Long-term identity key pair (X25519 + Ed25519).
Hex-encoded X25519 private key (32 bytes).
Hex-encoded X25519 public key (32 bytes).
Hex-encoded Ed25519 signing private key (32 bytes).
Hex-encoded Ed25519 signing public key (32 bytes).
Long-term identity key pair (X25519 + Ed25519).