不能过期使用node.js创build的Google云存储对象的SignedURL

使用node.js创buildGoogle云存储对象的signedURL

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); 

它的工作正常。 但如何将失效时间缩短至10秒或其他。

Answer 1

下面的代码现在给我正确的输出。

 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);