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The Bouncy Castle Java APIs for the OpenPGP Protocol. The APIs are designed primarily to be used in conjunction with the BC LTS provider but may also be used with other providers providing cryptographic services.

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package org.bouncycastle.openpgp.operator;

import org.bouncycastle.openpgp.PGPException;

public abstract class PGPSecretKeyDecryptorWithAAD
    extends PBESecretKeyDecryptor
{
    public PGPSecretKeyDecryptorWithAAD(char[] passPhrase, PGPDigestCalculatorProvider calculatorProvider)
    {
        super(passPhrase, calculatorProvider);
    }

    public byte[] recoverKeyData(int encAlgorithm, byte[] key, byte[] iv, byte[] keyData, int keyOff, int keyLen)
        throws PGPException
    {
        return recoverKeyData(encAlgorithm, key, iv, null, keyData, keyOff, keyLen);
    }

    public abstract byte[] recoverKeyData(int encAlgorithm, byte[] key, byte[] iv, byte[] aad, byte[] keyData, int keyOff, int keyLen) throws PGPException;
}