我如何将盐作为字符串存储,而以后仍用作缓冲区?

时间:2019-02-03 19:12:50

标签: node.js mongoose hash cryptojs pbkdf2

我正在尝试添加密码,但是出现以下错误消息:

  

(节点:958)MaxListenersExceededWarning:可能的事件发射器内存   检测到泄漏。添加了11个出口侦听器。使用generator.setMaxListeners()   增加限制

     

TypeError:Salt必须是缓冲区

at pbkdf2 (crypto.js:644:20)
at Object.exports.pbkdf2 (crypto.js:624:10)
at model.exports.UserCredentialsSchema.methods.setPassword (/Users/friso/Documents/projects/MEANpress/server/src/schemas/user-credentials.schema.ts:35:5)
at App.setupMongoose (/Users/friso/Documents/projects/MEANpress/server/src/App.ts:42:15)
at new App (/Users/friso/Documents/projects/MEANpress/server/src/App.ts:14:14)
at Object.<anonymous> (/Users/friso/Documents/projects/MEANpress/server/src/server.ts:5:13)
at Module._compile (module.js:635:30)
at Module.m._compile (/Users/friso/Documents/projects/MEANpress/server/node_modules/ts-node/src/index.ts:439:23)
at Module._extensions..js (module.js:646:10)
at Object.require.extensions.(anonymous function) [as .ts] (/Users/friso/Documents/projects/MEANpress/server/node_modules/ts-node/src/index.ts:442:12)
at Module.load (module.js:554:32)
at tryModuleLoad (module.js:497:12)
at Function.Module._load (module.js:489:3)
at Function.Module.runMain (module.js:676:10)
at Object.<anonymous> (/Users/friso/Documents/projects/MEANpress/server/node_modules/ts-node/src/bin.ts:157:12)
at Module._compile (module.js:635:30)

我正在尝试为此模式和方法做

export var UserCredentialsSchema: Schema = new Schema({
    username: {
        type: String,
        lowercase: true,
        unique: true
    },
    password: String,
    salt: String
});

UserCredentialsSchema.methods.setPassword = function (password: string): void {
    randomBytes(saltLength, (err, buf) => {
        console.error(err);
        this.salt = buf.toString();
    });
    pbkdf2(password, this.salt, hashIterations, hashLength, digest, (err, derivedKey) => {
        console.error(err);
        this.hashedPassword = derivedKey;
    });
};

从在线文档和教程中,我了解到crypto会自行将盐的字符串转换为缓冲区,但是此错误使我不以为然。

也许我错过了使用pbkdf2的任何步骤吗?

尝试在设置中创建管理员用户时出现错误:

const admin = new UserCredentials();
admin.username = 'admin';
admin.setPassword('admin');
admin.save();

链接到Github中的源代码:

1 个答案:

答案 0 :(得分:2)

如果您通过回调调用randomBytes(我假设它是crypto.randomBytes),则该过程是异步进行的。因此,在调用pbkdf2时,this.salt尚未初始化。

将调用移至pbdkf2'回调内的randomBytes,或使用隐式同步版本:

try {
  this.salt = randomBytes(saltLength);
} catch (err) {
  // handle err here
}