Password-List-Generator

Generates all possible password permutations.

Runs in a unix like environment.

Options

• Print help menu (-h)

• Generate passwords from length 1 to the specified length (-a); Overrides -L

• Calculate only estimated file size (-g)

• Do not output time statistics (-q)

• Choose maximum password length (-l ) (DEFAULT: 8)

• Choose minimum password length (-L )

• Choose character set (-c )

• Character set options (DEFAULT: Num):

  • u (Upper case)
  • l (Lower case)
  • p (Alpha)
  • a (Alnum)
  • w (Num + Lower)
  • e (Num + Upper)
  • s (Num + Upper + Lower + Symbol)

• Choose a file to write to (-f[filename])

Calculation

The math involved to determine how many total permutations or the total amount of bytes used can be described by the following two expressions.

Let n be maximum password length. Let C be character set.

Total fixed length permutations:

Total fixed length bytes:

Total multilength permutations:

Total multilength bytes:

Limitations

1. The main limitation is time. Due to the exorbitant amount of possible passwords for even an 8 character english alphanumeric w/ symbols creating said password list will likely take a few years to complete.

2. A more minor limitation is memory. An 8 character password list only using numbers as a choice set generates about a 858MB file, as a result password lists can become very large.

List generation optimization

Given that I/O operations, writing to persistent memory, is the slowest operations performed on a computing device decreasing the I/O operation time will drastically increase password generation speed. In other words, a hard drive with faster write speeds will make password list generation faster.

Contribution

Anyone can contribute and work on any available issues.

Keep the same format as is used. After, simply make a pull request and have patience.