EncryptedSharedPreferences initialization failed

[AhmadFikriAS]

I got this issue in version 9.2.4 and still same in version 10.0.0-beta.4

Android ver : 10
Device : imin POS

E/SecureStorageAndroid( 8098): EncryptedSharedPreferences initialization failed
E/SecureStorageAndroid( 8098): java.security.GeneralSecurityException: Keystore operation failed
E/SecureStorageAndroid( 8098): at com.it_nomads.fluttersecurestorage.crypto.MasterKeys.generateKey(MasterKeys.java:102)
E/SecureStorageAndroid( 8098): at com.it_nomads.fluttersecurestorage.crypto.MasterKeys.getOrCreate(MasterKeys.java:56)
E/SecureStorageAndroid( 8098): at com.it_nomads.fluttersecurestorage.crypto.MasterKey$Builder$Api23Impl.build(MasterKey.java:317)
E/SecureStorageAndroid( 8098): at com.it_nomads.fluttersecurestorage.crypto.MasterKey$Builder.build(MasterKey.java:268)
E/SecureStorageAndroid( 8098): at com.it_nomads.fluttersecurestorage.FlutterSecureStorage.initializeEncryptedSharedPreferencesManager(FlutterSecureStorage.java:128)
E/SecureStorageAndroid( 8098): at com.it_nomads.fluttersecurestorage.FlutterSecureStorage.getEncryptedSharedPreferences(FlutterSecureStorage.java:108)
E/SecureStorageAndroid( 8098): at com.it_nomads.fluttersecurestorage.FlutterSecureStorage.write(FlutterSecureStorage.java:54)
E/SecureStorageAndroid( 8098): at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin$MethodRunner.handleWrite(FlutterSecureStoragePlugin.java:118)
E/SecureStorageAndroid( 8098): at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin$MethodRunner.handleMethodCall(FlutterSecureStoragePlugin.java:92)
E/SecureStorageAndroid( 8098): at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin$MethodRunner.run(FlutterSecureStoragePlugin.java:80)
E/SecureStorageAndroid( 8098): at android.os.Handler.handleCallback(Handler.java:938)
E/SecureStorageAndroid( 8098): at android.os.Handler.dispatchMessage(Handler.java:99)
E/SecureStorageAndroid( 8098): at android.os.Looper.loop(Looper.java:223)
E/SecureStorageAndroid( 8098): at android.os.HandlerThread.run(HandlerThread.java:67)
E/SecureStorageAndroid( 8098): Caused by: java.security.ProviderException: Keystore operation failed
E/SecureStorageAndroid( 8098): at android.security.keystore.AndroidKeyStoreKeyGeneratorSpi.engineGenerateKey(AndroidKeyStoreKeyGeneratorSpi.java:331)
E/SecureStorageAndroid( 8098): at javax.crypto.KeyGenerator.generateKey(KeyGenerator.java:612)
E/SecureStorageAndroid( 8098): at com.it_nomads.fluttersecurestorage.crypto.MasterKeys.generateKey(MasterKeys.java:98)
E/SecureStorageAndroid( 8098): ... 13 more
E/SecureStorageAndroid( 8098): Caused by: android.security.KeyStoreException: Unknown error
E/SecureStorageAndroid( 8098): at android.security.KeyStore.getKeyStoreException(KeyStore.java:1301)
E/SecureStorageAndroid( 8098): ... 16 more

[mavzerbay]

yeah same here

Flutter info :
Flutter 3.27.3 • channel stable • https://github.com/flutter/flutter.git
Framework • revision c519ee916e (6 weeks ago) • 2025-01-21 10:32:23 -0800
Engine • revision e672b006cb
Tools • Dart 3.6.1 • DevTools 2.40.2

I started getting this error all of a sudden, also applies to 9.2.2 and above

E/KeyStore(19136): generateKeyInternal failed on response -41
E/SecureStorageAndroid(19136): EncryptedSharedPreferences initialization failed
E/SecureStorageAndroid(19136): java.security.GeneralSecurityException: Keystore operation failed
E/SecureStorageAndroid(19136): 	at com.it_nomads.fluttersecurestorage.crypto.MasterKeys.generateKey(MasterKeys.java:102)
E/SecureStorageAndroid(19136): 	at com.it_nomads.fluttersecurestorage.crypto.MasterKeys.getOrCreate(MasterKeys.java:56)
E/SecureStorageAndroid(19136): 	at com.it_nomads.fluttersecurestorage.crypto.MasterKey$Builder$Api23Impl.build(MasterKey.java:317)
E/SecureStorageAndroid(19136): 	at com.it_nomads.fluttersecurestorage.crypto.MasterKey$Builder.build(MasterKey.java:268)
E/SecureStorageAndroid(19136): 	at com.it_nomads.fluttersecurestorage.FlutterSecureStorage.initializeEncryptedSharedPreferencesManager(FlutterSecureStorage.java:128)
E/SecureStorageAndroid(19136): 	at com.it_nomads.fluttersecurestorage.FlutterSecureStorage.getEncryptedSharedPreferences(FlutterSecureStorage.java:108)
E/SecureStorageAndroid(19136): 	at com.it_nomads.fluttersecurestorage.FlutterSecureStorage.containsKey(FlutterSecureStorage.java:44)
E/SecureStorageAndroid(19136): 	at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin$MethodRunner.handleRead(FlutterSecureStoragePlugin.java:127)
E/SecureStorageAndroid(19136): 	at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin$MethodRunner.handleMethodCall(FlutterSecureStoragePlugin.java:95)
E/SecureStorageAndroid(19136): 	at com.it_nomads.fluttersecurestorage.FlutterSecureStoragePlugin$MethodRunner.run(FlutterSecureStoragePlugin.java:80)
E/SecureStorageAndroid(19136): 	at android.os.Handler.handleCallback(Handler.java:938)
E/SecureStorageAndroid(19136): 	at android.os.Handler.dispatchMessage(Handler.java:99)
E/SecureStorageAndroid(19136): 	at android.os.Looper.loop(Looper.java:223)
E/SecureStorageAndroid(19136): 	at android.os.HandlerThread.run(HandlerThread.java:67)
E/SecureStorageAndroid(19136): Caused by: java.security.ProviderException: Keystore operation failed
E/SecureStorageAndroid(19136): 	at android.security.keystore.AndroidKeyStoreKeyGeneratorSpi.engineGenerateKey(AndroidKeyStoreKeyGeneratorSpi.java:331)
E/SecureStorageAndroid(19136): 	at javax.crypto.KeyGenerator.generateKey(KeyGenerator.java:612)
E/SecureStorageAndroid(19136): 	at com.it_nomads.fluttersecurestorage.crypto.MasterKeys.generateKey(MasterKeys.java:98)
E/SecureStorageAndroid(19136): 	... 13 more
E/SecureStorageAndroid(19136): Caused by: android.security.KeyStoreException: Memory allocation failed
E/SecureStorageAndroid(19136): 	at android.security.KeyStore.getKeyStoreException(KeyStore.java:1301)
E/SecureStorageAndroid(19136): 	... 16 more

[github-actions]

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If this issue is still relevant, please comment to keep it active. Otherwise, it will be closed in 60 days.

[sandrosimas]

What to do in this case?

[ViscousPot]

I've also been seeing this and have a guess that adding some resetOnError logic to this function might help resolve this (I'm thinking a try catch and delete the pref if it errors)

flutter_secure_storage/flutter_secure_storage/android/src/main/java/com/it_nomads/fluttersecurestorage/FlutterSecureStorage.java

Line 132 in 71b75a3

private SharedPreferences initializeEncryptedSharedPreferencesManager(Context context, String sharedPreferencesName) throws GeneralSecurityException, IOException {

I'm currently only able to reproduce this in a release signed (not with debug keys) version of the app deployed through PlayStore internal testing. This isn't ideal since I don't want to burn a bunch of version numbers testing the changes.

Would appreciate if anyone has a simpler repro path for me to follow! 🚀

[ViscousPot]

So I actually ended up burning a version number to test this and it works exactly as expected! Hope this resolves the issue for others too :)

#946

Make sure to use resetOnError: true for my fix to work