org.bouncycastle.crypto.BasicAgreement Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bcprov-ext-jdk15on Show documentation

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 1.7. Note: this package includes the IDEA and NTRU encryption algorithms.

There is a newer version: 1.70

Show newest version

package org.bouncycastle.crypto;

import java.math.BigInteger;

/**
 * The basic interface that basic Diffie-Hellman implementations
 * conforms to.
 */
public interface BasicAgreement
{
    /**
     * initialise the agreement engine.
     */
    void init(CipherParameters param);

    /**
     * return the field size for the agreement algorithm in bytes.
     */
    int getFieldSize();

    /**
     * given a public key from a given party calculate the next
     * message in the agreement sequence. 
     */
    BigInteger calculateAgreement(CipherParameters pubKey);
}