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package org.bouncycastle.openpgp.operator;
import org.bouncycastle.bcpg.S2K;
import org.bouncycastle.openpgp.PGPException;
public abstract class PBESecretKeyDecryptor
{
private char[] passPhrase;
private PGPDigestCalculatorProvider calculatorProvider;
protected PBESecretKeyDecryptor(char[] passPhrase, PGPDigestCalculatorProvider calculatorProvider)
{
this.passPhrase = passPhrase;
this.calculatorProvider = calculatorProvider;
}
public PGPDigestCalculator getChecksumCalculator(int hashAlgorithm)
throws PGPException
{
return calculatorProvider.get(hashAlgorithm);
}
public byte[] makeKeyFromPassPhrase(int keyAlgorithm, S2K s2k)
throws PGPException
{
return PGPUtil.makeKeyFromPassPhrase(calculatorProvider, keyAlgorithm, s2k, passPhrase);
}
public abstract byte[] recoverKeyData(int encAlgorithm, byte[] key, byte[] iv, byte[] keyData, int keyOff, int keyLen)
throws PGPException;
}
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