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https://github.com/moparisthebest/open-keychain
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check primary bindings
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@ -33,7 +33,11 @@ import java.util.Iterator;
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import org.spongycastle.bcpg.ArmoredInputStream;
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import org.spongycastle.bcpg.ArmoredOutputStream;
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import org.spongycastle.bcpg.BCPGInputStream;
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import org.spongycastle.bcpg.BCPGOutputStream;
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import org.spongycastle.bcpg.SignaturePacket;
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import org.spongycastle.bcpg.SignatureSubpacket;
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import org.spongycastle.bcpg.SignatureSubpacketTags;
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import org.spongycastle.openpgp.PGPCompressedData;
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@ -892,7 +896,11 @@ public class PgpOperation {
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boolean sig_isok = signature.verify();
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//We should only do the next part if the singing key was a subkey - not the master key!
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//Now check binding signatures
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boolean subkeyBinding_isok = false;
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boolean tmp_subkeyBinding_isok = false;
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boolean primkeyBinding_isok = false;
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signatureKeyId = signature.getKeyID();
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String userId = null;
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PGPPublicKeyRing signKeyRing = ProviderHelper.getPGPPublicKeyRingByKeyId(mContext,
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@ -901,39 +909,46 @@ public class PgpOperation {
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if (signKeyRing != null) {
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mKey = PgpKeyHelper.getMasterKey(signKeyRing);
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}
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Iterator<PGPSignature> itr = signatureKey.getSignatures();
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if (signature.getKeyID() != mKey.getKeyID()) {
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Iterator<PGPSignature> itr = signatureKey.getSignatures();
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boolean subkeyBinding_isok = false;
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boolean tmp_subkeyBinding_isok = false;
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boolean primkeyBinding_isok = false;
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while (itr.hasNext()) { //what does gpg do if the subkey binding is wrong?
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//gpg has an invalid subkey binding error on key import I think, but doesn't shout
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//about keys without subkey signing. Can't get it to import a slightly broken one
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//either, so we will err on bad subkey binding here.
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PGPSignature sig = itr.next();
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if (sig.getKeyID() == mKey.getKeyID() && sig.getSignatureType() == PGPSignature.SUBKEY_BINDING) {
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//check and if ok, check primary key binding.
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sig.init(contentVerifierBuilderProvider, mKey);
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tmp_subkeyBinding_isok = sig.verifyCertification(mKey, signatureKey);
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if (tmp_subkeyBinding_isok)
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subkeyBinding_isok = true;
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if (tmp_subkeyBinding_isok) {
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PGPSignatureSubpacketVector hPkts = sig.getHashedSubPackets();
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PGPSignatureSubpacketVector uhPkts = sig.getUnhashedSubPackets();
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if (hPkts.hasSubpacket(SignatureSubpacketTags.EMBEDDED_SIGNATURE)) {
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SignatureSubpacket[] subsigpkts = hPkts.getSubpackets(SignatureSubpacketTags.EMBEDDED_SIGNATURE);
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PGPSignature[] vals = new PGPSignature[subsigpkts.length];
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for (int i = 0; i < subsigpkts.length; i++)
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{
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vals[i] = (PGPSignature)subsigpkts[i];
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}
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}
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if (uhPkts.hasSubpacket(SignatureSubpacketTags.EMBEDDED_SIGNATURE)) {
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subkeyBinding_isok = false;
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tmp_subkeyBinding_isok = false;
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primkeyBinding_isok = false;
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while (itr.hasNext()) { //what does gpg do if the subkey binding is wrong?
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//gpg has an invalid subkey binding error on key import I think, but doesn't shout
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//about keys without subkey signing. Can't get it to import a slightly broken one
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//either, so we will err on bad subkey binding here.
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PGPSignature sig = itr.next();
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if (sig.getKeyID() == mKey.getKeyID() && sig.getSignatureType() == PGPSignature.SUBKEY_BINDING) {
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//check and if ok, check primary key binding.
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sig.init(contentVerifierBuilderProvider, mKey);
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tmp_subkeyBinding_isok = sig.verifyCertification(mKey, signatureKey);
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if (tmp_subkeyBinding_isok)
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subkeyBinding_isok = true;
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if (tmp_subkeyBinding_isok) {
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PGPSignatureSubpacketVector hPkts = sig.getHashedSubPackets();
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PGPSignatureSubpacketVector uhPkts = sig.getUnhashedSubPackets();
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if (uhPkts.hasSubpacket(SignatureSubpacketTags.EMBEDDED_SIGNATURE)) {
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PGPSignatureList eSigList = uhPkts.getEmbeddedSignatures();
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for (int j = 0; j < eSigList.size(); ++j) {
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PGPSignature emSig = eSigList.get(j);
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emSig.init(contentVerifierBuilderProvider, signatureKey);
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primkeyBinding_isok = emSig.verifyCertification(mKey, signatureKey);
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if (primkeyBinding_isok)
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break;
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}
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}
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if (hPkts.hasSubpacket(SignatureSubpacketTags.EMBEDDED_SIGNATURE)) {
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}
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}
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}
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}
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} else { //if the key used to make the signature was the master key, no need to check binding sigs
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subkeyBinding_isok = true;
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primkeyBinding_isok = true;
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}
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returnData.putBoolean(KeychainIntentService.RESULT_SIGNATURE_SUCCESS, sig_isok & subkeyBinding_isok);
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returnData.putBoolean(KeychainIntentService.RESULT_SIGNATURE_SUCCESS, sig_isok & subkeyBinding_isok & primkeyBinding_isok);
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updateProgress(R.string.progress_done, 100, 100);
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return returnData;
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