2021-10-07 15:48:52 +02:00
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// SPDX-FileCopyrightText: 2020 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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2020-12-27 01:56:18 +01:00
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package org.pgpainless.implementation;
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2021-12-14 14:43:16 +01:00
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import java.io.InputStream;
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2020-12-27 01:56:18 +01:00
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import java.security.KeyPair;
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import java.util.Date;
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import org.bouncycastle.crypto.AsymmetricCipherKeyPair;
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import org.bouncycastle.crypto.params.AsymmetricKeyParameter;
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import org.bouncycastle.openpgp.PGPException;
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import org.bouncycastle.openpgp.PGPKeyPair;
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2021-12-14 14:43:16 +01:00
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import org.bouncycastle.openpgp.PGPObjectFactory;
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2020-12-27 01:56:18 +01:00
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import org.bouncycastle.openpgp.PGPPrivateKey;
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import org.bouncycastle.openpgp.PGPPublicKey;
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import org.bouncycastle.openpgp.PGPSecretKey;
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2021-10-15 14:58:17 +02:00
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import org.bouncycastle.openpgp.PGPSessionKey;
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2021-12-14 14:43:16 +01:00
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import org.bouncycastle.openpgp.bc.BcPGPObjectFactory;
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2020-12-27 01:56:18 +01:00
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import org.bouncycastle.openpgp.operator.KeyFingerPrintCalculator;
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import org.bouncycastle.openpgp.operator.PBEDataDecryptorFactory;
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import org.bouncycastle.openpgp.operator.PBEKeyEncryptionMethodGenerator;
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import org.bouncycastle.openpgp.operator.PBESecretKeyDecryptor;
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import org.bouncycastle.openpgp.operator.PBESecretKeyEncryptor;
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import org.bouncycastle.openpgp.operator.PGPContentSignerBuilder;
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import org.bouncycastle.openpgp.operator.PGPContentVerifierBuilderProvider;
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import org.bouncycastle.openpgp.operator.PGPDataEncryptorBuilder;
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import org.bouncycastle.openpgp.operator.PGPDigestCalculator;
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import org.bouncycastle.openpgp.operator.PublicKeyDataDecryptorFactory;
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import org.bouncycastle.openpgp.operator.PublicKeyKeyEncryptionMethodGenerator;
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import org.bouncycastle.openpgp.operator.SessionKeyDataDecryptorFactory;
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2020-12-27 01:56:18 +01:00
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import org.bouncycastle.openpgp.operator.bc.BcKeyFingerprintCalculator;
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import org.bouncycastle.openpgp.operator.bc.BcPBEDataDecryptorFactory;
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import org.bouncycastle.openpgp.operator.bc.BcPBEKeyEncryptionMethodGenerator;
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import org.bouncycastle.openpgp.operator.bc.BcPBESecretKeyDecryptorBuilder;
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import org.bouncycastle.openpgp.operator.bc.BcPBESecretKeyEncryptorBuilder;
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import org.bouncycastle.openpgp.operator.bc.BcPGPContentSignerBuilder;
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import org.bouncycastle.openpgp.operator.bc.BcPGPContentVerifierBuilderProvider;
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import org.bouncycastle.openpgp.operator.bc.BcPGPDataEncryptorBuilder;
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import org.bouncycastle.openpgp.operator.bc.BcPGPDigestCalculatorProvider;
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import org.bouncycastle.openpgp.operator.bc.BcPGPKeyConverter;
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import org.bouncycastle.openpgp.operator.bc.BcPGPKeyPair;
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import org.bouncycastle.openpgp.operator.bc.BcPublicKeyDataDecryptorFactory;
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import org.bouncycastle.openpgp.operator.bc.BcPublicKeyKeyEncryptionMethodGenerator;
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import org.bouncycastle.openpgp.operator.bc.BcSessionKeyDataDecryptorFactory;
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2020-12-27 01:56:18 +01:00
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import org.bouncycastle.openpgp.operator.jcajce.JcaPGPKeyPair;
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import org.pgpainless.algorithm.HashAlgorithm;
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import org.pgpainless.algorithm.PublicKeyAlgorithm;
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import org.pgpainless.algorithm.SymmetricKeyAlgorithm;
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2022-09-07 13:35:58 +02:00
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import org.pgpainless.s2k.Passphrase;
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2021-01-03 15:52:33 +01:00
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public class BcImplementationFactory extends ImplementationFactory {
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@Override
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public PBESecretKeyEncryptor getPBESecretKeyEncryptor(PGPSecretKey secretKey, Passphrase passphrase)
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throws PGPException {
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2021-02-25 23:10:25 +01:00
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int keyEncryptionAlgorithm = secretKey.getKeyEncryptionAlgorithm();
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if (secretKey.getS2K() == null) {
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return getPBESecretKeyEncryptor(SymmetricKeyAlgorithm.requireFromId(keyEncryptionAlgorithm), passphrase);
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}
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int hashAlgorithm = secretKey.getS2K().getHashAlgorithm();
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PGPDigestCalculator digestCalculator = getPGPDigestCalculator(hashAlgorithm);
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long iterationCount = secretKey.getS2K().getIterationCount();
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return new BcPBESecretKeyEncryptorBuilder(keyEncryptionAlgorithm, digestCalculator, (int) iterationCount)
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2020-12-27 01:56:18 +01:00
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.build(passphrase.getChars());
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}
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@Override
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public PBESecretKeyEncryptor getPBESecretKeyEncryptor(SymmetricKeyAlgorithm symmetricKeyAlgorithm,
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PGPDigestCalculator digestCalculator,
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Passphrase passphrase) {
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return new BcPBESecretKeyEncryptorBuilder(symmetricKeyAlgorithm.getAlgorithmId(), digestCalculator)
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.build(passphrase.getChars());
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}
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@Override
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public PBESecretKeyDecryptor getPBESecretKeyDecryptor(Passphrase passphrase) {
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return new BcPBESecretKeyDecryptorBuilder(getPGPDigestCalculatorProvider())
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.build(passphrase.getChars());
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}
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@Override
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public BcPGPDigestCalculatorProvider getPGPDigestCalculatorProvider() {
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return new BcPGPDigestCalculatorProvider();
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}
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@Override
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public PGPContentVerifierBuilderProvider getPGPContentVerifierBuilderProvider() {
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return new BcPGPContentVerifierBuilderProvider();
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}
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@Override
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public PGPContentSignerBuilder getPGPContentSignerBuilder(int keyAlgorithm, int hashAlgorithm) {
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return new BcPGPContentSignerBuilder(keyAlgorithm, hashAlgorithm);
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}
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@Override
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public KeyFingerPrintCalculator getKeyFingerprintCalculator() {
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return new BcKeyFingerprintCalculator();
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}
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@Override
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public PBEDataDecryptorFactory getPBEDataDecryptorFactory(Passphrase passphrase) {
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return new BcPBEDataDecryptorFactory(passphrase.getChars(), getPGPDigestCalculatorProvider());
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}
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@Override
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public PublicKeyDataDecryptorFactory getPublicKeyDataDecryptorFactory(PGPPrivateKey privateKey) {
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return new BcPublicKeyDataDecryptorFactory(privateKey);
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}
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@Override
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public PublicKeyKeyEncryptionMethodGenerator getPublicKeyKeyEncryptionMethodGenerator(PGPPublicKey key) {
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return new BcPublicKeyKeyEncryptionMethodGenerator(key);
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}
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@Override
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public PBEKeyEncryptionMethodGenerator getPBEKeyEncryptionMethodGenerator(Passphrase passphrase) {
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return new BcPBEKeyEncryptionMethodGenerator(passphrase.getChars());
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}
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@Override
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public PGPDataEncryptorBuilder getPGPDataEncryptorBuilder(int symmetricKeyAlgorithm) {
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return new BcPGPDataEncryptorBuilder(symmetricKeyAlgorithm);
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}
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@Override
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public PGPKeyPair getPGPKeyPair(PublicKeyAlgorithm algorithm, KeyPair keyPair, Date creationDate)
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throws PGPException {
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return new BcPGPKeyPair(algorithm.getAlgorithmId(), jceToBcKeyPair(algorithm, keyPair, creationDate), creationDate);
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}
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@Override
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public PBESecretKeyEncryptor getPBESecretKeyEncryptor(SymmetricKeyAlgorithm encryptionAlgorithm, HashAlgorithm hashAlgorithm, int s2kCount, Passphrase passphrase) throws PGPException {
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return new BcPBESecretKeyEncryptorBuilder(
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encryptionAlgorithm.getAlgorithmId(),
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getPGPDigestCalculator(hashAlgorithm),
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s2kCount)
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.build(passphrase.getChars());
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}
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2021-10-15 14:58:17 +02:00
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@Override
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public SessionKeyDataDecryptorFactory provideSessionKeyDataDecryptorFactory(PGPSessionKey sessionKey) {
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return new BcSessionKeyDataDecryptorFactory(sessionKey);
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}
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2021-12-14 14:43:16 +01:00
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@Override
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public PGPObjectFactory getPGPObjectFactory(byte[] bytes) {
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return new BcPGPObjectFactory(bytes);
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}
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@Override
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public PGPObjectFactory getPGPObjectFactory(InputStream inputStream) {
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return new BcPGPObjectFactory(inputStream);
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}
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2020-12-27 01:56:18 +01:00
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private AsymmetricCipherKeyPair jceToBcKeyPair(PublicKeyAlgorithm algorithm,
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KeyPair keyPair,
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Date creationDate) throws PGPException {
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BcPGPKeyConverter converter = new BcPGPKeyConverter();
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PGPKeyPair pair = new JcaPGPKeyPair(algorithm.getAlgorithmId(), keyPair, creationDate);
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AsymmetricKeyParameter publicKey = converter.getPublicKey(pair.getPublicKey());
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AsymmetricKeyParameter privateKey = converter.getPrivateKey(pair.getPrivateKey());
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return new AsymmetricCipherKeyPair(publicKey, privateKey);
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}
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}
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