用Node.js的加密和加密與服務的工人

Question

的源代碼window.crypto解密：https://github.com/HectorAnadon/Crypto-NodeJS-window.crypto

我使用AES-128-GCM從服務器的Node.js發送加密圖片的服務人員（腳本運行在Web瀏覽器背景中），我試圖解密它。通訊效果良好，因爲Web瀏覽器中顯示未加密的圖片。我得到一個異常，這是控制檯爲我打印的內容：解密錯誤：OperationError :(匿名函數）@ service_worker.js錯誤代碼：310

service_worker.js中的行310是：console.error（「Decryption error：」+ err）; // Line 310

你對我在做什麼有什麼不瞭解嗎？非常感謝，我非常感謝。

下面是使用加密的Node.js（文件位置：https://nodejs.org/api/crypto.html）加密代碼

// Nodejs encryption with GCM 
// Does not work with nodejs v0.10.31 
var fs = require('fs'); 
var crypto = require('crypto'); 
var algorithm = 'aes-128-gcm'; 
var key = '3zTvzr3p67VC61jm'; 
// generate a new iv for each encryption 
// As this is for testing I always use the same iv 
var iv = '60iP0h6vJoEa'; 


function encrypt(text) { 
    var cipher = crypto.createCipheriv(algorithm, key, iv) 
    var encrypted = cipher.update(text); 
    return encrypted; 
} 
var text = fs.readFileSync('mustang_encrypted.jpg'); 
var hw = encrypt(text); 

而這種使用window.crypto是服務工作者解密代碼（文件位置：https://developer.mozilla.org/en-US/docs/Web/API/Window/crypto）

//ArrayBuffer of the data we received 
function(bodyArrayBuffer) { 

    var cryptoObj = crypto; 
    var cryptoSubtle = cryptoObj.subtle; 

     /* 
     * IMPORT KEY 
     */ 
    string2ArrayBuffer("3zTvzr3p67VC61jm", function (keyBuffer) {   
     console.log("keyBuffer length: " + keyBuffer.byteLength); 
     cryptoSubtle.importKey(
      "raw", //can be "jwk" or "raw" 
      keyBuffer, 
      { //this is the algorithm options 
       name: "AES-GCM", 
      }, 
      false, //whether the key is extractable (i.e. can be used in exportKey) 
      ["encrypt", "decrypt"] //can be any combination of "encrypt" and "decrypt" 
     ).then(function(key){ 
      //returns the symmetric key 
      /* 
      * DECRYPTION 
      */ 
      string2ArrayBuffer("60iP0h6vJoEa",function (myIV) { 
       cryptoSubtle.decrypt(
         { 
          name: "AES-GCM", 
          iv: myIV, //The initialization vector you used to encrypt 
          tagLength: 128, //The tagLength you used to encrypt 
         }, 
         key, //from generateKey or importKey above 
         bodyArrayBuffer //ArrayBuffer of the data 
        ) 
        .then(function(decrypted){ 
         //returns an ArrayBuffer containing the decrypted data 
         console.log(new Uint8Array(decrypted)); 
         //send response 
         var newResponse = new Response(decrypted, init); 
         console.log("Returning \"decrypted\" response!"); 
         accept(newResponse); 
        }) 
        .catch(function(err){ 
         console.error("Decryption error: " + err); //Line 310 
        }); 
      }); 
     }) 
     .catch(function(err){ 
      console.error(err); 
     }); 
    }); 
} 

Answer 1

如果我沒有記錯的話，窗口對象在ServiceWorker中不可用，所以如果您嘗試訪問window.crypto，則會導致錯誤。