如何在我的gwt应用程序中导入java.security。* [英] how to import java.security.* in my gwt application

问题描述

我想用gwt开发一个插件。它必须使用java.security。*作为客户端的密钥生成。
i已经提出所有要求
但它显示以下错误。

加载模块

coreservlets.GwtApp1

 加载继承模块'coreservlets.GwtApp1'
加载继承模块'java.security.KeyPair'
 [错误]无法在您的类路径中找到'java / security / KeyPair.gwt.xml'; >可能是拼写错误，或者您可能忘记为源代码包含类路径条目？ 
 [错误]第15行：处理元素'继承'时出现意外异常
  

我在我的gwtapp1.gwt.xml文件中继承了所有相关的类，比如java.security.KeyPair。

我还将jar包含在classpath本身中但仍然错误没有消失。
我应该怎么做.plz建议
这里是我的java代码

  package coreservlets.client; 
 
 import java.io.UnsupportedEncodingException; 
 import java.security.KeyPair; 
 import java.security.KeyPairGenerator; 
 import java.security.NoSuchAlgorithmException; 
 import java.security.NoSuchProviderException; 
 import java.security.PrivateKey; 
 import java.security.PublicKey; 
 import java.security.SecureRandom; 
 
 
 public class Keygen {
 
 private PrivateKey privKey; 
私钥PublicKey pubKey; 
 private static Keygen keygen = null; 
 
 private Keygen（）{
 
} 
 
 public static Keygen getInstance（）{
 
 if（keygen == null）{
 keygen = new Keygen（）; 
} 
 
 return keygen; 
} 
 
 public void KeyGenerator（String ALGORITHAM）{
 KeyPairGenerator keyGen = null; 
 SecureRandom random = null; 
尝试{
 keyGen = KeyPairGenerator.getInstance（ALGORITHAM）; 
} catch（NoSuchAlgorithmException ex）{
 ex.printStackTrace（）; 
} 
尝试{
 random = SecureRandom.getInstance（SHA1PRNG，SUN）; 
 // random = SecureRandom.getInstance（SHA1PRNG）; 
} catch（NoSuchAlgorithmException e）{
 e.printStackTrace（）; 
 
 catch（NoSuchProviderException ex）{
 ex.printStackTrace（）; 
} 
 
 //keyGen.initialize(1024，random）; 
 keyGen.initialize（1024）; 
 KeyPair key = keyGen.generateKeyPair（）; 
 privKey = key.getPrivate（）; 
 pubKey = key.getPublic（）; 
 
 
 $ b public String getPubKeyasString（）{
 // return Base64.encodeBase64String（pubKey.getEncoded（））; 
 try {
 return new String（pubKey.getEncoded（），ISO-8859-1）; 
} catch（UnsupportedEncodingException e）{
 // TODO自动生成的catch块
 e.printStackTrace（）; 
} 
返回null; 
} 
 public String getPriKeyasString（）{
 // return Base64.encodeBase64String（privKey.getEncoded（））; 
尝试{
返回新字符串（privKey.getEncoded（），ISO-8859-1）; 
} catch（UnsupportedEncodingException e）{
 // TODO自动生成的catch块
 e.printStackTrace（）; 
} 
返回null; 
} 
  

}

解决方案

对于密钥生成，您可以使用 gwt-crypto library，但要准备好某些性能问题和不支持的功能。


前段时间，我成功地封装了一个纯粹的js rsa解决方案使用jsni。我带的js是 jsbn.js 图书馆

i want to develop a plugin using gwt. It has to use java.security.* for the key generation on client side. i have made all requirement But it is showing following error.

Loading modules

coreservlets.GwtApp1

Loading inherited module 'coreservlets.GwtApp1'
    Loading inherited module 'java.security.KeyPair'
       [ERROR] Unable to find 'java/security/KeyPair.gwt.xml' on your classpath; >could be a typo, or maybe you forgot to include a classpath entry for source?
    [ERROR] Line 15: Unexpected exception while processing element 'inherits'

i have inherited all the related class like "java.security.KeyPair" in my gwtapp1.gwt.xml file

also i included jar in classpath itself.but still the error has not gone. what should i do.plz suggest here is my java code

package coreservlets.client;

import java.io.UnsupportedEncodingException;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;


public class Keygen {

private PrivateKey privKey;
private PublicKey pubKey;
private static Keygen keygen = null;

private Keygen() {

}

public static Keygen getInstance() {

    if (keygen == null) {
        keygen = new Keygen();
    }

    return keygen;
}

public void KeyGenerator(String ALGORITHAM) {
    KeyPairGenerator keyGen = null;
    SecureRandom random = null;
    try {
        keyGen = KeyPairGenerator.getInstance(ALGORITHAM);
    } catch (NoSuchAlgorithmException ex) {
        ex.printStackTrace();
    }
    try {
        random = SecureRandom.getInstance("SHA1PRNG", "SUN");
        //random = SecureRandom.getInstance("SHA1PRNG");
    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();

    } catch (NoSuchProviderException ex) {
        ex.printStackTrace();
    }

    //keyGen.initialize(1024, random);
    keyGen.initialize(1024);
    KeyPair key = keyGen.generateKeyPair();
    privKey = key.getPrivate();
    pubKey = key.getPublic();

}

public String getPubKeyasString() {
    //return Base64.encodeBase64String(pubKey.getEncoded());
    try {
        return new String(pubKey.getEncoded(),"ISO-8859-1");
    } catch (UnsupportedEncodingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return null;
}
public String getPriKeyasString() {
    //return Base64.encodeBase64String(privKey.getEncoded());
    try {
        return new String(privKey.getEncoded(),"ISO-8859-1");
    } catch (UnsupportedEncodingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return null;
}

}

解决方案

For key generation you can use the gwt-crypto library, but be prepared to certain performance issues and unsupported features.

[Edit] Some time ago, I did success wrapping a pure js rsa solution using jsni. The js I took was the jsbn.js library

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