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Question:
a) Explain what you understand by the term brute force attack, giving an example of such an attack
b) Briefly outline the concept of Caesar cipher and identify any associated weaknesses.
c) Explain what you understand by encryption/decryption using a suitable illustration to support your answer and state on what two things the security of encrypted data is entirely dependent.
d) Differentiate between the symmetric and the asymmetric encryption system providing illustrations where necessary to support your answer.
e) The following technologies can be applied to an e-banking infrastructure to ensure security. Briefly explain the role of each one of them.
(i) SSL (Secure Socket Layer) (ii) Digital Certificate
Problem (a) The IEEE 802 series of standards describe both the Physical and Data Link layers of their respective technologies. Two important standards are 802.3 and 802.5, respect
Attacks on Cryptosystems Attacks are attempts to achieve unauthorized access to secure communications have characteristically used brute force attacks. Attacker may alternatively
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