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50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/* Encrypting Passwords
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Copyright (C) 1991-2016 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <time.h>
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#include <unistd.h>
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#include <crypt.h>
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int
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main(void)
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{
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unsigned long seed[2];
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char salt[] = "$1$........";
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const char *const seedchars =
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"./0123456789ABCDEFGHIJKLMNOPQRST"
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"UVWXYZabcdefghijklmnopqrstuvwxyz";
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char *password;
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int i;
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/* Generate a (not very) random seed.
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You should do it better than this... */
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seed[0] = time(NULL);
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seed[1] = getpid() ^ (seed[0] >> 14 & 0x30000);
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/* Turn it into printable characters from `seedchars'. */
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for (i = 0; i < 8; i++)
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salt[3+i] = seedchars[(seed[i/5] >> (i%5)*6) & 0x3f];
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/* Read in the user's password and encrypt it. */
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password = crypt(getpass("Password:"), salt);
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/* Print the results. */
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puts(password);
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return 0;
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}
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