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;

public interface Wrapper
{
    public void init(boolean forWrapping, CipherParameters param);

    
Return the name of the algorithm the wrapper implements.

Returns:the name of the algorithm the wrapper implements.
/**
     * Return the name of the algorithm the wrapper implements.
     *
     * @return the name of the algorithm the wrapper implements.
     */
    public String getAlgorithmName();

    public byte[] wrap(byte[] in, int inOff, int inLen);

    public byte[] unwrap(byte[] in, int inOff, int inLen)
        throws InvalidCipherTextException;
}