Support for argon2?

[fkromer]

Would it be possible to add argon2 (argon2id) as algorithm?

[ikerexxe]

I'm not a cryptography expert, but implementing argon2 here has some significant hurdles.

Currently, most modern Linux distributions (like Fedora and Debian) have moved to yescrypt as the default hashing algorithm. It provides high-grade, memory-hard security similar to argon2.

More importantly, there is a core technical dependency: Linux-PAM does not yet support argon2 for standard system authentication (see linux-pam/linux-pam#45). Until this is merged and available in distributions, adding support to this project may be premature.

[fkromer]

This limitation relates to why I opened #1550 actually (as a fallback related to the use case mentioned in there).