Question

What role does the trusted third party serve in public-key certificates? Select all that apply.

Group of answer choices

d) Publishes its own private key so others can use it to verify the certificates it issues

b) Publishes its own public key so others can use it to verify the certificates it issues

a) Signs public-key certificates using its private key

c) Signs public-key certificates using its public key

Answer 1

Answer = correct option is A and C

Reason = role of trusted third party serve in public key certificate is -

• Signs public key certificate using its private key
• Signs public key certificate usings its public key

Other option are incorrect because -

• Though it publishes its own private key but this private key is given secretly to the owners for issue or verification of certificates , which means others cannot use it to verify. Therefore option D is incorrect
• It publishes it private key and not public key , public key is autogenerated hence option B is incorrect