SignedPreKeyRecord constructor
Implementation
SignedPreKeyRecord(
int id, Int64 timestamp, ECKeyPair keyPair, Uint8List signature) {
_structure = SignedPreKeyRecordStructure.create()
..id = id
..timestamp = timestamp
..publicKey = keyPair.publicKey.serialize()
..privateKey = keyPair.privateKey.serialize()
..signature = signature;
}