amazon web services - AWS S3 pre signed URL without Expiry date

Question

Is there any way that I can generate Pre-Signed URL's without any expiry date ? I'm developing a Email app where my attachments will be saved in S3. Also please let me know what is the best way to download attachments via JavaScript SDK.

I'm using below code

var params = {Bucket: 'bucket', Key: 'key', Expires: 60};
var url = s3.getSignedUrl('getObject', params);
console.log('The URL is', url);

Answer 1

The maximum expiration time for presigned url is one week from time of creation. So there is no way to have a presigned url without expiry time.