org.cryptimeleon.craco.protocols

Interface TwoPartyProtocolInstance

All Known Subinterfaces:

InteractiveArgumentInstance

All Known Implementing Classes:

BaseProtocolInstance, PSBlindSignProtocol.BlindSignProtocolInstance, SigmaProtocolInstance, SigmaProtocolProverInstance, SigmaProtocolVerifierInstance

public interface TwoPartyProtocolInstance

An instance of a TwoPartyProtocol, modeling a single protocol run from one of the roles' perspective.

Method Summary

Modifier and Type	Method and Description
TwoPartyProtocol	getProtocol()
java.lang.String	getRoleName()
boolean	hasTerminated() Returns true if the protocol is done, meaning no further calls to nextMessage() are necessary.
org.cryptimeleon.math.serialization.Representation	nextMessage(org.cryptimeleon.math.serialization.Representation received) Outputs the next message this protocol instance demands to be sent to the other party.
default boolean	sendsFirstMessage() Returns true iff this role sends the first message of this protocol.

Method Detail

getProtocol

TwoPartyProtocol getProtocol()

getRoleName

java.lang.String getRoleName()

sendsFirstMessage

default boolean sendsFirstMessage()

Returns true iff this role sends the first message of this protocol.

nextMessage

org.cryptimeleon.math.serialization.Representation nextMessage(org.cryptimeleon.math.serialization.Representation received)

Outputs the next message this protocol instance demands to be sent to the other party.

Parameters:

received - the message recently received from the other party or null if this is the first round and no messages have been sent yet

Returns:

the message m to be sent to the other party (who then calls nextMessage(m) on their end). If nextMessage returns null, the protocol has terminated

hasTerminated

boolean hasTerminated()

Returns true if the protocol is done, meaning no further calls to nextMessage() are necessary.