Improper handling of extra padding in encrypted dm messaging

[WesVleuten]

Extra padding in encrypted dm messages can be used to hide message length in the public cipher text. The go-nostr library, at time of writing, adds extra padding by default which Damus is unable to decrypt. Failing with a "failed to decrypt content" message.

Extra padding should just be ignored.

Would this be possible in Damus?

[alltheseas]

Adding link to NIP-04 Encrypted Direct Message

https://github.com/nostr-protocol/nips/blob/master/04.md