Public key infrastructure for better IT security
Public key infrastructure, or PKI, is a new technology, designed to increase the remote access security of apps and other resources. Compared to traditional login methods using an ID and password or multi-factor identification (MFA), it is a lot less vulnerable and more difficult to breach.
In the last three years especially, working methods have been revolutionised by trends such as smart working which are more susceptible to IT security breaches. As a result, this technology has already gained popularity, as it provides business owners with a strong defence strategy against the cyber criminals and their illegal activities.
How public key infrastructure works; the PKI digital certificate
The technical definition of public key infrastructure is a technology based on standard certificates which combine authentication and protection systems in order to provide the maximum level of security possible for all remote connections and communications.
In practice, individual identity verification takes place via the use of copies of encrypted asymmetrical keys, which only the Public Key Infrastructure can recognise and interpret correctly. In other words, a digital PKI certificate:
- cannot be discovered in any way (in contrast to passwords which can easily be guessed or stolen using specially-designed software);
- can verify the identity of the user or device cryptographically;
- is easier to manage compared to traditional passwords;
- has an expiry date;
- can be revoked at any time if it becomes compromised, immediately denying all access to resources.
Only if the login credentials entered are correct and correspond exactly is it possible to access the network and use it to perform tasks. This essential feature allows both the employee and the whole company much better protection in terms of digital security.
Application and introduction of the PKI
Public key infrastructure has a wide range of applications, including almost every type of communication. Whether it is connecting users, user and machine, or machine and machine, everyone can benefit greatly from the introduction of a PKI. Its most common uses include:
- company or local networks;
- mobile devices;
- email;
- IoT devices;
- document exchange.
Public Key Infrastructure is already widely used in modern communication devices such as tablets and latest generation smartphones. As regards everyday digital services, it:
- enables secure connections between the client and the Lightweight Directory Access Protocol server;
- supports VPNs during authentication of endpoint communications on non-secure networks;
- encrypts and decrypts email messages;
- protects remote data, accessed via SSH.
While managing a PKI was quite complex and costly in the past, it is now readily accessible and easy to implement. It is now so commonly found in modern devices that people use it without realising, as in the case of un-interrupted login checks, which have replaced multifactor authentication.
Improving company IT security through the PKI and training
As mentioned above, one of the most frequent uses of public key infrastructure involves strengthening company IT security. In light of remote working’s growing popularity, many companies have decided to use this technology to protect their network.
Nevertheless, it is important to underline that nowadays, it is not sufficient to merely re-organise a company’s digital defences and make them stronger, as in most cases, the most serious vulnerabilities originate among their team of staff. If a company decides to add a PKI to their systems, it is imperative that all employees are adequately trained so that they are aware of how to securely use the tools at their disposal.
