1 files changed, 49 insertions, 0 deletions
diff --git a/REORG.TODO/manual/examples/genpass.c b/REORG.TODO/manual/examples/genpass.c
new file mode 100644
index 0000000000..7d76dedfbc
--- /dev/null
+++ b/REORG.TODO/manual/examples/genpass.c
@@ -0,0 +1,49 @@
+/* Encrypting Passwords
+   Copyright (C) 1991-2017 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, if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdio.h>
+#include <time.h>
+#include <unistd.h>
+#include <crypt.h>
+
+int
+main(void)
+{
+  unsigned long seed[2];
+  char salt[] = "$1$........";
+  const char *const seedchars =
+    "./0123456789ABCDEFGHIJKLMNOPQRST"
+    "UVWXYZabcdefghijklmnopqrstuvwxyz";
+  char *password;
+  int i;
+
+  /* Generate a (not very) random seed.
+     You should do it better than this...  */
+  seed[0] = time(NULL);
+  seed[1] = getpid() ^ (seed[0] >> 14 & 0x30000);
+
+  /* Turn it into printable characters from `seedchars'.  */
+  for (i = 0; i < 8; i++)
+    salt[3+i] = seedchars[(seed[i/5] >> (i%5)*6) & 0x3f];
+
+  /* Read in the user's password and encrypt it.  */
+  password = crypt(getpass("Password:"), salt);
+
+  /* Print the results.  */
+  puts(password);
+  return 0;
+}