pageon/expiringtoken

A cryptographically safe token with a build in customizable expiration date

Expiring Token

The expiring token generates a random token of 128 characters with an expiration date.

The token uses base64 but the length is calculated so that it is url safe, so no padding with the = character.

The actual token is generated with random_bytes with a length of 32

Installation

You can add this library as a local, per-project dependency to your project using Composer:

composer require pageon/expiring-token

Public api

ExpiringToken::create

You can create a new token this way. It accepts a DateInterval as optional parameter to set a different expiration date.

The default expiration date is 3 days.

ExpiringToken::fromString

Used to create an instance of the token from the string representation

ExpiringToken::__toString

This turns the class instance into the string version of the token when the instance is used as or cast to a string.

ExpiringToken::validateAgainst

This can be used to validate the current token against an other token

• When the tokens maths this method will return true
• An InvalidToken exception will be thrown if the tokens don't match
• An TokenHasExpired exception will be thrown if the token has expired

ExpiringToken::hasExpired

Returns a bool indicating if the current token has expired

ExpiringToken::getExpiresOn

Can be used to get the expiration date of the token