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Quick PHP implementation of AWS Signature Version 4 docs example request
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| <?php | |
| // See docs here: https://docs.aws.amazon.com/general/latest/gr/sigv4_signing.html | |
| // running example here: https://3v4l.org/E3oBG | |
| $body = ''; | |
| $bodyHash = hash('sha256', $body); | |
| $canonicalRequest = <<<HEREDOC | |
| GET | |
| / | |
| Action=ListUsers&Version=2010-05-08 | |
| content-type:application/x-www-form-urlencoded; charset=utf-8 | |
| host:iam.amazonaws.com | |
| x-amz-date:20150830T123600Z | |
| content-type;host;x-amz-date | |
| $bodyHash | |
| HEREDOC; | |
| $canonicalRequestHash = hash('sha256', $canonicalRequest); | |
| $stringToSign = <<<HEREDOC | |
| AWS4-HMAC-SHA256 | |
| 20150830T123600Z | |
| 20150830/us-east-1/iam/aws4_request | |
| $canonicalRequestHash | |
| HEREDOC; | |
| $region = 'us-east-1'; | |
| $service = 'iam'; | |
| $date = '20150830'; | |
| $kSecret = 'wJalrXUtnFEMI/K7MDENG+bPxRfiCYEXAMPLEKEY'; | |
| $kDate = hash_hmac('sha256', $date, 'AWS4' . $kSecret, TRUE); | |
| $kRegion = hash_hmac('sha256', $region, $kDate, TRUE); | |
| $kService = hash_hmac('sha256', $service, $kRegion, TRUE); | |
| $kSigning = hash_hmac('sha256', "aws4_request", $kService, TRUE); | |
| $signature = hash_hmac('sha256', $stringToSign, $kSigning); | |
| echo $signature; |
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