By now you probably have read of the Equifax data leakage. This reminded me of the idea of secure pseudonymous identifiers I had been thinking on for some time. Secure pseudonymous identifiers make use of cryptography to make it hard or impossible to recover the original identifiers representing a specific person. To be sincere, I wouldn’t be surprised if somebody else came with this idea first and named it something else since it’s quite simple. Sadly, I really haven’t had the time to check that out.
In this article I will introduce the concept of identifiers then pseudonymous identifiers and finally secure pseudonymous identifiers. I will also explain why they are a very useful technique to deter the risk of leakage on data whose only purpose is identifying an individual like U.S.A.’s SSN numbers or Spanish ID card numbers among others.