RSA enc/dec 的 node-forge 包错误答案

【问题标题】：node-forge package error with RSA enc/decRSA enc/dec 的 node-forge 包错误
【发布时间】：2016-02-11 21:03:18
【问题描述】：

我在我的 meteor.js 网络应用程序上使用 node-forge npm。我正在尝试根据此示例对一些纯文本进行 RSA 加密：https://github.com/digitalbazaar/forge#rsa

当我想解密密文时，问题就来了，我想取回明文，它说加密块无效。

按照示例，我必须对字符串中的字节进行加密，以便完成所有操作，但我不明白为什么解密失败？有什么猜测吗？

rsaEncrypt:function(pubPem,privPem,plainText){

console.log(plainText);

var str = plainText;
var bytes = [];

for (var i = 0; i < str.length; ++i) {
  bytes.push(str.charCodeAt(i));
}

console.log("BAJTOVI:");
console.log(bytes);

var publicKey = pki.publicKeyFromPem(pubPem);
console.log(publicKey);

var encrypted = publicKey.encrypt(bytes);
console.log("Encryption: ");
console.log(encrypted);

var privateKey = pki.privateKeyFromPem(privPem);
var decrypted = privateKey.decrypt(encrypted);

console.log("Decryption: ");
console.log(decrypted);

function bin2String(decrypted) {
  var result = "";
  for (var i = 0; i < decrypted.length; i++) {
    result += String.fromCharCode(parseInt(decrypted[i], 2));
  }
  return result;
}
console.log("OPET TEXT:");
console.log(result);

return decryted;

},

我从服务器得到的问题：

Exception while invoking method 'rsaEncrypt' Error: Encryption block is invalid.
I20151110-21:22:05.279(1)?     at Object._decodePkcs1_v1_5 [as decode] (/Users/mrcina/Meteor Projects/cryptonic/.meteor/local/isopacks/npm-container/npm/node_modules/node-forge/js/rsa.js:1446:11)
I20151110-21:22:05.279(1)?     at Object.key.decrypt (/Users/mrcina/Meteor Projects/cryptonic/.meteor/local/isopacks/npm-container/npm/node_modules/node-forge/js/rsa.js:1083:19)
I20151110-21:22:05.279(1)?     at [object Object].Meteor.methods.rsaEncrypt (server/methods.js:49:32)
I20151110-21:22:05.279(1)?     at maybeAuditArgumentChecks (livedata_server.js:1698:12)
I20151110-21:22:05.279(1)?     at livedata_server.js:708:19
I20151110-21:22:05.279(1)?     at [object Object]._.extend.withValue (packages/meteor/dynamics_nodejs.js:56:1)
I20151110-21:22:05.279(1)?     at livedata_server.js:706:40
I20151110-21:22:05.279(1)?     at [object Object]._.extend.withValue (packages/meteor/dynamics_nodejs.js:56:1)
I20151110-21:22:05.280(1)?     at livedata_server.js:704:46
I20151110-21:22:05.280(1)?     at tryCallTwo (/Users/mrcina/.meteor/packages/promise/.0.5.1.1wnrf8h++os+web.browser+web.cordova/npm/node_modules/meteor-promise/node_modules/promise/lib/core.js:45:5)

这行：var decrypted = privateKey.decrypt(encrypted);

【问题讨论】：

标签： node.js encryption meteor cryptography rsa

【解决方案1】：

Forge 不使用整数数组来表示字节；它使用二进制编码的字符串。尝试将您的代码简化为以下内容：

rsaEncrypt:function(pubPem,privPem,plainText){

  console.log(plainText);

  var publicKey = pki.publicKeyFromPem(pubPem);
  console.log(publicKey);

  var encrypted = publicKey.encrypt(forge.util.encodeUtf8(plainText));
  console.log("Encryption: ");
  console.log(encrypted);

  var privateKey = pki.privateKeyFromPem(privPem);
  var decrypted = forge.util.decodeUtf8(privateKey.decrypt(encrypted));

  console.log("Decryption: ");
  console.log(decrypted);

  return decrypted;
}

【讨论】：