Create an AWS-S3 like Curl PUT command...
Set the s3curlIN API URL one minute ahead to match shared secret
Input your options in this Command Prompt command-line simulator...
[-resource] [-id] [-key] [-contentType] [-acl] [-put] [-contentMD=] [-delete] [-version] [-help]

freq dir -d ext ---***


method PUT

httpdate Mon, 10 Aug 2020 12:10: +0000
stringToSign PUT Mon,10Aug202012:11:+0000

b64digest <-secret = gUtkTER09uR7AIoHSlHOHg <-
b64digest <-stringToSign = 1B2M2Y8AsgTpgAmY7PhCfg <-PUT Mon,10Aug202012:11:+0000
MD5 signature = 1B2M2Y8AsgTpgAmY7PhCfg==
b64 SHA256 signature valid for 15 minutes = Mon,10Aug202012:11:+0000 &Authorization:AWS=:
stringToSign qr code

MD5-2 =

Curl args = -HDate: Mon,10Aug202012:11:+0000-HAuthorization: AWS :-T-XDELETE
Curl not Ok