derivepassphrase.git

1) # derivepassphrase
2) 
3) [![PyPI - Version](https://img.shields.io/pypi/v/derivepassphrase.svg)](https://pypi.org/project/derivepassphrase)
4) [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/derivepassphrase.svg)](https://pypi.org/project/derivepassphrase)
5) 

6) An almost faithful Python reimplementation of [James Coglan's `vault`][VAULT], a deterministic password manager/generator.
7) 
8) Using a master passphrase or a master SSH key, derive a passphrase for a given named service, subject to length, character and character repetition constraints.
9) The derivation is cryptographically strong, meaning that even if a single passphrase is compromised, guessing the master passphrase or a different service's passphrase is computationally infeasible.
10) The derivation is also deterministic, given the same inputs, thus the resulting passphrase need not be stored explicitly.
11) The service name and constraints themselves also need not be kept secret; the latter are usually stored in a world-readable file.

12) 

13) [VAULT]: https://getvau.lt

14) 

15) -----

16) 
17) ## Installation
18) 

19) ### With `pip`
20) 

21) ```` shell-session

22) $ pip install derivepassphrase

23) ````

24) 
25) ### Manually
26) 

27) `derivepassphrase` is a pure Python package, and may be easily installed manually by placing the respective files and the package's dependencies into Python's import path.
28) `derivepassphrase` requires Python 3.10 or higher as well as the [typing-extensions package][TYPING_EXTENSIONS] for its core functionality and programmatic interface, and [`click`][CLICK] 8.1 or higher for its command-line interface.

29) Using the `export vault` subcommand additionally requires the [cryptography package][CRYPTOGRAPHY], version 38.0 or newer.

30) 

31) [TYPING_EXTENSIONS]: https://pypi.org/project/typing-extensions/

32) [CLICK]: https://click.palletsprojects.com/

33) [CRYPTOGRAPHY]: https://github.com/pyca/cryptography

34) 
35) ## Quick Usage
36) 

37) ```` shell-session

38) $ derivepassphrase vault -p --length 30 --upper 3 --lower 1 --number 2 --space 0 --symbol 0 my-email-account

39) Passphrase: This passphrase is for demonstration purposes only.
40) JKeet7GeBpxysOgdCEJo6UzmP8A0Ih

41) ````

42) 
43) Some time later…
44) 

45) ```` shell-session

46) $ derivepassphrase vault -p --length 30 --upper 3 --lower 1 --number 2 --space 0 --symbol 0 my-email-account

47) Passphrase: This passphrase is for demonstration purposes only.
48) JKeet7GeBpxysOgdCEJo6UzmP8A0Ih

49) ````

50) 

51) (The user input `This passphrase is for demonstration purposes only.` for the passphrase prompt is not actually displayed on-screen.)
52)