Blockchain has a wide range of applications on the internet. As it is decentralized by design, it is an alternative to the many traditional transactional systems. In order for a blockchain system to be viable (scalability, interoperability and sustainability), the complex and time/power consuming cryptographic operations associated with the blockchain should be offloaded to an accelerating system. Our solution is a secure public key infrastructure engine that can be used to offload compute-intensive public key operations such as signature generations and verifications.