package edu.jiangxin.apktoolbox.utils;
   
   import java.io.FileInputStream;
   import java.io.IOException;
   import java.security.Key;
   import java.security.KeyStore;
   import java.security.KeyStoreException;
   import java.security.NoSuchAlgorithmException;
   import java.security.UnrecoverableKeyException;
  import java.security.cert.CertificateException;
  
  
  /**
   * @author jiangxin
   * @author 2018-09-02
   *
   */
  public class KeyVerify {
      
      public static String verify(String keyStorePath, char[] password, String alias, char[] aliasPassword) {
          KeyStore keyStore = null;
          FileInputStream fis = null;
          Key key = null;
          String message;
          try {
              keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
              fis = new FileInputStream(keyStorePath);
              keyStore.load(fis, password);
              key = keyStore.getKey(alias, aliasPassword);
              if (key == null) {
                  message = "alias does not exist";
              }
              message = "OK";
          } catch (NoSuchAlgorithmException | CertificateException | IOException | KeyStoreException
                  | UnrecoverableKeyException e) {
              message = e.getMessage();
          } finally {
              if (fis != null) {
                  try {
                      fis.close();
                  } catch (IOException e) {
                      message = "closing fis fails";
                  }
              }
          }
          return message;
      }
  }