Function parseKeyAnnouncement

parseKeyAnnouncement(
note: Uint8Array,
ed25519PublicKey?: Uint8Array<ArrayBufferLike>,
): DiscoveredKey | undefined
Parse a key announcement from a transaction note.

Key announcement format:
- 32 bytes: X25519 public key
- 64 bytes (optional): Ed25519 signature
Parameters
- note: Uint8Array
  The transaction note field
- Optionaled25519PublicKey: Uint8Array<ArrayBufferLike>
  The sender's Ed25519 public key (for verification)
Returns DiscoveredKey | undefined
DiscoveredKey if valid, undefined otherwise
- Defined in src/blockchain/discovery.ts:22