创建随机散列字符串，用于电子邮件的闭环验证

I am currently working on a project which requires closed loop email verification. As part of the process I need to generate a random hash string which can be appended to a link sent to the user. When they click the link they will be directed to my site at which time the app will confirm the hash and complete the registration process. For all my hashing I have been using:I am currently working on a project which requi