In order to deploy public key cryptographic schemes in practice, one first needs to establish a public key infrastructure. This is normally done via the deployment of certificate authority. Investigate the standards for public key infrastructure (PKI) deployment and application scenarios.

- Evaluate the available standards for PKI.

-How do browsers (e.g., IE, Firefox, Chrome, or others) implement a PKI? How secure is this implementation and can you design an attacking scenario to break the PKI within one of the commonly used browsers?