http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8.
  • The Legion of the Bouncy Castle Inc. 
package org.bouncycastle.crypto.agreement.jpake;

import java.math.BigInteger;


The payload sent/received during the optional third round of a J-PAKE exchange,
which is for explicit key confirmation.

 Each JPAKEParticipant creates and sends an instance of this payload to the other JPAKEParticipant. The payload to send should be created via JPAKEParticipant.createRound3PayloadToSend(BigInteger) 
 Each JPAKEParticipant must also validate the payload received from the other JPAKEParticipant. The received payload should be validated via JPAKEParticipant.validateRound3PayloadReceived(JPAKERound3Payload, BigInteger) 
/**
 * The payload sent/received during the optional third round of a J-PAKE exchange,
 * which is for explicit key confirmation.
 * <p>
 * Each {@link JPAKEParticipant} creates and sends an instance
 * of this payload to the other {@link JPAKEParticipant}.
 * The payload to send should be created via
 * {@link JPAKEParticipant#createRound3PayloadToSend(BigInteger)}
 * <p>
 * Each {@link JPAKEParticipant} must also validate the payload
 * received from the other {@link JPAKEParticipant}.
 * The received payload should be validated via
 * {@link JPAKEParticipant#validateRound3PayloadReceived(JPAKERound3Payload, BigInteger)}
 */
public class JPAKERound3Payload
{
    
The id of the JPAKEParticipant who created/sent this payload. 
/**
     * The id of the {@link JPAKEParticipant} who created/sent this payload.
     */
    private final String participantId;

    
The value of MacTag, as computed by round 3.

See Also:
  • calculateMacTag.calculateMacTag(String, String, BigInteger, BigInteger, BigInteger, BigInteger, BigInteger, Digest)
/**
     * The value of MacTag, as computed by round 3.
     *
     * @see JPAKEUtil#calculateMacTag(String, String, BigInteger, BigInteger, BigInteger, BigInteger, BigInteger, org.bouncycastle.crypto.Digest)
     */
    private final BigInteger macTag;

    public JPAKERound3Payload(String participantId, BigInteger magTag)
    {
        this.participantId = participantId;
        this.macTag = magTag;
    }

    public String getParticipantId()
    {
        return participantId;
    }

    public BigInteger getMacTag()
    {
        return macTag;
    }

}