Enc/Dec Use Cases and Architectural choices

[bumblefudge]

Working in the open to solidify scope of the CAIP for enc/dec APIs

[coryhardman]

One general bit of advice is that with wallets we have really strong identity proofs. So rather than attempting to reuse the key material for enc/dec we should generate session keys for enc/dec situations using protocols like diffie-hellman key exchanges.

Potentially some use cases to consider:

• Peer to peer messaging or data transfer using wallet identities
• Broadcast messaging to select identities 1 to many or many to many

The key thing is that your wallet acts as your identity in key establishment.

One great feature we get if we go a key establishment protocol: if you lose control of your wallet your previous messages are not compromised. Aka: forward secrecy