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Code Issues Releases Wiki Activity

Merge pull request #1278 from josecastillo/nfckeytocard

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Support for moving RSA keys to Yubikey or NFC smart card
This commit is contained in:
Vincent 2015-05-15 12:42:42 +02:00
commit 5f6421e82b
29 changed files with 732 additions and 78 deletions
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59
OpenKeychain-Test/src/test/java/org/sufficientlysecure/keychain/pgp/PgpKeyOperationTest.java
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@ -50,6 +50,7 @@ import org.sufficientlysecure.keychain.service.SaveKeyringParcel.ChangeUnlockPar
import org.sufficientlysecure.keychain.service.SaveKeyringParcel.SubkeyAdd;
import org.sufficientlysecure.keychain.service.SaveKeyringParcel.SubkeyChange;
import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
import org.sufficientlysecure.keychain.service.input.RequiredInputParcel.RequiredInputType;
import org.sufficientlysecure.keychain.support.KeyringBuilder;
import org.sufficientlysecure.keychain.support.KeyringTestingHelper;
import org.sufficientlysecure.keychain.support.KeyringTestingHelper.RawPacket;
@ -95,7 +96,7 @@ public class PgpKeyOperationTest {
parcel.mAddSubKeys.add(new SaveKeyringParcel.SubkeyAdd(
Algorithm.DSA, 1024, null, KeyFlags.SIGN_DATA, 0L));
parcel.mAddSubKeys.add(new SaveKeyringParcel.SubkeyAdd(
Algorithm.ELGAMAL, 1024, null, KeyFlags.ENCRYPT_COMMS, 0L));
Algorithm.RSA, 2048, null, KeyFlags.ENCRYPT_COMMS, 0L));
parcel.mAddUserIds.add("twi");
parcel.mAddUserIds.add("pink");
@ -735,7 +736,7 @@ public class PgpKeyOperationTest {
public void testSubkeyStrip() throws Exception {
long keyId = KeyringTestingHelper.getSubkeyId(ring, 1);
parcel.mChangeSubKeys.add(new SubkeyChange(keyId, true, null));
parcel.mChangeSubKeys.add(new SubkeyChange(keyId, true, false));
applyModificationWithChecks(parcel, ring, onlyA, onlyB);
Assert.assertEquals("one extra packet in original", 1, onlyA.size());
@ -761,7 +762,7 @@ public class PgpKeyOperationTest {
public void testMasterStrip() throws Exception {
long keyId = ring.getMasterKeyId();
parcel.mChangeSubKeys.add(new SubkeyChange(keyId, true, null));
parcel.mChangeSubKeys.add(new SubkeyChange(keyId, true, false));
applyModificationWithChecks(parcel, ring, onlyA, onlyB);
Assert.assertEquals("one extra packet in original", 1, onlyA.size());
@ -788,9 +789,9 @@ public class PgpKeyOperationTest {
long keyId = KeyringTestingHelper.getSubkeyId(ring, 1);
UncachedKeyRing modified;
{ // we should be able to change the stripped/divert status of subkeys without passphrase
{ // we should be able to change the stripped status of subkeys without passphrase
parcel.reset();
parcel.mChangeSubKeys.add(new SubkeyChange(keyId, true, null));
parcel.mChangeSubKeys.add(new SubkeyChange(keyId, true, false));
modified = applyModificationWithChecks(parcel, ring, onlyA, onlyB, new CryptoInputParcel());
Assert.assertEquals("one extra packet in modified", 1, onlyB.size());
Packet p = new BCPGInputStream(new ByteArrayInputStream(onlyB.get(0).buf)).readPacket();
@ -799,15 +800,57 @@ public class PgpKeyOperationTest {
Assert.assertEquals("new packet should have GNU_DUMMY protection mode stripped",
S2K.GNU_PROTECTION_MODE_NO_PRIVATE_KEY, ((SecretKeyPacket) p).getS2K().getProtectionMode());
}
}
{ // and again, changing to divert-to-card
@Test
public void testKeyToCard() throws Exception {
UncachedKeyRing modified;
{ // keytocard should fail with BAD_NFC_SIZE when presented with the RSA-1024 key
long keyId = KeyringTestingHelper.getSubkeyId(ring, 0);
parcel.reset();
parcel.mChangeSubKeys.add(new SubkeyChange(keyId, false, true));
assertModifyFailure("keytocard operation should fail on invalid key size", ring,
parcel, cryptoInput, LogType.MSG_MF_ERROR_BAD_NFC_SIZE);
}
{ // keytocard should fail with BAD_NFC_ALGO when presented with the DSA-1024 key
long keyId = KeyringTestingHelper.getSubkeyId(ring, 1);
parcel.reset();
parcel.mChangeSubKeys.add(new SubkeyChange(keyId, false, true));
assertModifyFailure("keytocard operation should fail on invalid key algorithm", ring,
parcel, cryptoInput, LogType.MSG_MF_ERROR_BAD_NFC_ALGO);
}
{ // keytocard should return a pending NFC_KEYTOCARD result when presented with the RSA-2048
// key, and then make key divert-to-card when it gets a serial in the cryptoInputParcel.
long keyId = KeyringTestingHelper.getSubkeyId(ring, 2);
parcel.reset();
parcel.mChangeSubKeys.add(new SubkeyChange(keyId, false, true));
CanonicalizedSecretKeyRing secretRing =
new CanonicalizedSecretKeyRing(ring.getEncoded(), false, 0);
PgpKeyOperation op = new PgpKeyOperation(null);
PgpEditKeyResult result = op.modifySecretKeyRing(secretRing, cryptoInput, parcel);
Assert.assertTrue("keytocard operation should be pending", result.isPending());
Assert.assertEquals("required input should be RequiredInputType.NFC_KEYTOCARD",
result.getRequiredInputParcel().mType, RequiredInputType.NFC_KEYTOCARD);
// Create a cryptoInputParcel that matches what the NFCOperationActivity would return.
byte[] keyIdBytes = new byte[8];
ByteBuffer buf = ByteBuffer.wrap(keyIdBytes);
buf.putLong(keyId).rewind();
byte[] serial = new byte[] {
0x6a, 0x6f, 0x6c, 0x6f, 0x73, 0x77, 0x61, 0x67,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
parcel.mChangeSubKeys.add(new SubkeyChange(keyId, false, serial));
modified = applyModificationWithChecks(parcel, ring, onlyA, onlyB, new CryptoInputParcel());
CryptoInputParcel inputParcel = new CryptoInputParcel();
inputParcel.addCryptoData(keyIdBytes, serial);
modified = applyModificationWithChecks(parcel, ring, onlyA, onlyB, inputParcel);
Assert.assertEquals("one extra packet in modified", 1, onlyB.size());
Packet p = new BCPGInputStream(new ByteArrayInputStream(onlyB.get(0).buf)).readPacket();
Assert.assertEquals("new packet should have GNU_DUMMY S2K type",

2
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/EditKeyOperation.java
View File

@ -83,7 +83,7 @@ public class EditKeyOperation extends BaseOperation {
CanonicalizedSecretKeyRing secRing =
mProviderHelper.getCanonicalizedSecretKeyRing(saveParcel.mMasterKeyId);
modifyResult = keyOperations.modifySecretKeyRing(secRing, cryptoInput, saveParcel);
modifyResult = keyOperations.modifySecretKeyRing(secRing, cryptoInput, saveParcel, log, 2);
if (modifyResult.isPending()) {
return modifyResult;
}

8
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/operations/results/OperationResult.java
View File

@ -494,6 +494,12 @@ public abstract class OperationResult implements Parcelable {
MSG_MF_ERROR_REVOKED_PRIMARY (LogLevel.ERROR, R.string.msg_mf_error_revoked_primary),
MSG_MF_ERROR_SIG (LogLevel.ERROR, R.string.msg_mf_error_sig),
MSG_MF_ERROR_SUBKEY_MISSING(LogLevel.ERROR, R.string.msg_mf_error_subkey_missing),
MSG_MF_ERROR_CONFLICTING_NFC_COMMANDS(LogLevel.ERROR, R.string.msg_mf_error_conflicting_nfc_commands),
MSG_MF_ERROR_DUPLICATE_KEYTOCARD_FOR_SLOT(LogLevel.ERROR, R.string.msg_mf_error_duplicate_keytocard_for_slot),
MSG_MF_ERROR_INVALID_FLAGS_FOR_KEYTOCARD(LogLevel.ERROR, R.string.msg_mf_error_invalid_flags_for_keytocard),
MSG_MF_ERROR_BAD_NFC_ALGO(LogLevel.ERROR, R.string.edit_key_error_bad_nfc_algo),
MSG_MF_ERROR_BAD_NFC_SIZE(LogLevel.ERROR, R.string.edit_key_error_bad_nfc_size),
MSG_MF_ERROR_BAD_NFC_STRIPPED(LogLevel.ERROR, R.string.edit_key_error_bad_nfc_stripped),
MSG_MF_MASTER (LogLevel.DEBUG, R.string.msg_mf_master),
MSG_MF_NOTATION_PIN (LogLevel.DEBUG, R.string.msg_mf_notation_pin),
MSG_MF_NOTATION_EMPTY (LogLevel.DEBUG, R.string.msg_mf_notation_empty),
@ -511,6 +517,8 @@ public abstract class OperationResult implements Parcelable {
MSG_MF_SUBKEY_NEW (LogLevel.INFO, R.string.msg_mf_subkey_new),
MSG_MF_SUBKEY_REVOKE (LogLevel.INFO, R.string.msg_mf_subkey_revoke),
MSG_MF_SUBKEY_STRIP (LogLevel.INFO, R.string.msg_mf_subkey_strip),
MSG_MF_KEYTOCARD_START (LogLevel.INFO, R.string.msg_mf_keytocard_start),
MSG_MF_KEYTOCARD_FINISH (LogLevel.OK, R.string.msg_mf_keytocard_finish),
MSG_MF_SUCCESS (LogLevel.OK, R.string.msg_mf_success),
MSG_MF_UID_ADD (LogLevel.INFO, R.string.msg_mf_uid_add),
MSG_MF_UID_PRIMARY (LogLevel.INFO, R.string.msg_mf_uid_primary),

24
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CanonicalizedSecretKey.java
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@ -33,6 +33,7 @@ import org.spongycastle.openpgp.operator.PBESecretKeyDecryptor;
import org.spongycastle.openpgp.operator.PGPContentSignerBuilder;
import org.spongycastle.openpgp.operator.PublicKeyDataDecryptorFactory;
import org.spongycastle.openpgp.operator.jcajce.JcaPGPContentSignerBuilder;
import org.spongycastle.openpgp.operator.jcajce.JcaPGPKeyConverter;
import org.spongycastle.openpgp.operator.jcajce.JcePBESecretKeyDecryptorBuilder;
import org.spongycastle.openpgp.operator.jcajce.JcePublicKeyDataDecryptorFactoryBuilder;
import org.spongycastle.openpgp.operator.jcajce.NfcSyncPGPContentSignerBuilder;
@ -45,6 +46,8 @@ import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.util.Passphrase;
import java.nio.ByteBuffer;
import java.security.PrivateKey;
import java.security.interfaces.RSAPrivateCrtKey;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
@ -281,6 +284,27 @@ public class CanonicalizedSecretKey extends CanonicalizedPublicKey {
}
}
// For use only in card export; returns the secret key in Chinese Remainder Theorem format.
public RSAPrivateCrtKey getCrtSecretKey() throws PgpGeneralException {
if (mPrivateKeyState == PRIVATE_KEY_STATE_LOCKED) {
throw new PgpGeneralException("Cannot get secret key attributes while key is locked.");
}
if (mPrivateKeyState == PRIVATE_KEY_STATE_DIVERT_TO_CARD) {
throw new PgpGeneralException("Cannot get secret key attributes of divert-to-card key.");
}
JcaPGPKeyConverter keyConverter = new JcaPGPKeyConverter();
PrivateKey retVal;
try {
retVal = keyConverter.getPrivateKey(mPrivateKey);
} catch (PGPException e) {
throw new PgpGeneralException("Error converting private key!", e);
}
return (RSAPrivateCrtKey)retVal;
}
public byte[] getIv() {
return mSecretKey.getIV();
}

157
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/PgpKeyOperation.java
View File

@ -18,6 +18,7 @@
package org.sufficientlysecure.keychain.pgp;
import org.spongycastle.bcpg.PublicKeyAlgorithmTags;
import org.spongycastle.bcpg.S2K;
import org.spongycastle.bcpg.sig.Features;
import org.spongycastle.bcpg.sig.KeyFlags;
@ -45,8 +46,10 @@ import org.spongycastle.openpgp.operator.jcajce.JcePBESecretKeyDecryptorBuilder;
import org.spongycastle.openpgp.operator.jcajce.JcePBESecretKeyEncryptorBuilder;
import org.spongycastle.openpgp.operator.jcajce.NfcSyncPGPContentSignerBuilder;
import org.spongycastle.openpgp.operator.jcajce.NfcSyncPGPContentSignerBuilder.NfcInteractionNeeded;
import org.spongycastle.util.encoders.Hex;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.operations.results.EditKeyResult;
import org.sufficientlysecure.keychain.operations.results.OperationResult;
import org.sufficientlysecure.keychain.operations.results.OperationResult.LogType;
import org.sufficientlysecure.keychain.operations.results.OperationResult.OperationLog;
@ -59,6 +62,7 @@ import org.sufficientlysecure.keychain.service.SaveKeyringParcel.SubkeyAdd;
import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
import org.sufficientlysecure.keychain.service.input.RequiredInputParcel;
import org.sufficientlysecure.keychain.service.input.RequiredInputParcel.NfcSignOperationsBuilder;
import org.sufficientlysecure.keychain.service.input.RequiredInputParcel.NfcKeyToCardOperationsBuilder;
import org.sufficientlysecure.keychain.ui.util.KeyFormattingUtils;
import org.sufficientlysecure.keychain.util.IterableIterator;
import org.sufficientlysecure.keychain.util.Log;
@ -68,6 +72,7 @@ import org.sufficientlysecure.keychain.util.ProgressScaler;
import java.io.IOException;
import java.math.BigInteger;
import java.nio.ByteBuffer;
import java.security.InvalidAlgorithmParameterException;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
@ -324,7 +329,7 @@ public class PgpKeyOperation {
subProgressPush(50, 100);
CryptoInputParcel cryptoInput = new CryptoInputParcel(new Date(), new Passphrase(""));
return internal(sKR, masterSecretKey, add.mFlags, add.mExpiry, cryptoInput, saveParcel, log);
return internal(sKR, masterSecretKey, add.mFlags, add.mExpiry, cryptoInput, saveParcel, log, indent);
} catch (PGPException e) {
log.add(LogType.MSG_CR_ERROR_INTERNAL_PGP, indent);
@ -356,11 +361,16 @@ public class PgpKeyOperation {
*
*/
public PgpEditKeyResult modifySecretKeyRing(CanonicalizedSecretKeyRing wsKR,
CryptoInputParcel cryptoInput,
SaveKeyringParcel saveParcel) {
CryptoInputParcel cryptoInput,
SaveKeyringParcel saveParcel) {
return modifySecretKeyRing(wsKR, cryptoInput, saveParcel, new OperationLog(), 0);
}
OperationLog log = new OperationLog();
int indent = 0;
public PgpEditKeyResult modifySecretKeyRing(CanonicalizedSecretKeyRing wsKR,
CryptoInputParcel cryptoInput,
SaveKeyringParcel saveParcel,
OperationLog log,
int indent) {
/*
* 1. Unlock private key
@ -400,9 +410,61 @@ public class PgpKeyOperation {
return new PgpEditKeyResult(PgpEditKeyResult.RESULT_ERROR, log, null);
}
// Ensure we don't have multiple keys for the same slot.
boolean hasSign = false;
boolean hasEncrypt = false;
boolean hasAuth = false;
for(SaveKeyringParcel.SubkeyChange change : saveParcel.mChangeSubKeys) {
if (change.mMoveKeyToCard) {
// If this is a keytocard operation, see if it was completed: look for a hash
// matching the given subkey ID in cryptoData.
byte[] subKeyId = new byte[8];
ByteBuffer buf = ByteBuffer.wrap(subKeyId);
buf.putLong(change.mKeyId).rewind();
byte[] serialNumber = cryptoInput.getCryptoData().get(buf);
if (serialNumber != null) {
change.mMoveKeyToCard = false;
change.mDummyDivert = serialNumber;
}
}
if (change.mMoveKeyToCard) {
// Pending keytocard operation. Need to make sure that we don't have multiple
// subkeys pending for the same slot.
CanonicalizedSecretKey wsK = wsKR.getSecretKey(change.mKeyId);
if ((wsK.canSign() || wsK.canCertify())) {
if (hasSign) {
log.add(LogType.MSG_MF_ERROR_DUPLICATE_KEYTOCARD_FOR_SLOT, indent + 1);
return new PgpEditKeyResult(PgpEditKeyResult.RESULT_ERROR, log, null);
} else {
hasSign = true;
}
} else if ((wsK.canEncrypt())) {
if (hasEncrypt) {
log.add(LogType.MSG_MF_ERROR_DUPLICATE_KEYTOCARD_FOR_SLOT, indent + 1);
return new PgpEditKeyResult(PgpEditKeyResult.RESULT_ERROR, log, null);
} else {
hasEncrypt = true;
}
} else if ((wsK.canAuthenticate())) {
if (hasAuth) {
log.add(LogType.MSG_MF_ERROR_DUPLICATE_KEYTOCARD_FOR_SLOT, indent + 1);
return new PgpEditKeyResult(PgpEditKeyResult.RESULT_ERROR, log, null);
} else {
hasAuth = true;
}
} else {
log.add(LogType.MSG_MF_ERROR_INVALID_FLAGS_FOR_KEYTOCARD, indent + 1);
return new PgpEditKeyResult(PgpEditKeyResult.RESULT_ERROR, log, null);
}
}
}
if (isDummy(masterSecretKey) || saveParcel.isRestrictedOnly()) {
log.add(LogType.MSG_MF_RESTRICTED_MODE, indent);
return internalRestricted(sKR, saveParcel, log);
return internalRestricted(sKR, saveParcel, log, indent + 1);
}
// Do we require a passphrase? If so, pass it along
@ -420,7 +482,7 @@ public class PgpKeyOperation {
Date expiryTime = wsKR.getPublicKey().getExpiryTime();
long masterKeyExpiry = expiryTime != null ? expiryTime.getTime() / 1000 : 0L;
return internal(sKR, masterSecretKey, masterKeyFlags, masterKeyExpiry, cryptoInput, saveParcel, log);
return internal(sKR, masterSecretKey, masterKeyFlags, masterKeyExpiry, cryptoInput, saveParcel, log, indent);
}
@ -428,13 +490,14 @@ public class PgpKeyOperation {
int masterKeyFlags, long masterKeyExpiry,
CryptoInputParcel cryptoInput,
SaveKeyringParcel saveParcel,
OperationLog log) {
int indent = 1;
OperationLog log,
int indent) {
NfcSignOperationsBuilder nfcSignOps = new NfcSignOperationsBuilder(
cryptoInput.getSignatureTime(), masterSecretKey.getKeyID(),
masterSecretKey.getKeyID());
NfcKeyToCardOperationsBuilder nfcKeyToCardOps = new NfcKeyToCardOperationsBuilder(
masterSecretKey.getKeyID());
progress(R.string.progress_modify, 0);
@ -743,22 +806,36 @@ public class PgpKeyOperation {
return new PgpEditKeyResult(PgpEditKeyResult.RESULT_ERROR, log, null);
}
if (change.mDummyStrip || change.mDummyDivert != null) {
if (change.mDummyStrip) {
// IT'S DANGEROUS~
// no really, it is. this operation irrevocably removes the private key data from the key
if (change.mDummyStrip) {
sKey = PGPSecretKey.constructGnuDummyKey(sKey.getPublicKey());
sKey = PGPSecretKey.constructGnuDummyKey(sKey.getPublicKey());
sKR = PGPSecretKeyRing.insertSecretKey(sKR, sKey);
} else if (change.mMoveKeyToCard) {
if (checkSmartCardCompatibility(sKey, log, indent + 1)) {
log.add(LogType.MSG_MF_KEYTOCARD_START, indent + 1,
KeyFormattingUtils.convertKeyIdToHex(change.mKeyId));
nfcKeyToCardOps.addSubkey(change.mKeyId);
} else {
// the serial number must be 16 bytes in length
if (change.mDummyDivert.length != 16) {
log.add(LogType.MSG_MF_ERROR_DIVERT_SERIAL,
indent + 1, KeyFormattingUtils.convertKeyIdToHex(change.mKeyId));
return new PgpEditKeyResult(PgpEditKeyResult.RESULT_ERROR, log, null);
}
// Appropriate log message already set by checkSmartCardCompatibility
return new PgpEditKeyResult(EditKeyResult.RESULT_ERROR, log, null);
}
} else if (change.mDummyDivert != null) {
// NOTE: Does this code get executed? Or always handled in internalRestricted?
if (change.mDummyDivert.length != 16) {
log.add(LogType.MSG_MF_ERROR_DIVERT_SERIAL,
indent + 1, KeyFormattingUtils.convertKeyIdToHex(change.mKeyId));
return new PgpEditKeyResult(PgpEditKeyResult.RESULT_ERROR, log, null);
}
log.add(LogType.MSG_MF_KEYTOCARD_FINISH, indent + 1,
KeyFormattingUtils.convertKeyIdToHex(change.mKeyId),
Hex.toHexString(change.mDummyDivert, 8, 6));
sKey = PGPSecretKey.constructGnuDummyKey(sKey.getPublicKey(), change.mDummyDivert);
sKR = PGPSecretKeyRing.insertSecretKey(sKR, sKey);
}
// This doesn't concern us any further
if (!change.mRecertify && (change.mExpiry == null && change.mFlags == null)) {
continue;
@ -980,11 +1057,21 @@ public class PgpKeyOperation {
progress(R.string.progress_done, 100);
if (!nfcSignOps.isEmpty() && !nfcKeyToCardOps.isEmpty()) {
log.add(LogType.MSG_MF_ERROR_CONFLICTING_NFC_COMMANDS, indent+1);
return new PgpEditKeyResult(PgpEditKeyResult.RESULT_ERROR, log, null);
}
if (!nfcSignOps.isEmpty()) {
log.add(LogType.MSG_MF_REQUIRE_DIVERT, indent);
return new PgpEditKeyResult(log, nfcSignOps.build());
}
if (!nfcKeyToCardOps.isEmpty()) {
log.add(LogType.MSG_MF_REQUIRE_DIVERT, indent);
return new PgpEditKeyResult(log, nfcKeyToCardOps.build());
}
log.add(LogType.MSG_MF_SUCCESS, indent);
return new PgpEditKeyResult(OperationResult.RESULT_OK, log, new UncachedKeyRing(sKR));
@ -995,9 +1082,7 @@ public class PgpKeyOperation {
* otherwise.
*/
private PgpEditKeyResult internalRestricted(PGPSecretKeyRing sKR, SaveKeyringParcel saveParcel,
OperationLog log) {
int indent = 1;
OperationLog log, int indent) {
progress(R.string.progress_modify, 0);
@ -1042,6 +1127,9 @@ public class PgpKeyOperation {
indent + 1, KeyFormattingUtils.convertKeyIdToHex(change.mKeyId));
return new PgpEditKeyResult(PgpEditKeyResult.RESULT_ERROR, log, null);
}
log.add(LogType.MSG_MF_KEYTOCARD_FINISH, indent + 1,
KeyFormattingUtils.convertKeyIdToHex(change.mKeyId),
Hex.toHexString(change.mDummyDivert, 8, 6));
sKey = PGPSecretKey.constructGnuDummyKey(sKey.getPublicKey(), change.mDummyDivert);
}
sKR = PGPSecretKeyRing.insertSecretKey(sKR, sKey);
@ -1481,4 +1569,29 @@ public class PgpKeyOperation {
&& s2k.getProtectionMode() == S2K.GNU_PROTECTION_MODE_DIVERT_TO_CARD;
}
private static boolean checkSmartCardCompatibility(PGPSecretKey key, OperationLog log, int indent) {
PGPPublicKey publicKey = key.getPublicKey();
int algorithm = publicKey.getAlgorithm();
if (algorithm != PublicKeyAlgorithmTags.RSA_ENCRYPT &&
algorithm != PublicKeyAlgorithmTags.RSA_SIGN &&
algorithm != PublicKeyAlgorithmTags.RSA_GENERAL) {
log.add(LogType.MSG_MF_ERROR_BAD_NFC_ALGO, indent + 1);
return false;
}
// Key size must be 2048
int keySize = publicKey.getBitStrength();
if (keySize != 2048) {
log.add(LogType.MSG_MF_ERROR_BAD_NFC_SIZE, indent + 1);
return false;
}
// Secret key parts must be available
if (isDivertToCard(key) || isDummy(key)) {
log.add(LogType.MSG_MF_ERROR_BAD_NFC_STRIPPED, indent + 1);
return false;
}
return true;
}
}

1
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/remote/OpenPgpService.java
View File

@ -167,6 +167,7 @@ public class OpenPgpService extends RemoteService {
Intent data, RequiredInputParcel requiredInput) {
switch (requiredInput.mType) {
case NFC_KEYTOCARD:
case NFC_DECRYPT:
case NFC_SIGN: {
// build PendingIntent for YubiKey NFC operations

14
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/SaveKeyringParcel.java
View File

@ -95,7 +95,8 @@ public class SaveKeyringParcel implements Parcelable {
}
for (SubkeyChange change : mChangeSubKeys) {
if (change.mRecertify || change.mFlags != null || change.mExpiry != null) {
if (change.mRecertify || change.mFlags != null || change.mExpiry != null
|| change.mMoveKeyToCard) {
return false;
}
}
@ -142,6 +143,8 @@ public class SaveKeyringParcel implements Parcelable {
public boolean mRecertify;
// if this flag is true, the subkey should be changed to a stripped key
public boolean mDummyStrip;
// if this flag is true, the subkey should be moved to a card
public boolean mMoveKeyToCard;
// if this is non-null, the subkey will be changed to a divert-to-card
// key for the given serial number
public byte[] mDummyDivert;
@ -161,16 +164,16 @@ public class SaveKeyringParcel implements Parcelable {
mExpiry = expiry;
}
public SubkeyChange(long keyId, boolean dummyStrip, byte[] dummyDivert) {
public SubkeyChange(long keyId, boolean dummyStrip, boolean moveKeyToCard) {
this(keyId, null, null);
// these flags are mutually exclusive!
if (dummyStrip && dummyDivert != null) {
if (dummyStrip && moveKeyToCard) {
throw new AssertionError(
"cannot set strip and divert flags at the same time - this is a bug!");
"cannot set strip and keytocard flags at the same time - this is a bug!");
}
mDummyStrip = dummyStrip;
mDummyDivert = dummyDivert;
mMoveKeyToCard = moveKeyToCard;
}
@Override
@ -179,6 +182,7 @@ public class SaveKeyringParcel implements Parcelable {
out += "mFlags: " + mFlags + ", ";
out += "mExpiry: " + mExpiry + ", ";
out += "mDummyStrip: " + mDummyStrip + ", ";
out += "mMoveKeyToCard: " + mMoveKeyToCard + ", ";
out += "mDummyDivert: [" + (mDummyDivert == null ? 0 : mDummyDivert.length) + " bytes]";
return out;

47
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/service/input/RequiredInputParcel.java
View File

@ -1,5 +1,6 @@
package org.sufficientlysecure.keychain.service.input;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Date;
@ -7,13 +8,11 @@ import java.util.Date;
import android.os.Parcel;
import android.os.Parcelable;
import org.sufficientlysecure.keychain.Constants.key;
public class RequiredInputParcel implements Parcelable {
public enum RequiredInputType {
PASSPHRASE, PASSPHRASE_SYMMETRIC, NFC_SIGN, NFC_DECRYPT
PASSPHRASE, PASSPHRASE_SYMMETRIC, NFC_SIGN, NFC_DECRYPT, NFC_KEYTOCARD
}
public Date mSignatureTime;
@ -211,4 +210,46 @@ public class RequiredInputParcel implements Parcelable {
}
public static class NfcKeyToCardOperationsBuilder {
ArrayList<byte[]> mSubkeysToExport = new ArrayList<>();
Long mMasterKeyId;
public NfcKeyToCardOperationsBuilder(Long masterKeyId) {
mMasterKeyId = masterKeyId;
}
public RequiredInputParcel build() {
byte[][] inputHashes = new byte[mSubkeysToExport.size()][];
mSubkeysToExport.toArray(inputHashes);
ByteBuffer buf = ByteBuffer.wrap(mSubkeysToExport.get(0));
// We need to pass in a subkey here...
return new RequiredInputParcel(RequiredInputType.NFC_KEYTOCARD,
inputHashes, null, null, mMasterKeyId, buf.getLong());
}
public void addSubkey(long subkeyId) {
byte[] subKeyId = new byte[8];
ByteBuffer buf = ByteBuffer.wrap(subKeyId);
buf.putLong(subkeyId).rewind();
mSubkeysToExport.add(subKeyId);
}
public void addAll(RequiredInputParcel input) {
if (!mMasterKeyId.equals(input.mMasterKeyId)) {
throw new AssertionError("Master keys must match, this is a programming error!");
}
if (input.mType != RequiredInputType.NFC_KEYTOCARD) {
throw new AssertionError("Operation types must match, this is a programming error!");
}
Collections.addAll(mSubkeysToExport, input.mInputHashes);
}
public boolean isEmpty() {
return mSubkeysToExport.isEmpty();
}
}
}

59
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyActivity.java
View File

@ -17,6 +17,8 @@
package org.sufficientlysecure.keychain.ui;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
@ -41,6 +43,7 @@ public class CreateKeyActivity extends BaseNfcActivity {
public static final String EXTRA_FIRST_TIME = "first_time";
public static final String EXTRA_ADDITIONAL_EMAILS = "additional_emails";
public static final String EXTRA_PASSPHRASE = "passphrase";
public static final String EXTRA_USE_SMART_CARD_SETTINGS = "use_smart_card_settings";
public static final String EXTRA_NFC_USER_ID = "nfc_user_id";
public static final String EXTRA_NFC_AID = "nfc_aid";
@ -53,6 +56,7 @@ public class CreateKeyActivity extends BaseNfcActivity {
ArrayList<String> mAdditionalEmails;
Passphrase mPassphrase;
boolean mFirstTime;
boolean mUseSmartCardSettings;
Fragment mCurrentFragment;
@ -68,6 +72,7 @@ public class CreateKeyActivity extends BaseNfcActivity {
mAdditionalEmails = savedInstanceState.getStringArrayList(EXTRA_ADDITIONAL_EMAILS);
mPassphrase = savedInstanceState.getParcelable(EXTRA_PASSPHRASE);
mFirstTime = savedInstanceState.getBoolean(EXTRA_FIRST_TIME);
mUseSmartCardSettings = savedInstanceState.getBoolean(EXTRA_USE_SMART_CARD_SETTINGS);
mCurrentFragment = getSupportFragmentManager().findFragmentByTag(FRAGMENT_TAG);
} else {
@ -77,6 +82,7 @@ public class CreateKeyActivity extends BaseNfcActivity {
mName = intent.getStringExtra(EXTRA_NAME);
mEmail = intent.getStringExtra(EXTRA_EMAIL);
mFirstTime = intent.getBooleanExtra(EXTRA_FIRST_TIME, false);
mUseSmartCardSettings = intent.getBooleanExtra(EXTRA_USE_SMART_CARD_SETTINGS, false);
if (intent.hasExtra(EXTRA_NFC_FINGERPRINTS)) {
byte[] nfcFingerprints = intent.getByteArrayExtra(EXTRA_NFC_FINGERPRINTS);
@ -116,23 +122,45 @@ public class CreateKeyActivity extends BaseNfcActivity {
byte[] nfcAid = nfcGetAid();
String userId = nfcGetUserId();
try {
long masterKeyId = KeyFormattingUtils.getKeyIdFromFingerprint(scannedFingerprints);
CachedPublicKeyRing ring = new ProviderHelper(this).getCachedPublicKeyRing(masterKeyId);
ring.getMasterKeyId();
// If all fingerprint bytes are 0, the card contains no keys.
boolean cardContainsKeys = false;
for (byte b : scannedFingerprints) {
if (b != 0) {
cardContainsKeys = true;
break;
}
}
Intent intent = new Intent(this, ViewKeyActivity.class);
intent.setData(KeyRings.buildGenericKeyRingUri(masterKeyId));
intent.putExtra(ViewKeyActivity.EXTRA_NFC_AID, nfcAid);
intent.putExtra(ViewKeyActivity.EXTRA_NFC_USER_ID, userId);
intent.putExtra(ViewKeyActivity.EXTRA_NFC_FINGERPRINTS, scannedFingerprints);
startActivity(intent);
finish();
if (cardContainsKeys) {
try {
long masterKeyId = KeyFormattingUtils.getKeyIdFromFingerprint(scannedFingerprints);
CachedPublicKeyRing ring = new ProviderHelper(this).getCachedPublicKeyRing(masterKeyId);
ring.getMasterKeyId();
} catch (PgpKeyNotFoundException e) {
Fragment frag = CreateKeyYubiKeyImportFragment.createInstance(
scannedFingerprints, nfcAid, userId);
loadFragment(frag, FragAction.TO_RIGHT);
Intent intent = new Intent(this, ViewKeyActivity.class);
intent.setData(KeyRings.buildGenericKeyRingUri(masterKeyId));
intent.putExtra(ViewKeyActivity.EXTRA_NFC_AID, nfcAid);
intent.putExtra(ViewKeyActivity.EXTRA_NFC_USER_ID, userId);
intent.putExtra(ViewKeyActivity.EXTRA_NFC_FINGERPRINTS, scannedFingerprints);
startActivity(intent);
finish();
} catch (PgpKeyNotFoundException e) {
Fragment frag = CreateKeyYubiKeyImportFragment.createInstance(
scannedFingerprints, nfcAid, userId);
loadFragment(frag, FragAction.TO_RIGHT);
}
} else {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle(R.string.first_time_blank_smartcard_title)
.setMessage(R.string.first_time_blank_smartcard_message)
.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int button) {
CreateKeyActivity.this.mUseSmartCardSettings = true;
}
})
.setNegativeButton(android.R.string.no, null).show();
}
}
@ -146,6 +174,7 @@ public class CreateKeyActivity extends BaseNfcActivity {
outState.putStringArrayList(EXTRA_ADDITIONAL_EMAILS, mAdditionalEmails);
outState.putParcelable(EXTRA_PASSPHRASE, mPassphrase);
outState.putBoolean(EXTRA_FIRST_TIME, mFirstTime);
outState.putBoolean(EXTRA_USE_SMART_CARD_SETTINGS, mUseSmartCardSettings);
}
@Override

22
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/CreateKeyFinalFragment.java
View File

@ -163,12 +163,22 @@ public class CreateKeyFinalFragment extends Fragment {
if (mSaveKeyringParcel == null) {
mSaveKeyringParcel = new SaveKeyringParcel();
mSaveKeyringParcel.mAddSubKeys.add(new SaveKeyringParcel.SubkeyAdd(
Algorithm.RSA, 4096, null, KeyFlags.CERTIFY_OTHER, 0L));
mSaveKeyringParcel.mAddSubKeys.add(new SaveKeyringParcel.SubkeyAdd(
Algorithm.RSA, 4096, null, KeyFlags.SIGN_DATA, 0L));
mSaveKeyringParcel.mAddSubKeys.add(new SaveKeyringParcel.SubkeyAdd(
Algorithm.RSA, 4096, null, KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE, 0L));
if (mCreateKeyActivity.mUseSmartCardSettings) {
mSaveKeyringParcel.mAddSubKeys.add(new SaveKeyringParcel.SubkeyAdd(Algorithm.RSA,
2048, null, KeyFlags.SIGN_DATA | KeyFlags.CERTIFY_OTHER, 0L));
mSaveKeyringParcel.mAddSubKeys.add(new SaveKeyringParcel.SubkeyAdd(Algorithm.RSA,
2048, null, KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE, 0L));
mSaveKeyringParcel.mAddSubKeys.add(new SaveKeyringParcel.SubkeyAdd(Algorithm.RSA,
2048, null, KeyFlags.AUTHENTICATION, 0L));
mEditText.setText(R.string.create_key_custom);
} else {
mSaveKeyringParcel.mAddSubKeys.add(new SaveKeyringParcel.SubkeyAdd(Algorithm.RSA,
4096, null, KeyFlags.CERTIFY_OTHER, 0L));
mSaveKeyringParcel.mAddSubKeys.add(new SaveKeyringParcel.SubkeyAdd(Algorithm.RSA,
4096, null, KeyFlags.SIGN_DATA, 0L));
mSaveKeyringParcel.mAddSubKeys.add(new SaveKeyringParcel.SubkeyAdd(Algorithm.RSA,
4096, null, KeyFlags.ENCRYPT_COMMS | KeyFlags.ENCRYPT_STORAGE, 0L));
}
String userId = KeyRing.createUserId(
new KeyRing.UserId(mCreateKeyActivity.mName, mCreateKeyActivity.mEmail, null)
);

57
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/EditKeyFragment.java
View File

@ -42,6 +42,7 @@ import org.sufficientlysecure.keychain.compatibility.DialogFragmentWorkaround;
import org.sufficientlysecure.keychain.operations.results.OperationResult;
import org.sufficientlysecure.keychain.operations.results.OperationResult.LogType;
import org.sufficientlysecure.keychain.operations.results.SingletonResult;
import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKey.SecretKeyType;
import org.sufficientlysecure.keychain.pgp.KeyRing;
import org.sufficientlysecure.keychain.pgp.exception.PgpKeyNotFoundException;
import org.sufficientlysecure.keychain.provider.CachedPublicKeyRing;
@ -65,6 +66,8 @@ import org.sufficientlysecure.keychain.ui.util.Notify;
import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.util.Passphrase;
import java.nio.ByteBuffer;
public class EditKeyFragment extends CryptoOperationFragment implements
LoaderManager.LoaderCallbacks<Cursor> {
@ -415,15 +418,65 @@ public class EditKeyFragment extends CryptoOperationFragment implements
mSaveKeyringParcel.mRevokeSubKeys.add(keyId);
}
break;
case EditSubkeyDialogFragment.MESSAGE_STRIP:
case EditSubkeyDialogFragment.MESSAGE_STRIP: {
SecretKeyType secretKeyType = mSubkeysAdapter.getSecretKeyType(position);
if (secretKeyType == SecretKeyType.GNU_DUMMY) {
// Key is already stripped; this is a no-op.
break;
}
SubkeyChange change = mSaveKeyringParcel.getSubkeyChange(keyId);
if (change == null) {
mSaveKeyringParcel.mChangeSubKeys.add(new SubkeyChange(keyId, true, null));
mSaveKeyringParcel.mChangeSubKeys.add(new SubkeyChange(keyId, true, false));
break;
}
// toggle
change.mDummyStrip = !change.mDummyStrip;
if (change.mDummyStrip && change.mMoveKeyToCard) {
// User had chosen to divert key, but now wants to strip it instead.
change.mMoveKeyToCard = false;
}
break;
}
case EditSubkeyDialogFragment.MESSAGE_KEYTOCARD: {
Activity activity = EditKeyFragment.this.getActivity();
SecretKeyType secretKeyType = mSubkeysAdapter.getSecretKeyType(position);
if (secretKeyType == SecretKeyType.DIVERT_TO_CARD ||
secretKeyType == SecretKeyType.GNU_DUMMY) {
Notify.create(activity, R.string.edit_key_error_bad_nfc_stripped, Notify.Style.ERROR)
.show((ViewGroup) activity.findViewById(R.id.import_snackbar));
break;
}
int algorithm = mSubkeysAdapter.getAlgorithm(position);
// these are the PGP constants for RSA_GENERAL, RSA_ENCRYPT and RSA_SIGN
if (algorithm != 1 && algorithm != 2 && algorithm != 3) {
Notify.create(activity, R.string.edit_key_error_bad_nfc_algo, Notify.Style.ERROR)
.show((ViewGroup) activity.findViewById(R.id.import_snackbar));
break;
}
if (mSubkeysAdapter.getKeySize(position) != 2048) {
Notify.create(activity, R.string.edit_key_error_bad_nfc_size, Notify.Style.ERROR)
.show((ViewGroup) activity.findViewById(R.id.import_snackbar));
break;
}
SubkeyChange change;
change = mSaveKeyringParcel.getSubkeyChange(keyId);
if (change == null) {
mSaveKeyringParcel.mChangeSubKeys.add(
new SubkeyChange(keyId, false, true)
);
break;
}
// toggle
change.mMoveKeyToCard = !change.mMoveKeyToCard;
if (change.mMoveKeyToCard && change.mDummyStrip) {
// User had chosen to strip key, but now wants to divert it.
change.mDummyStrip = false;
}
break;
}
}
getLoaderManager().getLoader(LOADER_ID_SUBKEYS).forceLoad();
}

62
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/NfcOperationActivity.java
View File

@ -10,17 +10,24 @@ import android.content.Intent;
import android.os.Bundle;
import android.view.WindowManager;
import org.spongycastle.util.Arrays;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKey;
import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKeyRing;
import org.sufficientlysecure.keychain.provider.KeychainContract;
import org.sufficientlysecure.keychain.provider.ProviderHelper;
import org.sufficientlysecure.keychain.remote.CryptoInputParcelCacheService;
import org.sufficientlysecure.keychain.service.PassphraseCacheService;
import org.sufficientlysecure.keychain.service.input.CryptoInputParcel;
import org.sufficientlysecure.keychain.service.input.RequiredInputParcel;
import org.sufficientlysecure.keychain.ui.base.BaseNfcActivity;
import org.sufficientlysecure.keychain.util.Log;
import org.sufficientlysecure.keychain.util.Passphrase;
import org.sufficientlysecure.keychain.util.Preferences;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* This class provides a communication interface to OpenPGP applications on ISO SmartCard compliant
@ -53,8 +60,9 @@ public class NfcOperationActivity extends BaseNfcActivity {
mRequiredInput = data.getParcelable(EXTRA_REQUIRED_INPUT);
mServiceIntent = data.getParcelable(EXTRA_SERVICE_INTENT);
// obtain passphrase for this subkey
obtainYubiKeyPin(RequiredInputParcel.createRequiredPassphrase(mRequiredInput));
if (mRequiredInput.mType != RequiredInputParcel.RequiredInputType.NFC_KEYTOCARD) {
obtainYubiKeyPin(RequiredInputParcel.createRequiredPassphrase(mRequiredInput));
}
}
@Override
@ -85,6 +93,56 @@ public class NfcOperationActivity extends BaseNfcActivity {
}
break;
}
case NFC_KEYTOCARD: {
ProviderHelper providerHelper = new ProviderHelper(this);
CanonicalizedSecretKeyRing secretKeyRing;
try {
secretKeyRing = providerHelper.getCanonicalizedSecretKeyRing(
KeychainContract.KeyRings.buildUnifiedKeyRingsFindBySubkeyUri(mRequiredInput.getMasterKeyId())
);
} catch (ProviderHelper.NotFoundException e) {
throw new IOException("Couldn't find subkey for key to card operation.");
}
for (int i = 0; i < mRequiredInput.mInputHashes.length; i++) {
byte[] subkeyBytes = mRequiredInput.mInputHashes[i];
ByteBuffer buf = ByteBuffer.wrap(subkeyBytes);
long subkeyId = buf.getLong();
CanonicalizedSecretKey key = secretKeyRing.getSecretKey(subkeyId);
long keyGenerationTimestampMillis = key.getCreationTime().getTime();
long keyGenerationTimestamp = keyGenerationTimestampMillis / 1000;
byte[] timestampBytes = ByteBuffer.allocate(4).putInt((int) keyGenerationTimestamp).array();
byte[] cardSerialNumber = Arrays.copyOf(nfcGetAid(), 16);
Passphrase passphrase;
try {
passphrase = PassphraseCacheService.getCachedPassphrase(this,
mRequiredInput.getMasterKeyId(), mRequiredInput.getSubKeyId());
} catch (PassphraseCacheService.KeyNotFoundException e) {
throw new IOException("Unable to get cached passphrase!");
}
if (key.canSign() || key.canCertify()) {
nfcPutKey(0xB6, key, passphrase);
nfcPutData(0xCE, timestampBytes);
nfcPutData(0xC7, key.getFingerprint());
} else if (key.canEncrypt()) {
nfcPutKey(0xB8, key, passphrase);
nfcPutData(0xCF, timestampBytes);
nfcPutData(0xC8, key.getFingerprint());
} else if (key.canAuthenticate()) {
nfcPutKey(0xA4, key, passphrase);
nfcPutData(0xD0, timestampBytes);
nfcPutData(0xC9, key.getFingerprint());
} else {
throw new IOException("Inappropriate key flags for smart card key.");
}
inputParcel.addCryptoData(subkeyBytes, cardSerialNumber);
}
}
}
if (mServiceIntent != null) {

39
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/adapter/SubkeysAdapter.java
View File

@ -116,6 +116,21 @@ public class SubkeysAdapter extends CursorAdapter {
}
}
public int getAlgorithm(int position) {
mCursor.moveToPosition(position);
return mCursor.getInt(INDEX_ALGORITHM);
}
public int getKeySize(int position) {
mCursor.moveToPosition(position);
return mCursor.getInt(INDEX_KEY_SIZE);
}
public SecretKeyType getSecretKeyType(int position) {
mCursor.moveToPosition(position);
return SecretKeyType.fromNum(mCursor.getInt(INDEX_HAS_SECRET));
}
@Override
public Cursor swapCursor(Cursor newCursor) {
hasAnySecret = false;
@ -164,13 +179,23 @@ public class SubkeysAdapter extends CursorAdapter {
? mSaveKeyringParcel.getSubkeyChange(keyId)
: null;
if (change != null && change.mDummyStrip) {
algorithmStr.append(", ");
final SpannableString boldStripped = new SpannableString(
context.getString(R.string.key_stripped)
);
boldStripped.setSpan(new StyleSpan(Typeface.BOLD), 0, boldStripped.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
algorithmStr.append(boldStripped);
if (change != null && (change.mDummyStrip || change.mMoveKeyToCard)) {
if (change.mDummyStrip) {
algorithmStr.append(", ");
final SpannableString boldStripped = new SpannableString(
context.getString(R.string.key_stripped)
);
boldStripped.setSpan(new StyleSpan(Typeface.BOLD), 0, boldStripped.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
algorithmStr.append(boldStripped);
}
if (change.mMoveKeyToCard) {
algorithmStr.append(", ");
final SpannableString boldDivert = new SpannableString(
context.getString(R.string.key_divert)
);
boldDivert.setSpan(new StyleSpan(Typeface.BOLD), 0, boldDivert.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
algorithmStr.append(boldDivert);
}
} else {
switch (SecretKeyType.fromNum(cursor.getInt(INDEX_HAS_SECRET))) {
case GNU_DUMMY:

231
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/BaseNfcActivity.java
View File

@ -19,7 +19,9 @@
package org.sufficientlysecure.keychain.ui.base;
import java.io.IOException;
import java.math.BigInteger;
import java.nio.ByteBuffer;
import java.security.interfaces.RSAPrivateCrtKey;
import android.app.Activity;
import android.app.PendingIntent;
@ -32,9 +34,12 @@ import android.os.Bundle;
import android.widget.Toast;
import org.spongycastle.bcpg.HashAlgorithmTags;
import org.spongycastle.util.Arrays;
import org.spongycastle.util.encoders.Hex;
import org.sufficientlysecure.keychain.Constants;
import org.sufficientlysecure.keychain.R;
import org.sufficientlysecure.keychain.pgp.CanonicalizedSecretKey;
import org.sufficientlysecure.keychain.pgp.exception.PgpGeneralException;
import org.sufficientlysecure.keychain.pgp.exception.PgpKeyNotFoundException;
import org.sufficientlysecure.keychain.provider.CachedPublicKeyRing;
import org.sufficientlysecure.keychain.provider.KeychainContract.KeyRings;
@ -54,12 +59,14 @@ import org.sufficientlysecure.keychain.util.Preferences;
public abstract class BaseNfcActivity extends BaseActivity {
public static final int REQUEST_CODE_PASSPHRASE = 1;
public static final int REQUEST_CODE_PIN = 1;
protected Passphrase mPin;
protected Passphrase mAdminPin;
protected boolean mPw1ValidForMultipleSignatures;
protected boolean mPw1ValidatedForSignature;
protected boolean mPw1ValidatedForDecrypt; // Mode 82 does other things; consider renaming?
protected boolean mPw3Validated;
private NfcAdapter mNfcAdapter;
private IsoDep mIsoDep;
@ -138,7 +145,7 @@ public abstract class BaseNfcActivity extends BaseActivity {
Intent intent = new Intent(this, PassphraseDialogActivity.class);
intent.putExtra(PassphraseDialogActivity.EXTRA_REQUIRED_INPUT,
RequiredInputParcel.createRequiredPassphrase(requiredInput));
startActivityForResult(intent, REQUEST_CODE_PASSPHRASE);
startActivityForResult(intent, REQUEST_CODE_PIN);
}
@ -149,7 +156,7 @@ public abstract class BaseNfcActivity extends BaseActivity {
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_CODE_PASSPHRASE:
case REQUEST_CODE_PIN: {
if (resultCode != Activity.RESULT_OK) {
setResult(resultCode);
finish();
@ -158,6 +165,7 @@ public abstract class BaseNfcActivity extends BaseActivity {
CryptoInputParcel input = data.getParcelableExtra(PassphraseDialogActivity.RESULT_CRYPTO_INPUT);
mPin = input.getPassphrase();
break;
}
default:
super.onActivityResult(requestCode, resultCode, data);
@ -208,6 +216,10 @@ public abstract class BaseNfcActivity extends BaseActivity {
mPw1ValidForMultipleSignatures = (pwStatusBytes[0] == 1);
mPw1ValidatedForSignature = false;
mPw1ValidatedForDecrypt = false;
mPw3Validated = false;
// TODO: Handle non-default Admin PIN
mAdminPin = new Passphrase("12345678");
onNfcPerform();
@ -460,13 +472,21 @@ public abstract class BaseNfcActivity extends BaseActivity {
return Hex.decode(decryptedSessionKey);
}
/** Verifies the user's PW1 with the appropriate mode.
/** Verifies the user's PW1 or PW3 with the appropriate mode.
*
* @param mode This is 0x81 for signing, 0x82 for everything else
* @param mode For PW1, this is 0x81 for signing, 0x82 for everything else.
* For PW3 (Admin PIN), mode is 0x83.
*/
public void nfcVerifyPIN(int mode) throws IOException {
if (mPin != null) {
byte[] pin = new String(mPin.getCharArray()).getBytes();
if (mPin != null || mode == 0x83) {
byte[] pin;
if (mode == 0x83) {
pin = new String(mAdminPin.getCharArray()).getBytes();
} else {
pin = new String(mPin.getCharArray()).getBytes();
}
// SW1/2 0x9000 is the generic "ok" response, which we expect most of the time.
// See specification, page 51
String accepted = "9000";
@ -488,10 +508,207 @@ public abstract class BaseNfcActivity extends BaseActivity {
mPw1ValidatedForSignature = true;
} else if (mode == 0x82) {
mPw1ValidatedForDecrypt = true;
} else if (mode == 0x83) {
mPw3Validated = true;
}
}
}
/** Modifies the user's PW1 or PW3. Before sending, the new PIN will be validated for
* conformance to the card's requirements for key length.
*
* @param pw For PW1, this is 0x81. For PW3 (Admin PIN), mode is 0x83.
* @param newPinString The new PW1 or PW3.
*/
public void nfcModifyPIN(int pw, String newPinString) throws IOException {
final int MAX_PW1_LENGTH_INDEX = 1;
final int MAX_PW3_LENGTH_INDEX = 3;
byte[] pwStatusBytes = nfcGetPwStatusBytes();
byte[] newPin = newPinString.getBytes();
if (pw == 0x81) {
if (newPin.length < 6 || newPin.length > pwStatusBytes[MAX_PW1_LENGTH_INDEX]) {
throw new IOException("Invalid PIN length");
}
} else if (pw == 0x83) {
if (newPin.length < 8 || newPin.length > pwStatusBytes[MAX_PW3_LENGTH_INDEX]) {
throw new IOException("Invalid PIN length");
}
} else {
throw new IOException("Invalid PW index for modify PIN operation");
}
byte[] pin;
if (pw == 0x83) {
pin = new String(mAdminPin.getCharArray()).getBytes();
} else {
pin = new String(mPin.getCharArray()).getBytes();
}
// Command APDU for CHANGE REFERENCE DATA command (page 32)
String changeReferenceDataApdu = "00" // CLA
+ "24" // INS
+ "00" // P1
+ String.format("%02x", pw) // P2
+ String.format("%02x", pin.length + newPin.length) // Lc
+ getHex(pin)
+ getHex(newPin);
if (!nfcCommunicate(changeReferenceDataApdu).equals("9000")) { // Change reference data
handlePinError();
throw new IOException("Failed to change PIN");
}
}
/**
* Stores a data object on the card. Automatically validates the proper PIN for the operation.
* Supported for all data objects < 255 bytes in length. Only the cardholder certificate
* (0x7F21) can exceed this length.
*
* @param dataObject The data object to be stored.
* @param data The data to store in the object
*/
public void nfcPutData(int dataObject, byte[] data) throws IOException {
if (data.length > 254) {
throw new IOException("Cannot PUT DATA with length > 254");
}
if (dataObject == 0x0101 || dataObject == 0x0103) {
if (!mPw1ValidatedForDecrypt) {
nfcVerifyPIN(0x82); // (Verify PW1 for non-signing operations)
}
} else if (!mPw3Validated) {
nfcVerifyPIN(0x83); // (Verify PW3)
}
String putDataApdu = "00" // CLA
+ "DA" // INS
+ String.format("%02x", (dataObject & 0xFF00) >> 8) // P1
+ String.format("%02x", dataObject & 0xFF) // P2
+ String.format("%02x", data.length) // Lc
+ getHex(data);
String response = nfcCommunicate(putDataApdu);
if (!response.equals("9000")) {
throw new IOException("Failed to put data for tag "
+ String.format("%02x", (dataObject & 0xFF00) >> 8)
+ String.format("%02x", dataObject & 0xFF)
+ ": " + response);
}
}
/**
* Puts a key on the card in the given slot.
*
* @param slot The slot on the card where the key should be stored:
* 0xB6: Signature Key
* 0xB8: Decipherment Key
* 0xA4: Authentication Key
*/
public void nfcPutKey(int slot, CanonicalizedSecretKey secretKey, Passphrase passphrase)
throws IOException {
if (slot != 0xB6 && slot != 0xB8 && slot != 0xA4) {
throw new IOException("Invalid key slot");
}
RSAPrivateCrtKey crtSecretKey = null;
try {
secretKey.unlock(passphrase);
crtSecretKey = secretKey.getCrtSecretKey();
} catch (PgpGeneralException e) {
throw new IOException(e.getMessage());
}
// Shouldn't happen; the UI should block the user from getting an incompatible key this far.
if (crtSecretKey.getModulus().bitLength() > 2048) {
throw new IOException("Key too large to export to smart card.");
}
// Should happen only rarely; all GnuPG keys since 2006 use public exponent 65537.
if (!crtSecretKey.getPublicExponent().equals(new BigInteger("65537"))) {
throw new IOException("Invalid public exponent for smart card key.");
}
if (!mPw3Validated) {
nfcVerifyPIN(0x83); // (Verify PW1 with mode 83)
}
byte[] header= Hex.decode(
"4D82" + "03A2" // Extended header list 4D82, length of 930 bytes. (page 23)
+ String.format("%02x", slot) + "00" // CRT to indicate targeted key, no length
+ "7F48" + "15" // Private key template 0x7F48, length 21 (decimal, 0x15 hex)
+ "9103" // Public modulus, length 3
+ "928180" // Prime P, length 128
+ "938180" // Prime Q, length 128
+ "948180" // Coefficient (1/q mod p), length 128
+ "958180" // Prime exponent P (d mod (p - 1)), length 128
+ "968180" // Prime exponent Q (d mod (1 - 1)), length 128
+ "97820100" // Modulus, length 256, last item in private key template
+ "5F48" + "820383");// DO 5F48; 899 bytes of concatenated key data will follow
byte[] dataToSend = new byte[934];
byte[] currentKeyObject;
int offset = 0;
System.arraycopy(header, 0, dataToSend, offset, header.length);
offset += header.length;
currentKeyObject = crtSecretKey.getPublicExponent().toByteArray();
System.arraycopy(currentKeyObject, 0, dataToSend, offset, 3);
offset += 3;
// NOTE: For a 2048-bit key, these lengths are fixed. However, bigint includes a leading 0
// in the array to represent sign, so we take care to set the offset to 1 if necessary.
currentKeyObject = crtSecretKey.getPrimeP().toByteArray();
System.arraycopy(currentKeyObject, currentKeyObject.length - 128, dataToSend, offset, 128);
Arrays.fill(currentKeyObject, (byte)0);
offset += 128;
currentKeyObject = crtSecretKey.getPrimeQ().toByteArray();
System.arraycopy(currentKeyObject, currentKeyObject.length - 128, dataToSend, offset, 128);
Arrays.fill(currentKeyObject, (byte)0);
offset += 128;
currentKeyObject = crtSecretKey.getCrtCoefficient().toByteArray();
System.arraycopy(currentKeyObject, currentKeyObject.length - 128, dataToSend, offset, 128);
Arrays.fill(currentKeyObject, (byte)0);
offset += 128;
currentKeyObject = crtSecretKey.getPrimeExponentP().toByteArray();
System.arraycopy(currentKeyObject, currentKeyObject.length - 128, dataToSend, offset, 128);
Arrays.fill(currentKeyObject, (byte)0);
offset += 128;
currentKeyObject = crtSecretKey.getPrimeExponentQ().toByteArray();
System.arraycopy(currentKeyObject, currentKeyObject.length - 128, dataToSend, offset, 128);
Arrays.fill(currentKeyObject, (byte)0);
offset += 128;
currentKeyObject = crtSecretKey.getModulus().toByteArray();
System.arraycopy(currentKeyObject, currentKeyObject.length - 256, dataToSend, offset, 256);
String putKeyCommand = "10DB3FFF";
String lastPutKeyCommand = "00DB3FFF";
// Now we're ready to communicate with the card.
offset = 0;
String response;
while(offset < dataToSend.length) {
int dataRemaining = dataToSend.length - offset;
if (dataRemaining > 254) {
response = nfcCommunicate(
putKeyCommand + "FE" + Hex.toHexString(dataToSend, offset, 254)
);
offset += 254;
} else {
int length = dataToSend.length - offset;
response = nfcCommunicate(
lastPutKeyCommand + String.format("%02x", length)
+ Hex.toHexString(dataToSend, offset, length));
offset += length;
}
if (!response.endsWith("9000")) {
throw new IOException("Key export to card failed");
}
}
// Clear array with secret data before we return.
Arrays.fill(dataToSend, (byte) 0);
}
/**
* Prints a message to the screen
*

1
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/CryptoOperationFragment.java
View File

@ -43,6 +43,7 @@ public abstract class CryptoOperationFragment extends Fragment {
private void initiateInputActivity(RequiredInputParcel requiredInput) {
switch (requiredInput.mType) {
case NFC_KEYTOCARD:
case NFC_DECRYPT:
case NFC_SIGN: {
Intent intent = new Intent(getActivity(), NfcOperationActivity.class);

4
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/dialog/EditSubkeyDialogFragment.java
View File

@ -35,6 +35,7 @@ public class EditSubkeyDialogFragment extends DialogFragment {
public static final int MESSAGE_CHANGE_EXPIRY = 1;
public static final int MESSAGE_REVOKE = 2;
public static final int MESSAGE_STRIP = 3;
public static final int MESSAGE_KEYTOCARD = 4;
private Messenger mMessenger;
@ -76,6 +77,9 @@ public class EditSubkeyDialogFragment extends DialogFragment {
case 2:
sendMessageToHandler(MESSAGE_STRIP, null);
break;
case 3:
sendMessageToHandler(MESSAGE_KEYTOCARD, null);
break;
default:
break;
}

1
OpenKeychain/src/main/res/values-cs/strings.xml
View File

@ -424,6 +424,7 @@
<item>Změnit expiraci</item>
<item>Zneplatnit podklíč</item>
<item>Strip podklíč</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">nový podklíč</string>
<string name="edit_key_select_flag">Prosím vyberte alespoň jeden příznak!</string>

1
OpenKeychain/src/main/res/values-de/strings.xml
View File

@ -555,6 +555,7 @@
<item>Ablaufdatum ändern</item>
<item>Unterschlüssel widerrufen</item>
<item>Unterschlüssel kürzen</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">neuer Unterschlüssel</string>
<string name="edit_key_select_flag">Mindestens ein Attribut wählen!</string>

1
OpenKeychain/src/main/res/values-es/strings.xml
View File

@ -555,6 +555,7 @@
<item>Cambiar expiración</item>
<item>Revocar subclave</item>
<item>Desnudar subclave</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">nueva subclave</string>
<string name="edit_key_select_flag">¡Por favor, seleccione al menos un indicador!</string>

1
OpenKeychain/src/main/res/values-fr/strings.xml
View File

@ -555,6 +555,7 @@
<item>Changer l\'expiration</item>
<item>Révoquer la sous-clef</item>
<item>Dépouiller la sous-clef</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">nouvelle sous-clef</string>
<string name="edit_key_select_flag">Veuillez sélectionner au moins un drapeau !</string>

1
OpenKeychain/src/main/res/values-it/strings.xml
View File

@ -409,6 +409,7 @@ Permetti accesso?\n\nATTENZIONE: Se non sai perche\' questo schermata e\' appars
<item>Cambia Scadenza</item>
<item>Revoca Sottochiave</item>
<item>Pulisci Sottochiave</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">nuova sottochiave</string>
<string name="edit_key_select_flag">Per favore seleziona almeno una spunta!</string>

1
OpenKeychain/src/main/res/values-ja/strings.xml
View File

@ -547,6 +547,7 @@
<item>期限の変更</item>
<item>副鍵の破棄</item>
<item>副鍵のストリップ</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">新しい副鍵</string>
<string name="edit_key_select_flag">最低1つフラグを選択してください!</string>

1
OpenKeychain/src/main/res/values-nl/strings.xml
View File

@ -555,6 +555,7 @@
<item>Vervaldatum veranderen</item>
<item>Subsleutel intrekken</item>
<item>Subsleutel strippen</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">nieuwe subsleutel</string>
<string name="edit_key_select_flag">Gelieve minstens een vlag te selecteren!</string>

1
OpenKeychain/src/main/res/values-pl/strings.xml
View File

@ -472,6 +472,7 @@ OSTRZEŻENIE: Jeżeli nie wiesz, czemu wyświetlił się ten komunikat, nie zezw
<item>Zmień wygaśnięcie</item>
<item>Unieważnij Pod-klucz</item>
<item>Usuń Pod-klucz</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">nowy pod-klucz</string>
<string name="edit_key_select_flag">Prosimy o wybranie przynajmniej jeden flagi!</string>

1
OpenKeychain/src/main/res/values-ru/strings.xml
View File

@ -456,6 +456,7 @@
<item>Изменить срок годности</item>
<item>Отозвать доп. ключ</item>
<item>Отделить доп. ключ</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">новый доп. ключ</string>
<string name="edit_key_select_flag">Пожалуйста, выберите хотя бы один флаг!</string>

1
OpenKeychain/src/main/res/values-sl/strings.xml
View File

@ -587,6 +587,7 @@
<item>Spremeni datum poteka</item>
<item>Prekliči podključ</item>
<item>Razstavi podključ</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">nov podključ</string>
<string name="edit_key_select_flag">Izberite vsaj eno oznako!</string>

1
OpenKeychain/src/main/res/values-sr/strings.xml
View File

@ -542,6 +542,7 @@
<item>Измени истицање</item>
<item>Опозови поткључ</item>
<item>Оголи поткључ</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">нови поткључ</string>
<string name="edit_key_select_flag">Изаберите бар једну заставицу!</string>

1
OpenKeychain/src/main/res/values-zh-rTW/strings.xml
View File

@ -465,6 +465,7 @@
<item>變更到期日</item>
<item>撤銷子金鑰</item>
<item>Strip Subkey</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">新增子金鑰</string>
<string name="edit_key_error_add_identity">新增至少一組身分識別！</string>

11
OpenKeychain/src/main/res/values/strings.xml
View File

@ -621,11 +621,15 @@
<item>"Change Expiry"</item>
<item>"Revoke Subkey"</item>
<item>"Strip Subkey"</item>
<item>"Move Subkey to Yubikey / Smart Card"</item>
</string-array>
<string name="edit_key_new_subkey">"new subkey"</string>
<string name="edit_key_select_flag">"Please select at least one flag!"</string>
<string name="edit_key_error_add_identity">"Add at least one identity!"</string>
<string name="edit_key_error_add_subkey">"Add at least one subkey!"</string>
<string name="edit_key_error_bad_nfc_algo">"Algorithm not supported by smart card!"</string>
<string name="edit_key_error_bad_nfc_size">"Key size not supported by smart card!"</string>
<string name="edit_key_error_bad_nfc_stripped">"Cannot move stripped / diverted key to smart card!"</string>
<!-- Create key -->
<string name="create_key_upload">"Synchronize with the cloud"</string>
@ -924,6 +928,9 @@
<string name="msg_mf_error_pgp">"Internal OpenPGP error!"</string>
<string name="msg_mf_error_sig">"Signature exception!"</string>
<string name="msg_mf_error_subkey_missing">"Tried to operate on missing subkey %s!"</string>
<string name="msg_mf_error_conflicting_nfc_commands">"Cannot move key to card in same operation that creates an on-card signature."</string>
<string name="msg_mf_error_duplicate_keytocard_for_slot">"Smart card supports only one slot per key type."</string>
<string name="msg_mf_error_invalid_flags_for_keytocard">"Inappropriate key flags for smart card key."</string>
<string name="msg_mf_master">"Modifying master certifications"</string>
<string name="msg_mf_notation_empty">"Adding empty notation packet"</string>
<string name="msg_mf_notation_pin">"Adding PIN notation packet"</string>
@ -942,6 +949,8 @@
<string name="msg_mf_error_past_expiry">"Expiry date cannot be in the past!"</string>
<string name="msg_mf_subkey_revoke">"Revoking subkey %s"</string>
<string name="msg_mf_subkey_strip">"Stripping subkey %s"</string>
<string name="msg_mf_keytocard_start">"Moving subkey %s to smart card"</string>
<string name="msg_mf_keytocard_finish">"Moved %1$s to card %2$s"</string>
<string name="msg_mf_success">"Keyring successfully modified"</string>
<string name="msg_mf_uid_add">"Adding user ID %s"</string>
<string name="msg_mf_uid_primary">"Changing primary user ID to %s"</string>
@ -1213,6 +1222,8 @@
<string name="first_time_import_key">"Import key from file"</string>
<string name="first_time_yubikey">"Use YubiKey NEO"</string>
<string name="first_time_skip">"Skip Setup"</string>
<string name="first_time_blank_smartcard_title">"Blank Smart Card / Yubikey Detected"</string>
<string name="first_time_blank_smartcard_message">"Would you like to generate a smart card compatible key?"</string>
<!-- unsorted -->
<string name="section_certifier_id">"Certifier"</string>