Cab340 cryptography - Study guides, Class notes & Summaries
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CAB340 - Cryptography Final Exam Questions And Answers Verified 100% Correct!!
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Confidentiality - Only authorised people can read a message. A 
key is needed in order to read the message. 
Authentication - Only authorised people can write a message. A 
key is needed in order to write the message. 
Symmetric key cipher - KE = KD (or can easily be deduced 
from one another). 
Symmetric key cipher - Encryption and decryption keys known only to the sender and 
receiver. 
Symmetric key cipher - Requires a secure channel for transmission of the 
cryptographic key. 
Asymmetric key...
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CAB340 – Cryptography and Network Security Final Exam- Questions & Answers
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CAB340 – Cryptography and Network Security Final Exam- Questions & Answers 
 
1.	Distinguish between symmetric-key and asymmetric-key cryptosystems.:answer: - Aysmmetric key cryptography utilizes two separate keys, a public and a private key, as opposed to symmetric key cryptography, which only utilizes one key. 
While encryption and decryption in symmetric key cryptography is based on substi- tutions and permutations of symbols, encryption in asymmetric key cryptography is based off of applyi...
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CAB340 – Cryptography and Network Security Final Exam- Questions & Answers .
- Exam (elaborations) • 5 pages • 2023
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Distinguish between symmetric-key and asymmetric-key cryptosystems. - ANSWER - Aysmmetric key cryptography utilizes two separate keys, a public and a private key, as opposed to symmetric key cryptography, which only utilizes one key. 
While encryption and decryption in symmetric key cryptography is based on substitutions and permutations of symbols, encryption in asymmetric key cryptography is based off of applying mathematical functions to numbers. 
 
Distinguish between public and private keys...
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