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A GWT cryptography library ported from Legion of the Bouncy Castle.

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package org.bouncycastle.crypto;

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

    /**
     * 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;
}