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package org.sufficientlysecure.keychain.pgp;
import org.spongycastle.bcpg.ArmoredOutputStream;
import org.spongycastle.openpgp.PGPObjectFactory;
import org.spongycastle.openpgp.PGPPublicKey;
import org.spongycastle.openpgp.PGPPublicKeyRing;
import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
import org.sufficientlysecure.keychain.util.IterableIterator;
import java.io.IOException;
import java.util.Iterator;
public class CanonicalizedPublicKeyRing extends CanonicalizedKeyRing {
private PGPPublicKeyRing mRing;
CanonicalizedPublicKeyRing(PGPPublicKeyRing ring, int verified) {
super(verified);
mRing = ring;
}
public CanonicalizedPublicKeyRing(byte[] blob, int verified) {
super(verified);
if(mRing == null) {
// get first object in block
PGPObjectFactory factory = new PGPObjectFactory(blob);
try {
Object obj = factory.nextObject();
if (! (obj instanceof PGPPublicKeyRing)) {
throw new RuntimeException("Error constructing CanonicalizedPublicKeyRing, should never happen!");
}
mRing = (PGPPublicKeyRing) obj;
if (factory.nextObject() != null) {
throw new RuntimeException("Encountered trailing data after keyring, should never happen!");
}
} catch (IOException e) {
throw new RuntimeException("IO Error constructing CanonicalizedPublicKeyRing, should never happen!");
}
}
}
PGPPublicKeyRing getRing() {
return mRing;
}
public void encode(ArmoredOutputStream stream) throws IOException {
getRing().encode(stream);
}
/** Getter that returns the subkey that should be used for signing. */
CanonicalizedPublicKey getEncryptionSubKey() throws PgpGeneralException {
PGPPublicKey key = getRing().getPublicKey(getEncryptId());
if(key != null) {
CanonicalizedPublicKey cKey = new CanonicalizedPublicKey(this, key);
if(!cKey.canEncrypt()) {
throw new PgpGeneralException("key error");
}
return cKey;
}
throw new PgpGeneralException("no encryption key available");
}
public IterableIterator<CanonicalizedPublicKey> publicKeyIterator() {
@SuppressWarnings("unchecked")
final Iterator<PGPPublicKey> it = getRing().getPublicKeys();
return new IterableIterator<CanonicalizedPublicKey>(new Iterator<CanonicalizedPublicKey>() {
@Override
public boolean hasNext() {
return it.hasNext();
}
@Override
public CanonicalizedPublicKey next() {
return new CanonicalizedPublicKey(CanonicalizedPublicKeyRing.this, it.next());
}
@Override
public void remove() {
it.remove();
}
});
}
}
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