키해시 뽑기

keytool 사용으로 뽑을수있긴한데 이걸로 뽑았을때 openssl버전에 따라서 인증이 되지 않는경우가 있었다.

    @SuppressLint("PackageManagerGetSignatures")
    private void getHashKey(){
        PackageInfo packageInfo = null;
        try {
            packageInfo = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNATURES);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        if (packageInfo == null)
            Log.e("KeyHash", "KeyHash:null");

        for (Signature signature : packageInfo.signatures) {
            try {
                MessageDigest md = MessageDigest.getInstance("SHA");
                md.update(signature.toByteArray());
                Log.d("KeyHash", Base64.encodeToString(md.digest(), Base64.DEFAULT));
            } catch (NoSuchAlgorithmException e) {
                Log.e("KeyHash", "Unable to get MessageDigest. signature=" + signature, e);
            }
        }
    }