Cryptography final - Study guides, Class notes & Summaries
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Cryptography Final Exam Study Set (2023)- Questions & Answers (Rated A)
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The ______________ is the message after decryption - ANSWER - plaintext 
 
What type of cipher is the Vigenere cipher? - ANSWER - polyalphabetic 
 
What is the decryption of bsujqsyodysw by use of Vigenere cipher with the key "USF?" - ANSWER - happynewyear 
 
In Vernam cipher, its pad must be used just one time. - ANSWER - true 
 
What is the encryption of HAPPYNEWYEAR by use of Caesar cipher with its encryption key 10? - ANSWER - rkzzixogiokb 
 
Vigenere cipher overcomes the problem of a smal...
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Cryptography Final Exam (2023)- Complete Questions & Answers (Graded A+)
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Cryptography Final Exam (2023)- Complete Questions & Answers (Graded A+) 
Cryptography Final Exam (2023)- Complete Questions & Answers (Graded A+) 
 
Keys used in an encryption, and the corresponding decryption functions must be the same - ANSWER - False 
 
For a Shannon cipher(E,D) defined over (k,m,c), D(k, E(k,m))=m - ANSWER - True 
 
Knowing that entropy is a measure of randomness (more randomness =less predictability = more entropy), we can tell that ABCDEFGHHHHHHH has higher entropy than A...
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Introduction to Cryptography Final Review Answers and Explanations INFORMATIO C839
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This cloud model is composed of five essential characteristics, three service models, 
and four deployment models. 
Please match the characteristics below with their descriptions 
Characteristic Description 
1. Broad 
Network 
Access 
a. The provider’s computing resources are combined to 
serve multiple consumers using a multi-tenant model, 
with different physical and virtual resources dynamically 
assigned and reassigned according to consumer 
demand 
2. Metered 
Access b. Consumer can unila...
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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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Cryptography Final Exam Study Guide- Questions & Answers (100% verified)
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What security services does cryptography provide? What security services does cryptography not provide? - ANSWER - Provides: 
Confidentiality 
Integrity 
Authentication 
Non Repudiation 
 
Does Not Provide: 
1. Access Control 
 
Data confidentiality: How to achieve data confidentiality? How to protect the confidentiality of bulk data (say 1 Giga bytes)? - ANSWER - Encryption 
 
What does Kerckhoffs' assumption/principle tell us? Why is it important? - ANSWER - "a cryptosystem should be s...
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WGU C839 OBJECTIVE ASSESSMENT FINAL/WGU C839 INTRODUCTION TO CRYPTOGRAPHY NEWEST 2024-2025 COMPLETE 400 QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
- Exam (elaborations) • 109 pages • 2024
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WGU C839 OBJECTIVE ASSESSMENT 
FINAL/WGU C839 INTRODUCTION TO 
CRYPTOGRAPHY NEWEST 
COMPLETE 400 QUESTIONS AND CORRECT 
DETAILED ANSWERS (VERIFIED ANSWERS) 
|ALREADY GRADED A+||BRAND NEW!!
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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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Computer Security Principles and Practice 4th Edition By William Stallings - Test Bank
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Chapter 2 – Cryptographic Tools 
 
TRUE/FALSE QUESTIONS: 
 
T	F	1. Symmetric encryption is used primarily to provide confidentiality. 
T	F	2. Two of the most important applications of public-key encryption are 
 digital signatures and key management. 
 
T	F	3. Cryptanalytic attacks try every possible key on a piece of ciphertext 
 until an intelligible translation into plaintext is obtained. 
 
T 	F	4. The secret key is input to the encryption algorithm. 
 
T	F	5. Triple DES tak...
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WGU C839 OBJECTIVE ASSESSMENT FINAL INTRODUCTION TO CRYPTOGRAPHY EXAM 2024-2025 WITH ACTUAL CORRECT QUESTIONS AND VERIFIED DETAILED ANSWERS |FREQUENTLY TESTED QUESTIONS AND SOLUTIONS |ALREADY GRADED A+|BRAND NEW!!!|GUARANTEED PASS |LATEST UPDATE
- Exam (elaborations) • 75 pages • 2024
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WGU C839 OBJECTIVE ASSESSMENT FINAL 
INTRODUCTION TO CRYPTOGRAPHY EXAM 
 WITH ACTUAL CORRECT 
QUESTIONS AND VERIFIED DETAILED 
ANSWERS |FREQUENTLY TESTED 
QUESTIONS AND SOLUTIONS |ALREADY 
GRADED A+|BRAND NEW!!!|GUARANTEED 
PASS |LATEST UPDATE
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Cryptography Final Exam Study Set (2023)- Questions & Answers (Rated A+)
- Exam (elaborations) • 13 pages • 2023
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Cryptography Final Exam Study Set (2023)- Questions & Answers (Rated A+) 
Cryptography Final Exam Study Set (2023)- Questions & Answers (Rated A+) 
 
The ______________ is the message after decryption - ANSWER - plaintext 
 
What type of cipher is the Vigenere cipher? - ANSWER - polyalphabetic 
 
What is the decryption of bsujqsyodysw by use of Vigenere cipher with the key "USF?" - ANSWER - happynewyear 
 
In Vernam cipher, its pad must be used just one time. - ANSWER - true 
 
What is the enc...
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