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Diffstat (limited to 'manual/examples/genpass.c')
-rw-r--r-- | manual/examples/genpass.c | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/manual/examples/genpass.c b/manual/examples/genpass.c deleted file mode 100644 index e40efc782b..0000000000 --- a/manual/examples/genpass.c +++ /dev/null @@ -1,59 +0,0 @@ -/* Encrypting Passwords - Copyright (C) 1991-2023 Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License - as published by the Free Software Foundation; either version 2 - of the License, or (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, see <https://www.gnu.org/licenses/>. -*/ - -#include <stdio.h> -#include <unistd.h> -#include <crypt.h> - -int -main(void) -{ - unsigned char ubytes[16]; - char salt[20]; - const char *const saltchars = - "./0123456789ABCDEFGHIJKLMNOPQRST" - "UVWXYZabcdefghijklmnopqrstuvwxyz"; - char *hash; - int i; - - /* Retrieve 16 unpredictable bytes from the operating system. */ - if (getentropy (ubytes, sizeof ubytes)) - { - perror ("getentropy"); - return 1; - } - - /* Use them to fill in the salt string. */ - salt[0] = '$'; - salt[1] = '5'; /* SHA-256 */ - salt[2] = '$'; - for (i = 0; i < 16; i++) - salt[3+i] = saltchars[ubytes[i] & 0x3f]; - salt[3+i] = '\0'; - - /* Read in the user's passphrase and hash it. */ - hash = crypt (getpass ("Enter new passphrase: "), salt); - if (!hash || hash[0] == '*') - { - perror ("crypt"); - return 1; - } - - /* Print the results. */ - puts (hash); - return 0; -} |