Question

Which system uses a trusted third party interface?

(a) Public-Key Certificates

(b) Public announcements

(c) Publicly available directories

(d) Public-Key authority

I got this question during an internship interview.

The above asked question is from Public Keys and X.509 Certificates-I in portion Message Authentication Codes, Whirlpool Algorithm and Key Management and Distribution of Cryptograph & Network Security

Answer 1

Correct answer is (a) Public-Key Certificates

Explanation: Public-Key certificates use a trusted third party interface.