Ajax call with pre-signed URL giving error

[fzs]

I have created a simple html page which contains an ajax call to API endpoint to retrieve pre-signed URL. Using the URL retrieved from the previous ajax call, I tried upload a sample text file which is resulting in the request signature we calculated does not match the signature you provided. Check your key and signing method response. But when I am using the same URL using CURL, it is working Good. Can someone suggest me what I am missing in the request.

When you are sending the upload, are you also using Authorization Header method at the same time as the URL query method (pre-signed) to send the signature? You shouldn't if you are. My question is referring to this: https://docs.aws.amazon.com/general/late...quest.html

My other recommendation would be to use the SDKs to let the signature handling process be done automatically for you without worrying about security and signing issues.