Symmetric algorithms - Study guides, Class notes & Summaries

WGU C839 Objective Assessment Study Guide (Latest 2024/ 2025 Update) Introduction to Cryptography| Qs & As| Grade A| 100% Correct (Verified Answers) Q: Information Theory Answer: -Published by Claude Shannon in 1949 in the Bell System Technical Journal - Important concepts: -Diffusion -Confusion -Avalanche Effect (Horst Feist's variation on Shannon's concept of diffusion Q: Kerckhoff's Principle Answer: -1883 -A crptosystem should be secure even if all its elemen...

SYMMETRIC AND ASYMMETRIC ENCRYPTION ALGORITHMS TEST QUESTIONS AND ANSWERS...

MATH 5111 Final Exam Questions and Answers- Northeastern University Question 1 10 out of 10 points A strength of asymmetric algorithms when compared to symmetric algorithms is key management (sharing keys with others while maintaining secrecy). Selected Answer: True Answers: True False  Question 2 10 out of 10 points A strength of symmetric algorithms is that they have multiple modes. Selected Answer: True Answers: True False  Question 3 10 out of 10 points A weakness of sy...

WGU C839V5/D334 ADDITIONAL PRACTICE QUESTIONS AND ANSWERS VERIFIED 100% The hash value in bits for MD5 is ____. A. 128 B. 160 C. 256 Ans- 128 Hashing involves taking a _____ length input and producing a _____ length output (message digest). A. fixed; fixed B. variable; fixed C. fixed; variable Ans- variable; fixed The hash value in bits for SHA-1 is ____. A. 128 B. 160 C. 256 Ans- 160 The hash value in bits for MD4 is ____. A. 128 B. 160 C. 256 Ans- 128 ...

CYBR 7400 Midterm Exam Questions with Answers Security attacks are classified as either passive or aggressive - Answer-False - passive or active Authentication protocols and encryption algorithms are examples of security mechanisms - Answer-True Symmetric encryption is used to conceal the contents of blocks or streams of data of any size, including messages, files, encryption keys, and passwords - Answer-True The data integrity service inserts bits into gaps in a data stream to frustra...

CEH v10 Questions with Correct Answers Which of the following information is collected using enumeration? A: Network resources, network shares, and machine names. B: Open ports and services. C: Email Recipient's system IP address and geolocation. D: Operating systems, location of web servers, users and passwords. - Answer-A: Network resources, network shares, and machine names. Which of the following protocols uses TCP or UDP as its transport protocol over port 389? A: LDAP ...

What type of encryption uses different keys to encrypt and decrypt the message? +Secure +Asymmetric +Private key +Symmetric Answer - Asymmetric Asymmetric cryptography, also known as public key cryptography, uses public and private keys to encrypt and decrypt data. The most widely used asymmetric encryption algorithm is what? +Caesar Cipher +Vigenere +RSA +DES Answer - RSA The RSA encryption algorithm is one of the most widely used public key encryption algorithms that have ...

WGU C839- test Questions and Answers Already Passed What is the block and key size for Blowfish - 64 bit block - 32-448 bit key What term from the list below best describes a data concealment for covert communication that makes use of LSB replacement? Steganography What term from the list below best describes a data concealment for covert communication that makes use of LSB replacement? Steganography Which block cipher below uses a block size of 128 bits and key sizes up to 256 bits? TwoFish ...

What is the block and key size for Blowfish - Answer - 64 bit block - 32-448 bit key What term from the list below best describes a data concealment for covert communication that makes use of LSB replacement? - Answer Steganography What term from the list below best describes a data concealment for covert communication that makes use of LSB replacement? - Answer Steganography Which block cipher below uses a block size of 128 bits and key sizes up to 256 bits? - Answer TwoFi...

WGU C839 INTRO TO CRYPTOGRAPHY TEST QUESTIONS AND CORRECT ANSWERS What type of encryption uses different keys to encrypt and decrypt the message? A Symmetric B Private key C Secure D Asymmetric - Answer D 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? ...