Standard Notes Updated Their Cryptography
These updates are palpable upgrades to the application itself.
Now they employ Argon2 for the password hashing and XChacha20-Poly1305 for the creation of the nonce (changes for each note that is saved by a user).
That's not to say that the cryptographic primitives that they were using before were weak, but these are obviously considerably stronger (and cryptographically more secure as well).
In many cases it is also estimated that Chacha20-poly1305 is faster than AES256-GCM on hardware (and software as well).
196-bit nonces are used for the chacha20 stream cipher encryption.
More information on the specification for this upgrade / update can be found here = https://docs.standardnotes.org/specification/encryption/
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