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Spongy Castle is a package-rename (org.bouncycastle.* to org.spongycastle.*) of Bouncy Castle intended for Android. Android ships with a stripped-down version of Bouncy Castle - this causes classloader collisions if you try to add an alternative (updated/complete) Bouncy Castle jar. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5.

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package org.spongycastle.crypto;

/**
 * a holding class for public/private parameter pairs.
 */
public class AsymmetricCipherKeyPair
{
    private CipherParameters    publicParam;
    private CipherParameters    privateParam;

    /**
     * basic constructor.
     *
     * @param publicParam a public key parameters object.
     * @param privateParam the corresponding private key parameters.
     */
    public AsymmetricCipherKeyPair(
        CipherParameters    publicParam,
        CipherParameters    privateParam)
    {
        this.publicParam = publicParam;
        this.privateParam = privateParam;
    }

    /**
     * return the public key parameters.
     *
     * @return the public key parameters.
     */
    public CipherParameters getPublic()
    {
        return publicParam;
    }

    /**
     * return the private key parameters.
     *
     * @return the private key parameters.
     */
    public CipherParameters getPrivate()
    {
        return privateParam;
    }
}