Python LibreAuth
================

Python bindings to the LibreAuth library.
LibreAuth is a collection of tools for user authentication written in Rust.


Features
--------

This is a work in progress. Some features may not be available.

* Password / passphrase authentication

  - ✓ no character-set limitation
  - ✓ reasonable lenth limit ([security vs. DOS](http://arstechnica.com/security/2013/09/long-passwords-are-good-but-too-much-length-can-be-bad-for-security/))
  - ✓ strong, evolutive and retro-compatible password hashing functions
  - ✓ optional NIST Special Publication 800-63B compatibility

* HOTP - HMAC-based One-time Password Algorithm ([OATH](http://www.openauthentication.org/) - [RFC 4226](https://tools.ietf.org/html/rfc4226))

  - ✗ the key can be passed as bytes, an ASCII string, an hexadicimal string or a base32 string
  - ✗ customizable counter
  - ✗ customizable hash function (sha1, sha256, sha512)
  - ✗ customizable output length
  - ✗ customizable output alphabet

* TOTP - Time-based One-time Password Algorithm ([OATH](http://www.openauthentication.org/) - [RFC 6238](https://tools.ietf.org/html/rfc6238))

  - ✗ the key can be passed as bytes, an ASCII string, an hexadicimal string or a base32 string
  - ✗ customizable timestamp
  - ✗ customizable period
  - ✗ customizable initial time (T0)
  - ✗ customizable hash function (sha1, sha256, sha512)
  - ✗ customizable output length
  - ✗ customizable output alphabet
  - ✗ customizable positive and negative period tolerance


Requirements
------------

LibreAuth 0.6 or higher.