122 lines
4.3 KiB
Java
122 lines
4.3 KiB
Java
/**
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*
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* Copyright 2018 Paul Schaub.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.ox;
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import java.io.IOException;
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import java.util.Collections;
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import org.jivesoftware.smackx.ox.store.definition.OpenPgpStore;
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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.PGPPublicKeyRingCollection;
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import org.bouncycastle.openpgp.PGPSecretKeyRing;
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import org.bouncycastle.openpgp.PGPSecretKeyRingCollection;
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import org.jxmpp.jid.BareJid;
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import org.pgpainless.key.OpenPgpV4Fingerprint;
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/**
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* This class acts as our own OpenPGP identity. It can be seen as a special view on the {@link OpenPgpStore}, giving
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* access to our own encryption keys etc.
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*/
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public class OpenPgpSelf extends OpenPgpContact {
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/**
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* Constructor.
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*
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* @param jid our own {@link BareJid}. This is needed to access our keys in the store.
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* @param store the store.
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*/
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OpenPgpSelf(BareJid jid, OpenPgpStore store) {
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super(jid, store);
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}
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/**
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* Return true, if we have a usable secret key available.
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* @return true if we have secret key, otherwise false.
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* @throws IOException IO is dangerous
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* @throws PGPException PGP is brittle
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*/
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public boolean hasSecretKeyAvailable() throws IOException, PGPException {
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return getSecretKeys() != null;
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}
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/**
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* Return a {@link PGPSecretKeyRingCollection} which contains all of our {@link PGPSecretKeyRing}s.
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* @return collection of our secret keys
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* @throws IOException IO is dangerous
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* @throws PGPException PGP is brittle
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*/
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public PGPSecretKeyRingCollection getSecretKeys() throws IOException, PGPException {
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return store.getSecretKeysOf(jid);
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}
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/**
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* Return the {@link PGPSecretKeyRing} which we will use to sign our messages.
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* @return signing key
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* @throws IOException IO is dangerous
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* @throws PGPException PGP is brittle
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*/
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public PGPSecretKeyRing getSigningKeyRing() throws IOException, PGPException {
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PGPSecretKeyRingCollection secretKeyRings = getSecretKeys();
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if (secretKeyRings == null) {
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return null;
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}
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PGPSecretKeyRing signingKeyRing = null;
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for (PGPSecretKeyRing ring : secretKeyRings) {
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if (signingKeyRing == null) {
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signingKeyRing = ring;
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continue;
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}
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if (ring.getPublicKey().getCreationTime().after(signingKeyRing.getPublicKey().getCreationTime())) {
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signingKeyRing = ring;
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}
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}
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return signingKeyRing;
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}
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/**
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* Return the {@link OpenPgpV4Fingerprint} of our signing key.
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* @return fingerprint of signing key
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* @throws IOException IO is dangerous
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* @throws PGPException PGP is brittle
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*/
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public OpenPgpV4Fingerprint getSigningKeyFingerprint() throws IOException, PGPException {
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PGPSecretKeyRing signingKeyRing = getSigningKeyRing();
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return signingKeyRing != null ? new OpenPgpV4Fingerprint(signingKeyRing.getPublicKey()) : null;
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}
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/**
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* Return a {@link PGPPublicKeyRingCollection} containing only the public keys belonging to our signing key ring.
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* TODO: Add support for public keys of other devices of the owner.
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*
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* @return public keys
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*
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* @throws IOException IO is dangerous.
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* @throws PGPException PGP is brittle.
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*/
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@Override
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public PGPPublicKeyRingCollection getAnnouncedPublicKeys() throws IOException, PGPException {
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PGPSecretKeyRing secretKeys = getSigningKeyRing();
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PGPPublicKeyRing publicKeys = getAnyPublicKeys().getPublicKeyRing(secretKeys.getPublicKey().getKeyID());
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return new PGPPublicKeyRingCollection(Collections.singleton(publicKeys));
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}
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}
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