PHP

Configure Azure SAS Authentication for REST

Demonstrates Rest.SetAuthAzureSas, which associates an AuthAzureSAS provider so requests are authorized with an Azure Shared Access Signature token.

Background. A SAS token grants time-limited, permission-scoped access to Azure Storage resources without exposing the account key on the wire. Use SAS authorization when a query-token approach is preferred over Shared Key headers.

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<?php

use Chilkat2\AuthAzureSAS;
use Chilkat2\Rest;

$rest = new Rest();
$bTls = true;
$bAutoReconnect = true;
try {
    $rest->Connect('example.com', 443, $bTls, $bAutoReconnect);

    // Configure Azure Shared Access Signature (SAS) authentication.  Provide the account access key
    // and the SAS token query parameters; Chilkat adds the SAS token to each request.
    $azSas = new AuthAzureSAS();
    // Normally you would not hard-code secrets in source.  You should instead obtain them from an
    // interactive prompt, environment variable, or a secrets vault.
    $azSas->AccessKey = 'BASE64_ACCOUNT_ACCESS_KEY';

    // Associate the provider with the REST object.
    $rest->SetAuthAzureSas($azSas);

    $responseText = $rest->FullRequestNoBody('GET', '/mycontainer/myblob.txt');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

echo $responseText, "\n";