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https://github.com/pgpainless/pgpainless.git
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Add test for decryption with removed private key
This commit is contained in:
parent
1a419479f3
commit
bd27232373
5 changed files with 159 additions and 113 deletions
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@ -4,18 +4,12 @@
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package org.pgpainless.decryption_verification;
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package org.pgpainless.decryption_verification;
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import org.bouncycastle.bcpg.S2K;
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import org.bouncycastle.openpgp.PGPException;
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import org.bouncycastle.openpgp.PGPException;
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import org.bouncycastle.openpgp.PGPSecretKey;
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import org.bouncycastle.openpgp.PGPSecretKeyRing;
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import org.bouncycastle.openpgp.operator.PGPDataDecryptor;
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import org.bouncycastle.openpgp.operator.PGPDataDecryptor;
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import org.bouncycastle.openpgp.operator.PublicKeyDataDecryptorFactory;
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import org.bouncycastle.openpgp.operator.PublicKeyDataDecryptorFactory;
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import org.bouncycastle.openpgp.operator.bc.BcPublicKeyDataDecryptorFactory;
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import org.bouncycastle.openpgp.operator.bc.BcPublicKeyDataDecryptorFactory;
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import org.pgpainless.key.SubkeyIdentifier;
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import org.pgpainless.key.SubkeyIdentifier;
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import java.util.HashSet;
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import java.util.Set;
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/**
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/**
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* Enable integration of hardware-backed OpenPGP keys.
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* Enable integration of hardware-backed OpenPGP keys.
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*/
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*/
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@ -41,31 +35,6 @@ public class HardwareSecurity {
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}
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}
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/**
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* Return the key-ids of all keys which appear to be stored on a hardware token / smartcard.
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*
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* @param secretKeys secret keys
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* @return set of keys with S2K type DIVERT_TO_CARD or GNU_DUMMY_S2K
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*/
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public static Set<SubkeyIdentifier> getIdsOfHardwareBackedKeys(PGPSecretKeyRing secretKeys) {
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Set<SubkeyIdentifier> hardwareBackedKeys = new HashSet<>();
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for (PGPSecretKey secretKey : secretKeys) {
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S2K s2K = secretKey.getS2K();
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if (s2K == null) {
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continue;
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}
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int type = s2K.getType();
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int mode = s2K.getProtectionMode();
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// TODO: Is GNU_DUMMY_S2K appropriate?
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if (type == S2K.GNU_DUMMY_S2K && mode == S2K.GNU_PROTECTION_MODE_DIVERT_TO_CARD) {
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SubkeyIdentifier hardwareBackedKey = new SubkeyIdentifier(secretKeys, secretKey.getKeyID());
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hardwareBackedKeys.add(hardwareBackedKey);
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}
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}
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return hardwareBackedKeys;
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}
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/**
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/**
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* Implementation of {@link PublicKeyDataDecryptorFactory} which delegates decryption of encrypted session keys
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* Implementation of {@link PublicKeyDataDecryptorFactory} which delegates decryption of encrypted session keys
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* to a {@link DecryptionCallback}.
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* to a {@link DecryptionCallback}.
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@ -10,11 +10,14 @@ import org.bouncycastle.bcpg.SecretKeyPacket;
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import org.bouncycastle.bcpg.SecretSubkeyPacket;
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import org.bouncycastle.bcpg.SecretSubkeyPacket;
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import org.bouncycastle.openpgp.PGPSecretKey;
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import org.bouncycastle.openpgp.PGPSecretKey;
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import org.bouncycastle.openpgp.PGPSecretKeyRing;
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import org.bouncycastle.openpgp.PGPSecretKeyRing;
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import org.pgpainless.key.SubkeyIdentifier;
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import javax.annotation.Nonnull;
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import javax.annotation.Nonnull;
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import java.util.ArrayList;
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import java.util.ArrayList;
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import java.util.Collection;
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import java.util.Collection;
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import java.util.HashSet;
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import java.util.List;
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import java.util.List;
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import java.util.Set;
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/**
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/**
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* This class can be used to remove private keys from secret software-keys by replacing them with
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* This class can be used to remove private keys from secret software-keys by replacing them with
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@ -29,6 +32,33 @@ public final class GnuPGDummyKeyUtil {
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}
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}
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/**
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* Return the key-ids of all keys which appear to be stored on a hardware token / smartcard by GnuPG.
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* Note, that this functionality is based on GnuPGs proprietary S2K extensions, which are not strictly required
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* for dealing with hardware-backed keys.
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*
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* @param secretKeys secret keys
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* @return set of keys with S2K type GNU_DUMMY_S2K and protection mode DIVERT_TO_CARD
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*/
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public static Set<SubkeyIdentifier> getIdsOfKeysWithGnuPGS2KDivertedToCard(PGPSecretKeyRing secretKeys) {
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Set<SubkeyIdentifier> hardwareBackedKeys = new HashSet<>();
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for (PGPSecretKey secretKey : secretKeys) {
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S2K s2K = secretKey.getS2K();
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if (s2K == null) {
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continue;
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}
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int type = s2K.getType();
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int mode = s2K.getProtectionMode();
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// TODO: Is GNU_DUMMY_S2K appropriate?
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if (type == S2K.GNU_DUMMY_S2K && mode == S2K.GNU_PROTECTION_MODE_DIVERT_TO_CARD) {
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SubkeyIdentifier hardwareBackedKey = new SubkeyIdentifier(secretKeys, secretKey.getKeyID());
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hardwareBackedKeys.add(hardwareBackedKey);
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}
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}
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return hardwareBackedKeys;
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}
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/**
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/**
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* Modify the given {@link PGPSecretKeyRing}.
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* Modify the given {@link PGPSecretKeyRing}.
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*
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*
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@ -1,82 +0,0 @@
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// SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package org.pgpainless.decryption_verification;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import java.io.IOException;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.Set;
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import org.bouncycastle.openpgp.PGPSecretKey;
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import org.bouncycastle.openpgp.PGPSecretKeyRing;
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import org.junit.jupiter.api.Test;
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import org.pgpainless.PGPainless;
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import org.pgpainless.key.SubkeyIdentifier;
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import org.pgpainless.key.gnu_dummy_s2k.GnuPGDummyKeyUtil;
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import org.pgpainless.key.util.KeyIdUtil;
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public class HardwareSecurityTest {
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private static final String KEY = "-----BEGIN PGP PRIVATE KEY BLOCK-----\n" +
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"Version: PGPainless\n" +
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"Comment: DE2E 9AB2 6650 8191 53E7 D599 C176 507F 2B5D 43B3\n" +
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"Comment: Alice <alice@pgpainless.org>\n" +
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"\n" +
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"lFgEY1vjgRYJKwYBBAHaRw8BAQdAXjLoPTOIOdvlFT2Nt3rcvLTVx5ujPBGghZ5S\n" +
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"D5tEnyoAAP0fAUJTiPrxZYdzs6MP0KFo+Nmr/wb1PJHTkzmYpt4wkRKBtBxBbGlj\n" +
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"ZSA8YWxpY2VAcGdwYWlubGVzcy5vcmc+iI8EExYKAEEFAmNb44EJEMF2UH8rXUOz\n" +
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"FiEE3i6asmZQgZFT59WZwXZQfytdQ7MCngECmwEFFgIDAQAECwkIBwUVCgkICwKZ\n" +
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"AQAAHLYA/AgW+YrpU+UqrwX2dhY6RAfgHTTMU89RHjaTHJx8pLrBAP4gthGof00a\n" +
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"XEjwTWteDOO049SIp2AUfj9deJqtrQcHD5xdBGNb44ESCisGAQQBl1UBBQEBB0DN\n" +
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"vUT3awa3YLmwf41LRpPrm7B87AOHfYIP8S9QJ4GDJgMBCAcAAP9bwlSaF+lti8JY\n" +
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"qKFO3qt3ZYQMu1l/LRBle89ZB4zD+BDOiHUEGBYKAB0FAmNb44ECngECmwwFFgID\n" +
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"AQAECwkIBwUVCgkICwAKCRDBdlB/K11Ds/TsAP9kvpUrCWnrWGq+a9n1CqEfCMX5\n" +
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"cT+qzrwNf+J0L22KowD+M9SVO0qssiAqutLE9h9dGYLbEiFvsHzK3WSnjKYbIgac\n" +
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"WARjW+OBFgkrBgEEAdpHDwEBB0BCPh8M5TnXSmG6Ygwp4j5RR4u3hmxl8CYjX4h/\n" +
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"XtvvNwAA/RP04coSrLHVI6vUfbJk4MhWYeyhJBRYY0vGp7yq+wVtEpKI1QQYFgoA\n" +
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"fQUCY1vjgQKeAQKbAgUWAgMBAAQLCQgHBRUKCQgLXyAEGRYKAAYFAmNb44EACgkQ\n" +
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"mlozJSF7rXQW+AD/TA3YBxTd+YbBSwfgqzWNbfT9BBcFrdn3uPCsbvfmqXoA/3oj\n" +
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"oupkgoaXesrGxn2k9hW9/GBXSvNcgY2txZ6/oYoIAAoJEMF2UH8rXUOziZ4A/0Xl\n" +
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"xSZJWmkRpBh5AO8Cnqosz6j947IYAxS16ay+sIOHAP9aN9CUNJIIdHnHdFHO4GZz\n" +
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"ejjknn4wt8NVJP97JxlnBQ==\n" +
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"=qSQb\n" +
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"-----END PGP PRIVATE KEY BLOCK-----";
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@Test
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public void testGetSingleIdOfHardwareBackedKey() throws IOException {
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PGPSecretKeyRing secretKeys = PGPainless.readKeyRing().secretKeyRing(KEY);
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assertTrue(HardwareSecurity.getIdsOfHardwareBackedKeys(secretKeys).isEmpty());
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long encryptionKeyId = KeyIdUtil.fromLongKeyId("0AAD8F5891262F50");
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PGPSecretKeyRing withHardwareBackedEncryptionKey = GnuPGDummyKeyUtil.modify(secretKeys)
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.divertPrivateKeysToCard(GnuPGDummyKeyUtil.KeyFilter.only(encryptionKeyId));
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Set<SubkeyIdentifier> hardwareBackedKeys = HardwareSecurity
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.getIdsOfHardwareBackedKeys(withHardwareBackedEncryptionKey);
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assertEquals(Collections.singleton(new SubkeyIdentifier(secretKeys, encryptionKeyId)), hardwareBackedKeys);
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}
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@Test
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public void testGetIdsOfFullyHardwareBackedKey() throws IOException {
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PGPSecretKeyRing secretKeys = PGPainless.readKeyRing().secretKeyRing(KEY);
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assertTrue(HardwareSecurity.getIdsOfHardwareBackedKeys(secretKeys).isEmpty());
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PGPSecretKeyRing withHardwareBackedEncryptionKey = GnuPGDummyKeyUtil.modify(secretKeys)
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.divertPrivateKeysToCard(GnuPGDummyKeyUtil.KeyFilter.any());
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Set<SubkeyIdentifier> expected = new HashSet<>();
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for (PGPSecretKey key : secretKeys) {
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expected.add(new SubkeyIdentifier(secretKeys, key.getKeyID()));
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}
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Set<SubkeyIdentifier> hardwareBackedKeys = HardwareSecurity
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.getIdsOfHardwareBackedKeys(withHardwareBackedEncryptionKey);
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assertEquals(expected, hardwareBackedKeys);
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}
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}
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@ -0,0 +1,52 @@
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// SPDX-FileCopyrightText: 2022 Paul Schaub <vanitasvitae@fsfe.org>
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//
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// SPDX-License-Identifier: Apache-2.0
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package org.pgpainless.decryption_verification;
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import org.bouncycastle.openpgp.PGPException;
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import org.bouncycastle.openpgp.PGPPublicKeyRing;
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import org.bouncycastle.openpgp.PGPSecretKeyRing;
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import org.bouncycastle.util.io.Streams;
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import org.junit.jupiter.api.Test;
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import org.pgpainless.PGPainless;
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import org.pgpainless.encryption_signing.EncryptionOptions;
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import org.pgpainless.encryption_signing.EncryptionStream;
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import org.pgpainless.encryption_signing.ProducerOptions;
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import org.pgpainless.key.gnu_dummy_s2k.GnuPGDummyKeyUtil;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.security.InvalidAlgorithmParameterException;
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import java.security.NoSuchAlgorithmException;
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import static org.junit.jupiter.api.Assertions.assertThrows;
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public class TryDecryptWithUnavailableGnuDummyKeyTest {
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@Test
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public void testAttemptToDecryptWithRemovedPrivateKeysThrows()
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throws PGPException, InvalidAlgorithmParameterException, NoSuchAlgorithmException, IOException {
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PGPSecretKeyRing secretKeys = PGPainless.generateKeyRing()
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.modernKeyRing("Hardy Hardware <hardy@hard.ware>");
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PGPPublicKeyRing certificate = PGPainless.extractCertificate(secretKeys);
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ByteArrayOutputStream ciphertextOut = new ByteArrayOutputStream();
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EncryptionStream encryptionStream = PGPainless.encryptAndOrSign()
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.onOutputStream(ciphertextOut)
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.withOptions(
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ProducerOptions.encrypt(EncryptionOptions.get().addRecipient(certificate)));
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ByteArrayInputStream plaintextIn = new ByteArrayInputStream("Hello, World!\n".getBytes());
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Streams.pipeAll(plaintextIn, encryptionStream);
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encryptionStream.close();
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PGPSecretKeyRing removedKeys = GnuPGDummyKeyUtil.modify(secretKeys)
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.removePrivateKeys(GnuPGDummyKeyUtil.KeyFilter.any());
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ByteArrayInputStream ciphertextIn = new ByteArrayInputStream(ciphertextOut.toByteArray());
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assertThrows(PGPException.class, () -> PGPainless.decryptAndOrVerify()
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.onInputStream(ciphertextIn)
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.withOptions(ConsumerOptions.get().addDecryptionKey(removedKeys)));
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}
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}
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@ -10,12 +10,17 @@ import org.bouncycastle.openpgp.PGPSecretKey;
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import org.bouncycastle.openpgp.PGPSecretKeyRing;
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import org.bouncycastle.openpgp.PGPSecretKeyRing;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.api.Test;
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import org.pgpainless.PGPainless;
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import org.pgpainless.PGPainless;
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import org.pgpainless.key.SubkeyIdentifier;
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import org.pgpainless.key.util.KeyIdUtil;
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import org.pgpainless.key.util.KeyIdUtil;
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import java.io.IOException;
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import java.io.IOException;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.Set;
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import static org.junit.jupiter.api.Assertions.assertArrayEquals;
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import static org.junit.jupiter.api.Assertions.assertArrayEquals;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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public class GnuPGDummyKeyUtilTest {
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public class GnuPGDummyKeyUtilTest {
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// normal, non-hw-backed key
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// normal, non-hw-backed key
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@ -73,6 +78,29 @@ public class GnuPGDummyKeyUtilTest {
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"=rYoa\n" +
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"=rYoa\n" +
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"-----END PGP PRIVATE KEY BLOCK-----";
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"-----END PGP PRIVATE KEY BLOCK-----";
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public static final String ALL_KEYS_REMOVED = "-----BEGIN PGP PRIVATE KEY BLOCK-----\n" +
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"Version: PGPainless\n" +
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"Comment: 01FD AB6C E04A 5078 79FE 4A18 C312 C97D A9F7 6A4F\n" +
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"Comment: Hardy Hardware <hardy@hard.ware>\n" +
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"\n" +
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"lDsEY1vSiBYJKwYBBAHaRw8BAQdAQ58lZn/HOtg+1b1KS18odyQ6M4LaDdbJAyRf\n" +
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"eBwCeTT+AGUAR05VAbQgSGFyZHkgSGFyZHdhcmUgPGhhcmR5QGhhcmQud2FyZT6I\n" +
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"jwQTFgoAQQUCY1vSiAkQwxLJfan3ak8WIQQB/ats4EpQeHn+ShjDEsl9qfdqTwKe\n" +
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"AQKbAQUWAgMBAAQLCQgHBRUKCQgLApkBAAD5NgD/dtk+U0O4bpBZacV904TIYniZ\n" +
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"xAhmORKreVNP7xGNV3YA/3hNTJfaqsekBnGjSnvHXjHtxIU2p7epkvbajB6dv94J\n" +
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"nEAEY1vSiBIKKwYBBAGXVQEFAQEHQFVwSzbzZhYfSl+oi5nTSTNvGXPTxp8xKAA/\n" +
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"fk+KdJQ8AwEIB/4AZQBHTlUBiHUEGBYKAB0FAmNb0ogCngECmwwFFgIDAQAECwkI\n" +
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"BwUVCgkICwAKCRDDEsl9qfdqT8nJAP0YGPS+O1hkB/kWLR4Qp2ICCzTJmtA+Qyzp\n" +
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"4v7ze17vvQD+MbQN4nL7zx859ZOP6aLE73w9k+dDQzJtYL/VBRO8/QGcOwRjW9KI\n" +
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"FgkrBgEEAdpHDwEBB0C9JhMPrS3y/HXR1IQEAJSgh9UKl44HfQPqd/Am1sNPRv4A\n" +
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||||||
|
"ZQBHTlUBiNUEGBYKAH0FAmNb0ogCngECmwIFFgIDAQAECwkIBwUVCgkIC18gBBkW\n" +
|
||||||
|
"CgAGBQJjW9KIAAoJEJQCL6VtwFtJDmMBAKqsGfRFQxJXyPgugWBgEaO5lt9fMM0y\n" +
|
||||||
|
"Uxa76cmSWe5fAQD2oLSEW1GOgIs64+Z3gvtXopmeupT09HhI7ger98zDAwAKCRDD\n" +
|
||||||
|
"Esl9qfdqTwR6AP9Xftw8xZ7/MWhYImk/xheqPy07K4qo3T1pGKUvUqjWQQEAhE3r\n" +
|
||||||
|
"0oTcJn+KVCwGjF6AYiLOzO/R1x5bSlYD3FeJ3Qo=\n" +
|
||||||
|
"=GEN/\n" +
|
||||||
|
"-----END PGP PRIVATE KEY BLOCK-----";
|
||||||
|
|
||||||
public static final String PRIMARY_KEY_ON_CARD = "-----BEGIN PGP PRIVATE KEY BLOCK-----\n" +
|
public static final String PRIMARY_KEY_ON_CARD = "-----BEGIN PGP PRIVATE KEY BLOCK-----\n" +
|
||||||
"Version: PGPainless\n" +
|
"Version: PGPainless\n" +
|
||||||
"Comment: 01FD AB6C E04A 5078 79FE 4A18 C312 C97D A9F7 6A4F\n" +
|
"Comment: 01FD AB6C E04A 5078 79FE 4A18 C312 C97D A9F7 6A4F\n" +
|
||||||
|
|
@ -197,4 +225,53 @@ public class GnuPGDummyKeyUtilTest {
|
||||||
|
|
||||||
assertArrayEquals(expected.getEncoded(), onCard.getEncoded());
|
assertArrayEquals(expected.getEncoded(), onCard.getEncoded());
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
public void testRemoveAllKeys() throws IOException {
|
||||||
|
PGPSecretKeyRing secretKeys = PGPainless.readKeyRing().secretKeyRing(FULL_KEY);
|
||||||
|
PGPSecretKeyRing expected = PGPainless.readKeyRing().secretKeyRing(ALL_KEYS_REMOVED);
|
||||||
|
|
||||||
|
PGPSecretKeyRing removedSecretKeys = GnuPGDummyKeyUtil.modify(secretKeys)
|
||||||
|
.removePrivateKeys(GnuPGDummyKeyUtil.KeyFilter.any());
|
||||||
|
|
||||||
|
for (PGPSecretKey key : removedSecretKeys) {
|
||||||
|
assertEquals(key.getS2KUsage(), SecretKeyPacket.USAGE_SHA1);
|
||||||
|
S2K s2k = key.getS2K();
|
||||||
|
assertEquals(GnuPGDummyExtension.NO_PRIVATE_KEY.getId(), s2k.getProtectionMode());
|
||||||
|
}
|
||||||
|
|
||||||
|
assertArrayEquals(expected.getEncoded(), removedSecretKeys.getEncoded());
|
||||||
|
}
|
||||||
|
|
||||||
|
@Test
|
||||||
|
public void testGetSingleIdOfHardwareBackedKey() throws IOException {
|
||||||
|
PGPSecretKeyRing secretKeys = PGPainless.readKeyRing().secretKeyRing(FULL_KEY);
|
||||||
|
assertTrue(GnuPGDummyKeyUtil.getIdsOfKeysWithGnuPGS2KDivertedToCard(secretKeys).isEmpty());
|
||||||
|
|
||||||
|
PGPSecretKeyRing withHardwareBackedEncryptionKey = GnuPGDummyKeyUtil.modify(secretKeys)
|
||||||
|
.divertPrivateKeysToCard(GnuPGDummyKeyUtil.KeyFilter.only(encryptionKeyId));
|
||||||
|
|
||||||
|
Set<SubkeyIdentifier> hardwareBackedKeys = GnuPGDummyKeyUtil
|
||||||
|
.getIdsOfKeysWithGnuPGS2KDivertedToCard(withHardwareBackedEncryptionKey);
|
||||||
|
assertEquals(Collections.singleton(new SubkeyIdentifier(secretKeys, encryptionKeyId)), hardwareBackedKeys);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
@Test
|
||||||
|
public void testGetIdsOfFullyHardwareBackedKey() throws IOException {
|
||||||
|
PGPSecretKeyRing secretKeys = PGPainless.readKeyRing().secretKeyRing(FULL_KEY);
|
||||||
|
assertTrue(GnuPGDummyKeyUtil.getIdsOfKeysWithGnuPGS2KDivertedToCard(secretKeys).isEmpty());
|
||||||
|
|
||||||
|
PGPSecretKeyRing withHardwareBackedEncryptionKey = GnuPGDummyKeyUtil.modify(secretKeys)
|
||||||
|
.divertPrivateKeysToCard(GnuPGDummyKeyUtil.KeyFilter.any());
|
||||||
|
Set<SubkeyIdentifier> expected = new HashSet<>();
|
||||||
|
for (PGPSecretKey key : secretKeys) {
|
||||||
|
expected.add(new SubkeyIdentifier(secretKeys, key.getKeyID()));
|
||||||
|
}
|
||||||
|
|
||||||
|
Set<SubkeyIdentifier> hardwareBackedKeys = GnuPGDummyKeyUtil
|
||||||
|
.getIdsOfKeysWithGnuPGS2KDivertedToCard(withHardwareBackedEncryptionKey);
|
||||||
|
|
||||||
|
assertEquals(expected, hardwareBackedKeys);
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue