encrypt md5/ sha1 by node.js

encrypt.js

var connect = require('connect');
var uid = connect.utils.uid(20);
console.log('origin uid: ' + uid);

var crypto = require('crypto');

var sha1 = crypto.createHash('sha1');
var d = sha1.update(uid).digest('hex');
console.log('encrypt uid(sha1): ' + d);