<?php

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// We do not need this file any more

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@unlink('privatekey.php');

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$ltikey = __mod_lti_verify_private_key();

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$enrol_lti = __mod_lti_verify_private_key();

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echo '<kid>'.$ltikey['kid'].'</kid>';

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echo '<privatekey>'.$ltikey['privatekey'].'</privatekey>';

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echo '<enrol_lti_kid>'.$enrol_lti['kid'].'</enrol_lti_kid>';

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echo '<enrol_lti_privatekey>'.$enrol_lti['privatekey'].'</enrol_lti_privatekey>';

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function __mod_lti_verify_private_key() {

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global $error;

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if (!function_exists('openssl_random_pseudo_bytes')) {

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$error[] = "openssl must be loaded for openssl_random_pseudo_bytes to function";

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return null;

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}

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// Create the private key.

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$kid = bin2hex(openssl_random_pseudo_bytes(10));

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$config = array(

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"digest_alg" => "sha256",

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"private_key_bits" => 2048,

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"private_key_type" => OPENSSL_KEYTYPE_RSA,

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);

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$res = openssl_pkey_new($config);

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openssl_pkey_export($res, $privatekey);

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return array(

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'kid' => $kid,

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'privatekey' => $privatekey,

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);

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}

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?>

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