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cloudflare / circl

CIRCL: Cloudflare Interoperable Reusable Cryptographic Library
http://blog.cloudflare.com/introducing-circl
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Add Ascon-80pq to cipher\ascon #404

Closed dhcgn closed 1 year ago

dhcgn commented 1 year ago

Since this repo has a focus on PQ, I would like to suggest including the PQ optimized variant of Ascon.

Ascon-80pq has an increased key-size to provide more resistance against a quantum adversary using Grover’s algorithm for key search. Since Ascon-128 and Ascon- 80pq share the same building blocks and same parameters except the size of the key, we claim the same security for Ascon-80pq against classical attacks as for Ascon-128. [...] The only difference between Ascon-80pq and Ascon-128 is the increased length of the key. This increased key length provides additional protection against exhaustive key search in the case the availability of quantum computers becomes evident. Since the other tunable security parameters (the number of rounds of the permutations) have not been increased, the security claim for Ascon-80pq against classical attacks stays the same as for Ascon-128.

Source: https://ascon.iaik.tugraz.at/files/asconv12-nist.pdf

armfazh commented 1 year ago

Could you please squash the commits, so we can merge it.

armfazh commented 1 year ago

I just generated the test vectors file for Ascon80pq using pyascon.

https://github.com/meichlseder/pyascon

The ciphertext do not matches with the test vector in Go. Could you please confirm it.