JKS密码验证

下面的程序用来验证JKS的文件及密码是否正确

public static URL getStoreURL(String storePath) throws IOException
{
	URL url = null;
	// First see if this is a URL
	try
	{
		url = new URL(storePath);
	}
	catch (MalformedURLException e)
	{
		// Not a URL or a protocol without a handler so...
		// next try to locate this as file path
		File tst = new File(storePath);
		if (tst.exists() == true)
		{
			url = tst.toURL();
		} else
		{
			// not a file either, lastly try to locate this as a classpath
			// resource
			if (url == null)
			{
				ClassLoader loader = Thread.currentThread().getContextClassLoader();
				url = loader.getResource(storePath);
			}
		}
	}
	// Fail if no valid key store was located
	if (url == null)
	{
		String msg = "Failed to find url=" + storePath + " as a URL, file or resource";
		throw new MalformedURLException(msg);
	}
	return url;
}

public static KeyStore loadKeyStore(String storeType, URL storePathURL, String storePassword) throws Exception
{
	KeyStore keyStore = null;
	String provider = null;
	String providerName = null;

	if (provider != null)
	{
		keyStore = KeyStore.getInstance(storeType, provider);
	} else
		if (providerName != null)
		{
			keyStore = KeyStore.getInstance(storeType, providerName);
		} else
		{
			keyStore = KeyStore.getInstance(storeType);
		}
	if (storePathURL == null) { throw new Exception("Can not find store file for url because store url is null."); }
	// now that keystore instance created, need to load data from file
	InputStream keyStoreInputStream = null;
	try
	{
		keyStoreInputStream = storePathURL.openStream();
		// is ok for password to be null, as will just be used to check
		// integrity of store
		char[] password = storePassword != null ? storePassword.toCharArray() : null;
		keyStore.load(keyStoreInputStream, password);
	}
	finally
	{
		if (keyStoreInputStream != null)
		{
			try
			{
				keyStoreInputStream.close();
			}
			catch (IOException e)
			{
				// no op
			}
			keyStoreInputStream = null;
		}
	}
	return keyStore;
}

public static String verifyP12(String p12Path,String p12Pwd)
{
            String ret = "验证成功";
            try
            {
	URL ksURL = getStoreURL(p12Path);
                if(ksURL==null)throw new Exception(p12Path+"文件未找到");
                    
	loadKeyStore("PKCS12",ksURL,p12Pwd);
            }
            catch(Exception ex)
            {
                ret = ex.getMessage();
                ex.printStackTrace();
            }
            return ret;
}

public static String verifyJks(String jksPath,String jksPwd)
{
            String ret = "验证成功";
            try
            {
	URL ksURL = getStoreURL(jksPath);
	loadKeyStore("JKS",ksURL,jksPwd);
                
                if(ksURL==null)throw new Exception(jksPath+"文件未找到");
            }
            catch(Exception ex)
            {
                ret = ex.getMessage();
                ex.printStackTrace();
            }
            
            return ret;
}