We are excited to let you know that we have updated the hashing function in Tutanota to Argon2 - the most secure algorithm. This is the first step on our road of becoming a post-quantum secure email provider as this hashing function can generate much larger encryption keys used to secure your Tutanota emails, calendars and contacts.

#CoSoSec

https://tutanota.com/blog/best-encryption-with-kdf