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kotlin - How to create masterKey after MasterKeys deprecated in Android

I am using the following code to store some information encrypted in my app.

    val masterKey = MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC)

    val sharedPreferences = EncryptedSharedPreferences.create(
        "secret_shared_prefs",
        masterKey,
        this,
        EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
        EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
    )

Since the MasterKeys class deprecated in Android, I should use the MasterKey class and but I cannot figure out what is the right method to get the same mastery defined.

Could somebody show the exact match with the available MasterKey and MasterKey.Builder classes?

The below solution worked like this:

val spec = KeyGenParameterSpec.Builder(
        "_androidx_security_master_key_",
        KeyProperties.PURPOSE_ENCRYPT or KeyProperties.PURPOSE_DECRYPT
    )
        .setBlockModes(KeyProperties.BLOCK_MODE_GCM)
        .setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_NONE)
        .setKeySize(256)
        .build()

    val masterKey: MasterKey = MasterKey.Builder(this)
        .setKeyGenParameterSpec(spec)
        .build()

    val sharedPreferences = EncryptedSharedPreferences.create(
        this,
        "secret_shared_prefs",
        masterKey, // masterKey created above
        EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
        EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM);
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by (71.8m points)

try this one


MasterKey masterKey = new MasterKey.Builder(context, MasterKey.DEFAULT_MASTER_KEY_ALIAS)
        .setKeyScheme(MasterKey.KeyScheme.AES256_GCM)
        .build();

SharedPreferences sharedPreferences = EncryptedSharedPreferences.create(
        context,
        SHARED_PREF_NAME,
        masterKey,
        EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
        EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM);

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