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Code Issues Releases Wiki Activity

Started working on proofs

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This commit is contained in:
Paul Schaub 2021-10-22 15:42:08 +02:00
parent 8b5ffedd29
commit e9dc26b1da
8 changed files with 469 additions and 4 deletions
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141
pgpainless-core/src/main/java/org/pgpainless/signature/ProofUtil.java Normal file
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@ -0,0 +1,141 @@
// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.signature;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.annotation.Nullable;
import org.bouncycastle.bcpg.sig.NotationData;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPPublicKey;
import org.bouncycastle.openpgp.PGPSecretKey;
import org.bouncycastle.openpgp.PGPSecretKeyRing;
import org.bouncycastle.openpgp.PGPSignature;
import org.bouncycastle.openpgp.PGPSignatureSubpacketVector;
import org.pgpainless.PGPainless;
import org.pgpainless.key.info.KeyRingInfo;
import org.pgpainless.key.protection.SecretKeyRingProtector;
import org.pgpainless.signature.builder.CertificationSignatureBuilder;
import org.pgpainless.signature.builder.DirectKeySignatureBuilder;
public class ProofUtil {
public PGPSecretKeyRing addProof(PGPSecretKeyRing secretKey, SecretKeyRingProtector protector, Proof proof)
throws PGPException {
return addProofs(secretKey, protector, Collections.singletonList(proof));
}
public PGPSecretKeyRing addProofs(PGPSecretKeyRing secretKey, SecretKeyRingProtector protector, List<Proof> proofs)
throws PGPException {
KeyRingInfo info = PGPainless.inspectKeyRing(secretKey);
return addProofs(secretKey, protector, info.getPrimaryUserId(), proofs);
}
public PGPSecretKeyRing addProof(PGPSecretKeyRing secretKey, SecretKeyRingProtector protector, String userId, Proof proof)
throws PGPException {
return addProofs(secretKey, protector, userId, Collections.singletonList(proof));
}
public PGPSecretKeyRing addProofs(PGPSecretKeyRing secretKey, SecretKeyRingProtector protector,
@Nullable String userId, List<Proof> proofs)
throws PGPException {
KeyRingInfo info = PGPainless.inspectKeyRing(secretKey);
PGPSecretKey certificationKey = secretKey.getSecretKey();
PGPPublicKey certificationPubKey = certificationKey.getPublicKey();
PGPSignature certification = null;
// null userid -> make direct key sig
if (userId == null) {
PGPSignature previousCertification = info.getLatestDirectKeySelfSignature();
if (previousCertification == null) {
throw new NoSuchElementException("No previous valid direct key signature found.");
}
DirectKeySignatureBuilder sigBuilder = new DirectKeySignatureBuilder(certificationKey, protector, previousCertification);
for (Proof proof : proofs) {
sigBuilder.getHashedSubpackets().addNotationData(false, proof.getNotationName(), proof.getNotationValue());
}
certification = sigBuilder.build(certificationPubKey);
certificationPubKey = PGPPublicKey.addCertification(certificationPubKey, certification);
} else {
if (!info.isUserIdValid(userId)) {
throw new IllegalArgumentException("User ID " + userId + " seems to not be valid for this key.");
}
PGPSignature previousCertification = info.getLatestUserIdCertification(userId);
if (previousCertification == null) {
throw new NoSuchElementException("No previous valid user-id certification found.");
}
CertificationSignatureBuilder sigBuilder = new CertificationSignatureBuilder(certificationKey, protector, previousCertification);
for (Proof proof : proofs) {
sigBuilder.getHashedSubpackets().addNotationData(false, proof.getNotationName(), proof.getNotationValue());
}
certification = sigBuilder.build(certificationPubKey, userId);
certificationPubKey = PGPPublicKey.addCertification(certificationPubKey, userId, certification);
}
certificationKey = PGPSecretKey.replacePublicKey(certificationKey, certificationPubKey);
secretKey = PGPSecretKeyRing.insertSecretKey(secretKey, certificationKey);
return secretKey;
}
public static class Proof {
public static final String NOTATION_NAME = "proof@metacode.biz";
private final String notationValue;
public Proof(String notationValue) {
if (notationValue == null) {
throw new IllegalArgumentException("Notation value cannot be null.");
}
String trimmed = notationValue.trim();
if (trimmed.isEmpty()) {
throw new IllegalArgumentException("Notation value cannot be empty.");
}
this.notationValue = trimmed;
}
public String getNotationName() {
return NOTATION_NAME;
}
public String getNotationValue() {
return notationValue;
}
public static Proof fromMatrixPermalink(String username, String eventPermalink) {
Pattern pattern = Pattern.compile("^https:\\/\\/matrix\\.to\\/#\\/(![a-zA-Z]{18}:matrix\\.org)\\/(\\$[a-zA-Z0-9\\-_]{43})\\?via=.*$");
Matcher matcher = pattern.matcher(eventPermalink);
if (!matcher.matches()) {
throw new IllegalArgumentException("Invalid matrix event permalink.");
}
String roomId = matcher.group(1);
String eventId = matcher.group(2);
return new Proof(String.format("matrix:u/%s?org.keyoxide.r=%s&org.keyoxide.e=%s", username, roomId, eventId));
}
@Override
public String toString() {
return getNotationName() + "=" + getNotationValue();
}
}
public static List<Proof> getProofs(PGPSignature signature) {
PGPSignatureSubpacketVector hashedSubpackets = signature.getHashedSubPackets();
NotationData[] notations = hashedSubpackets.getNotationDataOccurrences();
List<Proof> proofs = new ArrayList<>();
for (NotationData notation : notations) {
if (notation.getNotationName().equals(Proof.NOTATION_NAME)) {
proofs.add(new Proof(notation.getNotationValue()));
}
}
return proofs;
}
}

15
pgpainless-core/src/main/java/org/pgpainless/signature/builder/AbstractSignatureBuilder.java
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@ -10,6 +10,7 @@ import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPPrivateKey;
import org.bouncycastle.openpgp.PGPPublicKey;
import org.bouncycastle.openpgp.PGPSecretKey;
import org.bouncycastle.openpgp.PGPSignature;
import org.bouncycastle.openpgp.PGPSignatureGenerator;
import org.pgpainless.PGPainless;
import org.pgpainless.algorithm.HashAlgorithm;
@ -46,6 +47,20 @@ public abstract class AbstractSignatureBuilder<B extends AbstractSignatureBuilde
hashedSubpackets = new SignatureSubpacketGeneratorWrapper(publicSigningKey);
}
public AbstractSignatureBuilder(PGPSecretKey certificationKey, SecretKeyRingProtector protector, PGPSignature archetypeSignature) throws WrongPassphraseException {
SignatureType type = SignatureType.valueOf(archetypeSignature.getSignatureType());
if (!isValidSignatureType(type)) {
throw new IllegalArgumentException("Invalid signature type.");
}
this.signatureType = SignatureType.valueOf(archetypeSignature.getSignatureType());
this.privateSigningKey = UnlockSecretKey.unlockSecretKey(certificationKey, protector);
this.publicSigningKey = certificationKey.getPublicKey();
this.hashAlgorithm = negotiateHashAlgorithm(publicSigningKey);
unhashedSubpackets = new SignatureSubpacketGeneratorWrapper(archetypeSignature.getUnhashedSubPackets());
hashedSubpackets = new SignatureSubpacketGeneratorWrapper(publicSigningKey, archetypeSignature.getHashedSubPackets());
}
protected HashAlgorithm negotiateHashAlgorithm(PGPPublicKey publicKey) {
Set<HashAlgorithm> hashAlgorithmPreferences = OpenPgpKeyAttributeUtil.getOrGuessPreferredHashAlgorithms(publicKey);
return HashAlgorithmNegotiator.negotiateSignatureHashAlgorithm(PGPainless.getPolicy())

19
pgpainless-core/src/main/java/org/pgpainless/signature/builder/CertificationSignatureBuilder.java
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@ -4,6 +4,8 @@
package org.pgpainless.signature.builder;
import javax.annotation.Nonnull;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPPublicKey;
import org.bouncycastle.openpgp.PGPSecretKey;
@ -12,6 +14,7 @@ import org.bouncycastle.openpgp.PGPUserAttributeSubpacketVector;
import org.pgpainless.algorithm.SignatureType;
import org.pgpainless.exception.WrongPassphraseException;
import org.pgpainless.key.protection.SecretKeyRingProtector;
import org.pgpainless.signature.subpackets.SelfSignatureSubpackets;
public class CertificationSignatureBuilder extends AbstractSignatureBuilder<CertificationSignatureBuilder> {
@ -19,6 +22,18 @@ public class CertificationSignatureBuilder extends AbstractSignatureBuilder<Cert
super(SignatureType.GENERIC_CERTIFICATION, certificationKey, protector);
}
public CertificationSignatureBuilder(PGPSecretKey certificationKey, SecretKeyRingProtector protector, PGPSignature archetypeSignature) throws WrongPassphraseException {
super(certificationKey, protector, archetypeSignature);
}
public SelfSignatureSubpackets getHashedSubpackets() {
return hashedSubpackets;
}
public SelfSignatureSubpackets getUnhashedSubpackets() {
return unhashedSubpackets;
}
public PGPSignature build(PGPPublicKey certifiedKey, String userId) throws PGPException {
return buildAndInitSignatureGenerator().generateCertification(userId, certifiedKey);
}
@ -28,8 +43,8 @@ public class CertificationSignatureBuilder extends AbstractSignatureBuilder<Cert
}
@Override
protected boolean isValidSignatureType(SignatureType type) {
switch (signatureType) {
protected boolean isValidSignatureType(@Nonnull SignatureType type) {
switch (type) {
case GENERIC_CERTIFICATION:
case NO_CERTIFICATION:
case CASUAL_CERTIFICATION:

43
pgpainless-core/src/main/java/org/pgpainless/signature/builder/DirectKeySignatureBuilder.java Normal file
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@ -0,0 +1,43 @@
// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.signature.builder;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPPublicKey;
import org.bouncycastle.openpgp.PGPSecretKey;
import org.bouncycastle.openpgp.PGPSignature;
import org.pgpainless.algorithm.SignatureType;
import org.pgpainless.exception.WrongPassphraseException;
import org.pgpainless.key.protection.SecretKeyRingProtector;
import org.pgpainless.signature.subpackets.SelfSignatureSubpackets;
public class DirectKeySignatureBuilder extends AbstractSignatureBuilder<DirectKeySignatureBuilder> {
public DirectKeySignatureBuilder(PGPSecretKey certificationKey, SecretKeyRingProtector protector, PGPSignature archetypeSignature) throws WrongPassphraseException {
super(certificationKey, protector, archetypeSignature);
}
public DirectKeySignatureBuilder(SignatureType signatureType, PGPSecretKey signingKey, SecretKeyRingProtector protector) throws WrongPassphraseException {
super(signatureType, signingKey, protector);
}
public SelfSignatureSubpackets getHashedSubpackets() {
return hashedSubpackets;
}
public SelfSignatureSubpackets getUnhashedSubpackets() {
return unhashedSubpackets;
}
public PGPSignature build(PGPPublicKey key) throws PGPException {
return buildAndInitSignatureGenerator()
.generateCertification(key);
}
@Override
protected boolean isValidSignatureType(SignatureType type) {
return type == SignatureType.DIRECT_KEY;
}
}

2
pgpainless-core/src/main/java/org/pgpainless/signature/subpackets/BaseSignatureSubpackets.java
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@ -64,6 +64,8 @@ public interface BaseSignatureSubpackets {
SignatureSubpacketGeneratorWrapper addNotationData(boolean isCritical, @Nonnull String notationName, @Nonnull String notationValue);
SignatureSubpacketGeneratorWrapper addNotationData(boolean isCritical, boolean isHumanReadable, @Nonnull String notationName, @Nonnull String notationValue);
SignatureSubpacketGeneratorWrapper addNotationData(@Nonnull NotationData notationData);
SignatureSubpacketGeneratorWrapper clearNotationData();

122
pgpainless-core/src/main/java/org/pgpainless/signature/subpackets/SignatureSubpacketGeneratorWrapper.java
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@ -39,6 +39,7 @@ import org.bouncycastle.bcpg.sig.TrustSignature;
import org.bouncycastle.openpgp.PGPPublicKey;
import org.bouncycastle.openpgp.PGPSignature;
import org.bouncycastle.openpgp.PGPSignatureSubpacketGenerator;
import org.bouncycastle.openpgp.PGPSignatureSubpacketVector;
import org.pgpainless.algorithm.CompressionAlgorithm;
import org.pgpainless.algorithm.Feature;
import org.pgpainless.algorithm.HashAlgorithm;
@ -71,16 +72,125 @@ public class SignatureSubpacketGeneratorWrapper
private PrimaryUserID primaryUserId;
private Revocable revocable;
private RevocationReason revocationReason;
private final List<SignatureSubpacket> unsupportedSubpackets = new ArrayList<>();
public SignatureSubpacketGeneratorWrapper() {
setSignatureCreationTime(new Date());
}
public SignatureSubpacketGeneratorWrapper(PGPPublicKey issuer) {
this();
setSignatureCreationTime(new Date());
setIssuerFingerprintAndKeyId(issuer);
}
public SignatureSubpacketGeneratorWrapper(PGPPublicKey issuer, PGPSignatureSubpacketVector base) {
extractSubpacketsFromVector(base);
setSignatureCreationTime(new Date());
setIssuerFingerprintAndKeyId(issuer);
}
public SignatureSubpacketGeneratorWrapper(PGPSignatureSubpacketVector base) {
extractSubpacketsFromVector(base);
setSignatureCreationTime(new Date());
}
private void extractSubpacketsFromVector(PGPSignatureSubpacketVector base) {
for (SignatureSubpacket subpacket : base.toArray()) {
org.pgpainless.algorithm.SignatureSubpacket type = org.pgpainless.algorithm.SignatureSubpacket.fromCode(subpacket.getType());
switch (type) {
case signatureCreationTime:
case issuerKeyId:
case issuerFingerprint:
// ignore, we override this anyways
break;
case signatureExpirationTime:
SignatureExpirationTime sigExpTime = (SignatureExpirationTime) subpacket;
setSignatureExpirationTime(sigExpTime.isCritical(), sigExpTime.getTime());
break;
case exportableCertification:
Exportable exp = (Exportable) subpacket;
setExportable(exp.isCritical(), exp.isExportable());
break;
case trustSignature:
TrustSignature trustSignature = (TrustSignature) subpacket;
setTrust(trustSignature.isCritical(), trustSignature.getDepth(), trustSignature.getTrustAmount());
break;
case revocable:
Revocable rev = (Revocable) subpacket;
setRevocable(rev.isCritical(), rev.isRevocable());
break;
case keyExpirationTime:
KeyExpirationTime keyExpTime = (KeyExpirationTime) subpacket;
setKeyExpirationTime(keyExpTime.isCritical(), keyExpTime.getTime());
break;
case preferredSymmetricAlgorithms:
setPreferredSymmetricKeyAlgorithms((PreferredAlgorithms) subpacket);
break;
case revocationKey:
RevocationKey revocationKey = (RevocationKey) subpacket;
addRevocationKey(revocationKey);
break;
case notationData:
NotationData notationData = (NotationData) subpacket;
addNotationData(notationData.isCritical(), notationData.getNotationName(), notationData.getNotationValue());
break;
case preferredHashAlgorithms:
setPreferredHashAlgorithms((PreferredAlgorithms) subpacket);
break;
case preferredCompressionAlgorithms:
setPreferredCompressionAlgorithms((PreferredAlgorithms) subpacket);
break;
case primaryUserId:
PrimaryUserID primaryUserID = (PrimaryUserID) subpacket;
setPrimaryUserId(primaryUserID);
break;
case keyFlags:
KeyFlags flags = (KeyFlags) subpacket;
setKeyFlags(flags.isCritical(), KeyFlag.fromBitmask(flags.getFlags()).toArray(new KeyFlag[0]));
break;
case signerUserId:
SignerUserID signerUserID = (SignerUserID) subpacket;
setSignerUserId(signerUserID.isCritical(), signerUserID.getID());
break;
case revocationReason:
RevocationReason reason = (RevocationReason) subpacket;
setRevocationReason(reason.isCritical(),
RevocationAttributes.Reason.fromCode(reason.getRevocationReason()),
reason.getRevocationDescription());
break;
case features:
Features f = (Features) subpacket;
setFeatures(f.isCritical(), Feature.fromBitmask(f.getData()[0]).toArray(new Feature[0]));
break;
case signatureTarget:
SignatureTarget target = (SignatureTarget) subpacket;
setSignatureTarget(target.isCritical(),
PublicKeyAlgorithm.fromId(target.getPublicKeyAlgorithm()),
HashAlgorithm.fromId(target.getHashAlgorithm()),
target.getHashData());
break;
case embeddedSignature:
EmbeddedSignature embeddedSignature = (EmbeddedSignature) subpacket;
addEmbeddedSignature(embeddedSignature);
break;
case intendedRecipientFingerprint:
IntendedRecipientFingerprint intendedRecipientFingerprint = (IntendedRecipientFingerprint) subpacket;
addIntendedRecipientFingerprint(intendedRecipientFingerprint);
break;
case regularExpression:
case keyServerPreferences:
case preferredKeyServers:
case policyUrl:
case placeholder:
case preferredAEADAlgorithms:
case attestedCertification:
unsupportedSubpackets.add(subpacket);
break;
}
}
}
public PGPSignatureSubpacketGenerator getGenerator() {
PGPSignatureSubpacketGenerator generator = new PGPSignatureSubpacketGenerator();
@ -113,6 +223,9 @@ public class SignatureSubpacketGeneratorWrapper
addSubpacket(generator, primaryUserId);
addSubpacket(generator, revocable);
addSubpacket(generator, revocationReason);
for (SignatureSubpacket subpacket : unsupportedSubpackets) {
addSubpacket(generator, subpacket);
}
return generator;
}
@ -381,7 +494,12 @@ public class SignatureSubpacketGeneratorWrapper
@Override
public SignatureSubpacketGeneratorWrapper addNotationData(boolean isCritical, @Nonnull String notationName, @Nonnull String notationValue) {
return addNotationData(new NotationData(isCritical, true, notationName, notationValue));
return addNotationData(isCritical, true, notationName, notationValue);
}
@Override
public SignatureSubpacketGeneratorWrapper addNotationData(boolean isCritical, boolean isHumanReadable, @Nonnull String notationName, @Nonnull String notationValue) {
return addNotationData(new NotationData(isCritical, isHumanReadable, notationName, notationValue));
}
@Override

75
pgpainless-core/src/test/java/org/pgpainless/signature/builder/ProofUtilTest.java Normal file
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@ -0,0 +1,75 @@
// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.signature.builder;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertThrows;
import java.io.IOException;
import java.security.InvalidAlgorithmParameterException;
import java.security.NoSuchAlgorithmException;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPSecretKeyRing;
import org.bouncycastle.openpgp.PGPSignature;
import org.junit.jupiter.api.Test;
import org.pgpainless.PGPainless;
import org.pgpainless.key.info.KeyRingInfo;
import org.pgpainless.key.protection.SecretKeyRingProtector;
import org.pgpainless.signature.ProofUtil;
public class ProofUtilTest {
@Test
public void testEmptyProofThrows() {
assertThrows(IllegalArgumentException.class, () -> new ProofUtil.Proof(""));
}
@Test
public void testNullProofThrows() {
assertThrows(IllegalArgumentException.class, () -> new ProofUtil.Proof(null));
}
@Test
public void proofIsTrimmed() {
ProofUtil.Proof proof = new ProofUtil.Proof(" foo:bar ");
assertEquals("proof@metacode.biz=foo:bar", proof.toString());
}
@Test
public void testMatrixProof() {
String matrixUser = "@foo:matrix.org";
String permalink = "https://matrix.to/#/!dBfQZxCoGVmSTujfiv:matrix.org/$3dVX1nv3lmwnKxc0mgto_Sf-REVr45Z6G7LWLWal10w?via=chat.matrix.org";
ProofUtil.Proof proof = ProofUtil.Proof.fromMatrixPermalink(matrixUser, permalink);
assertEquals("proof@metacode.biz=matrix:u/@foo:matrix.org?org.keyoxide.r=!dBfQZxCoGVmSTujfiv:matrix.org&org.keyoxide.e=$3dVX1nv3lmwnKxc0mgto_Sf-REVr45Z6G7LWLWal10w",
proof.toString());
}
@Test
public void testXmppBasicProof() {
String jid = "alice@pgpainless.org";
ProofUtil.Proof proof = new ProofUtil.Proof("xmpp:" + jid);
assertEquals("proof@metacode.biz=xmpp:alice@pgpainless.org", proof.toString());
}
@Test
public void testAddProof() throws PGPException, InvalidAlgorithmParameterException, NoSuchAlgorithmException, IOException, InterruptedException {
String userId = "Alice <alice@pgpainless.org>";
PGPSecretKeyRing secretKey = PGPainless.generateKeyRing()
.modernKeyRing(userId, null);
Thread.sleep(1000L);
secretKey = new ProofUtil()
.addProof(secretKey, SecretKeyRingProtector.unprotectedKeys(), new ProofUtil.Proof("xmpp:alice@pgpainless.org"));
KeyRingInfo info = PGPainless.inspectKeyRing(secretKey);
PGPSignature signature = info.getLatestUserIdCertification(userId);
assertNotNull(signature);
assertFalse(ProofUtil.getProofs(signature).isEmpty());
}
}

56
pgpainless-core/src/test/java/org/pgpainless/signature/builder/SubkeyBindingSignatureBuilderTest.java Normal file
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@ -0,0 +1,56 @@
// SPDX-FileCopyrightText: 2021 Paul Schaub <vanitasvitae@fsfe.org>
//
// SPDX-License-Identifier: Apache-2.0
package org.pgpainless.signature.builder;
import static org.junit.jupiter.api.Assertions.assertEquals;
import java.io.IOException;
import java.security.InvalidAlgorithmParameterException;
import java.security.NoSuchAlgorithmException;
import java.util.List;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPPublicKey;
import org.bouncycastle.openpgp.PGPSecretKey;
import org.bouncycastle.openpgp.PGPSecretKeyRing;
import org.bouncycastle.openpgp.PGPSignature;
import org.junit.jupiter.api.Test;
import org.pgpainless.PGPainless;
import org.pgpainless.algorithm.EncryptionPurpose;
import org.pgpainless.algorithm.KeyFlag;
import org.pgpainless.algorithm.SignatureType;
import org.pgpainless.key.info.KeyRingInfo;
import org.pgpainless.key.protection.SecretKeyRingProtector;
import org.pgpainless.util.Passphrase;
public class SubkeyBindingSignatureBuilderTest {
@Test
public void testBindSubkeyWithCustomNotation() throws PGPException, InvalidAlgorithmParameterException, NoSuchAlgorithmException, IOException {
PGPSecretKeyRing secretKey = PGPainless.generateKeyRing()
.modernKeyRing("Alice <alice@pgpainless.org>", "passphrase");
KeyRingInfo info = PGPainless.inspectKeyRing(secretKey);
List<PGPPublicKey> previousSubkeys = info.getEncryptionSubkeys(EncryptionPurpose.STORAGE_AND_COMMUNICATIONS);
SecretKeyRingProtector protector = SecretKeyRingProtector.unlockAllKeysWith(Passphrase.fromPassword("passphrase"), secretKey);
PGPSecretKeyRing tempSubkeyRing = PGPainless.generateKeyRing()
.modernKeyRing("Subkeys", null);
PGPPublicKey subkey = PGPainless.inspectKeyRing(tempSubkeyRing)
.getEncryptionSubkeys(EncryptionPurpose.STORAGE_AND_COMMUNICATIONS).get(0);
SubkeyBindingSignatureBuilder skbb = new SubkeyBindingSignatureBuilder(SignatureType.SUBKEY_BINDING, secretKey.getSecretKey(), protector);
skbb.getHashedSubpackets().addNotationData(false, "testnotation@pgpainless.org", "hello-world");
skbb.getHashedSubpackets().setKeyFlags(KeyFlag.ENCRYPT_COMMS, KeyFlag.ENCRYPT_STORAGE);
PGPSignature binding = skbb.build(subkey);
subkey = PGPPublicKey.addCertification(subkey, binding);
PGPSecretKey secSubkey = tempSubkeyRing.getSecretKey(subkey.getKeyID());
secSubkey = PGPSecretKey.replacePublicKey(secSubkey, subkey);
secretKey = PGPSecretKeyRing.insertSecretKey(secretKey, secSubkey);
info = PGPainless.inspectKeyRing(secretKey);
List<PGPPublicKey> nextSubkeys = info.getEncryptionSubkeys(EncryptionPurpose.STORAGE_AND_COMMUNICATIONS);
assertEquals(previousSubkeys.size() + 1, nextSubkeys.size());
}
}