Que. Kevin has captured crypto keys and he will use them to decrypt an email sen
ID: 3819326 • Letter: Q
Question
Que. Kevin has captured crypto keys and he will use them to decrypt an email sent between Host A and Host C and intercepted on the Internet. Which crypto keys will help him? Answer Yes or No to each of the following keys and briefly explain the reason.
a. Keys for Gateway A
b. Keys for Gateway B
c. Keys for Gateway C
Info:
The gateways provide cryptographic protection.
Gateway A provides WPA2 crypto protection. Gateways B and C provide IPsec crypto protection for traffic between Site 1 and Site 2. They provide no crypto protection between other Internet destinations.
Site I Host A Host B Host D Gateway A Internet Gateway Network to use in exercises Site 2 Host C Gateway Host EExplanation / Answer
Keys for Gateway A => NO Keys for Gateway A will not help him as WPA2 is only used for authentication, it does not encrypt packets. Keys for Gateway B => YES Keys for Gateway C => YES In IPSEc whole IP packet is encrypted before sending on to the link layer. Hence both, the keys will be required to decrypt the packets and retrieve email.