How secured is it to be reused multiple times?

[ibudisteanu]

Hi! Amazing work. Simple and great! My question is how many times can a keypair (publickey, privatekey) can be reused to encrypt/decrypt data. Does it require only once, or can it be reused multiple times? Thanks

[libertylocked]

It can be used more than once because every encrypted message uses a new ephemeral key. There may be a limit when the 256 bit ephem key is reused, using birthday paradox it'll be approximately sqrt(2^256) messages for 50% chance of collision.