New NIP: Nostr BLE Signing Device Protocol

[cr0bar]

This PR is to introduce support for signing and encryption/decryption on hardware based Nostr Signing Devices over BLE.

[cr0bar]

View NIP

[staab]

This is cool, but I'm not sure what all the key management methods are for. Usually it's the responsibility of the signer to provide an interface for this, although there has been talk of a hook in NIP 07 to notify clients of when the account has changed. I would also try to use the same method names as exist in 07/55/46 when possible.

[cr0bar]

@staab the idea behind this was to allow a client to switch between and manage public keys held on the device, however, I see your point. In reality the only commands that need to be exposed to the client over BLE are:

• /public-key
• /sign-message
• /encrypt-message-nipXX
• /decrypt-message-nipXX
• /ping

I'll review and reflect on the other NIPs you mentioned.

[vitorpamplona]

As a Bluetooth dev for 5 years, I am a big fan of this.

We can have earplugs that read the permission and sign for you.

[cr0bar]

Implemented in the following:

LNbits NSD: lnbits/nostr-signing-device#21
NSD Config Tool (for iOS): https://apps.apple.com/us/app/nsd-config-tool/id6741039097