[Android] 해시 키 메소드

private void getAppKeyHash() {
    try {
        PackageInfo info = getPackageManager().getPackageInfo(getPackageName(), PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md;
            md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            String something = new String(Base64.encode(md.digest(), 0));
            Log.d("Hash key", something);
        }
    } catch (Exception e) {
        // TODO Auto-generated catch block
        Log.e("name not found", e.toString());
    }
}

출처 : http://www.bboks.net/371