What is the Role of Certifying Authority?
A certificate authority is a body, that is either public or private, that seeks to fill the requirement for trusted third-party services into E-commerce. A certificate authority accomplishes that through issuing digital certificates which attest to certain facts regarding the subject of the certificate. VeriSign is particular pioneering CA's.
IN the matter of credit cards the CCA that is, cardholder certificate authority issues the certificate to cardholders, the merchant certificate authority (MCA) to merchants who manages e-stores, and the payment gateway certificate authority (PCA) to payment gateway service providers.