J2EE Spring Security一次密码

Question

我必须实现一次性密码。对于单一请愿书，虽然互联网上有更多信息，但我仍然有疑问。

可以使系统重新启动，没有使用数据库？

Answer 1

The only way I know to store persistent data without databases is to write into an external file (actually databases are only files in disguise). In your case you have to carefully think about security issues of this solution. You have to make sure that your file is stored in a secure repository.