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add initial satochip card support

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This commit is contained in:
Craig Raw 2023-10-31 09:56:31 +01:00
parent 24578dcf88
commit ee6589991d
27 changed files with 2268 additions and 33 deletions
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2
drongo

@ -1 +1 @@
Subproject commit 30aff119081a4a13f931ea6625f69d7974addb04
Subproject commit 12db57c8d75c6f9eb96a8da89e80139850cc450b

91
src/main/java/com/sparrowwallet/sparrow/control/CardImportPane.java
View file

@ -4,8 +4,7 @@ import com.google.common.base.Throwables;
import com.sparrowwallet.drongo.KeyDerivation;
import com.sparrowwallet.drongo.crypto.ChildNumber;
import com.sparrowwallet.drongo.protocol.Sha256Hash;
import com.sparrowwallet.drongo.wallet.Keystore;
import com.sparrowwallet.drongo.wallet.Wallet;
import com.sparrowwallet.drongo.wallet.*;
import com.sparrowwallet.sparrow.AppServices;
import com.sparrowwallet.sparrow.EventManager;
import com.sparrowwallet.sparrow.event.KeystoreImportEvent;
@ -36,6 +35,7 @@ import org.slf4j.LoggerFactory;
import javax.smartcardio.CardException;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Optional;
import static com.sparrowwallet.sparrow.io.CardApi.isReaderAvailable;
@ -74,21 +74,21 @@ public class CardImportPane extends TitledDescriptionPane {
return;
}
if(pin.get().length() < 6) {
setDescription(pin.get().isEmpty() ? "Enter PIN code" : "PIN code too short");
setContent(getPinAndDerivationEntry());
showHideLink.setVisible(false);
setExpanded(true);
importButton.setDisable(false);
return;
}
StringProperty messageProperty = new SimpleStringProperty();
messageProperty.addListener((observable, oldValue, newValue) -> {
Platform.runLater(() -> setDescription(newValue));
});
try {
if(pin.get().length() < importer.getWalletModel().getMinPinLength()) {
setDescription(pin.get().isEmpty() ? (!importer.getWalletModel().hasDefaultPin() && !importer.isInitialized() ? "Choose a PIN code" : "Enter PIN code") : "PIN code too short");
setContent(getPinAndDerivationEntry());
showHideLink.setVisible(false);
setExpanded(true);
importButton.setDisable(false);
return;
}
if(!importer.isInitialized()) {
setDescription("Card not initialized");
setContent(getInitializationPanel(messageProperty));
@ -121,6 +121,75 @@ public class CardImportPane extends TitledDescriptionPane {
}
private Node getInitializationPanel(StringProperty messageProperty) {
if(importer.getWalletModel().requiresSeedInitialization()) {
return getSeedInitializationPanel(messageProperty);
}
return getEntropyInitializationPanel(messageProperty);
}
private Node getSeedInitializationPanel(StringProperty messageProperty) {
VBox confirmationBox = new VBox(5);
CustomPasswordField confirmationPin = new ViewPasswordField();
confirmationPin.setPromptText("Re-enter chosen PIN");
confirmationBox.getChildren().add(confirmationPin);
Button initializeButton = new Button("Initialize");
initializeButton.setDefaultButton(true);
initializeButton.setOnAction(event -> {
initializeButton.setDisable(true);
if(!pin.get().equals(confirmationPin.getText())) {
setError("PIN Error", "The confirmation PIN did not match");
return;
}
int pinSize = pin.get().length();
if(pinSize < importer.getWalletModel().getMinPinLength() || pinSize > importer.getWalletModel().getMaxPinLength()) {
setError("PIN Error", "PIN length must be between " + importer.getWalletModel().getMinPinLength() + " and " + importer.getWalletModel().getMaxPinLength() + " characters");
return;
}
SeedEntryDialog seedEntryDialog = new SeedEntryDialog(importer.getWalletModel().toDisplayString() + " Seed Words", 12);
seedEntryDialog.initOwner(this.getScene().getWindow());
Optional<List<String>> optWords = seedEntryDialog.showAndWait();
if(optWords.isPresent()) {
try {
List<String> mnemonicWords = optWords.get();
Bip39MnemonicCode.INSTANCE.check(mnemonicWords);
DeterministicSeed seed = new DeterministicSeed(mnemonicWords, "", System.currentTimeMillis(), DeterministicSeed.Type.BIP39);
byte[] seedBytes = seed.getSeedBytes();
CardInitializationService cardInitializationService = new CardInitializationService(importer, pin.get(), seedBytes, messageProperty);
cardInitializationService.setOnSucceeded(successEvent -> {
AppServices.showSuccessDialog("Card Initialized", "The card was successfully initialized.\n\nYou can now import the keystore.");
setDescription("Leave card on reader");
setExpanded(false);
importButton.setDisable(false);
});
cardInitializationService.setOnFailed(failEvent -> {
log.error("Error initializing card", failEvent.getSource().getException());
AppServices.showErrorDialog("Card Initialization Failed", "The card was not initialized.\n\n" + failEvent.getSource().getException().getMessage());
initializeButton.setDisable(false);
});
cardInitializationService.start();
} catch(MnemonicException e) {
log.error("Invalid seed entered", e);
AppServices.showErrorDialog("Invalid seed entered", "The seed was invalid.\n\n" + e.getMessage());
initializeButton.setDisable(false);
}
} else {
initializeButton.setDisable(false);
}
});
HBox contentBox = new HBox(20);
contentBox.getChildren().addAll(confirmationBox, initializeButton);
contentBox.setPadding(new Insets(10, 30, 10, 30));
HBox.setHgrow(confirmationBox, Priority.ALWAYS);
return contentBox;
}
private Node getEntropyInitializationPanel(StringProperty messageProperty) {
VBox initTypeBox = new VBox(5);
RadioButton automatic = new RadioButton("Automatic (Recommended)");
RadioButton advanced = new RadioButton("Advanced");

17
src/main/java/com/sparrowwallet/sparrow/control/CardPinDialog.java
View file

@ -1,5 +1,6 @@
package com.sparrowwallet.sparrow.control;
import com.sparrowwallet.drongo.wallet.WalletModel;
import com.sparrowwallet.sparrow.AppServices;
import javafx.application.Platform;
import javafx.beans.binding.Bindings;
@ -22,7 +23,7 @@ public class CardPinDialog extends Dialog<CardPinDialog.CardPinChange> {
private final CheckBox backupFirst;
private final ButtonType okButtonType;
public CardPinDialog(boolean backupOnly) {
public CardPinDialog(WalletModel walletModel, boolean backupOnly) {
this.existingPin = new ViewPasswordField();
this.newPin = new ViewPasswordField();
this.newPinConfirm = new ViewPasswordField();
@ -71,7 +72,11 @@ public class CardPinDialog extends Dialog<CardPinDialog.CardPinChange> {
if(backupOnly) {
fieldset.getChildren().addAll(currentField);
} else {
fieldset.getChildren().addAll(currentField, newField, confirmField, backupField);
fieldset.getChildren().addAll(currentField, newField, confirmField);
}
if(walletModel.supportsBackup()) {
fieldset.getChildren().add(backupField);
}
form.getChildren().add(fieldset);
@ -80,8 +85,8 @@ public class CardPinDialog extends Dialog<CardPinDialog.CardPinChange> {
ValidationSupport validationSupport = new ValidationSupport();
Platform.runLater( () -> {
validationSupport.setValidationDecorator(new StyleClassValidationDecoration());
validationSupport.registerValidator(existingPin, (Control c, String newValue) -> ValidationResult.fromErrorIf(c, "Incorrect PIN length", existingPin.getText().length() < 6 || existingPin.getText().length() > 32));
validationSupport.registerValidator(newPin, (Control c, String newValue) -> ValidationResult.fromErrorIf(c, "Incorrect PIN length", newPin.getText().length() < 6 || newPin.getText().length() > 32));
validationSupport.registerValidator(existingPin, (Control c, String newValue) -> ValidationResult.fromErrorIf(c, "Incorrect PIN length", existingPin.getText().length() < walletModel.getMinPinLength() || existingPin.getText().length() > walletModel.getMaxPinLength()));
validationSupport.registerValidator(newPin, (Control c, String newValue) -> ValidationResult.fromErrorIf(c, "Incorrect PIN length", newPin.getText().length() < walletModel.getMinPinLength() || newPin.getText().length() > walletModel.getMaxPinLength()));
validationSupport.registerValidator(newPinConfirm, (Control c, String newValue) -> ValidationResult.fromErrorIf(c, "PIN confirmation does not match", !newPinConfirm.getText().equals(newPin.getText())));
});
@ -89,8 +94,8 @@ public class CardPinDialog extends Dialog<CardPinDialog.CardPinChange> {
dialogPane.getButtonTypes().addAll(okButtonType);
Button okButton = (Button) dialogPane.lookupButton(okButtonType);
okButton.setPrefWidth(130);
BooleanBinding isInvalid = Bindings.createBooleanBinding(() -> existingPin.getText().length() < 6 || existingPin.getText().length() > 32
|| newPin.getText().length() < 6 || newPin.getText().length() > 32
BooleanBinding isInvalid = Bindings.createBooleanBinding(() -> existingPin.getText().length() < walletModel.getMinPinLength() || existingPin.getText().length() > walletModel.getMaxPinLength()
|| newPin.getText().length() < walletModel.getMinPinLength() || newPin.getText().length() > walletModel.getMaxPinLength()
|| !newPin.getText().equals(newPinConfirm.getText()),
existingPin.textProperty(), newPin.textProperty(), newPinConfirm.textProperty());
okButton.disableProperty().bind(isInvalid);

77
src/main/java/com/sparrowwallet/sparrow/control/DevicePane.java
View file

@ -673,8 +673,8 @@ public class DevicePane extends TitledDescriptionPane {
try {
CardApi cardApi = CardApi.getCardApi(device.getModel(), pin.get());
if(!cardApi.isInitialized()) {
if(pin.get().length() < 6) {
setDescription(pin.get().isEmpty() ? "Enter PIN code" : "PIN code too short");
if(pin.get().length() < device.getModel().getMinPinLength()) {
setDescription(pin.get().isEmpty() ? (device.getModel().hasDefaultPin() ? "Enter PIN code" : "Choose a PIN code") : "PIN code too short");
setContent(getCardPinEntry(importButton));
showHideLink.setVisible(false);
setExpanded(true);
@ -795,7 +795,7 @@ public class DevicePane extends TitledDescriptionPane {
}
private void handleCardOperation(Service<?> service, ButtonBase operationButton, String operationDescription, boolean pinRequired, EventHandler<WorkerStateEvent> successHandler) {
if(pinRequired && pin.get().length() < 6) {
if(pinRequired && pin.get().length() < device.getModel().getMinPinLength()) {
setDescription(pin.get().isEmpty() ? "Enter PIN code" : "PIN code too short");
setContent(getCardPinEntry(operationButton));
showHideLink.setVisible(false);
@ -940,7 +940,7 @@ public class DevicePane extends TitledDescriptionPane {
try {
CardApi cardApi = CardApi.getCardApi(device.getModel(), pin.get());
if(!cardApi.isInitialized()) {
if(pin.get().length() < 6) {
if(pin.get().length() < device.getModel().getMinPinLength()) {
setDescription(pin.get().isEmpty() ? "Enter PIN code" : "PIN code too short");
setContent(getCardPinEntry(getAddressButton));
showHideLink.setVisible(false);
@ -1047,6 +1047,75 @@ public class DevicePane extends TitledDescriptionPane {
}
private Node getCardInitializationPanel(CardApi cardApi, ButtonBase operationButton, DeviceOperation deviceOperation) {
if(device.getModel().requiresSeedInitialization()) {
return getCardSeedInitializationPanel(cardApi, operationButton, deviceOperation);
}
return getCardEntropyInitializationPanel(cardApi, operationButton, deviceOperation);
}
private Node getCardSeedInitializationPanel(CardApi cardApi, ButtonBase operationButton, DeviceOperation deviceOperation) {
VBox confirmationBox = new VBox(5);
CustomPasswordField confirmationPin = new ViewPasswordField();
confirmationPin.setPromptText("Re-enter chosen PIN");
confirmationBox.getChildren().add(confirmationPin);
Button initializeButton = new Button("Initialize");
initializeButton.setDefaultButton(true);
initializeButton.setOnAction(event -> {
initializeButton.setDisable(true);
if(!pin.get().equals(confirmationPin.getText())) {
setError("PIN Error", "The confirmation PIN did not match");
return;
}
int pinSize = pin.get().length();
if(pinSize < device.getModel().getMinPinLength() || pinSize > device.getModel().getMaxPinLength()) {
setError("PIN Error", "PIN length must be between " + device.getModel().getMinPinLength() + " and " + device.getModel().getMaxPinLength() + " characters");
return;
}
SeedEntryDialog seedEntryDialog = new SeedEntryDialog(device.getModel().toDisplayString() + " Seed Words", 12);
seedEntryDialog.initOwner(this.getScene().getWindow());
Optional<List<String>> optWords = seedEntryDialog.showAndWait();
if(optWords.isPresent()) {
try {
List<String> mnemonicWords = optWords.get();
Bip39MnemonicCode.INSTANCE.check(mnemonicWords);
DeterministicSeed seed = new DeterministicSeed(mnemonicWords, "", System.currentTimeMillis(), DeterministicSeed.Type.BIP39);
byte[] seedBytes = seed.getSeedBytes();
Service<Void> cardInitializationService = cardApi.getInitializationService(seedBytes, messageProperty);
cardInitializationService.setOnSucceeded(successEvent -> {
AppServices.showSuccessDialog("Card Initialized", "The card was successfully initialized.\n\nYou can now import the keystore.");
operationButton.setDisable(false);
setDefaultStatus();
setExpanded(false);
});
cardInitializationService.setOnFailed(failEvent -> {
log.error("Error initializing card", failEvent.getSource().getException());
AppServices.showErrorDialog("Card Initialization Failed", "The card was not initialized.\n\n" + failEvent.getSource().getException().getMessage());
initializeButton.setDisable(false);
});
cardInitializationService.start();
} catch(MnemonicException e) {
log.error("Invalid seed entered", e);
AppServices.showErrorDialog("Invalid seed entered", "The seed was invalid.\n\n" + e.getMessage());
initializeButton.setDisable(false);
}
} else {
initializeButton.setDisable(false);
}
});
HBox contentBox = new HBox(20);
contentBox.getChildren().addAll(confirmationBox, initializeButton);
contentBox.setPadding(new Insets(10, 30, 10, 30));
HBox.setHgrow(confirmationBox, Priority.ALWAYS);
return contentBox;
}
private Node getCardEntropyInitializationPanel(CardApi cardApi, ButtonBase operationButton, DeviceOperation deviceOperation) {
VBox initTypeBox = new VBox(5);
RadioButton automatic = new RadioButton("Automatic (Recommended)");
RadioButton advanced = new RadioButton("Advanced");

22
src/main/java/com/sparrowwallet/sparrow/io/CardApi.java
View file

@ -10,6 +10,7 @@ import com.sparrowwallet.drongo.wallet.Keystore;
import com.sparrowwallet.drongo.wallet.Wallet;
import com.sparrowwallet.drongo.wallet.WalletModel;
import com.sparrowwallet.sparrow.io.ckcard.CkCardApi;
import com.sparrowwallet.sparrow.io.satochip.SatoCardApi;
import javafx.beans.property.StringProperty;
import javafx.concurrent.Service;
import org.controlsfx.tools.Platform;
@ -23,6 +24,7 @@ import javax.smartcardio.TerminalFactory;
import java.io.File;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
@ -34,19 +36,29 @@ public abstract class CardApi {
new File("/usr/local/lib/libpcsclite.so.1"),
new File("/lib/x86_64-linux-gnu/libpcsclite.so.1"),
new File("/lib/aarch64-linux-gnu/libpcsclite.so.1"),
new File("/usr/lib64/libpcsclite.so.1")};
new File("/usr/lib64/libpcsclite.so.1"),
new File("/usr/lib/x86_64-linux-gnu/libpcsclite.so.1")};
private static boolean initialized;
public static List<WalletModel> getConnectedCards() throws CardException {
List<WalletModel> cards = new ArrayList<>();
try {
CkCardApi ckCardApi = new CkCardApi(null, null);
return List.of(ckCardApi.getCardType());
cards.add(ckCardApi.getCardType());
} catch(Exception e) {
//ignore
}
return Collections.emptyList();
try {
SatoCardApi satoCardApi = new SatoCardApi(null, null);
cards.add(satoCardApi.getCardType());
} catch(Exception e) {
//ignore
}
return cards;
}
public static CardApi getCardApi(WalletModel walletModel, String pin) throws CardException {
@ -54,6 +66,10 @@ public abstract class CardApi {
return new CkCardApi(walletModel, pin);
}
if(walletModel == WalletModel.SATOCHIP) {
return new SatoCardApi(walletModel, pin);
}
throw new IllegalArgumentException("Cannot create card API for " + walletModel.toDisplayString());
}

2
src/main/java/com/sparrowwallet/sparrow/io/CardImport.java
View file

@ -6,5 +6,5 @@ import javax.smartcardio.CardException;
public interface CardImport extends ImportExport {
boolean isInitialized() throws CardException;
void initialize(String pin, byte[] chainCode, StringProperty messageProperty) throws CardException;
void initialize(String pin, byte[] entropy, StringProperty messageProperty) throws CardException;
}

4
src/main/java/com/sparrowwallet/sparrow/io/ckcard/CardTransport.java
View file

@ -47,7 +47,7 @@ public class CardTransport {
break;
} catch(CardException e) {
if(!iter.hasNext()) {
log.error(e.getMessage());
log.debug(e.getMessage());
throw e;
}
}
@ -62,7 +62,7 @@ public class CardTransport {
CardChannel cardChannel = connection.getBasicChannel();
ResponseAPDU resp = cardChannel.transmit(new CommandAPDU(0, 0xA4, 4, 0, Utils.hexToBytes(APPID.toUpperCase())));
if(resp.getSW() != SW_OKAY) {
throw new CardException("Card initialization error, response was 0x" + Integer.toHexString(resp.getSW()) + ". Note that only the Tapsigner is currently supported.");
throw new CardException("Card initialization error, response was 0x" + Integer.toHexString(resp.getSW()));
}
return connection;

4
src/main/java/com/sparrowwallet/sparrow/io/ckcard/Tapsigner.java
View file

@ -26,7 +26,7 @@ public class Tapsigner implements KeystoreCardImport {
}
@Override
public void initialize(String pin, byte[] chainCode, StringProperty messageProperty) throws CardException {
public void initialize(String pin, byte[] entropy, StringProperty messageProperty) throws CardException {
if(pin.length() < 6) {
throw new CardException("PIN too short.");
}
@ -43,7 +43,7 @@ public class Tapsigner implements KeystoreCardImport {
throw new IllegalStateException("Card is already initialized.");
}
cardApi.checkWait(cardStatus, new SimpleIntegerProperty(), messageProperty);
cardApi.initialize(0, chainCode);
cardApi.initialize(0, entropy);
} finally {
if(cardApi != null) {
cardApi.disconnect();

139
src/main/java/com/sparrowwallet/sparrow/io/satochip/APDUCommand.java Normal file
View file

@ -0,0 +1,139 @@
package com.sparrowwallet.sparrow.io.satochip;
import com.sparrowwallet.drongo.Utils;
import java.io.ByteArrayOutputStream;
/**
* ISO7816-4 APDU.
*/
public class APDUCommand {
protected int cla;
protected int ins;
protected int p1;
protected int p2;
protected byte[] data;
protected boolean needsLE;
/**
* Constructs an APDU with no response data length field. The data field cannot be null, but can be a zero-length array.
*
* @param cla class byte
* @param ins instruction code
* @param p1 P1 parameter
* @param p2 P2 parameter
* @param data the APDU data
*/
public APDUCommand(int cla, int ins, int p1, int p2, byte[] data) {
this(cla, ins, p1, p2, data, false);
}
/**
* Constructs an APDU with an optional data length field. The data field cannot be null, but can be a zero-length array.
* The LE byte, if sent, is set to 0.
*
* @param cla class byte
* @param ins instruction code
* @param p1 P1 parameter
* @param p2 P2 parameter
* @param data the APDU data
* @param needsLE whether the LE byte should be sent or not
*/
public APDUCommand(int cla, int ins, int p1, int p2, byte[] data, boolean needsLE) {
this.cla = cla & 0xff;
this.ins = ins & 0xff;
this.p1 = p1 & 0xff;
this.p2 = p2 & 0xff;
this.data = data;
this.needsLE = needsLE;
}
/**
* Serializes the APDU in order to send it to the card.
*
* @return the byte array representation of the APDU
*/
public byte[] serialize() {
ByteArrayOutputStream out = new ByteArrayOutputStream();
out.write(this.cla);
out.write(this.ins);
out.write(this.p1);
out.write(this.p2);
out.write(this.data.length);
out.write(this.data, 0, this.data.length);
if(this.needsLE) {
out.write(0); // Response length
}
return out.toByteArray();
}
/**
* Serializes the APDU to human readable hex string format
*
* @return the hex string representation of the APDU
*/
public String toHexString() {
byte[] raw = this.serialize();
if(raw == null) {
return "";
}
return Utils.bytesToHex(raw);
}
/**
* Returns the CLA of the APDU
*
* @return the CLA of the APDU
*/
public int getCla() {
return cla;
}
/**
* Returns the INS of the APDU
*
* @return the INS of the APDU
*/
public int getIns() {
return ins;
}
/**
* Returns the P1 of the APDU
*
* @return the P1 of the APDU
*/
public int getP1() {
return p1;
}
/**
* Returns the P2 of the APDU
*
* @return the P2 of the APDU
*/
public int getP2() {
return p2;
}
/**
* Returns the data field of the APDU
*
* @return the data field of the APDU
*/
public byte[] getData() {
return data;
}
/**
* Returns whether LE is sent or not.
*
* @return whether LE is sent or not
*/
public boolean getNeedsLE() {
return this.needsLE;
}
}

119
src/main/java/com/sparrowwallet/sparrow/io/satochip/APDUResponse.java Normal file
View file

@ -0,0 +1,119 @@
package com.sparrowwallet.sparrow.io.satochip;
import com.sparrowwallet.drongo.Utils;
/**
* ISO7816-4 APDU response.
*/
public class APDUResponse {
public static final int SW_OK = 0x9000;
public static final int SW_SECURITY_CONDITION_NOT_SATISFIED = 0x6982;
public static final int SW_AUTHENTICATION_METHOD_BLOCKED = 0x6983;
public static final int SW_CARD_LOCKED = 0x6283;
public static final int SW_REFERENCED_DATA_NOT_FOUND = 0x6A88;
public static final int SW_CONDITIONS_OF_USE_NOT_SATISFIED = 0x6985; // applet may be already installed
public static final int SW_WRONG_PIN_MASK = 0x63C0;
public static final String HEXES = "0123456789ABCDEF";
private final byte[] apdu;
private byte[] data;
private int sw;
private int sw1;
private int sw2;
/**
* Creates an APDU object by parsing the raw response from the card.
*
* @param apdu the raw response from the card.
*/
public APDUResponse(byte[] apdu) {
if(apdu.length < 2) {
throw new IllegalArgumentException("APDU response must be at least 2 bytes");
}
this.apdu = apdu;
this.parse();
}
public APDUResponse(byte[] data, byte sw1, byte sw2) {
byte[] apdu = new byte[data.length + 2];
System.arraycopy(data, 0, apdu, 0, data.length);
apdu[data.length] = sw1;
apdu[data.length + 1] = sw2;
this.apdu = apdu;
this.parse();
}
/**
* Parses the APDU response, separating the response data from SW.
*/
private void parse() {
int length = this.apdu.length;
this.sw1 = this.apdu[length - 2] & 0xff;
this.sw2 = this.apdu[length - 1] & 0xff;
this.sw = (this.sw1 << 8) | this.sw2;
this.data = new byte[length - 2];
System.arraycopy(this.apdu, 0, this.data, 0, length - 2);
}
/**
* Returns the data field of this APDU.
*
* @return the data field of this APDU
*/
public byte[] getData() {
return this.data;
}
/**
* Returns the Status Word.
*
* @return the status word
*/
public int getSw() {
return this.sw;
}
/**
* Returns the SW1 byte
*
* @return SW1
*/
public int getSw1() {
return this.sw1;
}
/**
* Returns the SW2 byte
*
* @return SW2
*/
public int getSw2() {
return this.sw2;
}
/**
* Returns the raw unparsed response.
*
* @return raw APDU data
*/
public byte[] getBytes() {
return this.apdu;
}
/**
* Serializes the APDU to human readable hex string format
*
* @return the hex string representation of the APDU
*/
public String toHexString() {
byte[] raw = this.apdu;
if(raw == null) {
return "";
}
return Utils.bytesToHex(raw);
}
}

214
src/main/java/com/sparrowwallet/sparrow/io/satochip/Constants.java Normal file
View file

@ -0,0 +1,214 @@
package com.sparrowwallet.sparrow.io.satochip;
public final class Constants {
// Prevents instantiation of class
private Constants() {
}
/****************************************
* Instruction codes *
****************************************/
public static final byte CLA = (byte) 0xB0;
// Applet initialization
public static final byte INS_SETUP = (byte) 0x2A;
// Keys' use and management
public static final byte INS_IMPORT_KEY = (byte) 0x32;
public static final byte INS_RESET_KEY = (byte) 0x33;
public static final byte INS_GET_PUBLIC_FROM_PRIVATE = (byte) 0x35;
// External authentication
public static final byte INS_CREATE_PIN = (byte) 0x40; //TODO: remove?
public static final byte INS_VERIFY_PIN = (byte) 0x42;
public static final byte INS_CHANGE_PIN = (byte) 0x44;
public static final byte INS_UNBLOCK_PIN = (byte) 0x46;
public static final byte INS_LOGOUT_ALL = (byte) 0x60;
// Status information
public static final byte INS_LIST_PINS = (byte) 0x48;
public static final byte INS_GET_STATUS = (byte) 0x3C;
public static final byte INS_CARD_LABEL = (byte) 0x3D;
// HD wallet
public static final byte INS_BIP32_IMPORT_SEED = (byte) 0x6C;
public static final byte INS_BIP32_RESET_SEED = (byte) 0x77;
public static final byte INS_BIP32_GET_AUTHENTIKEY = (byte) 0x73;
public static final byte INS_BIP32_SET_AUTHENTIKEY_PUBKEY = (byte) 0x75;
public static final byte INS_BIP32_GET_EXTENDED_KEY = (byte) 0x6D;
public static final byte INS_BIP32_SET_EXTENDED_PUBKEY = (byte) 0x74;
public static final byte INS_SIGN_MESSAGE = (byte) 0x6E;
public static final byte INS_SIGN_SHORT_MESSAGE = (byte) 0x72;
public static final byte INS_SIGN_TRANSACTION = (byte) 0x6F;
public static final byte INS_PARSE_TRANSACTION = (byte) 0x71;
public static final byte INS_CRYPT_TRANSACTION_2FA = (byte) 0x76;
public static final byte INS_SET_2FA_KEY = (byte) 0x79;
public static final byte INS_RESET_2FA_KEY = (byte) 0x78;
public static final byte INS_SIGN_TRANSACTION_HASH = (byte) 0x7A;
// secure channel
public static final byte INS_INIT_SECURE_CHANNEL = (byte) 0x81;
public static final byte INS_PROCESS_SECURE_CHANNEL = (byte) 0x82;
// secure import from SeedKeeper
public static final byte INS_IMPORT_ENCRYPTED_SECRET = (byte) 0xAC;
public static final byte INS_IMPORT_TRUSTED_PUBKEY = (byte) 0xAA;
public static final byte INS_EXPORT_TRUSTED_PUBKEY = (byte) 0xAB;
public static final byte INS_EXPORT_AUTHENTIKEY = (byte) 0xAD;
// Personalization PKI support
public static final byte INS_IMPORT_PKI_CERTIFICATE = (byte) 0x92;
public static final byte INS_EXPORT_PKI_CERTIFICATE = (byte) 0x93;
public static final byte INS_SIGN_PKI_CSR = (byte) 0x94;
public static final byte INS_EXPORT_PKI_PUBKEY = (byte) 0x98;
public static final byte INS_LOCK_PKI = (byte) 0x99;
public static final byte INS_CHALLENGE_RESPONSE_PKI = (byte) 0x9A;
// reset to factory settings
public static final byte INS_RESET_TO_FACTORY = (byte) 0xFF;
/****************************************
* Error codes *
****************************************/
/**
* Entered PIN is not correct
*/
public static final short SW_PIN_FAILED = (short) 0x63C0;// includes number of tries remaining
///** DEPRECATED - Entered PIN is not correct */
//public static final short SW_AUTH_FAILED = (short) 0x9C02;
/**
* Required operation is not allowed in actual circumstances
*/
public static final short SW_OPERATION_NOT_ALLOWED = (short) 0x9C03;
/**
* Required setup is not not done
*/
public static final short SW_SETUP_NOT_DONE = (short) 0x9C04;
/**
* Required setup is already done
*/
public static final short SW_SETUP_ALREADY_DONE = (short) 0x9C07;
/**
* Required feature is not (yet) supported
*/
public static final short SW_UNSUPPORTED_FEATURE = (short) 0x9C05;
/**
* Required operation was not authorized because of a lack of privileges
*/
public static final short SW_UNAUTHORIZED = (short) 0x9C06;
/**
* Algorithm specified is not correct
*/
public static final short SW_INCORRECT_ALG = (short) 0x9C09;
/**
* There have been memory problems on the card
*/
public static final short SW_NO_MEMORY_LEFT = (short) 0x9C01;
///** DEPRECATED - Required object is missing */
//public static final short SW_OBJECT_NOT_FOUND= (short) 0x9C07;
/**
* Incorrect P1 parameter
*/
public static final short SW_INCORRECT_P1 = (short) 0x9C10;
/**
* Incorrect P2 parameter
*/
public static final short SW_INCORRECT_P2 = (short) 0x9C11;
/**
* Invalid input parameter to command
*/
public static final short SW_INVALID_PARAMETER = (short) 0x9C0F;
/**
* Eckeys initialized
*/
public static final short SW_ECKEYS_INITIALIZED_KEY = (short) 0x9C1A;
/**
* Verify operation detected an invalid signature
*/
public static final short SW_SIGNATURE_INVALID = (short) 0x9C0B;
/**
* Operation has been blocked for security reason
*/
public static final short SW_IDENTITY_BLOCKED = (short) 0x9C0C;
/**
* For debugging purposes
*/
public static final short SW_INTERNAL_ERROR = (short) 0x9CFF;
/**
* Very low probability error
*/
public static final short SW_BIP32_DERIVATION_ERROR = (short) 0x9C0E;
/**
* Incorrect initialization of method
*/
public static final short SW_INCORRECT_INITIALIZATION = (short) 0x9C13;
/**
* Bip32 seed is not initialized
*/
public static final short SW_BIP32_UNINITIALIZED_SEED = (short) 0x9C14;
/**
* Bip32 seed is already initialized (must be reset before change)
*/
public static final short SW_BIP32_INITIALIZED_SEED = (short) 0x9C17;
//** DEPRECATED - Bip32 authentikey pubkey is not initialized*/
//public static final short SW_BIP32_UNINITIALIZED_AUTHENTIKEY_PUBKEY= (short) 0x9C16;
/**
* Incorrect transaction hash
*/
public static final short SW_INCORRECT_TXHASH = (short) 0x9C15;
/**
* 2FA already initialized
*/
public static final short SW_2FA_INITIALIZED_KEY = (short) 0x9C18;
/**
* 2FA uninitialized
*/
public static final short SW_2FA_UNINITIALIZED_KEY = (short) 0x9C19;
/**
* HMAC errors
*/
public static final short SW_HMAC_UNSUPPORTED_KEYSIZE = (short) 0x9c1E;
public static final short SW_HMAC_UNSUPPORTED_MSGSIZE = (short) 0x9c1F;
/**
* Secure channel
*/
public static final short SW_SECURE_CHANNEL_REQUIRED = (short) 0x9C20;
public static final short SW_SECURE_CHANNEL_UNINITIALIZED = (short) 0x9C21;
public static final short SW_SECURE_CHANNEL_WRONG_IV = (short) 0x9C22;
public static final short SW_SECURE_CHANNEL_WRONG_MAC = (short) 0x9C23;
/**
* Secret data is too long for import
**/
public static final short SW_IMPORTED_DATA_TOO_LONG = (short) 0x9C32;
/**
* Wrong HMAC when importing Secret through Secure import
**/
public static final short SW_SECURE_IMPORT_WRONG_MAC = (short) 0x9C33;
/**
* Wrong Fingerprint when importing Secret through Secure import
**/
public static final short SW_SECURE_IMPORT_WRONG_FINGERPRINT = (short) 0x9C34;
/**
* No Trusted Pubkey when importing Secret through Secure import
**/
public static final short SW_SECURE_IMPORT_NO_TRUSTEDPUBKEY = (short) 0x9C35;
/**
* PKI perso error
*/
public static final short SW_PKI_ALREADY_LOCKED = (short) 0x9C40;
/**
* CARD HAS BEEN RESET TO FACTORY
*/
public static final short SW_RESET_TO_FACTORY = (short) 0xFF00;
/**
* For instructions that have been deprecated
*/
public static final short SW_INS_DEPRECATED = (short) 0x9C26;
/**
* For debugging purposes 2
*/
public static final short SW_DEBUG_FLAG = (short) 0x9FFF;
}

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package com.sparrowwallet.sparrow.io.satochip;
import java.util.StringTokenizer;
/**
* Keypath object to be used with the SatochipCommandSet
*/
public class KeyPath {
private final byte[] data;
/**
* Parses a keypath into a byte array to be used with the SatochipCommandSet object.
* <p>
* A valid string is composed of a minimum of one and a maximum of 11 components separated by "/".
* <p>
* The first component should be "m", indicating the master key.
* <p>
* All other components are positive integers fitting in 31 bit, eventually suffixed by an apostrophe (') sign,
* which indicates an hardened key.
* <p>
* An example of a valid path is "m/44'/0'/0'/0/0"
*
* @param keypath the keypath as a string
*/
public KeyPath(String keypath) {
StringTokenizer tokenizer = new StringTokenizer(keypath, "/");
String sourceOrFirstElement = tokenizer.nextToken(); // m
int componentCount = tokenizer.countTokens();
if(componentCount > 10) {
throw new IllegalArgumentException("Too many components");
}
data = new byte[4 * componentCount];
for(int i = 0; i < componentCount; i++) {
long component = parseComponent(tokenizer.nextToken());
writeComponent(component, i);
}
}
public KeyPath(byte[] data) {
this.data = data;
}
private long parseComponent(String num) {
long sign;
if(num.endsWith("'")) {
sign = 0x80000000L;
num = num.substring(0, (num.length() - 1));
} else {
sign = 0L;
}
if(num.startsWith("+") || num.startsWith("-")) {
throw new NumberFormatException("No sign allowed");
}
return (sign | Long.parseLong(num));
}
private void writeComponent(long component, int i) {
int off = (i * 4);
data[off] = (byte) ((component >> 24) & 0xff);
data[off + 1] = (byte) ((component >> 16) & 0xff);
data[off + 2] = (byte) ((component >> 8) & 0xff);
data[off + 3] = (byte) (component & 0xff);
}
/**
* The byte encoded key path.
*
* @return byte encoded key path
*/
public byte[] getData() {
return data;
}
@Override
public String toString() {
StringBuffer sb = new StringBuffer();
sb.append('m');
for(int i = 0; i < this.data.length; i += 4) {
sb.append('/');
appendComponent(sb, i);
}
return sb.toString();
}
private void appendComponent(StringBuffer sb, int i) {
int num = ((this.data[i] & 0x7f) << 24) | ((this.data[i + 1] & 0xff) << 16) | ((this.data[i + 2] & 0xff) << 8) | (this.data[i + 3] & 0xff);
sb.append(num);
if((this.data[i] & 0x80) == 0x80) {
sb.append('\'');
}
}
}

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src/main/java/com/sparrowwallet/sparrow/io/satochip/SatoCardApi.java Normal file
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package com.sparrowwallet.sparrow.io.satochip;
import com.sparrowwallet.drongo.ExtendedKey;
import com.sparrowwallet.drongo.KeyDerivation;
import com.sparrowwallet.drongo.Utils;
import com.sparrowwallet.drongo.Network;
import com.sparrowwallet.drongo.address.Address;
import com.sparrowwallet.drongo.crypto.ChildNumber;
import com.sparrowwallet.drongo.crypto.ECKey;
import com.sparrowwallet.drongo.crypto.ECDSASignature;
import com.sparrowwallet.drongo.crypto.SchnorrSignature;
import com.sparrowwallet.drongo.protocol.*;
import com.sparrowwallet.drongo.psbt.PSBT;
import com.sparrowwallet.drongo.psbt.PSBTInput;
import com.sparrowwallet.drongo.psbt.PSBTInputSigner;
import com.sparrowwallet.drongo.wallet.*;
import com.sparrowwallet.sparrow.control.CardImportPane;
import com.sparrowwallet.sparrow.io.CardApi;
import javafx.beans.property.StringProperty;
import javafx.concurrent.Service;
import javafx.concurrent.Task;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.smartcardio.*;
import java.util.*;
import java.nio.charset.StandardCharsets;
public class SatoCardApi extends CardApi {
private static final Logger log = LoggerFactory.getLogger(SatoCardApi.class);
private final WalletModel cardType;
private final SatochipCommandSet cardProtocol;
private final String pin;
private String basePath = null;
public SatoCardApi(WalletModel cardType, String pin) throws CardException {
this.cardType = cardType;
this.cardProtocol = new SatochipCommandSet();
this.pin = pin;
}
@Override
public boolean isInitialized() throws CardException {
SatoCardStatus cardStatus = this.getStatus();
return cardStatus.isInitialized(); // setupDone && isSeeded
}
//TODO
@Override
public void initialize(int slot, byte[] seedBytes) throws CardException {
// TODO check device certificate
SatoCardStatus cardStatus = this.getStatus();
APDUResponse rapdu;
if(!cardStatus.isSetupDone()) {
byte maxPinTries = 5;
rapdu = this.cardProtocol.cardSetup(maxPinTries, pin.getBytes(StandardCharsets.UTF_8));
// check ok
}
if(!cardStatus.isSeeded()) {
// check pin
rapdu = this.cardProtocol.cardVerifyPIN(0, pin);
// todo: check PIN response
rapdu = this.cardProtocol.cardBip32ImportSeed(seedBytes);
// check ok
}
}
@Override
public WalletModel getCardType() throws CardException {
return WalletModel.SATOCHIP;
}
//TODO
@Override
public int getCurrentSlot() throws CardException {
throw new CardException("Satochip does not support slots");
}
//TODO
@Override
public ScriptType getDefaultScriptType() {
return ScriptType.P2WPKH;
}
SatoCardStatus getStatus() throws CardException {
return this.cardProtocol.getApplicationStatus();
}
@Override
public Service<Void> getAuthDelayService() throws CardException {
return null;
}
@Override
public boolean requiresBackup() throws CardException {
return false;
}
@Override
public Service<String> getBackupService() {
return null;
}
@Override
public boolean changePin(String newPin) throws CardException {
this.cardProtocol.cardChangePIN((byte) 0, this.pin, newPin);
return true;
}
void setDerivation(List<ChildNumber> derivation) throws CardException {
this.basePath = KeyDerivation.writePath(derivation);
}
@Override
public Service<Void> getInitializationService(byte[] seedBytes, StringProperty messageProperty) {
return new CardInitializationService(seedBytes, messageProperty);
}
@Override
public Service<Keystore> getImportService(List<ChildNumber> derivation, StringProperty messageProperty) {
return new CardImportPane.CardImportService(new Satochip(), pin, derivation, messageProperty);
}
/*
* Satochip derives BIP32 keys based on the fullPath (from masterseed to leaf), not the partial path from a given xpub.
* the basePath (from masterseed to xpub) is only provided in Satochip.java:getKeystore(String pin, List<ChildNumber> derivation, StringProperty messageProperty)
* In SatoCardApi:getKeystore(), no derivation path (i.e. basePath from masterSeed to xpub or relative path) is given and no derivation is reliably available as a object field.
* currently, we try to get the path from this.basePath if available (or use a default value) but it's not reliable enough
*/
@Override
public Keystore getKeystore() throws CardException {
this.cardProtocol.cardVerifyPIN(0, pin);
String keyDerivationString = (this.basePath != null ? this.basePath : getDefaultScriptType().getDefaultDerivationPath());
ExtendedKey.Header xtype = Network.get().getXpubHeader();
String xpub = this.cardProtocol.cardBip32GetXpub(keyDerivationString, xtype);
ExtendedKey extendedKey = ExtendedKey.fromDescriptor(xpub);
String masterFingerprint = Utils.bytesToHex(extendedKey.getKey().getFingerprint());
KeyDerivation keyDerivation = new KeyDerivation(masterFingerprint, keyDerivationString);
Keystore keystore = new Keystore();
keystore.setLabel(WalletModel.SATOCHIP.toDisplayString());
keystore.setKeyDerivation(keyDerivation);
keystore.setSource(KeystoreSource.HW_USB);
keystore.setExtendedPublicKey(extendedKey);
keystore.setWalletModel(WalletModel.SATOCHIP);
return keystore;
}
@Override
public Service<PSBT> getSignService(Wallet wallet, PSBT psbt, StringProperty messageProperty) {
return new SignService(wallet, psbt, messageProperty);
}
void sign(Wallet wallet, PSBT psbt) throws CardException {
Map<PSBTInput, WalletNode> signingNodes = wallet.getSigningNodes(psbt);
for(PSBTInput psbtInput : psbt.getPsbtInputs()) {
if(!psbtInput.isSigned()) {
WalletNode signingNode = signingNodes.get(psbtInput);
String fullPath = null;
List<Keystore> keystores = wallet.getKeystores();
for(int i = 0; i < keystores.size(); i++) {
Keystore keystore = keystores.get(i);
WalletModel walletModel = keystore.getWalletModel();
if(walletModel == WalletModel.SATOCHIP) {
String basePath = keystore.getKeyDerivation().getDerivationPath();
String extendedPath = signingNode.getDerivationPath().substring(1);
fullPath = basePath + extendedPath;
keystore.getPubKey(signingNode);
break;
}
}
psbtInput.sign(new CardPSBTInputSigner(signingNode, fullPath));
}
}
}
@Override
public Service<String> getSignMessageService(String message, ScriptType scriptType, List<ChildNumber> derivation, StringProperty messageProperty) {
return new SignMessageService(message, scriptType, derivation, messageProperty);
}
String signMessage(String message, ScriptType scriptType, List<ChildNumber> derivation) throws CardException {
String fullpath = KeyDerivation.writePath(derivation);
cardProtocol.cardVerifyPIN(0, pin);
// 2FA is optionnal, currently not supported in sparrow as it requires to send 2FA to a mobile app through a server.
SatoCardStatus cardStatus = this.getStatus();
if(cardStatus.needs2FA()) {
throw new CardException("Satochip 2FA is not (yet) supported within Sparrow");
}
// derive the correct key in satochip
APDUResponse rapdu = cardProtocol.cardBip32GetExtendedKey(fullpath);
// recover pubkey
SatochipParser parser = new SatochipParser();
byte[][] extendeKeyBytes = parser.parseBip32GetExtendedKey(rapdu);
ECKey pubkey = ECKey.fromPublicOnly(extendeKeyBytes[0]);
// sign msg
return pubkey.signMessage(message, scriptType, hash -> {
try {
// do the signature with satochip
byte keynbr = (byte) 0xFF;
byte[] chalresponse = null;
APDUResponse rapdu2 = cardProtocol.cardSignTransactionHash(keynbr, hash.getBytes(), chalresponse);
byte[] sigBytes = rapdu2.getData();
return ECDSASignature.decodeFromDER(sigBytes);
} catch(Exception e) {
throw new RuntimeException(e);
}
});
}
@Override
public Service<ECKey> getPrivateKeyService(Integer slot, StringProperty messageProperty) {
throw new UnsupportedOperationException("Satochip does not support private key export");
}
@Override
public Service<Address> getAddressService(StringProperty messageProperty) {
return null;
}
@Override
public void disconnect() {
cardProtocol.cardDisconnect();
}
public class CardInitializationService extends Service<Void> {
private final byte[] seedBytes;
private final StringProperty messageProperty;
public CardInitializationService(byte[] seedBytes, StringProperty messageProperty) {
this.seedBytes = seedBytes;
this.messageProperty = messageProperty;
}
@Override
protected Task<Void> createTask() {
return new Task<>() {
@Override
protected Void call() throws Exception {
if(seedBytes == null) {
throw new CardException("Failed to initialize Satochip - no seed provided");
}
initialize(0, seedBytes);
return null;
}
};
}
}
public class SignService extends Service<PSBT> {
private final Wallet wallet;
private final PSBT psbt;
private final StringProperty messageProperty;
public SignService(Wallet wallet, PSBT psbt, StringProperty messageProperty) {
this.wallet = wallet;
this.psbt = psbt;
this.messageProperty = messageProperty;
}
@Override
protected Task<PSBT> createTask() {
return new Task<>() {
@Override
protected PSBT call() throws Exception {
sign(wallet, psbt);
return psbt;
}
};
}
}
private class CardPSBTInputSigner implements PSBTInputSigner {
private final WalletNode signingNode;
private final String fullPath;
private ECKey pubkey;
// todo: provide derivationpath instead of WalletNode??
public CardPSBTInputSigner(WalletNode signingNode, String fullPath) {
this.signingNode = signingNode;
this.fullPath = fullPath;
}
@Override
public TransactionSignature sign(Sha256Hash hash, SigHash sigHash, TransactionSignature.Type signatureType) {
try {
// 2FA is optional, currently not supported in sparrow as it requires to send 2FA to a mobile app through a server.
SatoCardStatus cardStatus = getStatus();
if(cardStatus.needs2FA()) {
throw new CardException("Satochip 2FA is not (yet) supported within Sparrow");
}
// verify PIN
APDUResponse rapdu0 = cardProtocol.cardVerifyPIN(0, pin);
// derive the correct key in satochip and recover pubkey
APDUResponse rapdu = cardProtocol.cardBip32GetExtendedKey(fullPath);
SatochipParser parser = new SatochipParser();
byte[][] extendeKeyBytes = parser.parseBip32GetExtendedKey(rapdu);
ECKey internalPubkey = ECKey.fromPublicOnly(extendeKeyBytes[0]);
if(signatureType == TransactionSignature.Type.ECDSA) {
// for ECDSA, pubkey is the same as internalPubkey
pubkey = internalPubkey;
// do the signature with satochip
byte keynbr = (byte) 0xFF;
byte[] chalresponse = null;
APDUResponse rapdu2 = cardProtocol.cardSignTransactionHash(keynbr, hash.getBytes(), chalresponse);
byte[] sigBytes = rapdu2.getData();
ECDSASignature ecdsaSig = ECDSASignature.decodeFromDER(sigBytes).toCanonicalised();
TransactionSignature txSig = new TransactionSignature(ecdsaSig, sigHash);
// verify
boolean isCorrect = pubkey.verify(hash, txSig);
return txSig;
} else {
// Satochip supports schnorr signature only for version >= 0.14 !
byte[] versionBytes = cardStatus.getCardVersion();
int protocolVersion = versionBytes[0] * 256 + versionBytes[1];
if(protocolVersion < (256 * 0 + 14)) {
throw new CardException(WalletModel.SATOCHIP.toDisplayString() + " (with version below v0.14) cannot sign Taproot transactions");
}
// tweak the bip32 key according to bip341
byte keynbr = (byte) 0xFF;
byte[] tweak = null;
APDUResponse rapduTweak = cardProtocol.cardTaprootTweakPrivkey(keynbr, tweak);
byte[] tweakedPubkeyBytes = new byte[65];
System.arraycopy(rapduTweak.getData(), 2, tweakedPubkeyBytes, 0, 65);
pubkey = ECKey.fromPublicOnly(tweakedPubkeyBytes);
byte[] chalresponse = null;
APDUResponse rapdu2 = cardProtocol.cardSignSchnorrHash(keynbr, hash.getBytes(), chalresponse);
byte[] sigBytes = rapdu2.getData();
SchnorrSignature schnorrSig = SchnorrSignature.decode(sigBytes);
TransactionSignature txSig = new TransactionSignature(schnorrSig, sigHash);
// verify sig with outputPubkey...
boolean isCorrect2 = pubkey.verify(hash, txSig);
return txSig; //new TransactionSignature(schnorrSig, sigHash);
}
} catch(Exception e) {
throw new RuntimeException(e);
}
}
@Override
public ECKey getPubKey() {
return pubkey;
}
}
public class SignMessageService extends Service<String> {
private final String message;
private final ScriptType scriptType;
private final List<ChildNumber> derivation;
private final StringProperty messageProperty;
public SignMessageService(String message, ScriptType scriptType, List<ChildNumber> derivation, StringProperty messageProperty) {
this.message = message;
this.scriptType = scriptType;
this.derivation = derivation;
this.messageProperty = messageProperty;
}
@Override
protected Task<String> createTask() {
return new Task<>() {
@Override
protected String call() throws Exception {
return signMessage(message, scriptType, derivation);
}
};
}
}
}

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package com.sparrowwallet.sparrow.io.satochip;
/**
* Parses the result of a GET STATUS command retrieving application status.
*/
public class SatoCardStatus {
private boolean setup_done = false;
private boolean is_seeded = false;
private boolean needs_secure_channel = false;
private boolean needs_2FA = false;
private byte protocol_major_version = (byte) 0;
private byte protocol_minor_version = (byte) 0;
private byte applet_major_version = (byte) 0;
private byte applet_minor_version = (byte) 0;
private byte PIN0_remaining_tries = (byte) 0;
private byte PUK0_remaining_tries = (byte) 0;
private byte PIN1_remaining_tries = (byte) 0;
private byte PUK1_remaining_tries = (byte) 0;
private int protocol_version = 0; //(d["protocol_major_version"]<<8)+d["protocol_minor_version"]
/**
* Constructor from TLV data
*
* @param rapdu the TLV data
* @throws IllegalArgumentException if the TLV does not follow the expected format
*/
public SatoCardStatus(APDUResponse rapdu) {
int sw = rapdu.getSw();
if(sw == 0x9000) {
byte[] data = rapdu.getData();
protocol_major_version = data[0];
protocol_minor_version = data[1];
applet_major_version = data[2];
applet_minor_version = data[3];
protocol_version = (protocol_major_version << 8) + protocol_minor_version;
if(data.length >= 8) {
PIN0_remaining_tries = data[4];
PUK0_remaining_tries = data[5];
PIN1_remaining_tries = data[6];
PUK1_remaining_tries = data[7];
needs_2FA = false; //default value
}
if(data.length >= 9) {
needs_2FA = data[8] != 0X00;
}
if(data.length >= 10) {
is_seeded = data[9] != 0X00;
}
if(data.length >= 11) {
setup_done = data[10] != 0X00;
} else {
setup_done = true;
}
if(data.length >= 12) {
needs_secure_channel = data[11] != 0X00;
} else {
needs_secure_channel = false;
needs_2FA = false; //default value
}
} else if(sw == 0x9c04) {
setup_done = false;
is_seeded = false;
needs_secure_channel = false;
} else {
throw new IllegalArgumentException("Invalid getStatus data");
}
}
// getters
public boolean isSeeded() {
return is_seeded;
}
public boolean isSetupDone() {
return setup_done;
}
public boolean isInitialized() {
return (setup_done && is_seeded);
}
public boolean needsSecureChannel() {
return needs_secure_channel;
}
public boolean needs2FA() {
return needs_2FA;
}
public byte getPin0RemainingCounter() {
return PIN0_remaining_tries;
}
public byte[] getCardVersion() {
byte[] versionBytes = new byte[4];
versionBytes[0] = protocol_major_version;
versionBytes[1] = protocol_minor_version;
versionBytes[2] = applet_major_version;
versionBytes[3] = applet_minor_version;
return versionBytes;
}
@Override
public String toString() {
return "setup_done: " + setup_done + "\n" +
"is_seeded: " + is_seeded + "\n" +
"needs_2FA: " + needs_2FA + "\n" +
"needs_secure_channel: " + needs_secure_channel + "\n" +
"protocol_major_version: " + protocol_major_version + "\n" +
"protocol_minor_version: " + protocol_minor_version + "\n" +
"applet_major_version: " + applet_major_version + "\n" +
"applet_minor_version: " + applet_minor_version;
}
}

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src/main/java/com/sparrowwallet/sparrow/io/satochip/SatoCardTransport.java Normal file
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package com.sparrowwallet.sparrow.io.satochip;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.smartcardio.*;
import javax.smartcardio.CardChannel;
import java.util.List;
import java.util.*;
public class SatoCardTransport {
private static final Logger log = LoggerFactory.getLogger(SatoCardTransport.class);
private final Card connection;
SatoCardTransport(byte[] appletAid) throws CardException {
TerminalFactory tf = TerminalFactory.getDefault();
List<CardTerminal> terminals = tf.terminals().list();
if(terminals.isEmpty()) {
throw new IllegalStateException("No reader connected");
}
Card connection = null;
for(Iterator<CardTerminal> iter = terminals.iterator(); iter.hasNext(); ) {
try {
connection = getConnection(iter.next(), appletAid);
break;
} catch(CardException e) {
if(!iter.hasNext()) {
log.info(e.getMessage());
throw e;
}
}
}
this.connection = connection;
}
private Card getConnection(CardTerminal cardTerminal, byte[] appletAid) throws CardException {
Card connection = cardTerminal.connect("*");
CardChannel cardChannel = connection.getBasicChannel();
ResponseAPDU resp = cardChannel.transmit(new CommandAPDU(0, 0xA4, 4, 0, appletAid));
if(resp.getSW() != APDUResponse.SW_OK) {
throw new CardException("Card initialization error, response was 0x" + Integer.toHexString(resp.getSW()));
}
return connection;
}
APDUResponse send(APDUCommand capdu) throws CardException {
javax.smartcardio.CardChannel cardChannel = this.connection.getBasicChannel();
CommandAPDU cmd = new CommandAPDU(capdu.getCla(), capdu.getIns(), capdu.getP1(), capdu.getP2(), capdu.getData());
ResponseAPDU resp = cardChannel.transmit(cmd);
return new APDUResponse(resp.getBytes());
}
void disconnect() throws CardException {
connection.disconnect(true);
}
}

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src/main/java/com/sparrowwallet/sparrow/io/satochip/Satochip.java Normal file
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package com.sparrowwallet.sparrow.io.satochip;
import com.sparrowwallet.drongo.crypto.ChildNumber;
import com.sparrowwallet.drongo.wallet.Keystore;
import com.sparrowwallet.drongo.wallet.WalletModel;
import com.sparrowwallet.sparrow.io.KeystoreCardImport;
import com.sparrowwallet.sparrow.io.ImportException;
import javafx.beans.property.StringProperty;
import javax.smartcardio.CardException;
import java.util.List;
public class Satochip implements KeystoreCardImport {
@Override
public boolean isInitialized() throws CardException {
SatoCardApi cardApi = null;
try {
cardApi = new SatoCardApi(WalletModel.SATOCHIP, null);
return cardApi.isInitialized();
} finally {
if(cardApi != null) {
cardApi.disconnect();
}
}
}
@Override
public void initialize(String pin, byte[] entropy, StringProperty messageProperty) throws CardException {
if(pin.length() < 4) {
throw new CardException("PIN too short.");
}
if(pin.length() > 16) {
throw new CardException("PIN too long.");
}
SatoCardApi cardApi = null;
try {
cardApi = new SatoCardApi(WalletModel.SATOCHIP, pin);
SatoCardStatus cardStatus = cardApi.getStatus();
if(cardStatus.isInitialized()) {
throw new IllegalStateException("Card is already initialized.");
}
cardApi.initialize(0, entropy);
} finally {
if(cardApi != null) {
cardApi.disconnect();
}
}
}
@Override
public Keystore getKeystore(String pin, List<ChildNumber> derivation, StringProperty messageProperty) throws ImportException {
if(pin.length() < 4) {
throw new ImportException("PIN too short.");
}
if(pin.length() > 16) {
throw new ImportException("PIN too long.");
}
SatoCardApi cardApi = null;
try {
cardApi = new SatoCardApi(WalletModel.SATOCHIP, pin);
SatoCardStatus cardStatus = cardApi.getStatus();
if(!cardStatus.isInitialized()) {
throw new IllegalStateException("Card is not initialized.");
}
cardApi.setDerivation(derivation);
return cardApi.getKeystore();
} catch(Exception e) {
throw new ImportException(e);
} finally {
if(cardApi != null) {
cardApi.disconnect();
}
}
}
@Override
public String getKeystoreImportDescription(int account) {
return "Import the keystore from your Satochip by inserting or placing it on the card reader.";
}
@Override
public String getName() {
return "Satochip";
}
@Override
public WalletModel getWalletModel() {
return WalletModel.SATOCHIP;
}
}

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package com.sparrowwallet.sparrow.io.satochip;
import com.sparrowwallet.drongo.ExtendedKey;
import com.sparrowwallet.drongo.Utils;
import com.sparrowwallet.drongo.protocol.Base58;
import com.sparrowwallet.sparrow.io.CardAuthorizationException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.nio.ByteBuffer;
import java.util.*;
import java.nio.charset.StandardCharsets;
import java.security.SecureRandom;
import static com.sparrowwallet.sparrow.io.satochip.Constants.*;
import javax.smartcardio.*;
/**
* This class is used to send APDU to the applet. Each method corresponds to an APDU as defined in the APPLICATION.md
* file. Some APDUs map to multiple methods for the sake of convenience since their payload or response require some
* pre/post processing.
*/
public class SatochipCommandSet {
private static final Logger log = LoggerFactory.getLogger(SatochipCommandSet.class);
private final SatoCardTransport cardTransport;
private final SecureChannelSession secureChannel;
private SatoCardStatus status;
private SatochipParser parser = null;
private String pinCached = null;
public static final byte[] SATOCHIP_AID = Utils.hexToBytes("5361746f43686970"); //SatoChip
/**
* Creates a SatochipCommandSet using the given APDU Channel
*/
public SatochipCommandSet() throws CardException {
this.cardTransport = new SatoCardTransport(SATOCHIP_AID);
this.secureChannel = new SecureChannelSession();
this.parser = new SatochipParser();
}
/**
* Returns the application info as stored from the last sent SELECT command. Returns null if no succesful SELECT
* command has been sent using this command set.
*
* @return the application info object
*/
public SatoCardStatus getApplicationStatus() {
if(this.status == null) {
this.cardGetStatus();
}
return this.status;
}
/****************************************
* AUTHENTIKEY *
****************************************/
public APDUResponse cardTransmit(APDUCommand plainApdu) {
// we try to transmit the APDU until we receive the answer or we receive an unrecoverable error
boolean isApduTransmitted = false;
do {
try {
byte[] apduBytes = plainApdu.serialize();
byte ins = apduBytes[1];
boolean isEncrypted = false;
// check if status available
if(status == null) {
APDUCommand statusCapdu = new APDUCommand(0xB0, INS_GET_STATUS, 0x00, 0x00, new byte[0]);
APDUResponse statusRapdu = this.cardTransport.send(statusCapdu);
status = new SatoCardStatus(statusRapdu);
}
APDUCommand capdu = plainApdu;
if(status.needsSecureChannel() && (ins != 0xA4) && (ins != 0x81) && (ins != 0x82) && (ins != INS_GET_STATUS)) {
if(!secureChannel.initializedSecureChannel()) {
// get card's public key
APDUResponse secChannelRapdu = this.cardInitiateSecureChannel();
byte[] pubkey = this.parser.parseInitiateSecureChannel(secChannelRapdu);
// setup secure channel
this.secureChannel.initiateSecureChannel(pubkey);
}
// encrypt apdu
capdu = secureChannel.encryptSecureChannel(plainApdu);
isEncrypted = true;
}
APDUResponse rapdu = this.cardTransport.send(capdu);
int sw12 = rapdu.getSw();
// check answer
if(sw12 == 0x9000) { // ok!
if(isEncrypted) {
// decrypt
rapdu = secureChannel.decryptSecureChannel(rapdu);
}
isApduTransmitted = true; // leave loop
return rapdu;
}
// PIN authentication is required
else if(sw12 == 0x9C06) {
//cardVerifyPIN();
log.error("Error, Satochip PIN required");
throw new CardAuthorizationException("PIN is required");
}
// SecureChannel is not initialized
else if(sw12 == 0x9C21) {
log.error("Error, Satochip secure channel required");
secureChannel.resetSecureChannel();
} else {
// cannot resolve issue at this point
isApduTransmitted = true; // leave loop
return rapdu;
}
} catch(Exception e) {
log.warn("Error transmitting Satochip command set" + e);
return new APDUResponse(new byte[0], (byte) 0x00, (byte) 0x00); // return empty APDUResponse
}
} while(!isApduTransmitted);
return new APDUResponse(new byte[0], (byte) 0x00, (byte) 0x00); // should not happen
}
public void cardDisconnect() {
secureChannel.resetSecureChannel();
status = null;
pinCached = null;
try {
cardTransport.disconnect();
} catch(CardException e) {
log.error("Error disconnecting Satochip" + e);
}
}
public void cardGetStatus() {
APDUCommand plainApdu = new APDUCommand(0xB0, INS_GET_STATUS, 0x00, 0x00, new byte[0]);
APDUResponse respApdu = this.cardTransmit(plainApdu);
this.status = new SatoCardStatus(respApdu);
}
public APDUResponse cardInitiateSecureChannel() throws CardException {
byte[] pubkey = secureChannel.getPublicKey();
APDUCommand plainApdu = new APDUCommand(0xB0, INS_INIT_SECURE_CHANNEL, 0x00, 0x00, pubkey);
return this.cardTransport.send(plainApdu);
}
/****************************************
* CARD MGMT *
****************************************/
public APDUResponse cardSetup(byte pin_tries0, byte[] pin0) {
// use random values for pin1, ublk0, ublk1
SecureRandom random = new SecureRandom();
byte[] ublk0 = new byte[8];
byte[] ublk1 = new byte[8];
byte[] pin1 = new byte[8];
random.nextBytes(ublk0);
random.nextBytes(ublk1);
random.nextBytes(pin1);
byte ublk_tries0 = (byte) 0x01;
byte ublk_tries1 = (byte) 0x01;
byte pin_tries1 = (byte) 0x01;
return cardSetup(pin_tries0, ublk_tries0, pin0, ublk0, pin_tries1, ublk_tries1, pin1, ublk1);
}
public APDUResponse cardSetup(byte pin_tries0, byte ublk_tries0, byte[] pin0, byte[] ublk0,
byte pin_tries1, byte ublk_tries1, byte[] pin1, byte[] ublk1) {
byte[] pin = {0x4D, 0x75, 0x73, 0x63, 0x6C, 0x65, 0x30, 0x30}; //default pin
byte cla = (byte) 0xB0;
byte ins = INS_SETUP;
byte p1 = 0;
byte p2 = 0;
// data=[pin_length(1) | pin |
// pin_tries0(1) | ublk_tries0(1) | pin0_length(1) | pin0 | ublk0_length(1) | ublk0 |
// pin_tries1(1) | ublk_tries1(1) | pin1_length(1) | pin1 | ublk1_length(1) | ublk1 |
// memsize(2) | memsize2(2) | ACL(3) |
// option_flags(2) | hmacsha160_key(20) | amount_limit(8)]
int optionsize = 0;
int option_flags = 0; // do not use option (mostly deprecated)
int offset = 0;
int datasize = 16 + pin.length + pin0.length + pin1.length + ublk0.length + ublk1.length + optionsize;
byte[] data = new byte[datasize];
data[offset++] = (byte) pin.length;
System.arraycopy(pin, 0, data, offset, pin.length);
offset += pin.length;
// pin0 & ublk0
data[offset++] = pin_tries0;
data[offset++] = ublk_tries0;
data[offset++] = (byte) pin0.length;
System.arraycopy(pin0, 0, data, offset, pin0.length);
offset += pin0.length;
data[offset++] = (byte) ublk0.length;
System.arraycopy(ublk0, 0, data, offset, ublk0.length);
offset += ublk0.length;
// pin1 & ublk1
data[offset++] = pin_tries1;
data[offset++] = ublk_tries1;
data[offset++] = (byte) pin1.length;
System.arraycopy(pin1, 0, data, offset, pin1.length);
offset += pin1.length;
data[offset++] = (byte) ublk1.length;
System.arraycopy(ublk1, 0, data, offset, ublk1.length);
offset += ublk1.length;
// memsize default (deprecated)
data[offset++] = (byte) 00;
data[offset++] = (byte) 32;
data[offset++] = (byte) 00;
data[offset++] = (byte) 32;
// ACL (deprecated)
data[offset++] = (byte) 0x01;
data[offset++] = (byte) 0x01;
data[offset++] = (byte) 0x01;
APDUCommand plainApdu = new APDUCommand(cla, ins, p1, p2, data);
APDUResponse respApdu = this.cardTransmit(plainApdu);
if(respApdu.getSw() == 0x9000) {
//setPin0(pin0); // todo: cache value...
} else {
log.error("Error " + respApdu.toHexString());
}
return respApdu;
}
/****************************************
* PIN MGMT *
****************************************/
public APDUResponse cardVerifyPIN() throws CardException {
return this.cardVerifyPIN((byte) 0, pinCached);
}
public APDUResponse cardVerifyPIN(int pinNbr, String pin) throws CardException {
if(pin == null) {
if(pinCached == null) {
throw new CardException("PIN required!");
}
pin = this.pinCached;
}
byte[] pinBytes = pin.getBytes(StandardCharsets.UTF_8);
if(pinBytes.length > 16) {
throw new CardException("PIN should be maximum 16 characters!");
}
APDUCommand capdu = new APDUCommand(0xB0, INS_VERIFY_PIN, (byte) pinNbr, 0x00, pinBytes);
APDUResponse rapdu = this.cardTransmit(capdu);
// correct PIN: cache PIN value
int sw = rapdu.getSw();
if(sw == 0x9000) {
this.pinCached = pin; //set cached PIN value
}
// wrong PIN, get remaining tries available (since v0.11)
else if((sw & 0xffc0) == 0x63c0) {
this.pinCached = null; //reset cached PIN value
int pinLeft = (sw & ~0xffc0);
throw new CardAuthorizationException("Wrong PIN, remaining tries: " + pinLeft);
}
// wrong PIN (legacy before v0.11)
else if(sw == 0x9c02) {
this.pinCached = null; //reset cached PIN value
SatoCardStatus cardStatus = this.getApplicationStatus();
int pinLeft = cardStatus.getPin0RemainingCounter();
throw new CardAuthorizationException("Wrong PIN, remaining tries: " + pinLeft);
}
// blocked PIN
else if(sw == 0x9c0c) {
throw new CardException("Card is blocked!");
}
return rapdu;
}
public void cardChangePIN(int pinNbr, String oldPin, String newPin) throws CardException {
byte[] oldPinBytes = oldPin.getBytes(StandardCharsets.UTF_8);
byte[] newPinBytes = newPin.getBytes(StandardCharsets.UTF_8);
int lc = 1 + oldPinBytes.length + 1 + newPinBytes.length;
byte[] data = new byte[lc];
data[0] = (byte) oldPinBytes.length;
int offset = 1;
System.arraycopy(oldPinBytes, 0, data, offset, oldPinBytes.length);
offset += oldPinBytes.length;
data[offset] = (byte) newPinBytes.length;
offset += 1;
System.arraycopy(newPinBytes, 0, data, offset, newPinBytes.length);
APDUCommand capdu = new APDUCommand(0xB0, INS_CHANGE_PIN, (byte) pinNbr, 0x00, data);
APDUResponse rapdu = this.cardTransmit(capdu);
// correct PIN: cache PIN value
int sw = rapdu.getSw();
if(sw == 0x9000) {
this.pinCached = newPin;
}
// wrong PIN, get remaining tries available (since v0.11)
else if((sw & 0xffc0) == 0x63c0) {
int pinLeft = (sw & ~0xffc0);
throw new CardAuthorizationException("Wrong PIN, remaining tries: " + pinLeft);
}
// wrong PIN (legacy before v0.11)
else if(sw == 0x9c02) {
SatoCardStatus cardStatus = this.getApplicationStatus();
int pinLeft = cardStatus.getPin0RemainingCounter();
throw new CardAuthorizationException("Wrong PIN, remaining tries: " + pinLeft);
}
// blocked PIN
else if(sw == 0x9c0c) {
throw new CardException("Card is blocked!");
}
}
/****************************************
* BIP32 *
****************************************/
public APDUResponse cardBip32ImportSeed(byte[] masterseed) {
APDUCommand plainApdu = new APDUCommand(0xB0, INS_BIP32_IMPORT_SEED, masterseed.length, 0x00, masterseed);
return this.cardTransmit(plainApdu);
}
public APDUResponse cardBip32GetExtendedKey(String stringPath) {
KeyPath keyPath = new KeyPath(stringPath);
byte[] bytePath = keyPath.getData();
return cardBip32GetExtendedKey(bytePath);
}
public APDUResponse cardBip32GetExtendedKey(byte[] bytePath) {
byte p1 = (byte) (bytePath.length / 4);
APDUCommand plainApdu = new APDUCommand(0xB0, INS_BIP32_GET_EXTENDED_KEY, p1, 0x40, bytePath);
return this.cardTransmit(plainApdu);
}
/*
* Get the BIP32 xpub for given path.
*
* Parameters:
* path (str): the path; if given as a string, it will be converted to bytes (4 bytes for each path index)
* xtype (str): the type of transaction such as 'standard', 'p2wpkh-p2sh', 'p2wpkh', 'p2wsh-p2sh', 'p2wsh'
* is_mainnet (bool): is mainnet or testnet
*
* Return:
* xpub (str): the corresponding xpub value
*/
public String cardBip32GetXpub(String stringPath, ExtendedKey.Header xtype) throws CardException {
// path is of the form 44'/0'/1'
KeyPath keyPath = new KeyPath(stringPath);
byte[] bytePath = keyPath.getData();
int depth = bytePath.length / 4;
APDUResponse rapdu = this.cardBip32GetExtendedKey(bytePath);
byte[][] extendedkey = this.parser.parseBip32GetExtendedKey(rapdu);
byte[] fingerprint = new byte[4];
byte[] childNumber = new byte[4];
if(depth == 0) { //masterkey
// fingerprint and childnumber set to all-zero bytes by default
//fingerprint= bytes([0,0,0,0])
//childNumber= bytes([0,0,0,0])
} else { //get parent info
byte[] bytePathParent = Arrays.copyOfRange(bytePath, 0, bytePath.length - 4);
APDUResponse rapdu2 = this.cardBip32GetExtendedKey(bytePathParent);
byte[][] extendedkeyParent = this.parser.parseBip32GetExtendedKey(rapdu2);
byte[] identifier = Utils.sha256hash160(extendedkeyParent[0]);
fingerprint = Arrays.copyOfRange(identifier, 0, 4);
childNumber = Arrays.copyOfRange(bytePath, bytePath.length - 4, bytePath.length);
}
ByteBuffer buffer = ByteBuffer.allocate(78);
buffer.putInt(xtype.getHeader());
buffer.put((byte) depth);
buffer.put(fingerprint);
buffer.put(childNumber);
buffer.put(extendedkey[1]); // chaincode
buffer.put(extendedkey[0]); // pubkey (compressed)
byte[] xpubByte = buffer.array();
return Base58.encodeChecked(xpubByte);
}
/****************************************
* SIGNATURES *
****************************************/
public APDUResponse cardSignTransactionHash(byte keynbr, byte[] txhash, byte[] chalresponse) throws CardException {
byte[] data;
if(txhash.length != 32) {
throw new CardException("Wrong txhash length (should be 32)");
}
if(chalresponse == null) {
data = new byte[32];
System.arraycopy(txhash, 0, data, 0, txhash.length);
} else if(chalresponse.length == 20) {
data = new byte[32 + 2 + 20];
int offset = 0;
System.arraycopy(txhash, 0, data, offset, txhash.length);
offset += 32;
data[offset++] = (byte) 0x80; // 2 middle bytes for 2FA flag
data[offset++] = (byte) 0x00;
System.arraycopy(chalresponse, 0, data, offset, chalresponse.length);
} else {
throw new CardException("Wrong challenge-response length (should be 20)");
}
APDUCommand plainApdu = new APDUCommand(0xB0, INS_SIGN_TRANSACTION_HASH, keynbr, 0x00, data);
return this.cardTransmit(plainApdu);
}
/**
* This function signs a given hash with a std or the last extended key
* If 2FA is enabled, a HMAC must be provided as an additional security layer. *
* ins: 0x7B
* p1: key number or 0xFF for the last derived Bip32 extended key
* p2: 0x00
* data: [hash(32b) | option: 2FA-flag(2b)|hmac(20b)]
* return: [sig]
*/
public APDUResponse cardSignSchnorrHash(byte keynbr, byte[] txhash, byte[] chalresponse) throws CardException {
byte[] data;
if(txhash.length != 32) {
throw new CardException("Wrong txhash length (should be 32)");
}
if(chalresponse == null) {
data = new byte[32];
System.arraycopy(txhash, 0, data, 0, txhash.length);
} else if(chalresponse.length == 20) {
data = new byte[32 + 2 + 20];
int offset = 0;
System.arraycopy(txhash, 0, data, offset, txhash.length);
offset += 32;
data[offset++] = (byte) 0x80; // 2 middle bytes for 2FA flag
data[offset++] = (byte) 0x00;
System.arraycopy(chalresponse, 0, data, offset, chalresponse.length);
} else {
throw new CardException("Wrong challenge-response length (should be 20)");
}
APDUCommand plainApdu = new APDUCommand(0xB0, 0x7B, keynbr, 0x00, data);
return this.cardTransmit(plainApdu);
}
/**
* This function tweak the currently available private stored in the Satochip.
* Tweaking is based on the 'taproot_tweak_seckey(seckey0, h)' algorithm specification defined here:
* https://github.com/bitcoin/bips/blob/master/bip-0341.mediawiki#constructing-and-spending-taproot-outputs
* <p>
* ins: 0x7C
* p1: key number or 0xFF for the last derived Bip32 extended key
* p2: 0x00
* data: [hash(32b) | option: 2FA-flag(2b)|hmac(20b)]
* return: [sig]
*/
public APDUResponse cardTaprootTweakPrivkey(byte keynbr, byte[] tweak) throws CardException {
byte[] data;
if(tweak == null) {
tweak = new byte[32]; // by default use a 32-byte vector filled with '0x00'
}
if(tweak.length != 32) {
throw new CardException("Wrong tweak length (should be 32)");
}
data = new byte[33];
data[0] = (byte) 32;
System.arraycopy(tweak, 0, data, 1, tweak.length);
APDUCommand plainApdu = new APDUCommand(0xB0, 0x7C, keynbr, 0x00, data);
return this.cardTransmit(plainApdu);
}
}

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package com.sparrowwallet.sparrow.io.satochip;
import com.sparrowwallet.drongo.protocol.Sha256Hash;
import com.sparrowwallet.drongo.crypto.ECKey;
import com.sparrowwallet.drongo.crypto.ECDSASignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.smartcardio.CardException;
import java.util.Arrays;
public class SatochipParser {
private static final Logger log = LoggerFactory.getLogger(SatochipParser.class);
public SatochipParser() {
}
/****************************************
* PARSER *
****************************************/
public byte[] parseInitiateSecureChannel(APDUResponse rapdu) throws CardException {
try {
byte[] data = rapdu.getData();
// data= [coordxSize | coordx | sig1Size | sig1 | sig2Size | sig2]
int offset = 0;
int coordxSize = 256 * data[offset++] + data[offset++];
byte[] coordx = new byte[coordxSize];
System.arraycopy(data, offset, coordx, 0, coordxSize);
offset += coordxSize;
// msg1 is [coordx_size | coordx]
byte[] msg1 = new byte[2 + coordxSize];
System.arraycopy(data, 0, msg1, 0, msg1.length);
int sig1Size = 256 * data[offset++] + data[offset++];
byte[] sig1 = new byte[sig1Size];
System.arraycopy(data, offset, sig1, 0, sig1Size);
offset += sig1Size;
// msg2 is [coordxSize | coordx | sig1Size | sig1]
byte[] msg2 = new byte[2 + coordxSize + 2 + sig1Size];
System.arraycopy(data, 0, msg2, 0, msg2.length);
int sig2Size = 256 * data[offset++] + data[offset++];
byte[] sig2 = new byte[sig2Size];
System.arraycopy(data, offset, sig2, 0, sig2Size);
offset += sig2Size;
return recoverPubkey(msg1, sig1, coordx, false);
} catch(Exception e) {
throw new CardException("Error parsing Satochip response", e);
}
}
public byte[][] parseBip32GetExtendedKey(APDUResponse rapdu) throws CardException {
try {
byte[][] extendedkey = new byte[2][];
extendedkey[0] = new byte[33]; // pubkey
extendedkey[1] = new byte[32]; // chaincode
byte[] data = rapdu.getData();
//data: [chaincode(32b) | coordx_size(2b) | coordx | sig_size(2b) | sig | sig_size(2b) | sig2]
int offset = 0;
byte[] chaincode = new byte[32];
System.arraycopy(data, offset, chaincode, 0, chaincode.length);
offset += 32;
int coordxSize = 256 * (data[offset++] & 0x7f) + data[offset++]; // (data[32] & 0x80) is ignored (optimization flag)
byte[] coordx = new byte[coordxSize];
System.arraycopy(data, offset, coordx, 0, coordxSize);
offset += coordxSize;
// msg1 is [chaincode | coordx_size | coordx]
byte[] msg1 = new byte[32 + 2 + coordxSize];
System.arraycopy(data, 0, msg1, 0, msg1.length);
int sig1Size = 256 * data[offset++] + data[offset++];
byte[] sig1 = new byte[sig1Size];
System.arraycopy(data, offset, sig1, 0, sig1Size);
offset += sig1Size;
// msg2 is [chaincode | coordxSize | coordx | sig1Size | sig1]
byte[] msg2 = new byte[32 + 2 + coordxSize + 2 + sig1Size];
System.arraycopy(data, 0, msg2, 0, msg2.length);
int sig2Size = 256 * data[offset++] + data[offset++];
byte[] sig2 = new byte[sig2Size];
System.arraycopy(data, offset, sig2, 0, sig2Size);
offset += sig2Size;
byte[] pubkey = recoverPubkey(msg1, sig1, coordx, true); // true: compressed (33 bytes)
// todo: recover from si2
System.arraycopy(pubkey, 0, extendedkey[0], 0, pubkey.length);
System.arraycopy(chaincode, 0, extendedkey[1], 0, chaincode.length);
return extendedkey;
} catch(Exception e) {
throw new CardException("Error parsing Satochip extended key", e);
}
}
/****************************************
* recovery methods *
****************************************/
public byte[] recoverPubkey(byte[] msg, byte[] dersig, byte[] coordx, Boolean compressed) throws CardException {
// convert msg to hash
//byte[] hash = Sha256Hash.hash(msg);
ECDSASignature ecdsaSig = ECDSASignature.decodeFromDER(dersig);
byte recId = -1;
ECKey k = null;
for(byte i = 0; i < 4; i++) {
k = ECKey.recoverFromSignature(i, ecdsaSig, Sha256Hash.of(msg), compressed);
if(k != null && Arrays.equals(k.getPubKeyXCoord(), coordx)) {
recId = i;
break;
}
}
if(recId == -1) {
throw new CardException("Could not construct a recoverable key. This should never happen.");
}
return k.getPubKey();
}
}

199
src/main/java/com/sparrowwallet/sparrow/io/satochip/SecureChannelSession.java Normal file
View file

@ -0,0 +1,199 @@
package com.sparrowwallet.sparrow.io.satochip;
import com.sparrowwallet.drongo.crypto.AESKeyCrypter;
import com.sparrowwallet.drongo.bip47.SecretPoint;
import com.sparrowwallet.drongo.crypto.ECKey;
import com.sparrowwallet.drongo.crypto.Key;
import com.sparrowwallet.drongo.crypto.EncryptedData;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import javax.smartcardio.CardException;
import java.security.SecureRandom;
import java.nio.ByteBuffer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Handles a SecureChannel session with the card.
*/
public class SecureChannelSession {
private static final Logger log = LoggerFactory.getLogger(SecureChannelSession.class);
public static final int SC_SECRET_LENGTH = 16;
public static final int SC_BLOCK_SIZE = 16;
public static final int IV_SIZE = 16;
public static final int MAC_SIZE = 20;
// secure channel constants
private final static byte INS_INIT_SECURE_CHANNEL = (byte) 0x81;
private final static byte INS_PROCESS_SECURE_CHANNEL = (byte) 0x82;
private final static short SW_SECURE_CHANNEL_REQUIRED = (short) 0x9C20;
private final static short SW_SECURE_CHANNEL_UNINITIALIZED = (short) 0x9C21;
private final static short SW_SECURE_CHANNEL_WRONG_IV = (short) 0x9C22;
private final static short SW_SECURE_CHANNEL_WRONG_MAC = (short) 0x9C23;
private boolean initialized_secure_channel = false;
// secure channel keys
private byte[] secret;
private byte[] iv;
private int ivCounter;
byte[] derived_key;
byte[] mac_key;
// for ECDH
private SecretPoint secretPoint;
private final ECKey eckey;
// for session encryption
private final SecureRandom random;
private final AESKeyCrypter aesCipher;
/**
* Constructs a SecureChannel session on the client.
*/
public SecureChannelSession() {
random = new SecureRandom();
// generate keypair
eckey = new ECKey();
aesCipher = new AESKeyCrypter();
}
/**
* Generates a pairing secret. This should be called before each session. The public key of the card is used as input
* for the EC-DH algorithm. The output is stored as the secret.
*
* @param pubkeyData the public key returned by the applet as response to the SELECT command
*/
public void initiateSecureChannel(byte[] pubkeyData) { //TODO: check keyData format
try {
byte[] privkeyData = this.eckey.getPrivKeyBytes();
secretPoint = new SecretPoint(privkeyData, pubkeyData);
secret = secretPoint.ECDHSecretAsBytes();
//log.trace("SATOCHIP SecureChannelSession initiateSecureChannel() secret: " + Utils.bytesToHex(secret));
// derive session encryption key
byte[] msg_key = "sc_key".getBytes();
byte[] derived_key_2Ob = getHmacSha1Hash(secret, msg_key);
derived_key = new byte[16];
System.arraycopy(derived_key_2Ob, 0, derived_key, 0, 16);
//log.trace("SATOCHIP SecureChannelSession initiateSecureChannel() derived_key: " + Utils.bytesToHex(derived_key));
// derive session mac key
byte[] msg_mac = "sc_mac".getBytes();
mac_key = getHmacSha1Hash(secret, msg_mac);
//log.trace("SATOCHIP SecureChannelSession initiateSecureChannel() mac_key: " + Utils.bytesToHex(mac_key));
ivCounter = 1;
initialized_secure_channel = true;
} catch(Exception e) {
log.error("Error initiating secure channel", e);
}
}
public APDUCommand encryptSecureChannel(APDUCommand plainApdu) throws CardException {
try {
byte[] plainBytes = plainApdu.serialize();
// set iv
iv = new byte[SC_BLOCK_SIZE];
random.nextBytes(iv);
ByteBuffer bb = ByteBuffer.allocate(4);
bb.putInt(ivCounter); // big endian
byte[] ivCounterBytes = bb.array();
System.arraycopy(ivCounterBytes, 0, iv, 12, 4);
ivCounter += 2;
// encrypt data
Key aesKey = new Key(derived_key, null, null);
byte[] encrypted = aesCipher.encrypt(plainBytes, iv, aesKey).getEncryptedBytes();
// mac
int offset = 0;
byte[] data_to_mac = new byte[IV_SIZE + 2 + encrypted.length];
System.arraycopy(iv, offset, data_to_mac, offset, IV_SIZE);
offset += IV_SIZE;
data_to_mac[offset++] = (byte) (encrypted.length >> 8);
data_to_mac[offset++] = (byte) (encrypted.length % 256);
System.arraycopy(encrypted, 0, data_to_mac, offset, encrypted.length);
// log.trace("SATOCHIP data_to_mac: "+ SatochipParser.toHexString(data_to_mac));
byte[] mac = getHmacSha1Hash(mac_key, data_to_mac);
// copy all data to new data buffer
offset = 0;
byte[] data = new byte[IV_SIZE + 2 + encrypted.length + 2 + MAC_SIZE];
System.arraycopy(iv, offset, data, offset, IV_SIZE);
offset += IV_SIZE;
data[offset++] = (byte) (encrypted.length >> 8);
data[offset++] = (byte) (encrypted.length % 256);
System.arraycopy(encrypted, 0, data, offset, encrypted.length);
offset += encrypted.length;
data[offset++] = (byte) (mac.length >> 8);
data[offset++] = (byte) (mac.length % 256);
System.arraycopy(mac, 0, data, offset, mac.length);
// convert to C-APDU
return new APDUCommand(0xB0, INS_PROCESS_SECURE_CHANNEL, 0x00, 0x00, data);
} catch(Exception e) {
throw new CardException("Error encrypting secure channel", e);
}
}
public APDUResponse decryptSecureChannel(APDUResponse encryptedApdu) throws CardException {
try {
byte[] encryptedBytes = encryptedApdu.getData();
if(encryptedBytes.length == 0) {
return encryptedApdu; // no decryption needed
} else if(encryptedBytes.length < 40) {
// has at least (IV_SIZE + 2 + 2 + 20)
throw new RuntimeException("Encrypted response has wrong length: " + encryptedBytes.length);
}
int offset = 0;
byte[] iv = new byte[IV_SIZE];
System.arraycopy(encryptedBytes, offset, iv, 0, IV_SIZE);
offset += IV_SIZE;
int ciphertext_size = ((encryptedBytes[offset++] & 0xff) << 8) + (encryptedBytes[offset++] & 0xff);
if((encryptedBytes.length - offset) != ciphertext_size) {
throw new RuntimeException("Encrypted response has wrong length ciphertext_size: " + ciphertext_size);
}
byte[] ciphertext = new byte[ciphertext_size];
System.arraycopy(encryptedBytes, offset, ciphertext, 0, ciphertext.length);
// decrypt data
Key aesKey = new Key(derived_key, null, null);
EncryptedData encryptedData = new EncryptedData(iv, ciphertext, null, null);
byte[] decrypted = aesCipher.decrypt(encryptedData, aesKey);
return new APDUResponse(decrypted, (byte) 0x90, (byte) 0x00);
} catch(Exception e) {
throw new CardException("Error decrypting secure channel", e);
}
}
public boolean initializedSecureChannel() {
return initialized_secure_channel;
}
public byte[] getPublicKey() {
return eckey.getPubKey(false);
}
public void resetSecureChannel() {
initialized_secure_channel = false;
}
public static byte[] getHmacSha1Hash(byte[] key, byte[] data) {
try {
SecretKeySpec secretKeySpec = new SecretKeySpec(key, "HmacSHA1");
Mac mac = Mac.getInstance("HmacSHA1");
mac.init(secretKeySpec);
return mac.doFinal(data);
} catch(Exception e) {
throw new RuntimeException("Error computing HmacSHA1", e);
}
}
}

3
src/main/java/com/sparrowwallet/sparrow/keystoreimport/HwAirgappedController.java
View file

@ -6,6 +6,7 @@ import com.sparrowwallet.sparrow.control.FileKeystoreImportPane;
import com.sparrowwallet.sparrow.control.TitledDescriptionPane;
import com.sparrowwallet.sparrow.io.*;
import com.sparrowwallet.sparrow.io.ckcard.Tapsigner;
import com.sparrowwallet.sparrow.io.satochip.Satochip;
import javafx.fxml.FXML;
import javafx.scene.control.Accordion;
import org.slf4j.Logger;
@ -38,7 +39,7 @@ public class HwAirgappedController extends KeystoreImportDetailController {
}
}
List<KeystoreCardImport> cardImporters = List.of(new Tapsigner());
List<KeystoreCardImport> cardImporters = List.of(new Tapsigner(), new Satochip());
for(KeystoreCardImport importer : cardImporters) {
if(!importer.isDeprecated() || Config.get().isShowDeprecatedImportExport()) {
CardImportPane importPane = new CardImportPane(getMasterController().getWallet(), importer, getMasterController().getRequiredDerivation());

6
src/main/java/com/sparrowwallet/sparrow/wallet/KeystoreController.java
View file

@ -75,6 +75,9 @@ public class KeystoreController extends WalletFormController implements Initiali
@FXML
private SegmentedButton cardServiceButtons;
@FXML
private ToggleButton backupButton;
@FXML
private Button importButton;
@ -300,6 +303,7 @@ public class KeystoreController extends WalletFormController implements Initiali
viewSeedButton.setVisible(keystore.getSource() == KeystoreSource.SW_SEED && keystore.hasSeed());
viewKeyButton.setVisible(keystore.getSource() == KeystoreSource.SW_SEED && keystore.hasMasterPrivateExtendedKey());
cardServiceButtons.setVisible(keystore.getWalletModel().isCard());
backupButton.setDisable(!keystore.getWalletModel().supportsBackup());
importButton.setText(keystore.getSource() == KeystoreSource.SW_WATCH ? "Import..." : "Replace...");
importButton.setTooltip(new Tooltip(keystore.getSource() == KeystoreSource.SW_WATCH ? "Import a keystore from an external source" : "Replace this keystore with another source"));
@ -465,7 +469,7 @@ public class KeystoreController extends WalletFormController implements Initiali
return;
}
CardPinDialog cardPinDialog = new CardPinDialog(backupOnly);
CardPinDialog cardPinDialog = new CardPinDialog(keystore.getWalletModel(), backupOnly);
cardPinDialog.initOwner(cardServiceButtons.getScene().getWindow());
Optional<CardPinDialog.CardPinChange> optPinChange = cardPinDialog.showAndWait();
if(optPinChange.isPresent()) {

2
src/main/resources/com/sparrowwallet/sparrow/wallet/keystore.fxml
View file

@ -54,7 +54,7 @@
<Tooltip text="Change the PIN of the current card"/>
</tooltip>
</ToggleButton>
<ToggleButton toggleGroup="$cardServiceToggleGroup" text="Backup" onAction="#backupCard">
<ToggleButton fx:id="backupButton" toggleGroup="$cardServiceToggleGroup" text="Backup" onAction="#backupCard">
<tooltip>
<Tooltip text="Backup the current card"/>
</tooltip>

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