Android 9 - KeyStore exception android.os.ServiceSpecificException

Question

If I run this code on Android 9, I receive the follow exception:

private static KeyStore.PrivateKeyEntry getPrivateKeyEntry(String alias) {
        try {
            


        

Answer 1

Finally I found a solution. It looks like since Android P (KeyStore.PrivateKeyEntry) keyStore.getEntry("alias", null) is not a proper way to get private key.

I was able to get rid of this warning by accessing private/public key this way

KeyStore keyStore = KeyStore.getInstance("AndroidKeyStore");
keyStore.load(null);

PrivateKey privateKey = (PrivateKey) keyStore.getKey("alias", null);
PublicKey publicKey = keyStore.getCertificate("alias").getPublicKey();