Password or PIN protection for opening app (local data encryption)

[Minim]

I am no crypto expert, but is AES-GCM not post-quantum?

True identity key rotation seems somewhat important in the long term

I’m no expert here, but I’m not sure Deltachat uses RSA. “The default OpenPGP symmetric-key algorithm in Delta Chat is AES-128.” -https://eprint.iacr.org/2024/918.pdf “The good news is that symmetric ciphers, such as AES-GCM, are already post-quantum secure.” -The state of the post-quantum Internet (AES-128 is AES-GCM with a 128-bit secret key)