Triple des Study guides, Class notes & Summaries

ch4 | 3DES, AES, and Modes of Operation correctly answered Multiple Encryption - correct answer the process of encrypting an already encrypted message one or more times Double DES - correct answer The simplest form of multiple encryption has two encryption stages and two keys Given the potential vulnerability of DES to a brute-force attack, what are the alternatives? - correct answer - design a new algorithm AES for example - to use multiple encryption with DES and multiple keys. dou...

Introduction to Cryptography - C839 - ECES EC-Council Certified Encryption Specialist Practice Exam Already Passed 1. How did the ATBASH cipher work? 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? 2^56 3. Which of the following are valid key sizes for AES (choose three)? c. 128 d. 192 e. 256 4. Which of the following algorithms uses three different keys to encrypt the plain text? 3DES Tripl...

Abstract correct answers A brief summary at the start of a paper summarising the content. Accelerometer correct answers A device that measures acceleration. It is commonly used in mobile phones for sensing motion. Acceptable Use Policy (AUP) correct answers A document that lays out the activities that the provider considers to be an improper or illegal use of their services. (Also see Cloud Service Agreement (CSA). Accumulator correct answers A register within a processor that is used t...

ch4 3DES, AES, and Modes of OperationMultiple Encryption - correct answer the process of encrypting an already encrypted message one or more times Double DES - correct answer The simplest form of multiple encryption has two encryption stages and two keys Given the potential vulnerability of DES to a brute-force attack, what are the alternatives? - correct answer - design a new algorithm AES for example - to use multiple encryption with DES and multiple keys. double DES strengths? - cor...

ch4 3DES, AES, and Modes of Operation Exam Questions 2024. Multiple Encryption - correct answer the process of encrypting an already encrypted message one or more times Double DES - correct answer The simplest form of multiple encryption has two encryption stages and two keys Given the potential vulnerability of DES to a brute-force attack, what are the alternatives? - correct answer - design a new algorithm AES for example - to use multiple encryption with DES and multiple keys. doub...

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...

Encapsulating Security Payload (ESP) - Answer An IPsec sub-protocol that enables encryption and authentication of the header and payload of a data packet 2FA (two-factor authentication) - Answer can be used to help protect your account from unauthorized access by requiring you to enter an additional code when you sign in. 3DES(triple data encryption standard (3DES) - Answer An encryption similar to DES but uses a key that can be three times the size at a 168-bit key. ACL(Access Co...

SSLP (2022/2023) Rated A+ *-property Pronounced "star property," this aspect of the Bell-LaPadula security model is commonly referred to as the "no-write-down" rule because it doesn't allow a user to write to a file with a lower security classification, thus preserving confidentiality. 3DES Triple DES encryption—three rounds of DES encryption used to improve security. 802.11 A family of standards that describe network protocols for wireless devices. 802.1X An IEEE standard for performi...

ECES Cryptography Algorithms keys/block size 100% Correct DES Symmetric Block Key size: 56 Block size: 64 Feistel Cipher w/ 16 rounds, 48 bit key for each round. Use of 8 S-boxes 3DES (Triple DES) Symmetric Block Key size: 56 Block size: 64 Performs DES function 3 times w/ 3 different keys. DESx Variation of DES that employs key whitening. XOR a 64 bit key with the text before the round function, after or both. Advanced Encryption Standard (AES) Symmetric Block Key size: 128, 192, or 256 Blo...

What is Defensive Programming? - ANSWER- - assume mistakes will happen and guard against them - assertions are the most common way of doing this - code checks itself as it runs - always check, validate, and sanitize data Which attribute provides a dictionary of breakpoint instances? - ANSWER- - bplist - maintains a (file, line) tuple of breakpoints Which function can be used to return all set breakpoints? - ANSWER- - get_all_breaks( ) - returns a string with all set breakpoints Whi...