friek · December 1, 2015 20:10 · Dec 1, 2015
diff --git a/genpass.py b/genpass.py
@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+
+import crypt
+import random
+import string
+import sys
+
+PASSWORD_CHARS = string.ascii_uppercase + string.ascii_lowercase + string.digits
+MD5_SALT_CHARS = PASSWORD_CHARS + '/'
+DES_SALT_CHARS = string.ascii_uppercase + string.ascii_lowercase
+
+def random_string(N, charset=PASSWORD_CHARS):
+   # http://stackoverflow.com/questions/2257441/random-string-generation-with-upper-case-letters-and-digits-in-python
+   return ''.join(random.choice(charset) for _ in range(N))
+
+if __name__ == '__main__':
+  pw_len = 9
+  if len(sys.argv) > 1:
+     pw_len = int(sys.argv[1])
+  password = random_string(pw_len)
+  # This only works when the libc crypt function supports it.
+  md5 = crypt.crypt(password, '$1$' + random_string(7, MD5_SALT_CHARS) + '$')
+  des = crypt.crypt(password, random_string(2, DES_SALT_CHARS))
+
+  print("Password: {0}\nMD5: {1}\nDES: {2}".format(password, md5, des))