使用 node.js 创建的 google 云存储对象的签名 URL 无法过期

Question

正在使用 node.js 创建 google 云存储对象的签名 URL。

这是我的代码

var crypto = require("crypto");
var fs = require("fs");

var expiry = new Date().getTime() + 3600;
var key = 'the_target_file';
var bucketName = 'bucket_name';
var accessId = 'my_access_id';
var stringPolicy = "GET\n" + "\n" + "\n" + expiry + "\n" + '/' + bucketName + '/' + key;
var base64Policy = Buffer(stringPolicy, "utf-8").toString("base64");   
var privateKey = fs.readFileSync("gcs.pem","utf8");
var signature = encodeURIComponent(crypto.createSign('sha256').update(stringPolicy).sign(privateKey,"base64"));   
var signedUrl = "https://" + bucketName + ".commondatastorage.googleapis.com/" + key +"?GoogleAccessId=" + accessId + "&Expires=" + expiry + "&Signature=" + signature;

console.log(signedUrl);

它工作正常。但是如何将过期时间减少到10秒，否则。

Answer 1

下面的代码现在给出了正确的输出。

var crypto = require("crypto");
var fs = require("fs");

var URL_VALID_DURATION = 1000 * 10;//for 10 seconds
var expiry = Math.floor(((new Date).getTime() + URL_VALID_DURATION) / 1000);
var key = 'the_target_file';
var bucketName = 'bucket_name';
var accessId = 'my_access_id';
var stringPolicy = "GET\n" + "\n" + "\n" + expiry + "\n" + '/' + bucketName + '/' + key;
var base64Policy = Buffer(stringPolicy, "utf-8").toString("base64");   
var privateKey = fs.readFileSync("gcs.pem","utf8");
var signature = encodeURIComponent(crypto.createSign('sha256').update(stringPolicy).sign(privateKey,"base64"));   
var signedUrl = "https://" + bucketName + ".commondatastorage.googleapis.com/" + key +"?GoogleAccessId=" + accessId + "&Expires=" + expiry + "&Signature=" + signature;

console.log(signedUrl);

使用 node.js 创建的 google 云存储对象的签名 URL 无法过期

Could'nt expire SignedURL of google cloud storage object created using node.js

node.js

google-cloud-storage