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open-keychain
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Code Issues Releases Wiki Activity

add support for certification of user attributes

This commit is contained in:
Vincent Breitmoser 2015-03-08 01:44:06 +01:00
parent 443feef27a
commit 30ca8637ff
5 changed files with 104 additions and 21 deletions
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26
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/CertifyOperation.java
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@ -101,18 +101,26 @@ public class CertifyOperation extends BaseOperation {
continue;
}
if (action.mUserIds == null) {
log.add(LogType.MSG_CRT_CERTIFY_ALL, 2,
KeyFormattingUtils.convertKeyIdToHex(action.mMasterKeyId));
} else {
log.add(LogType.MSG_CRT_CERTIFY_SOME, 2, action.mUserIds.size(),
KeyFormattingUtils.convertKeyIdToHex(action.mMasterKeyId));
}
CanonicalizedPublicKeyRing publicRing =
mProviderHelper.getCanonicalizedPublicKeyRing(action.mMasterKeyId);
UncachedKeyRing certifiedKey = certificationKey.certifyUserIds(publicRing, action.mUserIds, null, null);
UncachedKeyRing certifiedKey = null;
if (action.mUserIds != null) {
log.add(LogType.MSG_CRT_CERTIFY_UIDS, 2, action.mUserIds.size(),
KeyFormattingUtils.convertKeyIdToHex(action.mMasterKeyId));
certifiedKey = certificationKey.certifyUserIds(
publicRing, action.mUserIds, null, null);
}
if (action.mUserAttributes != null) {
log.add(LogType.MSG_CRT_CERTIFY_UATS, 2, action.mUserAttributes.size(),
KeyFormattingUtils.convertKeyIdToHex(action.mMasterKeyId));
certifiedKey = certificationKey.certifyUserAttributes(
publicRing, action.mUserAttributes, null, null);
}
if (certifiedKey == null) {
certifyError += 1;
log.add(LogType.MSG_CRT_WARN_CERT_FAILED, 3);

4
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/OperationResult.java
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@ -691,8 +691,8 @@ public abstract class OperationResult implements Parcelable {
MSG_PSE_SYMMETRIC (LogLevel.INFO, R.string.msg_pse_symmetric),
MSG_CRT_CERTIFYING (LogLevel.DEBUG, R.string.msg_crt_certifying),
MSG_CRT_CERTIFY_ALL (LogLevel.DEBUG, R.string.msg_crt_certify_all),
MSG_CRT_CERTIFY_SOME (LogLevel.DEBUG, R.plurals.msg_crt_certify_some),
MSG_CRT_CERTIFY_UIDS (LogLevel.DEBUG, R.plurals.msg_crt_certify_uids),
MSG_CRT_CERTIFY_UATS (LogLevel.DEBUG, R.plurals.msg_crt_certify_uats),
MSG_CRT_ERROR_SELF (LogLevel.ERROR, R.string.msg_crt_error_self),
MSG_CRT_ERROR_MASTER_NOT_FOUND (LogLevel.ERROR, R.string.msg_crt_error_master_not_found),
MSG_CRT_ERROR_NOTHING (LogLevel.ERROR, R.string.msg_crt_error_nothing),

72
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CanonicalizedSecretKey.java
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@ -30,6 +30,7 @@ import org.spongycastle.openpgp.PGPSignature;
import org.spongycastle.openpgp.PGPSignatureGenerator;
import org.spongycastle.openpgp.PGPSignatureSubpacketGenerator;
import org.spongycastle.openpgp.PGPSignatureSubpacketVector;
import org.spongycastle.openpgp.PGPUserAttributeSubpacketVector;
import org.spongycastle.openpgp.PGPUtil;
import org.spongycastle.openpgp.operator.PBESecretKeyDecryptor;
import org.spongycastle.openpgp.operator.PGPContentSignerBuilder;
@ -268,7 +269,7 @@ public class CanonicalizedSecretKey extends CanonicalizedPublicKey {
* Certify the given pubkeyid with the given masterkeyid.
*
* @param publicKeyRing Keyring to add certification to.
* @param userIds User IDs to certify, or all if null
* @param userIds User IDs to certify
* @return A keyring with added certifications
*/
public UncachedKeyRing certifyUserIds(CanonicalizedPublicKeyRing publicKeyRing, List<String> userIds,
@ -313,10 +314,8 @@ public class CanonicalizedSecretKey extends CanonicalizedPublicKey {
PGPPublicKey publicKey = publicKeyRing.getPublicKey().getPublicKey();
// fetch public key ring, add the certification and return it
Iterable<String> it = userIds != null ? userIds
: new IterableIterator<String>(publicKey.getUserIDs());
try {
for (String userId : it) {
for (String userId : userIds) {
PGPSignature sig = signatureGenerator.generateCertification(userId, publicKey);
publicKey = PGPPublicKey.addCertification(publicKey, userId, sig);
}
@ -330,6 +329,71 @@ public class CanonicalizedSecretKey extends CanonicalizedPublicKey {
return new UncachedKeyRing(ring);
}
/**
* Certify the given user attributes with the given masterkeyid.
*
* @param publicKeyRing Keyring to add certification to.
* @param userAttributes User IDs to certify, or all if null
* @return A keyring with added certifications
*/
public UncachedKeyRing certifyUserAttributes(CanonicalizedPublicKeyRing publicKeyRing,
List<WrappedUserAttribute> userAttributes, byte[] nfcSignedHash, Date nfcCreationTimestamp) {
if (mPrivateKeyState == PRIVATE_KEY_STATE_LOCKED) {
throw new PrivateKeyNotUnlockedException();
}
if (!isMasterKey()) {
throw new AssertionError("tried to certify with non-master key, this is a programming error!");
}
if (publicKeyRing.getMasterKeyId() == getKeyId()) {
throw new AssertionError("key tried to self-certify, this is a programming error!");
}
// create a signatureGenerator from the supplied masterKeyId and passphrase
PGPSignatureGenerator signatureGenerator;
{
// TODO: SHA256 fixed?
PGPContentSignerBuilder contentSignerBuilder = getContentSignerBuilder(PGPUtil.SHA256,
nfcSignedHash, nfcCreationTimestamp);
signatureGenerator = new PGPSignatureGenerator(contentSignerBuilder);
try {
signatureGenerator.init(PGPSignature.DEFAULT_CERTIFICATION, mPrivateKey);
} catch (PGPException e) {
Log.e(Constants.TAG, "signing error", e);
return null;
}
}
{ // supply signatureGenerator with a SubpacketVector
PGPSignatureSubpacketGenerator spGen = new PGPSignatureSubpacketGenerator();
if (nfcCreationTimestamp != null) {
spGen.setSignatureCreationTime(false, nfcCreationTimestamp);
Log.d(Constants.TAG, "For NFC: set sig creation time to " + nfcCreationTimestamp);
}
PGPSignatureSubpacketVector packetVector = spGen.generate();
signatureGenerator.setHashedSubpackets(packetVector);
}
// get the master subkey (which we certify for)
PGPPublicKey publicKey = publicKeyRing.getPublicKey().getPublicKey();
// fetch public key ring, add the certification and return it
try {
for (WrappedUserAttribute userAttribute : userAttributes) {
PGPUserAttributeSubpacketVector vector = userAttribute.getVector();
PGPSignature sig = signatureGenerator.generateCertification(vector, publicKey);
publicKey = PGPPublicKey.addCertification(publicKey, vector, sig);
}
} catch (PGPException e) {
Log.e(Constants.TAG, "signing error", e);
return null;
}
PGPPublicKeyRing ring = PGPPublicKeyRing.insertPublicKey(publicKeyRing.getRing(), publicKey);
return new UncachedKeyRing(ring);
}
static class PrivateKeyNotUnlockedException extends RuntimeException {
// this exception is a programming error which happens when an operation which requires
// the private key is called without a previous call to unlock()

16
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/CertifyActionsParcel.java
View File

@ -24,6 +24,9 @@ import android.os.Parcelable;
import java.io.Serializable;
import java.util.ArrayList;
import org.sufficientlysecure.keychain.pgp.WrappedUserAttribute;
/**
* This class is a a transferable representation for a number of keyrings to
* be certified.
@ -76,14 +79,19 @@ public class CertifyActionsParcel implements Parcelable {
final public long mMasterKeyId;
final public ArrayList<String> mUserIds;
public CertifyAction(long masterKeyId) {
this(masterKeyId, null);
}
final public ArrayList<WrappedUserAttribute> mUserAttributes;
public CertifyAction(long masterKeyId, ArrayList<String> userIds) {
mMasterKeyId = masterKeyId;
mUserIds = userIds;
mUserAttributes = null;
}
public CertifyAction(long masterKeyId, ArrayList<String> userIds,
ArrayList<WrappedUserAttribute> attributes) {
mMasterKeyId = masterKeyId;
mUserIds = userIds;
mUserAttributes = attributes;
}
}

7
OpenKeychain/src/main/res/values/strings.xml
View File

@ -1071,11 +1071,14 @@
<string name="msg_pse_symmetric">"Preparing symmetric encryption"</string>
<string name="msg_crt_certifying">"Generating certifications"</string>
<string name="msg_crt_certify_all">"Certifying all user IDs for key %s"</string>
<plurals name="msg_crt_certify_some">
<plurals name="msg_crt_certify_uids">
<item quantity="one">"Certifying one user ID for key %2$s"</item>
<item quantity="other">"Certifying %1$d user IDs for key %2$s"</item>
</plurals>
<plurals name="msg_crt_certify_uats">
<item quantity="one">"Certifying one user attribute for key %2$s"</item>
<item quantity="other">"Certifying %1$d user attributes for key %2$s"</item>
</plurals>
<string name="msg_crt_error_self">"Cannot issue self-certificate like this!"</string>
<string name="msg_crt_error_master_not_found">"Master key not found!"</string>
<string name="msg_crt_error_nothing">"No keys certified!"</string>