How to delete all objects from a aws-s3-bucket using AWS API endpoint – Amazon Web Sevices

I am trying to delete an aws-s3-bucket. Before deletion of the s3 bucket, all objects inside the bucket must be deleted. AWS provides an api endpoint for this task:
https://docs.aws.amazon.com/AmazonS3/latest/API/API_DeleteObjects.html

It accepts keys of the object to be deleted. I do not want to specify each key manually and I am using a wildcard character(‘*’) for it.

URL used:

https://bucket-name.s3.us-east-1.amazonaws.com/?delete

I am passing following headers:

{
  "Content-Type": "application/xml",
  "Content-MD5": "dORwpp72d+B0KHD1GROozQ==",
  "Host": "bucket-name.s3.us-east-1.amazonaws.com",
  "Content-Length": 50,
  "X-Amz-Security-Token": "*****",
  "X-Amz-Content-Sha256": "*****",
  "X-Amz-Date": "*****",
  "Authorization": "*****"
}

Content-MD5 is the hash of the request body.

I performed following experiments:

1. Used following request Body:

<Delete><Object><Key>*</Key></Object></Delete>

I was expecting that this will delete all objects but no objects got deleted.
Probably this happened because its considering * as a key which is not the key of any object. The
response body returned was:

<?xml version="1.0" encoding="UTF-8"?>
<DeleteResult xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
<Deleted><Key>*</Key></Deleted></DeleteResult>

2. Did minor changes to request body, like changing * to &#42 which is encoded form of * but the error remains the same.
3. I tested whether I can delete single objects by entering key for them, which was success.

Is there a way I can delete all objects of the s3 bucket without typing all the keys manually?

I have to perform this operation using AWS signed request.