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optional bytes epubkey = 1
optional bytes signature = 2
optional bytes libp2p_key = 1
optional bytes noise_static_key_signature = 2
optional bytes libp2p_data = 3
optional bytes libp2p_data_signature = 4
optional bytes rand = 1
optional bytes pubkey = 2
optional string exchanges = 3
optional string ciphers = 4
optional string hashes = 5