What is the key length of the Data Encryption Standard DES algorithm quizlet?
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COMPUTER SCIENCE Let S = {1, 2, 3}. Test the following binary relations on S for reflexivity, symmetry, antisymmetry, and transitivity. a. $\rho=\{(1,3),(3,3),(3,1),(2,2),(2,3),(1,1),(1,2)\}$ b. $\rho=\{(1,1),(3,3),(2,2)\}$ c. $\rho=\{(1,1),(1,2),(2,3),(3,1),(1,3)\}$ d. $\rho=\{(1,1),(1,2),(2,3),(1,3)\}$ Verified answer COMPUTER SCIENCE Verified answer
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Terms in this set (26)Chapter 3 3.3 What type of key or keys are used in symmetric cryptography? A shared private key ______________ cryptography uses a unique key pair for each participant. This key pair consists of a public key and a private key. Asymmetric How many keys are used with symmetric key cryptography? One one Which of the following is not true concerning
symmetric key cryptography? Each pair of communicating entities requires a unique shared key. Key management is easy when implemented on a large scale. Which
of the following can be classified as a "stream cipher"? RC4 Blowfish, Twofish, and AES are all _______ ciphers. block You want to encrypt data on a removable storage device. Which encryption method would you choose to use the strongest method possible? AES SHA1 is a _______algorithm, not an encryption algorithm hashing Which of the following algorithms are used in symmetric encryption? (Select three.) Blowfish
Which of the following are true of Triple DES (3DES)? (Select two.) Is used in IPSec Advanced Encryption Standard (AES) uses the_______ ___________ cipher Rijndael block
Which of the following are true concerning the Advanced Encryption Standard (AES) symmetric block cipher? (Select two.) AES uses a variablelength block and key length (128, 192, or 256bit keys). Which of the following symmetric block ciphers does not use a variable block length? International Data Encryption Algorithm (IDEA) International Data Encryption Algorithm (IDEA) Which of the following encryption mechanisms offers the least security because
of weak keys? DES (AES (128, 192, 256 bit keys), TwoFish (up to 256 bit keys), and IDEA (128 bit keys) all support stronger keys than that of DES. ) Which version of the Rivest Cipher is a block cipher that supports variable bit length keys and variable bit block sizes? RSA RC5 He
used 32 bit blocks, a 64 bit key, and he only used the selected key once. He moved the key onto a USB hard drive which was stored in a safety deposit box. Bob's notebook was stolen. Within a few days Bob discovered the contents of his encrypted file on the Internet. What is the primary reason why Bob's file was opened so quickly? Weak key You are concerned about the strength of your cryptographic keys, so you implement a system that does the following: The initial key is fed into the input of the bcrypt utility on a Linux workstation. The bcrypt utility produces an enhanced key that is 128 bits long. Key stretching Which of the following is considered an outofband distribution method for privatekey encryption? Copying the key to a USB drive Copying the key to a USB drive _________ distribution involves manually distributing the key, such as copying the key to a USB drive and sending it to the other party. Outofband _______ distribution can use a key distribution algorithm, such as DiffieHellman, to send the key to the recipient. It can also use asymmetric encryption technology to encrypt the key for distribution. In-band
Match the symmetric key distribution mechanism on the left with the appropriate description on the right. Each distribution mechanism may be used once, more than once, or not at all. The sender's key is sent to a recipient using a DiffieHellman key exchange. The sender's key is copied to a USB drive and handed to the recipient. The sender's key is sent to the recipient using publickey cryptography. The sender's key is burned to a CD and handed to the recipient. Inband distribution some of the more commonly used hashing algorithms include SHA-1, MD5 and RIPEMD usually the-_____bit version 160 Symmetric encryption is well suited for_______encryption of less sensitive data because it is less CPU-intensive than other encryption methods. bulk common symmetric cyptography methods include- block rc 2, rc5 idea des 3des aes blowfish twofish _______________________embeds a symmetric key into a message before the message is hashed. When the message is received, the recipient's symmetric key is added back into the message before hashing the message. Keyed-hash Message Authentication Code (HMAC) Recommended textbook solutionsComputer Organization and Design MIPS Edition: The Hardware/Software Interface5th EditionDavid A. Patterson, John L. Hennessy 220 solutions
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Computer Organization and Design MIPS Edition: The Hardware/Software Interface5th EditionDavid A. Patterson, John L. Hennessy 220 solutions Sets with similar terms3.315 terms ashmulamula Symmetric Encryption23 terms jmo93 Cryptology84 terms tmh0016 Chapter 2 Security +101 terms homolatheresa Sets found in the same folderChapter 8 Host Defense19 terms ekreigh Chapter 9 Application Defense15 terms ekreigh CS 3883 Final20 terms ekreigh Chapter 1047 terms ekreigh Other sets by this creatorCS 3883 Final Study Set398 terms ekreigh Chapter 732 terms ekreigh Chapter 698 terms ekreigh 2.84 terms ekreigh Other Quizlet setsBiochem Chapter 8 Lipids53 terms Chris_Studys_alot Marketing Final Exam Jeopardy30 terms Mark_Beatty9 SS quiz19 terms Noah_Raisman Pyschology Final119 terms epere2 Related questionsQUESTION True or False: The Site Search report allows you to see secondary search terms that visitors entered after an initial internal site search. 3 answers QUESTION What is the Period of validity in X.509 Certificate format? 2 answers QUESTION Separation of duties is the application of separation of privilege to the people side of the security function. For this, more than one individual needs to be involved. What is the correct observation on separations of duty? 4 answers QUESTION This process is done by having each block of plaintext is XORed with the previous ciphertext block before being encrypted. 5 answers What is the key length of the Data Encryption Standard DES algorithm?DES is a block cipher that operates on data blocks of 64 bits in size. DES uses a 64-bit key 8 × 8 including 1 bit for parity, so the actual key is 56 bits.
What block size is used by the 3DES encryption algorithm quizlet?What is the block size used by the 3DES encryption algorithm? 64 bits. 3DES simply repeats the use of the DES algorithm three times.
What is the Advanced Encryption Standard AES encryption algorithm's largest key length size quizlet?AES uses 8'128 bit keys in steps of 8 bits. AES uses a variablelength block and key length (128, 192, or 256bit keys).
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