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No. age developer Filippo Valsorda has experimented with Kyber/ML-KEM and maintains a Go library for it, https://github.com/FiloSottile/mlkem768. The public key size is intimidating.

https://x.com/FiloSottile/status/1544803635237998592 (2022-07-06):

> A Kʏʙᴇʀ768+X25519 recipient would clock in at about 1660 characters.

> Classic X25519 age recipient for scale.

> https://paste.dbohdan.com/1mhc0nc-w7ks3/recipient.png [Alt text: A terminal window. The classic recipient on the first line takes about 2/3 of a line. The PQC one takes 16 lines.]



Oh, that's a shame.

I'd like to use something stable and supported for long term backups, so size doesn't matter. Pre-quantum is not something worth migrating to.




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