ch.epfl.dedis.calypso

Class LTSInstance

java.lang.Object

ch.epfl.dedis.calypso.LTSInstance

public class LTSInstance
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static String	ContractId
static String	InvokeCommand

Constructor Summary

Constructors

Constructor and Description
LTSInstance(CalypsoRPC calypso, DarcId darcBaseID, Roster roster, List<Signer> signers, List<Long> signerCtrs)

Method Summary

Modifier and Type	Method and Description
static LTSInstance	fromByzCoin(CalypsoRPC calypso, InstanceId id) Constructor used to connect to an existing instance.
Instance	getInstance() Get the instance object.
Proof	getProofAndVerify() Retrieves and verifies the proof for this instance.
void	reshareLTS(Roster roster, List<Signer> signers, List<Long> signerCtrs) Start the resharing process that re-distributes the LTS shares to a different roster.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ContractId

public static String ContractId

InvokeCommand

public static String InvokeCommand

Constructor Detail

LTSInstance

public LTSInstance(CalypsoRPC calypso,
                   DarcId darcBaseID,
                   Roster roster,
                   List<Signer> signers,
                   List<Long> signerCtrs)
            throws CothorityException

Parameters:

calypso -

darcBaseID -

roster -

signers -

signerCtrs -

Throws:

CothorityException

Method Detail

getInstance

public Instance getInstance()

Get the instance object.

Returns:

the Instance

fromByzCoin

public static LTSInstance fromByzCoin(CalypsoRPC calypso,
                                      InstanceId id)
                               throws CothorityException

Constructor used to connect to an existing instance.

Parameters:

calypso - the calypso RPC

id - the instance ID to connect

Returns:

an LTSInstance

Throws:

CothorityException - if something goes wrong

reshareLTS

public void reshareLTS(Roster roster,
                       List<Signer> signers,
                       List<Long> signerCtrs)
                throws CothorityException

Start the resharing process that re-distributes the LTS shares to a different roster. Note that this is only the first step for re-sharing. After new roster is confirmed and stored in the block, the client must instruct the CalypsoRPC to run the actual re-sharing protocol.

Parameters:

roster - the new roster

signers - the list of signers that are authorized to run the reshare contract

signerCtrs - the monotonically increasing counter for every signer

Throws:

CothorityException - if something goes wrong

getProofAndVerify

public Proof getProofAndVerify()
                        throws CothorityCommunicationException,
                               CothorityCryptoException

Retrieves and verifies the proof for this instance.

Returns:

the proof

Throws:

CothorityCommunicationException - when the communication fails

CothorityCryptoException - when the proof cannot be verified or the instance is not in the proof