Key Management

Null should separate asset keys, identity control, and communication keys where practical.

Key types

• Wallet control key — proves identity ownership and controls assets.
• Identity key — authorizes Null ID changes.
• Messaging key — encrypts and signs communications.
• Device key — authorizes an individual device.
• Recovery key — restores or rotates access.

Device linking

sequenceDiagram
    participant O as Existing Device
    participant N as New Device
    participant I as Identity Registry
    N->>O: Display link request
    O->>O: Verify request details
    O->>I: Authorize new device key
    I-->>N: Confirm authorization
    O-->>N: Transfer encrypted account state