<?php
    $cdrn_domain = "api.testing.cdrn.com";
    $secret_key = "cdrnpassword";
    $api_version = "1.1";
    $method_type = "GET";
    $case_id = "12345";
    $string_date = "2014-06-20T12:06:31Z";
    $string_to_sign = $method_type . "\n" . $cdrn_domain . "\n" . "/partners/cases/$case_id" . "\n" . "" . "\n" . $api_version . "\n" . $string_date . "\n";
 
    $signature = utf8_encode(base64_encode(hash_hmac('sha1', $string_to_sign, $secret_key, false)));
    echo "SIGNATURE[$signature]\n";
 
    $signature = utf8_encode(base64_encode(hash_hmac('sha1', $string_to_sign, $secret_key, true)));
    echo "SIGNATURE[$signature]";
?>

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