NIAP: Try to compute data if use keystore function fail am: 5d1188ed80 (a57372ac) · Commits · e / os / android_packages_apps_Bluetooth

src/com/android/bluetooth/btservice/bluetoothKeystore/BluetoothKeystoreService.java

+46 −14

Original line number	Diff line number	Diff line
		@@ -77,6 +77,7 @@ public class BluetoothKeystoreService {
		private static final int KEY_LENGTH = 256;
		private static final String KEYALIAS = "bluetooth-key-encrypted";
		private static final String KEY_STORE = "AndroidKeyStore";
		private static final int TRY_MAX = 3;

		private static final String CONFIG_FILE_PREFIX = "bt_config-origin";
		private static final String CONFIG_BACKUP_PREFIX = "bt_config-backup";
		@@ -137,13 +138,11 @@ public class BluetoothKeystoreService {
		return;
		}

		try {
		keyStore = AndroidKeyStoreProvider.getKeyStoreForUid(Process.BLUETOOTH_UID);
		} catch (NoSuchProviderException e) {
		reportKeystoreException(e, "cannot find crypto provider");
		return;
		} catch (KeyStoreException e) {
		reportKeystoreException(e, "cannot find the keystore");
		keyStore = getKeyStore();

		// Confirm whether to enable NIAP for the first time.
		if (keyStore == null) {
		debugLog("cannot find the keystore.");
		return;
		}

		@@ -547,7 +546,7 @@ public class BluetoothKeystoreService {
		return false;
		}
		String encryptedData = mNameEncryptKey.get(prefixString);
		String decryptedData = decrypt(encryptedData);
		String decryptedData = tryCompute(encryptedData, false);
		if (decryptedData == null) {
		errorLog("compareFileHash: decrypt encrypted hash data fail, prefix: " + prefixString);
		return false;
		@@ -663,6 +662,26 @@ public class BluetoothKeystoreService {
		}
		}

		// will retry TRY_MAX times.
		private String tryCompute(String sourceData, boolean doEncrypt) {
		int counter = 0;
		String targetData = null;

		if (sourceData == null) {
		return null;
		}

		while (targetData == null && counter < TRY_MAX) {
		if (doEncrypt) {
		targetData = encrypt(sourceData);
		} else {
		targetData = decrypt(sourceData);
		}
		counter++;
		}
		return targetData;
		}

		/**
		* Encrypt the provided data blob.
		*
		@@ -761,10 +780,27 @@ public class BluetoothKeystoreService {
		return output;
		}

		private KeyStore getKeyStore() {
		KeyStore keyStore = null;
		int counter = 0;

		while ((counter <= TRY_MAX) && (keyStore == null)) {
		try {
		keyStore = AndroidKeyStoreProvider.getKeyStoreForUid(Process.BLUETOOTH_UID);
		} catch (NoSuchProviderException e) {
		reportKeystoreException(e, "cannot find crypto provider");
		} catch (KeyStoreException e) {
		reportKeystoreException(e, "cannot find the keystore");
		}
		counter++;
		}
		return keyStore;
		}

		private SecretKey getOrCreateSecretKey() {
		SecretKey secretKey = null;
		try {
		KeyStore keyStore = AndroidKeyStoreProvider.getKeyStoreForUid(Process.BLUETOOTH_UID);
		KeyStore keyStore = getKeyStore();
		if (keyStore.containsAlias(KEYALIAS)) { // The key exists in key store. Get the key.
		KeyStore.SecretKeyEntry secretKeyEntry = (KeyStore.SecretKeyEntry) keyStore
		.getEntry(KEYALIAS, null);
		@@ -867,11 +903,7 @@ public class BluetoothKeystoreService {
		prefixString = mSourceQueue.take();
		if (mSourceDataMap.containsKey(prefixString)) {
		sourceData = mSourceDataMap.get(prefixString);
		if (mDoEncrypt) {
		targetData = encrypt(sourceData);
		} else {
		targetData = decrypt(sourceData);
		}
		targetData = tryCompute(sourceData, mDoEncrypt);
		if (targetData != null) {
		mTargetDataMap.put(prefixString, targetData);
		} else {