mirror of
https://github.com/pgpainless/pgpainless.git
synced 2024-06-16 08:34:53 +02:00
94 lines
3.2 KiB
Java
94 lines
3.2 KiB
Java
/*
|
|
* Copyright 2018 Paul Schaub.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
package org.pgpainless.key.protection;
|
|
|
|
import javax.annotation.Nonnull;
|
|
import javax.annotation.Nullable;
|
|
import java.util.HashMap;
|
|
import java.util.Map;
|
|
|
|
import org.bouncycastle.openpgp.PGPException;
|
|
import org.bouncycastle.openpgp.operator.PBESecretKeyDecryptor;
|
|
import org.bouncycastle.openpgp.operator.PBESecretKeyEncryptor;
|
|
import org.pgpainless.util.Passphrase;
|
|
|
|
/**
|
|
* Implementation of the {@link SecretKeyRingProtector} which holds a map of key ids and their passwords.
|
|
* In case the needed passphrase is not contained in the map, the {@code missingPassphraseCallback} will be consulted,
|
|
* and the passphrase is added to the map.
|
|
*/
|
|
public class PassphraseMapKeyRingProtector implements SecretKeyRingProtector, SecretKeyPassphraseProvider {
|
|
|
|
private final Map<Long, Passphrase> cache = new HashMap<>();
|
|
private final SecretKeyRingProtector protector;
|
|
private final SecretKeyPassphraseProvider provider;
|
|
|
|
public PassphraseMapKeyRingProtector(@Nonnull Map<Long, Passphrase> passphrases,
|
|
@Nonnull KeyRingProtectionSettings protectionSettings,
|
|
@Nullable SecretKeyPassphraseProvider missingPassphraseCallback) {
|
|
this.cache.putAll(passphrases);
|
|
this.protector = new PasswordBasedSecretKeyRingProtector(protectionSettings, this);
|
|
this.provider = missingPassphraseCallback;
|
|
}
|
|
|
|
/**
|
|
* Add a passphrase to the cache.
|
|
*
|
|
* @param keyId id of the key
|
|
* @param passphrase passphrase
|
|
*/
|
|
public void addPassphrase(@Nonnull Long keyId, @Nullable Passphrase passphrase) {
|
|
this.cache.put(keyId, passphrase);
|
|
}
|
|
|
|
/**
|
|
* Remove a passphrase from the cache.
|
|
* The passphrase will be cleared and then removed.
|
|
*
|
|
* @param keyId id of the key
|
|
*/
|
|
public void forgetPassphrase(@Nonnull Long keyId) {
|
|
Passphrase passphrase = cache.get(keyId);
|
|
passphrase.clear();
|
|
cache.remove(keyId);
|
|
}
|
|
|
|
@Override
|
|
@Nullable
|
|
public Passphrase getPassphraseFor(@Nonnull Long keyId) {
|
|
Passphrase passphrase = cache.get(keyId);
|
|
if (passphrase == null || !passphrase.isValid()) {
|
|
passphrase = provider.getPassphraseFor(keyId);
|
|
if (passphrase != null) {
|
|
cache.put(keyId, passphrase);
|
|
}
|
|
}
|
|
return passphrase;
|
|
}
|
|
|
|
@Override
|
|
@Nullable
|
|
public PBESecretKeyDecryptor getDecryptor(@Nonnull Long keyId) {
|
|
return protector.getDecryptor(keyId);
|
|
}
|
|
|
|
@Override
|
|
@Nullable
|
|
public PBESecretKeyEncryptor getEncryptor(@Nonnull Long keyId) throws PGPException {
|
|
return protector.getEncryptor(keyId);
|
|
}
|
|
}
|