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 ---***

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method PUT

resource
httpdate Thu, 14 Dec 2017 02:15: +0000
acl
stringToSign PUT Thu,14Dec201702:16:+0000

b64digest <-secret = NO0iMSJ+9EVcVtpbVY+jBQ <-
b64digest <-stringToSign = 1B2M2Y8AsgTpgAmY7PhCfg <-PUT Thu,14Dec201702:16:+0000
MD5 signature = 1B2M2Y8AsgTpgAmY7PhCfg==
b64 SHA256 signature valid for 15 minutes =

https://s3.amazonaws.com?id=&key=&method=PUT Thu,14Dec201702:16:+0000 &Authorization:AWS=:
stringToSign qr code


MD5-2 =

Curl args = -HDate: Thu,14Dec201702:16:+0000-HAuthorization: AWS :-T-XDELETE
Curl not Ok