From c7b0b650c1467f7f0d7d8d62798c458597be0225 Mon Sep 17 00:00:00 2001 From: Vincent Breitmoser Date: Tue, 30 Dec 2014 00:44:12 +0100 Subject: introduce handling of notation direct key signatures, and experimental pin notation packet --- .../operations/results/OperationResult.java | 4 +- .../keychain/pgp/PgpKeyOperation.java | 49 ++++++++++++++++-- .../keychain/pgp/UncachedKeyRing.java | 59 ++++++++++++++++++---- .../keychain/pgp/WrappedSignature.java | 18 +++++++ 4 files changed, 115 insertions(+), 15 deletions(-) (limited to 'OpenKeychain/src/main/java/org/sufficientlysecure/keychain') diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/OperationResult.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/OperationResult.java index dc45fabc3..bf14a918b 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/OperationResult.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/OperationResult.java @@ -370,13 +370,15 @@ public abstract class OperationResult implements Parcelable { MSG_KC_ERROR_MASTER_ALGO (LogLevel.ERROR, R.string.msg_kc_error_master_algo), MSG_KC_ERROR_DUP_KEY (LogLevel.ERROR, R.string.msg_kc_error_dup_key), MSG_KC_MASTER (LogLevel.DEBUG, R.string.msg_kc_master), + MSG_KC_BAD_TYPE(LogLevel.WARN, R.string.msg_kc_bad_type), MSG_KC_REVOKE_BAD_ERR (LogLevel.WARN, R.string.msg_kc_revoke_bad_err), MSG_KC_REVOKE_BAD_LOCAL (LogLevel.WARN, R.string.msg_kc_revoke_bad_local), MSG_KC_REVOKE_BAD_TIME (LogLevel.WARN, R.string.msg_kc_revoke_bad_time), - MSG_KC_REVOKE_BAD_TYPE (LogLevel.WARN, R.string.msg_kc_revoke_bad_type), MSG_KC_REVOKE_BAD_TYPE_UID (LogLevel.WARN, R.string.msg_kc_revoke_bad_type_uid), MSG_KC_REVOKE_BAD (LogLevel.WARN, R.string.msg_kc_revoke_bad), MSG_KC_REVOKE_DUP (LogLevel.DEBUG, R.string.msg_kc_revoke_dup), + MSG_KC_NOTATION_DUP (LogLevel.DEBUG, R.string.msg_kc_notation_dup), + MSG_KC_NOTATION_EMPTY (LogLevel.DEBUG, R.string.msg_kc_notation_empty), MSG_KC_SUB (LogLevel.DEBUG, R.string.msg_kc_sub), MSG_KC_SUB_BAD(LogLevel.WARN, R.string.msg_kc_sub_bad), MSG_KC_SUB_BAD_ERR(LogLevel.WARN, R.string.msg_kc_sub_bad_err), diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpKeyOperation.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpKeyOperation.java index c125165a8..08d8164ca 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpKeyOperation.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpKeyOperation.java @@ -34,6 +34,7 @@ import org.spongycastle.openpgp.PGPSecretKeyRing; import org.spongycastle.openpgp.PGPSignature; import org.spongycastle.openpgp.PGPSignatureGenerator; import org.spongycastle.openpgp.PGPSignatureSubpacketGenerator; +import org.spongycastle.openpgp.PGPSignatureSubpacketVector; import org.spongycastle.openpgp.operator.PBESecretKeyDecryptor; import org.spongycastle.openpgp.operator.PBESecretKeyEncryptor; import org.spongycastle.openpgp.operator.PGPContentSignerBuilder; @@ -877,7 +878,8 @@ public class PgpKeyOperation { log.add(LogType.MSG_MF_PASSPHRASE, indent); indent += 1; - sKR = applyNewUnlock(sKR, masterPublicKey, passphrase, saveParcel.mNewUnlock, log, indent); + sKR = applyNewUnlock(sKR, masterPublicKey, masterPrivateKey, + passphrase, saveParcel.mNewUnlock, log, indent); if (sKR == null) { // The error has been logged above, just return a bad state return new EditKeyResult(EditKeyResult.RESULT_ERROR, log, null); @@ -909,19 +911,60 @@ public class PgpKeyOperation { private static PGPSecretKeyRing applyNewUnlock( PGPSecretKeyRing sKR, PGPPublicKey masterPublicKey, + PGPPrivateKey masterPrivateKey, String passphrase, ChangeUnlockParcel newUnlock, OperationLog log, int indent) throws PGPException { if (newUnlock.mNewPassphrase != null) { - return applyNewPassphrase(sKR, masterPublicKey, passphrase, newUnlock.mNewPassphrase, log, indent); + sKR = applyNewPassphrase(sKR, masterPublicKey, passphrase, newUnlock.mNewPassphrase, log, indent); + + // add packet with EMPTY notation data (updates old one, but will be stripped later) + PGPContentSignerBuilder signerBuilder = new JcaPGPContentSignerBuilder( + masterPrivateKey.getPublicKeyPacket().getAlgorithm(), HashAlgorithmTags.SHA512) + .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME); + PGPSignatureGenerator sGen = new PGPSignatureGenerator(signerBuilder); + { // set subpackets + PGPSignatureSubpacketGenerator hashedPacketsGen = new PGPSignatureSubpacketGenerator(); + hashedPacketsGen.setExportable(false, false); + sGen.setHashedSubpackets(hashedPacketsGen.generate()); + } + sGen.init(PGPSignature.DIRECT_KEY, masterPrivateKey); + PGPSignature emptySig = sGen.generateCertification(masterPublicKey); + + masterPublicKey = PGPPublicKey.addCertification(masterPublicKey, emptySig); + PGPSecretKey.replacePublicKey(sKR.getSecretKey(), masterPublicKey); + + return sKR; + } + + if (newUnlock.mNewPin != null) { + sKR = applyNewPassphrase(sKR, masterPublicKey, passphrase, newUnlock.mNewPin, log, indent); + + // add packet with EMPTY notation data (updates old one, but will be stripped later) + PGPContentSignerBuilder signerBuilder = new JcaPGPContentSignerBuilder( + masterPrivateKey.getPublicKeyPacket().getAlgorithm(), HashAlgorithmTags.SHA512) + .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME); + PGPSignatureGenerator sGen = new PGPSignatureGenerator(signerBuilder); + { // set subpackets + PGPSignatureSubpacketGenerator hashedPacketsGen = new PGPSignatureSubpacketGenerator(); + hashedPacketsGen.setExportable(false, false); + hashedPacketsGen.setNotationData(false, false, "pin@unlock.sufficientlysecure.org", "1"); + sGen.setHashedSubpackets(hashedPacketsGen.generate()); + } + sGen.init(PGPSignature.DIRECT_KEY, masterPrivateKey); + PGPSignature emptySig = sGen.generateCertification(masterPublicKey); + + masterPublicKey = PGPPublicKey.addCertification(masterPublicKey, emptySig); + PGPSecretKey.replacePublicKey(sKR.getSecretKey(), masterPublicKey); + + return sKR; } throw new UnsupportedOperationException("PIN passphrases not yet implemented!"); } - private static PGPSecretKeyRing applyNewPassphrase( PGPSecretKeyRing sKR, PGPPublicKey masterPublicKey, diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/UncachedKeyRing.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/UncachedKeyRing.java index b343c779a..8d1eaa40e 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/UncachedKeyRing.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/UncachedKeyRing.java @@ -41,7 +41,6 @@ import org.sufficientlysecure.keychain.util.IterableIterator; import org.sufficientlysecure.keychain.util.Log; import org.sufficientlysecure.keychain.util.Utf8Util; -import java.io.BufferedInputStream; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.IOException; @@ -302,6 +301,7 @@ public class UncachedKeyRing { PGPPublicKey modified = masterKey; PGPSignature revocation = null; + PGPSignature notation = null; for (PGPSignature zert : new IterableIterator(masterKey.getKeySignatures())) { int type = zert.getSignatureType(); @@ -318,9 +318,9 @@ public class UncachedKeyRing { } WrappedSignature cert = new WrappedSignature(zert); - if (type != PGPSignature.KEY_REVOCATION) { + if (type != PGPSignature.KEY_REVOCATION && type != PGPSignature.DIRECT_KEY) { // Unknown type, just remove - log.add(LogType.MSG_KC_REVOKE_BAD_TYPE, indent, "0x" + Integer.toString(type, 16)); + log.add(LogType.MSG_KC_BAD_TYPE, indent, "0x" + Integer.toString(type, 16)); modified = PGPPublicKey.removeCertification(modified, zert); badCerts += 1; continue; @@ -334,14 +334,6 @@ public class UncachedKeyRing { continue; } - if (cert.isLocal()) { - // Remove revocation certs with "local" flag - log.add(LogType.MSG_KC_REVOKE_BAD_LOCAL, indent); - modified = PGPPublicKey.removeCertification(modified, zert); - badCerts += 1; - continue; - } - try { cert.init(masterKey); if (!cert.verifySignature(masterKey)) { @@ -357,6 +349,41 @@ public class UncachedKeyRing { continue; } + if (cert.isLocal()) { + // Remove revocation certs with "local" flag + log.add(LogType.MSG_KC_REVOKE_BAD_LOCAL, indent); + modified = PGPPublicKey.removeCertification(modified, zert); + badCerts += 1; + continue; + } + + // special case: direct key signatures! + if (cert.getSignatureType() == PGPSignature.DIRECT_KEY) { + // must be local, otherwise strip! + if (!cert.isLocal()) { + log.add(LogType.MSG_KC_BAD_TYPE, indent); + modified = PGPPublicKey.removeCertification(modified, zert); + badCerts += 1; + continue; + } + + // first notation? fine then. + if (notation == null) { + notation = zert; + // more notations? at least one is superfluous, then. + } else if (notation.getCreationTime().before(zert.getCreationTime())) { + log.add(LogType.MSG_KC_NOTATION_DUP, indent); + modified = PGPPublicKey.removeCertification(modified, notation); + redundantCerts += 1; + notation = zert; + } else { + log.add(LogType.MSG_KC_NOTATION_DUP, indent); + modified = PGPPublicKey.removeCertification(modified, zert); + redundantCerts += 1; + } + continue; + } + // first revocation? fine then. if (revocation == null) { revocation = zert; @@ -373,6 +400,16 @@ public class UncachedKeyRing { } } + // If we have a notation packet, check if there is even any data in it? + if (notation != null) { + // If there isn't, might as well strip it + if (new WrappedSignature(notation).getNotation().isEmpty()) { + log.add(LogType.MSG_KC_NOTATION_EMPTY, indent); + modified = PGPPublicKey.removeCertification(modified, notation); + redundantCerts += 1; + } + } + ArrayList processedUserIds = new ArrayList(); for (byte[] rawUserId : new IterableIterator(masterKey.getRawUserIDs())) { String userId = Utf8Util.fromUTF8ByteArrayReplaceBadEncoding(rawUserId); diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/WrappedSignature.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/WrappedSignature.java index 93afb987a..132a28604 100644 --- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/WrappedSignature.java +++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/WrappedSignature.java @@ -21,6 +21,7 @@ package org.sufficientlysecure.keychain.pgp; import org.spongycastle.bcpg.SignatureSubpacket; import org.spongycastle.bcpg.SignatureSubpacketTags; import org.spongycastle.bcpg.sig.Exportable; +import org.spongycastle.bcpg.sig.NotationData; import org.spongycastle.bcpg.sig.Revocable; import org.spongycastle.bcpg.sig.RevocationReason; import org.spongycastle.openpgp.PGPException; @@ -37,6 +38,7 @@ import java.io.IOException; import java.security.SignatureException; import java.util.ArrayList; import java.util.Date; +import java.util.HashMap; /** OpenKeychain wrapper around PGPSignature objects. * @@ -239,4 +241,20 @@ public class WrappedSignature { SignatureSubpacket p = mSig.getHashedSubPackets().getSubpacket(SignatureSubpacketTags.EXPORTABLE); return ! ((Exportable) p).isExportable(); } + + public HashMap getNotation() { + HashMap result = new HashMap(); + + // If there is any notation data + if (mSig.getHashedSubPackets() != null + && mSig.getHashedSubPackets().hasSubpacket(SignatureSubpacketTags.NOTATION_DATA)) { + // Iterate over notation data + for (NotationData data : mSig.getHashedSubPackets().getNotationDataOccurrences()) { + result.put(data.getNotationName(), data.getNotationValueBytes()); + } + } + + return result; + } + } -- cgit v1.2.3