如何使用Node.js的加密库创建scrypt哈希？

Question

function sha512(s){
    var sha = crypto.createHash('sha512');
    sha.update(s);
    return sha.digest('hex');
};
exports.sha512 = sha512;

我现在正在使用它，但我想将它切换为scrypt。 我怎样才能做到这一点？

Answer 1

你应该使用node-scrypt 。

它有明确的API和良好的文档。

var scrypt = require("scrypt");
var scryptParameters = scrypt.params(0.1);

var key = new Buffer("this is a key"); //key defaults to buffer in config, so input must be a buffer

//Synchronous example that will output in hexidecimal encoding
scrypt.hash.config.outputEncoding = "hex";
var hash = scrypt.hash(key, scryptParameters); //should be wrapped in try catch, but leaving it out for brevity
console.log("Synchronous result: "+hash);

//Asynchronous example that expects key to be ascii encoded
scrypt.hash.config.keyEncoding = "ascii";
scrypt.hash("ascii encoded key", {N: 1, r:1, p:1}, function(err, result){
    //result will be hex encoded
    //Note how scrypt parameters was passed as a JSON object
    console.log("Asynchronous result: "+result);
});

Answer 2

我将把我的实现放在那里： https ： //www.npmjs.org/package/scryptsy 。

这是一个例子：

var scrypt = require('scryptsy') //npm install --save scryptsy

var key = "pleaseletmein" //can be of type 'Buffer'
var salt = "SodiumChloride" //can be of type 'Buffer'
var data = scrypt(key, salt, 16384, 8, 1, 64)
console.log(data.toString('hex')) 
// => 7023bdcb3afd7348461c06cd81fd38ebfda8fbba904f8e3ea9b543f6545da1f2d5432955613f0fcf62d49705242a9af9e61e85dc0d651e40dfcf017b45575887

文档： http ： //cryptocoinjs.com/modules/crypto/scryptsy/

Answer 3

带（de）序列化的简化barrysteyn / node-scrypt同步示例：

    let scrypt = require('scrypt')
    let scryptParameters = scrypt.paramsSync(0.1)

    function encode(s) {
      return scrypt.kdfSync(s, scryptParameters).toString('Base64')
    }

    function verify(encoded, s) {
      return scrypt.verifyKdfSync(new Buffer(encoded, 'Base64'), s)
    }

    // Example:
    let s = encode('my password')  // c2NyeXB0AAwAAAAI....
    verify(s, 'my password')   //true
    verify(s, 'my pa$$word')   //false

在节点7.0.0上测试，scrypt 6.0.3。