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<?php /** * Implement nonce helper methods. * * @link https://automattic.com * @since 1.0.0 * @package automattic/jetpack-boost */ namespace Automattic\Jetpack_Boost\Lib; /** * Class Nonce */ class Nonce { /** * This is a light clone of wp_create_nonce and wp_verify_nonce which skips the UID and cookie token parts, * so it can be used in anonymous HTTP callbacks. It is therefore not as secure, so be careful. * * @param string $action The action. */ public static function create( $action ) { return substr( wp_hash( wp_nonce_tick() . '|' . $action, 'nonce' ), -12, 10 ); } /** * Verify the nonce. * * @param string $nonce The nonce. * @param string $action The action. */ public static function verify( $nonce, $action ) { $i = wp_nonce_tick(); // Current nonce. $expected = substr( wp_hash( $i . '|' . $action, 'nonce' ), -12, 10 ); if ( hash_equals( $expected, $nonce ) ) { return 1; } // Nonce generated 12-24 hours ago. $expected = substr( wp_hash( ( $i - 1 ) . '|' . $action, 'nonce' ), -12, 10 ); if ( hash_equals( $expected, $nonce ) ) { return 2; } return false; } }