code: private static String convertToStandardName(String internalName) {
          if (internalName.equals("SHA")) {
              return "SHA-1";
          } else if (internalName.equals("SHA224")) {
              return "SHA-224";
          } else if (internalName.equals("SHA256")) {
              return "SHA-256";
          } else if (internalName.equals("SHA384")) {
              return "SHA-384";
          } else if (internalName.equals("SHA512")) {
              return "SHA-512";
          } else {
              return internalName;
          }
      }
docs: Copied from com.sun.crypto.provider.OAEPParameters.