Systems Security Certified Practitioner – SSCP – Question0789 - Systems Security Certified Practitioner

What enables users to validate each other's certificate when they are certified under different certification hierarchies?

A. Cross-certification
B. Multiple certificates
C. Redundant certification authorities
D. Root certification authorities

Correct Answer: A

Explanation:

Cross-certification is the act or process by which two CAs each certifiy a public key of the other, issuing a public-key certificate to that other CA, enabling users that are certified under different certification hierarchies to validate each other’s certificate. Source: SHIREY, Robert W., RFC2828: Internet Security Glossary, may 2000.