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View/edit binary Protocol Buffers messages
Used in: PrivateKey, PublicKey
RSA = 0
Ed25519 = 1
Secp256k1 = 2
ECDSA = 3
Curve25519 = 4
required KeyType Type = 1
required bytes Data = 2
Used in: plaintext.pb.Exchange
required KeyType Type = 1
required bytes Data = 2