org.bouncycastle.crypto.params.DHUPublicParameters Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bouncycastle Show documentation

The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 and up. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.

There is a newer version: 1.2.2.1-jre17

Show newest version

package org.bouncycastle.crypto.params;

import org.bouncycastle.crypto.CipherParameters;

/**
 * Parameters holder for static/ephemeral agreement as described in NIST SP 800-56A.
 */
public class DHUPublicParameters
    implements CipherParameters
{
    private DHPublicKeyParameters staticPublicKey;
    private DHPublicKeyParameters ephemeralPublicKey;

    public DHUPublicParameters(
        DHPublicKeyParameters   staticPublicKey,
        DHPublicKeyParameters   ephemeralPublicKey)
    {
        if (staticPublicKey == null)
        {
            throw new NullPointerException("staticPublicKey cannot be null");
        }
        if (ephemeralPublicKey == null)
        {
            throw new NullPointerException("ephemeralPublicKey cannot be null");
        }
        if (!staticPublicKey.getParameters().equals(ephemeralPublicKey.getParameters()))
        {
            throw new IllegalArgumentException("Static and ephemeral public keys have different domain parameters");
        }

        this.staticPublicKey = staticPublicKey;
        this.ephemeralPublicKey = ephemeralPublicKey;
    }

    public DHPublicKeyParameters getStaticPublicKey()
    {
        return staticPublicKey;
    }

    public DHPublicKeyParameters getEphemeralPublicKey()
    {
        return ephemeralPublicKey;
    }
}