org.bouncycastle.openpgp.operator.PBESecretKeyDecryptor Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of bcpg-lts8on Show documentation

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.

The newest version!

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;

    public abstract byte[] recoverKeyData(
        int encAlgorithm,
        int aeadAlgorithm,
        byte[] s2kKey,
        byte[] iv,
        int packetTag,
        int keyVersion,
        byte[] keyData,
        byte[] pubkeyData)
        throws PGPException;
}