how to Access Android Keystore from Different User on Multi-User Devices - Need guide
Could someone explain I'm trying to debug Hey everyone, I'm running into an issue that's driving me crazy... I'm currently working with an scenario where I need to access the Android Keystore from an app when it's run under a different user profile on a multi-user device (Android 14). The app works perfectly when accessed from the primary user but when I switch to a secondary user, I get the following behavior: `java.security.KeyStoreException: Failed to load KeyStore: android.security.keystore.KeyStoreException: Key store operation failed`. My implementation involves using the Keystore to store symmetric keys for encrypting user data. Here's a snippet of the code I use to generate and retrieve the key: ```java KeyGenParameterSpec keyGenParameterSpec = new KeyGenParameterSpec.Builder( KEY_ALIAS, KeyProperties.PURPOSE_ENCRYPT | KeyProperties.PURPOSE_DECRYPT) .setBlockModes(KeyProperties.BLOCK_MODE_GCM) .setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_NONE) .setUserAuthenticationRequired(true) .build(); KeyGenerator keyGenerator = KeyGenerator.getInstance(KeyProperties.KEY_ALGORITHM_AES, "AndroidKeyStore"); keyGenerator.init(keyGenParameterSpec); SecretKey secretKey = keyGenerator.generateKey(); ``` When I try to run the same operations on the secondary user, the key retrieval fails with the behavior mentioned above. I've also tried explicitly setting the user authentication requirements to `false`, but that did not resolve the scenario. I've read that the Android Keystore is user-specific, but I'm not sure how to handle the keys across different users properly. Has anyone encountered this scenario or have any insights on how to manage the Keystore with multi-user profiles effectively? My development environment is Ubuntu. I'm using Java 3.9 in this project. Is there a better approach? Cheers for any assistance!