pwdpy

pwdpy is a set of tools to facilitate password handling. It can be used in command line and as a python module.

Installation

pwdpy requires Python 3.x.

pwdpy can be installed with pip:

$ pip install pwdpy

Usage (command line)

pwdpy accepts several arguments configuring its outcome. Overall synopsis is:

$ pwdpy {generate, entropy, strengthen} [-h]

$ pwdpy generate [-h] [-l LENGTH] [-q QUANTITY] [-p] [-d] [-le] [-nu] [-nl] [-cf FILE] [-o FILE]

$ pwdpy entropy [-h] [-pwd PASSWORD]

$ pwdpy strengthen [-h] [-pwd PASSWORD] [-shf] [-inc] [-mp MAX_PREFIX] [-ms MAX_SUFIX]

$ pwdpy generate_wordlist [-h] [-q QUANTITY] [-l LENGTH] [-lg LANGUAGE] [-sep SEP] [-u] [-wl WORDLIST]

Commands: generate Generates a random password based on the arguments

**entropy**       Calculate the entropy of a password

**strengthen**    Strengthen your password

**generate_wordlist**    Generates a random wordlist

ALL Arguments:

-h, --help Display help message

-l, --length LENGTH The length of the password (default: 8)

-q, --quantity QUANTITY Generate QUANTITY passwords. (default: 1)

-sc, --special_characters Use special characters (default: False)

-d, --digits Use digits (default: False)

-le, --letters Use letter (default: False)

-nu, --no-upper Don't use upper case letters (default: False)

-nl, --no-lower Don't use lower case letters (default: False)

-cf, --charset-file FILE Charset file will be used instead of the arguments specification

-o FILE, --output FILE The output file will be created with the passwords.

ENTROPY Arguments:

-pwd, --password PASSWORD password that will be tested

STRENGTHEN Arguments:

-pwd, --password PASSWORD password that will be strengthened

-shf, --shuffle shuffle the password after strengthened (default: False)

-inc, --increase increase the number of characters in the password (default: False)

-mp, --max_prefix MAX_PREFIX max number of characters to add as prefix (default: 5) can only be used with --increase

-ms, --max_sufix MAX_SUFIX max number of characters to add as sufix (default: 5) can only be used with --increase

GENERATE WORDLIST Arguments:

-q QUANTITY, --quantity QUANTITY quantity of passwords to generate (default: 1)

-l LENGTH, --length LENGTH the length of the password (default: 8)

-lg LANGUAGE, --language LANGUAGE language of the words (default: english)

-sep SEP, --separator SEP word separation (default: space)

-u, --upper
use upper case words (default: False)

-wl WORDLIST, --wordlist WORDLIST path to to the wordlist file (default: None)

Examples

Below are some examples of pwdpy usage.

GENERATE:

One password with letters and digits:

$ pwdpy generate -le -d 
    MT06aRK1

One password with 12 digits:

$ pwdpy generate -l 12 -d
    304751766483

One password with all characters possibility:

$ pwdpy generate -le -d -p
    PY>8OH+y

A list containing 3 passwords with all characters possibility:

$ pwdpy generate -q 3 -le -d -p
    ['Xw]6ua77', 'SfmCrlg)', 'I9):o8Oa']

One password with all characters possibility from the charset file:

$ pwdpy generate -cf ./wordlist.txt
    }=W8jb4y

ENTROPY:

Calculing one password entropy:

$ pwdpy entropy -pwd "PY>8OH+y"
    52.44

$ pwdpy entropy -pwd "Isaac"
    28.5

STRENGTHEN:

Strengthen one password:

$ pwdpy strengthen -pwd "Isaac"
    15Á4C

$ pwdpy strengthen -pwd "Isaac" -inc
    <uQ0@îsá4c~

Strengthened and using shuffle

$ pwdpy strengthen -pwd "Python" -shf
    ý%IÕqN

GENERATE WORDLIST:

Generate one wordlist with 13 words:

$ pwdpy generate_wordlist -l 13
    dollhood obligatum weirded triangularly meanness uncrediting ologies pomological refixture accessible clapperclaws winzeman montesinos

Generate one wordlist with portuguese upper words:

$ generate_wordlist -lg portuguese -u
    ANDRÔMEDA CUCURBITÁCEO ISOAMÍLICO APLACÁVEL ARQUEÔMETRO GERVAIS CRUSTACÍTICO EUGLIPTO

Python module

pwdpy Python module provides one function that is called generate.

| generate(quantity=1, length=12, special_characters=True, digits=True, letters=True, l_upper=True, l_lower=True, charset=[], charset_file="",output_file="", **kwargs) -> str or list

It returns a string with *length* characters. *special_characters*, *digits*
and *letters* arguments specify whether special characters, digits and letters
should be used. *l_upper* and *l_lower* specifies letter wich case the letter can be.

A list of charsets can be passed, instead of using the default it will uses the parameter.

You can configure an output using *charset_file*, that file will be
created or replaced with the generated passwords

| entropy(password: str) -> float

It returns a float of bits that was the result of applying the Shannon formula.

| strengthen(password: str, shuffle=False, increase=True, max_prefix=5, max_sufix=5) -> str

It returns a string the strengthen password,
can be added a prefix and/or sufix by using *max_prefix* and *max_sufix*
and the password can be shuffle using *shuffle*.

| generate_wordlist(quantity=1, length=8, language="english", sep=" ", case="lower", wordlist: str = None) -> str orlist

It returns a string with *length* of words.
The words are select by *language* and separeted by *sep*.
Define case of the words using *case*.
Or you can pass your own wordlist using *wordlist*.

License

MIT License