Don't crash if a null key is passed for verification/parsing

        if (packageName == null || packageName.length() == 0) {

            Slog.i(TAG, "verifier package name was null; skipping");

            return null;

        } else if (encodedPublicKey == null) {

            Slog.i(TAG, "verifier " + packageName + " public key was null; skipping");

        }

        PublicKey publicKey = parsePublicKey(encodedPublicKey);

        if (publicKey != null) {

        final PublicKey publicKey = parsePublicKey(encodedPublicKey);

        if (publicKey == null) {

            Slog.i(TAG, "Unable to parse verifier public key for " + packageName);

            return null;

        }

        return new VerifierInfo(packageName, publicKey);

    }

    public static final PublicKey parsePublicKey(final String encodedPublicKey) {

        if (encodedPublicKey == null) {

            Slog.i(TAG, "Could not parse null public key");

            return null;

        }

    public static final PublicKey parsePublicKey(String encodedPublicKey) {

        EncodedKeySpec keySpec;

        try {

            final byte[] encoded = Base64.decode(encodedPublicKey, Base64.DEFAULT);