안드로이드 릴리즈 키해시 얻기

1. First open a terminal (open a command prompt in windows).
2. Navigate in the terminal to the directory where your Android debug.keystore is stored.
3. Mostly it will located under “/Users/user_name/.android/” (In Windows will be C:\Documents and Settings\.android).

4. Once you are in the “.android” directory, run the following command.

   keytool -exportcert -alias androiddebugkey -keystore debug.keystore | openssl sha1 -binary | openssl base64

5. When it prompts you for a password, type android and hit Enter

6. Copy the value printed in the terminal that ends with an “=” and paste it in the Key Hash field in Facebook. Then click the Save Changes button.

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://stackoverflow.com/questions/6661993/how-to-generate-key-hash-for-facebook-sdk-in-mac