ch.epfl.dedis.calypso

Class ReadData

java.lang.Object

ch.epfl.dedis.calypso.ReadData

public class ReadData
extends Object

A ReadData is the data that is sent to the calypsoRead contract. It is used to log a read request and must be linked to a corresponding write request.

Constructor Summary

Constructors

Constructor and Description
ReadData(Instance inst) Creates a new ReadData from an existing instance.
ReadData(InstanceId writeId, Point readerPk) Construct a read request given the ID of the corresponding write request and the reader's public key.

Method Summary

Modifier and Type	Method and Description
static ReadData	fromProto(byte[] buf) Takes a byte array as an input to parse into the protobuf representation of ReadData.
InstanceId	getWriteId()
Point	getXc()
Calypso.Read	toProto()

Methods inherited from class java.lang.Object

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

Constructor Detail

ReadData

public ReadData(InstanceId writeId,
                Point readerPk)

Construct a read request given the ID of the corresponding write request and the reader's public key.

Parameters:

writeId - the instance of the write request

readerPk - the reader's public key

ReadData

public ReadData(Instance inst)
         throws CothorityNotFoundException

Creates a new ReadData from an existing instance.

Parameters:

inst - the instance

Throws:

CothorityNotFoundException - if the read request in the instance is corrupt

Method Detail

getXc

public Point getXc()

Returns:

the public key under which the re-encryption will take place.

getWriteId

public InstanceId getWriteId()

Returns:

the instanceId of the corresponding Write Instance.

toProto

public Calypso.Read toProto()

Returns:

the the protobuf representation of the ReadData

fromProto

public static ReadData fromProto(byte[] buf)
                          throws com.google.protobuf.InvalidProtocolBufferException

Takes a byte array as an input to parse into the protobuf representation of ReadData.

Parameters:

buf - the protobuf data

Returns:

ReadData

Throws:

com.google.protobuf.InvalidProtocolBufferException - if the protobuf data is invalid.