Exam2025Proposed solution included

CEC 304 Data Integrity and Security Exam 2025

About this paper

CEC 304: Second Semester Examination, 20/06/2025 (answer all questions), University of Buea: the four core security-service definitions, a DES iteration diagram, the fixed DES-password algorithm, and a brute-force password-cracking time estimate; an IKE/Diffie-Hellman exercise (same secret parameters as Paper 3, different sub-questions); a Kerberos ticket/authenticator exercise (same artificial keys as Papers 6/9); and a one-time (Lamport/Winternitz-style) digital signature built from an iterated CBC-based one-way function.

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University of Buea

College of Technology - COT

Computer Engineering - CET

CEC3042025

Data Integrity and Security

Exam · Second Semester · Level 300

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At a glance

Course code
CEC304 (CEC 304)
Type
Exam
Year
2025
Level
Level 300
Semester
Second Semester
Proposed solution
Included

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