Question: (a) Distinguish between cryptography and cryptographic systems. (b) Distinguish between cryptographic systems and cryptographic system standards. (c) Why is the first handshaking stage the negotiation

(a) Distinguish between cryptography and cryptographic systems.
(b) Distinguish between cryptographic systems and cryptographic system standards.
(c) Why is the first handshaking stage the negotiation of security methods and options?
(d) What is an impostor?
(e) What is authentication?
(f) What is mutual authentication?
(g) Why is a secure keying phase necessary?

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