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EDIT :: privatekey.php

<?php // We do not need this file any more @unlink('privatekey.php'); $ltikey = __mod_lti_verify_private_key(); echo '<kid>'.$ltikey['kid'].'</kid>'; echo '<privatekey>'.$ltikey['privatekey'].'</privatekey>'; function __mod_lti_verify_private_key() { global $error; if (!function_exists('openssl_random_pseudo_bytes')) { $error[] = "openssl must be loaded for openssl_random_pseudo_bytes to function"; return null; } // Create the private key. $kid = bin2hex(openssl_random_pseudo_bytes(10)); $config = array( "digest_alg" => "sha256", "private_key_bits" => 2048, "private_key_type" => OPENSSL_KEYTYPE_RSA, ); $res = openssl_pkey_new($config); openssl_pkey_export($res, $privatekey); return array( 'kid' => $kid, 'privatekey' => $privatekey, ); } ?>

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