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SecurityTokenConnection code style

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This commit is contained in:
Vincent Breitmoser
2018-01-12 15:44:23 +01:00
parent 7212148913
commit bb2b37cff6
4 changed files with 71 additions and 69 deletions
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129
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/SecurityTokenConnection.java
View File

@@ -48,26 +48,27 @@ public class SecurityTokenConnection {
private static SecurityTokenConnection sCachedInstance;
@NonNull
private final Transport mTransport;
private final Transport transport;
@Nullable
private final Passphrase mPin;
private final Passphrase cachedPin;
private final OpenPgpCommandApduFactory commandFactory;
private TokenType tokenType;
private CardCapabilities mCardCapabilities;
private OpenPgpCapabilities mOpenPgpCapabilities;
private SecureMessaging mSecureMessaging;
private CardCapabilities cardCapabilities;
private OpenPgpCapabilities openPgpCapabilities;
private boolean mPw1ValidatedForSignature;
private boolean mPw1ValidatedForDecrypt; // Mode 82 does other things; consider renaming?
private boolean mPw3Validated;
private SecureMessaging secureMessaging;
private boolean isPw1ValidatedForSignature; // Mode 81
private boolean isPw1ValidatedForOther; // Mode 82
private boolean isPw3Validated;
public static SecurityTokenConnection getInstanceForTransport(
@NonNull Transport transport, @Nullable Passphrase pin) {
if (sCachedInstance == null || !sCachedInstance.isPersistentConnectionAllowed() ||
!sCachedInstance.isConnected() || !sCachedInstance.mTransport.equals(transport) ||
(pin != null && !pin.equals(sCachedInstance.mPin))) {
!sCachedInstance.isConnected() || !sCachedInstance.transport.equals(transport) ||
(pin != null && !pin.equals(sCachedInstance.cachedPin))) {
sCachedInstance = new SecurityTokenConnection(transport, pin, new OpenPgpCommandApduFactory());
}
return sCachedInstance;
@@ -81,14 +82,14 @@ public class SecurityTokenConnection {
@VisibleForTesting
SecurityTokenConnection(@NonNull Transport transport, @Nullable Passphrase pin,
OpenPgpCommandApduFactory commandFactory) {
this.mTransport = transport;
this.mPin = pin;
this.transport = transport;
this.cachedPin = pin;
this.commandFactory = commandFactory;
}
OpenPgpCapabilities getOpenPgpCapabilities() {
return mOpenPgpCapabilities;
return openPgpCapabilities;
}
OpenPgpCommandApduFactory getCommandFactory() {
@@ -96,8 +97,8 @@ public class SecurityTokenConnection {
}
void maybeInvalidatePw1() {
if (!mOpenPgpCapabilities.isPw1ValidForMultipleSignatures()) {
mPw1ValidatedForSignature = false;
if (!openPgpCapabilities.isPw1ValidForMultipleSignatures()) {
isPw1ValidatedForSignature = false;
}
}
@@ -128,10 +129,10 @@ public class SecurityTokenConnection {
@VisibleForTesting
void connectToDevice(Context context) throws IOException {
// Connect on transport layer
mTransport.connect();
transport.connect();
// dummy instance for initial communicate() calls
mCardCapabilities = new CardCapabilities();
cardCapabilities = new CardCapabilities();
determineTokenType();
@@ -144,15 +145,15 @@ public class SecurityTokenConnection {
refreshConnectionCapabilities();
mPw1ValidatedForSignature = false;
mPw1ValidatedForDecrypt = false;
mPw3Validated = false;
isPw1ValidatedForSignature = false;
isPw1ValidatedForOther = false;
isPw3Validated = false;
if (mOpenPgpCapabilities.isHasSCP11bSM()) {
if (openPgpCapabilities.isHasSCP11bSM()) {
try {
SCP11bSecureMessaging.establish(this, context, commandFactory);
} catch (SecureMessagingException e) {
mSecureMessaging = null;
secureMessaging = null;
Log.e(Constants.TAG, "failed to establish secure messaging", e);
}
}
@@ -160,7 +161,7 @@ public class SecurityTokenConnection {
@VisibleForTesting
void determineTokenType() throws IOException {
tokenType = mTransport.getTokenTypeIfAvailable();
tokenType = transport.getTokenTypeIfAvailable();
if (tokenType != null) {
return;
}
@@ -192,12 +193,12 @@ public class SecurityTokenConnection {
@VisibleForTesting
void setConnectionCapabilities(OpenPgpCapabilities openPgpCapabilities) throws IOException {
this.mOpenPgpCapabilities = openPgpCapabilities;
this.mCardCapabilities = new CardCapabilities(openPgpCapabilities.getHistoricalBytes());
this.openPgpCapabilities = openPgpCapabilities;
this.cardCapabilities = new CardCapabilities(openPgpCapabilities.getHistoricalBytes());
}
public void resetPin(byte[] newPin, Passphrase adminPin) throws IOException {
if (!mPw3Validated) {
if (!isPw3Validated) {
verifyAdminPin(adminPin);
}
@@ -236,7 +237,7 @@ public class SecurityTokenConnection {
CommandApdu changePin = commandFactory.createChangePw3Command(pin, newAdminPin);
ResponseApdu response = communicate(changePin);
mPw3Validated = false;
isPw3Validated = false;
if (!response.isSuccess()) {
throw new CardException("Failed to change PIN", response.getSw());
@@ -247,35 +248,35 @@ public class SecurityTokenConnection {
* Verifies the user's PW1 with the appropriate mode.
*/
void verifyPinForSignature() throws IOException {
if (mPw1ValidatedForSignature) {
if (isPw1ValidatedForSignature) {
return;
}
if (mPin == null) {
if (cachedPin == null) {
throw new IllegalStateException("Connection not initialized with Pin!");
}
byte[] pin = mPin.toStringUnsafe().getBytes();
byte[] pin = cachedPin.toStringUnsafe().getBytes();
ResponseApdu response = communicate(commandFactory.createVerifyPw1ForSignatureCommand(pin));
if (!response.isSuccess()) {
throw new CardException("Bad PIN!", response.getSw());
}
mPw1ValidatedForSignature = true;
isPw1ValidatedForSignature = true;
}
/**
* Verifies the user's PW1 with the appropriate mode.
*/
void verifyPinForOther() throws IOException {
if (mPw1ValidatedForDecrypt) {
if (isPw1ValidatedForOther) {
return;
}
if (mPin == null) {
if (cachedPin == null) {
throw new IllegalStateException("Connection not initialized with Pin!");
}
byte[] pin = mPin.toStringUnsafe().getBytes();
byte[] pin = cachedPin.toStringUnsafe().getBytes();
// Command APDU for VERIFY command (page 32)
ResponseApdu response = communicate(commandFactory.createVerifyPw1ForOtherCommand(pin));
@@ -283,14 +284,14 @@ public class SecurityTokenConnection {
throw new CardException("Bad PIN!", response.getSw());
}
mPw1ValidatedForDecrypt = true;
isPw1ValidatedForOther = true;
}
/**
* Verifies the user's PW1 or PW3 with the appropriate mode.
*/
void verifyAdminPin(Passphrase adminPin) throws IOException {
if (mPw3Validated) {
if (isPw3Validated) {
return;
}
// Command APDU for VERIFY command (page 32)
@@ -300,7 +301,7 @@ public class SecurityTokenConnection {
throw new CardException("Bad PIN!", response.getSw());
}
mPw3Validated = true;
isPw3Validated = true;
}
/**
@@ -310,7 +311,7 @@ public class SecurityTokenConnection {
* @return The fingerprints of all subkeys in a contiguous byte array.
*/
public byte[] getFingerprints() throws IOException {
return mOpenPgpCapabilities.getFingerprints();
return openPgpCapabilities.getFingerprints();
}
/**
@@ -319,11 +320,11 @@ public class SecurityTokenConnection {
* @return Seven bytes in fixed format, plus 0x9000 status word at the end.
*/
private byte[] getPwStatusBytes() throws IOException {
return mOpenPgpCapabilities.getPwStatusBytes();
return openPgpCapabilities.getPwStatusBytes();
}
public byte[] getAid() throws IOException {
return mOpenPgpCapabilities.getAid();
return openPgpCapabilities.getAid();
}
public String getUrl() throws IOException {
@@ -353,9 +354,9 @@ public class SecurityTokenConnection {
* @throws IOException
*/
ResponseApdu communicate(CommandApdu apdu) throws IOException {
if ((mSecureMessaging != null) && mSecureMessaging.isEstablished()) {
if ((secureMessaging != null) && secureMessaging.isEstablished()) {
try {
apdu = mSecureMessaging.encryptAndSign(apdu);
apdu = secureMessaging.encryptAndSign(apdu);
} catch (SecureMessagingException e) {
clearSecureMessaging();
throw new IOException("secure messaging encrypt/sign failure : " + e.getMessage());
@@ -364,16 +365,16 @@ public class SecurityTokenConnection {
ResponseApdu lastResponse = null;
// Transmit
if (mCardCapabilities.hasExtended()) {
lastResponse = mTransport.transceive(apdu);
if (cardCapabilities.hasExtended()) {
lastResponse = transport.transceive(apdu);
} else if (commandFactory.isSuitableForShortApdu(apdu)) {
CommandApdu shortApdu = commandFactory.createShortApdu(apdu);
lastResponse = mTransport.transceive(shortApdu);
} else if (mCardCapabilities.hasChaining()) {
lastResponse = transport.transceive(shortApdu);
} else if (cardCapabilities.hasChaining()) {
List<CommandApdu> chainedApdus = commandFactory.createChainedApdus(apdu);
for (int i = 0, totalCommands = chainedApdus.size(); i < totalCommands; i++) {
CommandApdu chainedApdu = chainedApdus.get(i);
lastResponse = mTransport.transceive(chainedApdu);
lastResponse = transport.transceive(chainedApdu);
boolean isLastCommand = (i == totalCommands - 1);
if (!isLastCommand && !lastResponse.isSuccess()) {
@@ -393,7 +394,7 @@ public class SecurityTokenConnection {
while (lastResponse.getSw1() == APDU_SW1_RESPONSE_AVAILABLE) {
// GET RESPONSE ISO/IEC 7816-4 par.7.6.1
CommandApdu getResponse = commandFactory.createGetResponseCommand(lastResponse.getSw2());
lastResponse = mTransport.transceive(getResponse);
lastResponse = transport.transceive(getResponse);
result.write(lastResponse.getData());
}
@@ -402,9 +403,9 @@ public class SecurityTokenConnection {
lastResponse = ResponseApdu.fromBytes(result.toByteArray());
if ((mSecureMessaging != null) && mSecureMessaging.isEstablished()) {
if ((secureMessaging != null) && secureMessaging.isEstablished()) {
try {
lastResponse = mSecureMessaging.verifyAndDecrypt(lastResponse);
lastResponse = secureMessaging.verifyAndDecrypt(lastResponse);
} catch (SecureMessagingException e) {
clearSecureMessaging();
throw new IOException("secure messaging verify/decrypt failure : " + e.getMessage());
@@ -433,7 +434,7 @@ public class SecurityTokenConnection {
throw new IOException("Invalid key slot");
}
if (!mPw3Validated) {
if (!isPw3Validated) {
verifyAdminPin(adminPin);
}
@@ -516,12 +517,12 @@ public class SecurityTokenConnection {
}
public boolean isPersistentConnectionAllowed() {
return mTransport.isPersistentConnectionAllowed() &&
(mSecureMessaging == null || !mSecureMessaging.isEstablished());
return transport.isPersistentConnectionAllowed() &&
(secureMessaging == null || !secureMessaging.isEstablished());
}
public boolean isConnected() {
return mTransport.isConnected();
return transport.isConnected();
}
public TokenType getTokenType() {
@@ -529,15 +530,15 @@ public class SecurityTokenConnection {
}
public void clearSecureMessaging() {
if (mSecureMessaging != null) {
mSecureMessaging.clearSession();
if (secureMessaging != null) {
secureMessaging.clearSession();
}
mSecureMessaging = null;
secureMessaging = null;
}
void setSecureMessaging(final SecureMessaging sm) {
void setSecureMessaging(SecureMessaging sm) {
clearSecureMessaging();
mSecureMessaging = sm;
secureMessaging = sm;
}
public SecurityTokenInfo getTokenInfo() throws IOException {
@@ -554,18 +555,12 @@ public class SecurityTokenConnection {
String userId = getUserId();
String url = getUrl();
byte[] pwInfo = getPwStatusBytes();
boolean hasLifeCycleManagement = mCardCapabilities.hasLifeCycleManagement();
boolean hasLifeCycleManagement = cardCapabilities.hasLifeCycleManagement();
TransportType transportType = mTransport.getTransportType();
TransportType transportType = transport.getTransportType();
return SecurityTokenInfo
.create(transportType, tokenType, fingerprints, aid, userId, url, pwInfo[4], pwInfo[6],
hasLifeCycleManagement);
}
public static double parseOpenPgpVersion(final byte[] aid) {
float minv = aid[7];
while (minv > 0) minv /= 10.0;
return aid[6] + minv;
}
}

7
OpenKeychain/src/main/java/org/sufficientlysecure/keychain/securitytoken/SecurityTokenInfo.java
View File

@@ -166,6 +166,13 @@ public abstract class SecurityTokenInfo implements Parcelable {
return Version.create(matcher.group(1));
}
public double getOpenPgpVersion() {
byte[] aid = getAid();
float minv = aid[7];
while (minv > 0) minv /= 10.0;
return aid[6] + minv;
}
@AutoValue
public static abstract class Version implements Comparable<Version> {