Farcaster

Farcaster could end up becoming the solution to Public Key Infrastructure (PKI).

To send something encrypted to someone you have to somehow agree on how they will decrypt it.

Otherwise it’s pointless.

Either you both have a common secret or you use something you know only they can decrypt.

For the common secret how do you exchange it? Well you use a secure channel. But how do you establish that ? 

Enter using something only they can decrypt. No need to first establish a secure channel for secret exchange. But how to learn what only they can decrypt?

In todays systems these are called public keys. That public key is a seal for your envelope with the message. The seal you know only they can open.

But how to get the seal?

Usually that’s either by a centralized registry (SSL certificates aka the whole internet, companies infrastructure) or by you recieving that key somehow. But how do you know it hasn’t been tampered with?

Well well …
1/2