[9];
	unsigned char *b=bb;
	unsigned char c,u;

	/* eay 25/08/92
	 * If you call crypt("pwd","*") as often happens when you
	 * have * as the pwd field in /etc/passwd, the function
	 * returns *\0XXXXXXXXX
	 * The \0 makes the string look like * so the pwd "*" would
	 * crypt to "*".  This was found when replacing the crypt in
	 * our shared libraries.  People found that the disabled
	 * accounts effectively had no passwd :-(. */
#ifndef CHARSET_EBCDIC
	x=ret[0]=((salt[0] == '\0')?'A':salt[0]);
	Eswap0=con_salt[x]<<2;
	x=ret[1]=((salt[1] == '\0')?'A':salt[1]);
	Eswap1=con_salt[x]<<6;
#else
	x=ret[0]=((salt[0] == '\0')?os_toascii['A']:salt[0]);
	Eswap0=con_salt[x]<<2;
	x=ret[1]=((salt[1] == '\0')?os_toascii['A']:salt[1]);
	Eswap1=con_salt[x]<<6;
#endif

/* EAY
r=strlen(buf);
r=(r+7)/8;
*/
	for (i=0; i<8; i++)
		{
		c= *(buf++);
		if (!c) break;
		key[i]=(c<<1);
		}
	for (; i<8; i++)
		key[i]=0;

	DES_set_key_unchecked(&key,&ks);
	fcrypt_body(&(out[0]),&ks,Eswap0,Eswap1);

	ll=out[0]; l2c(ll,b);
	ll=out[1]; l2c(ll,b);
	y=0;
	u=0x80;
	bb[8]=0;
	for (i=2; i<13; i++)
		{
		c=0;
		for (j=0; j<6; j++)
			{
			c<<=1;
			if (bb[y] & u) c|=1;
			u>>=1;
			if (!u)
				{
				y++;
				u=0x80;
				}
			}
		ret[i]=cov_2char[c];
		}
	ret[13]='\0';
	return(ret);
	}