ch.epfl.dedis.lib.omniledger

Class Proof

java.lang.Object

ch.epfl.dedis.lib.omniledger.Proof

public class Proof
extends Object

Proof represents a key/value entry in the collection and the path to the root node.

Constructor Summary

Constructors

Constructor and Description
Proof(OmniLedgerProto.Proof p) Creates a new proof given a protobuf-representation.

Method Summary

Modifier and Type	Method and Description
byte[]	getKey()
List<byte[]>	getValues()
boolean	matches()
boolean	verify() Verifies the proof with regard to the root id.

Methods inherited from class java.lang.Object

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

Constructor Detail

Proof

public Proof(OmniLedgerProto.Proof p)

Creates a new proof given a protobuf-representation.

Parameters:

p -

Method Detail

verify

public boolean verify()
               throws CothorityException

Verifies the proof with regard to the root id. It will follow all steps and make sure that the hashes work out, starting from the leaf. At the end it will verify against the root hash to make sure that the inclusion proof is correct.

Returns:

true if all checks verify, false if there is a mismatch in the hashes

Throws:

CothorityException

matches

public boolean matches()

Returns:

true if the proof has the key/value pair stored, false if it is a proof of absence.

getKey

public byte[] getKey()

Returns:

the key of the leaf node

getValues

public List<byte[]> getValues()

Returns:

the list of values in the leaf node.