[Cryptography] PQ Crypto: new hash-bases signature schemes

[Jota J]

I've been working on some new (hash-based) post-quantum signature schemes:

# Unbalanced Winternitz Signatures
Abstract: We introduce 'uwots' (unbalanced Winternitz one-time signatures):
an optimized, tweakable generalization of the Winternitz signature scheme.

# Integer Composition Signatures
Abstract: We introduce integer composition signatures (ic): a hash-based
family of one-time signatures. The family shows improvements over previous
schemes like Winternitz: less costly/shorter signatures, verification in
constant time, and tweakable parameters allowing optimization for either
signing/verifying.

A python inplementation of the scheme is also available.
# uwots, icvar, ic - v4.zip
sha256: 754a600b4cef06d5c773440eb9ed1bc0e3ce208827399703ededd833a141a0fc

The papers and code can be found at:
http://jotasapiens.com/

Santi J.
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