The explosion of connected devices and Internet of Things (IoT) has resulted in the generation of a huge amount of data. Digital transactions are also increasing, and the need to authenticate two entities before exchanging data is a necessity. As a result, Public Key Infrastructure (PKI) appears as a relevant solution to create confidence and trust. However, digital transformation is gaining momentum and many alternatives are already available. Blockchain is one of these new ways to design services. The innovative algorithm makes the deployment of new authentication and validation process easy.