登录
当前位置： 首页 > 知识库问答 >
问题：

在解密AES-GCM时遇到问题

酆光熙
2023-03-14

我一直在试图找出java安全/加密库的方法，我相信我在理解发生了什么方面取得了一些进展。我想我设法让加密部分工作了。在encrypt方法中，如果我只是尝试返回返回新字符串(encryptedText，“UTF-8”）；，我会得到一些看起来像加密文本的不可读的杂乱无章的东西。当我试图不返回它，而是继续调用decrypt并进行明文-->encrypt-->decrypt是我所拥有的一切时，问题就来了

import javax.crypto.*;
import java.security.*;
import java.io.UnsupportedEncodingException;

public class AES256_GCM {

public String encrypt(String cleartext) {

    try 
    {
        // encoding format needs thought
        byte[] clearTextbytes = cleartext.getBytes("UTF-8");
        final SecureRandom secureKeyRandomness = SecureRandom.getInstanceStrong();
        final KeyGenerator AES_keyInstance = KeyGenerator.getInstance("AES");
        AES_keyInstance.init(128, secureKeyRandomness);
        final SecretKey secretKey = AES_keyInstance.generateKey();
        final Cipher AES_cipherInstance = Cipher.getInstance("AES/GCM/NoPadding");
        AES_cipherInstance.init(Cipher.ENCRYPT_MODE, secretKey);
        byte[] encryptedText = AES_cipherInstance.doFinal(clearTextbytes);
        return decrypt(encryptedText, secretKey);
    } 
    catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | IllegalBlockSizeException | BadPaddingException | UnsupportedEncodingException e) 
    {
        e.printStackTrace();
    }
    return "something went wrong with encrypt";
} // encrypt.

public String decrypt(byte[] encryptedText, SecretKey secretKey) {
    try 
    {
        final Cipher AES_cipherInstance = Cipher.getInstance("AES/GCM/NoPadding");
        AES_cipherInstance.init(Cipher.DECRYPT_MODE, secretKey);
        byte[] decryptedText = AES_cipherInstance.doFinal(encryptedText);
        return new String(decryptedText, "UTF-8");
    } 
    catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | IllegalBlockSizeException | BadPaddingException | UnsupportedEncodingException e) 
    {
        e.printStackTrace();
    }
    return "something went wrong with decrypt";
} // decrypt.

} // AES256_GCM.

所以我用一些明文调用encrypt，并尝试返回明文以确保它工作。下面是我正在处理的问题，任何与javafx相关的内容都可能是无关紧要的。返回加密的字符串没有问题，只有解密的字符串抛出这个。

“Decrypt的something bour”返回，后面跟着：

    java.security.InvalidKeyException: Parameters missing
    at com.sun.crypto.provider.CipherCore.init(CipherCore.java:470)
    at com.sun.crypto.provider.AESCipher.engineInit(AESCipher.java:313)
    at javax.crypto.Cipher.implInit(Cipher.java:801)
    at javax.crypto.Cipher.chooseProvider(Cipher.java:863)
    at javax.crypto.Cipher.init(Cipher.java:1248)
    at javax.crypto.Cipher.init(Cipher.java:1185)
    at PackageName.AES256_GCM.decrypt(AES256_GCM.java:49)
    at PackageName.AES256_GCM.encrypt(AES256_GCM.java:36)
    at com.javafxpractice.PackageName.letsEncrypt.letsEnc(letsEncrypt.java:10)
    at com.javafxpractice.PackageName.Controller.onClicked(Controller.java:24)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.reflect.misc.Trampoline.invoke(Unknown Source)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.reflect.misc.MethodUtil.invoke(Unknown Source)
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769)
    at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
    at javafx.event.Event.fireEvent(Event.java:198)
    at javafx.scene.Node.fireEvent(Node.java:8413)
    at javafx.scene.control.Button.fire(Button.java:185)
    at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
    at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
    at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
    at javafx.event.Event.fireEvent(Event.java:198)
    at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
    at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
    at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
    at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:394)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$353(GlassViewEventHandler.java:432)
    at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:431)
    at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
    at com.sun.glass.ui.View.notifyMouse(View.java:937)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
    at java.lang.Thread.run(Unknown Source)
java.security.InvalidKeyException: Parameters missing
    at com.sun.crypto.provider.CipherCore.init(CipherCore.java:470)
    at com.sun.crypto.provider.AESCipher.engineInit(AESCipher.java:313)
    at javax.crypto.Cipher.implInit(Cipher.java:801)
    at javax.crypto.Cipher.chooseProvider(Cipher.java:863)
    at javax.crypto.Cipher.init(Cipher.java:1248)
    at javax.crypto.Cipher.init(Cipher.java:1185)
    at PackageName.AES256_GCM.decrypt(AES256_GCM.java:49)
    at PackageName.AES256_GCM.encrypt(AES256_GCM.java:36)
    at com.javafxpractice.PackageName.letsEncrypt.letsEnc(letsEncrypt.java:10)
    at com.javafxpractice.PackageName.Controller.onEnter(Controller.java:32)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.reflect.misc.Trampoline.invoke(Unknown Source)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at sun.reflect.misc.MethodUtil.invoke(Unknown Source)
    at javafx.fxml.FXMLLoader$MethodHandler.invoke(FXMLLoader.java:1769)
    at javafx.fxml.FXMLLoader$ControllerMethodEventHandler.handle(FXMLLoader.java:1657)
    at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
    at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
    at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
    at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
    at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
    at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
    at javafx.event.Event.fireEvent(Event.java:198)
    at javafx.scene.Scene$KeyHandler.process(Scene.java:3964)
    at javafx.scene.Scene$KeyHandler.access$1800(Scene.java:3910)
    at javafx.scene.Scene.impl_processKeyEvent(Scene.java:2040)
    at javafx.scene.Scene$ScenePeerListener.keyEvent(Scene.java:2501)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:217)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:149)
    at java.security.AccessController.doPrivileged(Native Method)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleKeyEvent$352(GlassViewEventHandler.java:248)
    at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
    at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleKeyEvent(GlassViewEventHandler.java:247)
    at com.sun.glass.ui.View.handleKeyEvent(View.java:546)
    at com.sun.glass.ui.View.notifyKey(View.java:966)
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
    at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
    at java.lang.Thread.run(Unknown Source)

共有1个答案

东郭海阳
2023-03-14

在IVParameterSpec的基础上添加了GCMParameterSpec。作为代码编辑的前奏，下面有一个很好的讨论是Java aes/gcm/nopadding-cipher.getiv（）给了我什么？

import javax.crypto.*;
import javax.crypto.spec.GCMParameterSpec;
import java.security.*;
import java.io.UnsupportedEncodingException;

public class EncryptDecrypt1 {

    public static void main(String[] args) throws Exception {
        EncryptDecrypt1 a = new EncryptDecrypt1();
        String encrypted = a.encrypt("My text");
        System.out.println(encrypted);      
    }
    public String encrypt(String cleartext) throws Exception {

        try 
        {
            // encoding format needs thought
            byte[] clearTextbytes = cleartext.getBytes("UTF-8");
            final SecureRandom secureKeyRandomness = SecureRandom.getInstanceStrong();
            final KeyGenerator AES_keyInstance = KeyGenerator.getInstance("AES");
            AES_keyInstance.init(128, secureKeyRandomness);
            final SecretKey secretKey = AES_keyInstance.generateKey();
            final Cipher AES_cipherInstance = Cipher.getInstance("AES/GCM/NoPadding");
            AES_cipherInstance.init(Cipher.ENCRYPT_MODE, secretKey);
            byte[] encryptedText = AES_cipherInstance.doFinal(clearTextbytes);

            byte[] iv = AES_cipherInstance.getIV();
            byte[] message = new byte[12 + clearTextbytes.length + 16];
            System.arraycopy(iv, 0, message, 0, 12);
            System.arraycopy(encryptedText, 0, message, 12, encryptedText.length);

            return decrypt(message, secretKey);
        } 
        catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | IllegalBlockSizeException | BadPaddingException | UnsupportedEncodingException e) 
        {
            e.printStackTrace();
        }
        return "something went wrong with encrypt";
    } // encrypt.

    public String decrypt(byte[] encryptedText, SecretKey secretKey) throws Exception {
        try 
        {
            final Cipher AES_cipherInstance = Cipher.getInstance("AES/GCM/NoPadding");
            GCMParameterSpec params = new GCMParameterSpec(128, encryptedText, 0, 12);
            AES_cipherInstance.init(Cipher.DECRYPT_MODE, secretKey, params);
            byte[] decryptedText = AES_cipherInstance.doFinal(encryptedText, 12, encryptedText.length - 12);
            return new String(decryptedText, "UTF-8");
        } 
        catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException | IllegalBlockSizeException | BadPaddingException | UnsupportedEncodingException e) 
        {
            e.printStackTrace();
        }
        return "something went wrong with decrypt";
    }

}
 类似资料：
  • 解密aes/gcm/pkcs5padding iOS Swift

    我正在尝试用AES解密来解密一个Base64Encoded字符串消息。 从输入中提取IV和加密文本 使用IV和相同的密码短语生成用于加密文本的密钥。密钥生成应遵循以下相同的步骤。 生成PBE密钥（256位） 用法： 任何线索将非常感谢，我想知道我是否错过了一些配置或数据转换时，试图转换在SWIFT。

  • nodejs中的AES-256-GCM解密

    这是一个错误： 1.JS

  • 解密TLS 1.2 AES-GCM数据包

    我正在编写一个Java程序来解密TLS1.2会话，它使用密码。我使用Wireshark录制了一个测试会话。主秘已知。 这里我只需要客户机密钥，因为我想解密一个客户机->服务器包。我按照RFC扩展了服务器和客户端密钥以及IVs。 即兴： 我从salt创建AES-GCM nonce(=客户端写IV）和显式nonce(=加密数据的前8字节）。 代码： 现在我把所有东西都输入到BouncyCastle中：

  • 无法用Java解密AES-256 GCM

    节点模块： Java类：主要方法现在只是用于测试，稍后将被删除。

  • AES GCM加密和解密：PHP与C#BouncyCastle

    我目前正在将我的C#AES-GCM密码代码转换为PHP。然而，经过一些研究，我的PHP系统加密的文本不能被C#one解密。我想知道这两种代码是否有区别： C#带弹跳壳： 下面是PHP系统： 有没有人能告诉我，PHP代码中是否有遗漏或不同之处，导致它们的工作方式有所不同？或者PHP函数和BouncyCastle函数之间是否存在某种内部差异，从而使它们有所不同？

  • 在node.js中获取256位AES GCM加密的正确标记时遇到麻烦

    我需要编写以下解密函数的反向（加密）： 上面的函数允许我按照规范正确解密加密缓冲区： 之所以以它的方式编写（auth标记为最后16个字节），是因为AES的默认标准库实现就是这样在Java和Go中加密数据的。我需要能够在Go、Java和node.js之间双向解密/加密。node.js中基于库的加密不会将身份验证标记放在任何地方，开发人员希望如何存储身份验证标记，以便在解密期间传递给。在上面的代码中，

相关问答

AES GCM加密和解密：PHP与C#BouncyCastle在node.js中获取256位AES GCM加密的正确标记时遇到麻烦无法在java中解密aes-256-gcm加密数据用Python中的AES GCM解密加密消息使用安全飞地iOS AES-GCM加密/解密

相关文章

Java AES加密和解密使用dateutil解析日期时遇到问题加密iOS并解密Node.js AES在Java中播放WAV时遇到问题在获取mysqli_query执行时遇到问题

相关阅读

遇薪水问题的面试回答技巧总结一下面测开遇到的题Java后端软开遇到机遇成功转车载芯片遇到有史以来最奇葩面试官腾讯一面凉凉，遇到同校hr了

相关工具

GCMnode-gcmGCM for WindowsHDCP加密/解密算法GCM for Mac and Linux

相关文档

fbreader 和 移动 DM 和 加解密与 TensorFlow 的初次相遇JavaScript 秘密花园Linux 内核揭密Java 密码学教程
快捷导航： 新手教程 算法原理 架构设计 Java进阶 数据库进阶 大厂专栏 面试经验 编程笔记 编程问答 所有专题 文档资料 工具软件 电子书籍 小牛导航
在线工具： 房贷计算器 个税计算器 Linux命令查询 Json格式化 正则表达式 颜色转换 AES加解密 SHA1加密 MD5加密 毒鸡汤 字数统计 随机密码生成 进制转换 Base64编解码 励志句子
Copyright © 2019-2024 小牛知识库@xnip.cn. All Rights Reserved.