Atbash cipher Study guides, Class notes & Summaries
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![WGU C839 - Introduction to Cryptography| 190 QUESTIONS| WITH COMPLETE SOLUTIONS.](/docpics/6447be38b91f8_2653492.jpg)
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WGU C839 - Introduction to Cryptography| 190 QUESTIONS| WITH COMPLETE SOLUTIONS.
- Exam (elaborations) • 19 pages • 2023
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WGU C839 - Introduction to Cryptography | 190 QUESTIONS | WITH COMPLETE SOLUTIONS. 
Serpent CORRECT ANSWERS: Symmetric Block Cipher 
Block Size: 128 bits 
Key Size: 128, 192, or 256 bits 
Rounds: 32 
Network: Substitution-Permutation 
Tiny Encryption Algorithm (TEA) CORRECT ANSWERS: Symmetric Block Cipher 
Block Size: 64 bits 
Key Size: 128 bits 
Cryptography CORRECT ANSWERS: Deciphering secret writings, kryptos means hidden and 
grafo means write. Must not be readable by interlopers over secure...
![WGU C839 Questions and Answers 100% Pass](/docpics/63320e295f57c_1988077.jpg)
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WGU C839 Questions and Answers 100% Pass
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WGU C839 Questions and Answers 100% Pass Symmetric Which encryption standard uses the same key to encrypt and decrypt messages? 
Skipjack Which algorithm is designated as a Type 2 product by the National Security Agency (NSA)? 
X.509 v3 What is the most commonly used format for certificates? 
Certificate revocation list (CRL) What is referenced to determine if a certificate has been revoked? 
Sender's public key What needs to be installed on end users' computers to allow them to trust applicat...
![C839 Introduction to Cryptography| WGU C839| 130 QUESTIONS| WITH COMPLETE SOLUTIONS](/docpics/63d1e933d5810_2301400.jpg)
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C839 Introduction to Cryptography| WGU C839| 130 QUESTIONS| WITH COMPLETE SOLUTIONS
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Symmetric CORRECT ANSWERS: Which encryption standard uses the same key to encrypt and decrypt messages? 
 
Skipjack CORRECT ANSWERS: Which algorithm is designated as a Type 2 product by the National Security Agency (NSA)? 
 
X.509 v3 CORRECT ANSWERS: What is the most commonly used format for certificates? 
 
Certificate revocation list (CRL) CORRECT ANSWERS: What is referenced to determine if a certificate has been revoked? 
 
Sender's public key CORRECT ANSWERS: What needs to be installed...
![Introduction to Cryptography - C839 - ECES EC-Council Certified Encryption Specialist Practice Exam (100% correct)](/docpics/639e578c71520_2187325.jpg)
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Introduction to Cryptography - C839 - ECES EC-Council Certified Encryption Specialist Practice Exam (100% correct)
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1. How did the ATBASH cipher work? correct answer By substituting each letter for the letter from the opposite end of the alphabet (i.e. Abecomes Z, B becomes Y, etc.) 
 
2. DES has a key space of what? correct answer 2^56 
 
3. Which of the following are valid key sizes for AES (choose three)? correct answer c. 128 
d. 192 
e. 256 
 
4. Which of the following algorithms uses three different keys to encrypt the plain text? correct answer 3DES 
 
Triple Data Encryption System 
 
5. Which of the f...
![EC-Council Certified Encryption Specialist v2 (ECES) - Practice Questions with Verified Answers](/docpics/3045972/64ac6e4f34de6_3045972_121_171.jpeg)
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EC-Council Certified Encryption Specialist v2 (ECES) - Practice Questions with Verified Answers
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EC-Council Certified Encryption Specialist v2 (ECES) - Practice Questions with Verified Answers 
How did the ATBASH cipher work? 
a. By shifting each letter a certain number of spaces 
b. By Multi alphabet substitution 
c. By rotating text a given number of spaces 
d. By substituting each letter for the letter from the opposite end of the alphabet (i.e. A becomes Z, B becomes Y, etc.) d. By substituting each letter for the letter from the opposite end of the alphabet (i.e. A becomes Z, B becomes...
![EC-Council Certified Encryption Specialist (ECES) (2022/2023) Already Passed](/docpics/3708452/653baa2b7b639_3708452_121_171.jpeg)
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EC-Council Certified Encryption Specialist (ECES) (2022/2023) Already Passed
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EC-Council Certified Encryption Specialist (ECES) (2022/2023) Already Passed What is cryptography? Noun - A) The process or skill of communicating in or deciphering secret writings or ciphers B) Secret writing Origin - Cryptography (or cryptology); derived from word kryptos which means "hidden", and grafo, which means "write", is the study of message secrecy Definition- Cryptography is the science of altering communication so that it cannot be understood without having the key 
Interloper a ...
![WGU Course C839 - Intro to Cryptography Quizlet by Brian MacFarlane exam questions and answers](/docpics/5377826/664bac3f27f25_5377826_121_171.jpeg)
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WGU Course C839 - Intro to Cryptography Quizlet by Brian MacFarlane exam questions and answers
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What type of encryption uses different keys to encrypt and decrypt the message? 
 
A Symmetric 
B Private key 
C Secure 
D Asymmetric 
D 
 
 
 
The most widely used asymmetric encryption algorithm is what? 
 
A RSA 
B Vigenere 
C DES 
D Caesar Cipher 
A 
 
 
 
Original, unencrypted information is referred to as ____. 
 
A text 
B plaintext 
C cleantext 
D ciphertext 
B 
 
 
 
Which of the following is NOT an asymmetric system? 
 
A PGP 
B RSA 
C SSL 
D DES 
D 
 
 
 
In order for User A to send U...
![WGU C839 - Introduction to Cryptography Real Exam With Complete Solutions](/docpics/3516245/651530ae0f9d7_3516245_121_171.jpeg)
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WGU C839 - Introduction to Cryptography Real Exam With Complete Solutions
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WGU C839 - Introduction to Cryptography 
Real Exam With Complete Solutions 
 
Symmetric Block Cipher 
Block Size: 64 bits 
Key Size: 128 bits ---------- Correct Answer -------- IDEA (International Data Encryption 
Algorithm) 
Symmetric Block Cipher 
Block Size: 64 bit blocks 
Key Size: 40 to 128 bits 
Two versions: 128 and 256 ---------- Correct Answer -------- CAST 128/256 
Symmetric Block Cipher 
Block Size: 128 bits 
Key Size: 128, 192, or 256 bits 
Rounds: 32 
Network: Substitution-Permut...
![EC-Council Certified Encryption Specialist v2 (ECES) - Practice Questions and Answers](/docpics/3067865/64b231787abfe_3067865_121_171.jpeg)
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EC-Council Certified Encryption Specialist v2 (ECES) - Practice Questions and Answers
- Exam (elaborations) • 30 pages • 2023
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EC-Council Certified Encryption Specialist v2 (ECES) - Practice Questions and AnswersEC-Council Certified Encryption Specialist v2 (ECES) - Practice Questions and AnswersEC-Council Certified Encryption Specialist v2 (ECES) - Practice Questions and AnswersEC-Council Certified Encryption Specialist v2 (ECES) - Practice Questions and Answers 
How did the ATBASH cipher work? 
 
a. By shifting each letter a certain number of spaces 
b. By Multi alphabet substitution 
c. By rotating text a given numbe...
![WGU C839 - Intro to Cryptography Exam 2022 completely Solved 100 Q&A GRADED A+](/docpics/3645139/652f97193e010_3645139_121_171.jpeg)
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WGU C839 - Intro to Cryptography Exam 2022 completely Solved 100 Q&A GRADED A+
- Exam (elaborations) • 31 pages • 2023
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WGU C839 - Intro to Cryptography Exam 2022 
completely Solved 100 Q&A GRADED A+ 
The most widely used asymmetric encryption algorithm is what? 
A RSA 
B Vigenere 
C DES 
D Caesar Cipher - Answer A 
Original, unencrypted information is referred to as ____. 
A text 
B plaintext 
C cleantext 
D ciphertext - Answer B 
Which of the following is NOT an asymmetric system? 
A PGP 
B RSA 
C SSL 
D DES - Answer D 
In order for User A to send User B an encrypted message that only User B can read, 
User A m...
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