May 26, 2018

Low-level ctypes wrapper for Ed25519 digital signatures

ed25519ll is a low-level wrapper for the Ed25519 public key signature system. It uses Extension to compile a shared library that is not a Python extension module, and then uses ctypes to talk to the library. With luck it will only be necessary to compile ed25519ll once for each platform, reusing its shared library across Python versions.

This wrapper also contains a reasonably performat pure-Python fallback. Unlike the reference implementation, the Python implementation does not contain protection against timing attacks.

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