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(a) Briefly explain the following security goals provided by cryptography: confidentiality, authentication, integrity and non-repudiation.
(b) State Kerckhoff's Principle and explain how it relates to cryptanalysis.
(c) Describe the chosen cipher text attack on encrypted messages.
(d) You have intercepted a message encrypted with a Caesar cipher. The ciphertext starts with HWDUYFSFQDXNX and you know the plaintext starts with c. Find the key and decrypt the message.
(e) Use Euclidean's algorithm to calculate gcd(763, 1729).
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define .
Question: (a) Describe fully with example the two access control methods available to implement database security. (b) Discuss why database statistics (meta data) provide es
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Transposition technique
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implementing password policy in organisation
Q. Explain the random key distribution? The triple key management mechanisms ensure a better and complete security solution using the random key distribution mechanism. In this
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