Symmetric key encryption - Study guides, Class notes & Summaries

Cryptography provides 5 basic protections, what are they? Confidentiality Integrity Availability Authentication Non-repudiation What are some Symmetric key disadvantages. Key management depends on all users to keep key secret Not easily scalable to large groups Symmetric key advantages. (List 2) Symmetric key algorithms are very fast High security especially with large key sizes Name 2 encryption methods. Block Cipher Stream Cipher _____ cipher encry...

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 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? ...

2.1 Suppose someone suggests the following way to confirm that the two of you are both in possession of the same secret key. You create a random bit string the length of the key, XOR it with the key, and send the result over the channel. Your partner XORs the incoming block with the key (which should be the same as your key) and sends it back. You check, and if what you receive is your original random string, you have verified that your partner has the same secret key, yet neither of y...

Cryptography and Network Security Principles and Practice 8th Edition, William Stallings (SOLUTION MANUAL, 2024), All Chapters 1-20 Covered, Latest Guide A+. TABLE OF CONTENTS Chapter 1: Introduction..............................................................................................5 Chapter 2: Classical Encryption Techniques ............................................................7 Chapter 3: Block Ciphers and the Date Encryption Standard .............................. 13 Cha...

CISSP Domain 3 Questions with complete solution 2024 Key clustering - correct answer different encryption keys generate the same ciphertext from the same plaintext message Synchronous - correct answer encryption or decryption request is performed immediately Asynchronous - correct answer Encrypt/Decrypt requests are processed in queues Hash function - correct answer a one-way mathematical operation that reduces a message or data file into a smaller fixed length output, or ha...

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...

Certified Encryption Specialist Practice Questions and Answers Latest 2024/2025 | 100% Correct. 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 ever been invented. It was created by the three scientists Ronald Rivest, Adi Shamir, and Leonard Adleman in 1977, and today it is increasingly being used in the network area. Origin...

CEH V11 Cheat Sheet 1 with Revised Answers Regional Registry Coverage Map - Answer-North America - ARIn South America - Lacnic Europe - Ripe Africa - AFRINIC Asia - APNIC Symmetric Encryption - Answer-Type of cryptography. secret-key, shared-key-private key.) uses same key for encryption and decryption. DES - Answer-Symmetric Algo. Data Encryption Standard - the archetypal block cipher. Designed to encipher and decipher blocks of data consisting of 64 bits under control of a 56bit key...

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? A PGP