https://github.com/leastauthority/haskell-spake2

SPAKE2 key exchange protocol for Haskell
https://github.com/leastauthority/haskell-spake2

crypto haskell spake2

Last synced: 6 months ago
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SPAKE2 key exchange protocol for Haskell

• Host: GitHub
• URL: https://github.com/leastauthority/haskell-spake2
• Owner: LeastAuthority
• License: apache-2.0
• Created: 2017-05-13T14:55:41.000Z (over 8 years ago)
• Default Branch: main
• Last Pushed: 2023-05-24T19:08:02.000Z (over 2 years ago)
• Last Synced: 2025-04-17T01:10:06.516Z (6 months ago)
• Topics: crypto, haskell, spake2
• Language: Haskell
• Homepage:
• Size: 153 KB
• Stars: 14
• Watchers: 8
• Forks: 4
• Open Issues: 8
• Metadata Files:
  • Readme: README.rst
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

          
=============================

Haskell SPAKE2 implementation

=============================

Implementation of SPAKE2 key exchange protocol.

Status

======

Working implementation that interoperates with python-spake2

using the default settings, i.e. with Ed25519.

No other groups implemented.

Goals

=====

* compatibility with `python-spake2 `_

* (stretch) submit to `cryptonite `_

Non-goals

=========

Right now:

* PAKE2+

* any `Elligator Edition `_ variants

How to use it

=============

The `interoperability harness entry point `_

is the best working example of how to use the code.

The `main module documentation `_ might also help.

Testing for interoperability

----------------------------

Requires the `LeastAuthority interoperability harness `_.

Assumes that haskell-spake2 has been compiled (``stack build`` will do it)

and that you know where the executable lives (``stack install`` might be helpful here).

.. these instructions are not yet verified

To show that Python works as Side A and Haskell works as Side B:

.. code-block:: console

   $ runhaskell TestInterop.hs ./python-spake2-interop-entrypoint.hs A abc -- /path/to/haskell-spake2-interop-entrypoint B abc

   ["./python-spake2-interop-entrypoint.py","A","abc"]

   ["/path/to/haskell-spake2-interop-entrypoint","B","abc"]

   A's key: 8a2e19664f0a2bc6e446d2c44900c67604fe42f6d7e0a1328a5253b21f4131a5

   B's key: 8a2e19664f0a2bc6e446d2c44900c67604fe42f6d7e0a1328a5253b21f4131a5

   Session keys match.

**Note**: if you want to run ``runhaskell`` with ``stack``,

you will need to invoke it like::

   stack runhaskell TestInterop.hs -- ./python-spake2-interop-entrypoint.hs A abc -- /path/to/haskell-spake2-interop-entrypoint B abc

The above results are genuine,

and demonstrate that the Haskell SPAKE2 implementation *does* work.

Specifically, that it interoperates with python-spake2.

Contributing

============

We use `stack `_ for building and testing.

High-quality documentation with examples is very strongly encouraged,

because this stuff is pretty hard to figure out, and we need all the help we can get.