Merge "Fixing array cast."

import java.security.KeyPairGenerator;

import java.security.KeyStore;

import java.security.SecureRandom;

import java.security.cert.Certificate;

import java.security.cert.CertificateFactory;

import java.security.cert.X509Certificate;

import java.security.spec.ECGenParameterSpec;

import java.util.Arrays;

import java.util.Collection;

import java.util.Random;

import java.util.Set;

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

            keyStore.load(null);

            Certificate[] certs = keyStore.getCertificateChain(keystoreAlias);

            X509Certificate[] certificateChain =

                    (X509Certificate[]) keyStore.getCertificateChain(keystoreAlias);

                Arrays.copyOf(certs, certs.length, X509Certificate[].class);

            keyStore.deleteEntry(keystoreAlias);