Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Block ciphers are less common in symmetric encryption algorithms
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False
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- Public-key encryption, which uses a cryptographic algorithm to generate one symmetric key from another one, and uses those two mathematically related symmetric keys, is also known as [answer] cryptographyarrow_forwardPublic key cryptosystems are: (more than one may be true, choose all that are true) a offering a simpler way for key distribution B faster than symmetric C the preferred solution when the message we want to encrypt is very large D easily used to offer integrity E requiring advanced hardware in order to use them F easily used to offer confidentiality G marketed better than symmetric that is why people prefer them H using one key for encryption and a different key for decryptionarrow_forwardtrue or false 11. One property of encryption algorithm is that someone can know the details of the algorithm and still not be able to decipher the encrypted message without knowing the key that the algorithm used to encrypt the message.arrow_forward
- True or False 9. An example of a lightweight cryptographic block cipher is the Scalable Encryption Algorithm.arrow_forwardCryptography problem mathematics Suppose Alice and Bob are using a cryptosystem with a 128-bit key, so there are 2128possible keys. Eve is trying a brute-force attack on the system.(a) Suppose it takes 1 day for Eve to try 264 possible keys. At this rate, how long willit take for Eve to try all 2128 keys? (b) Suppose Alice waits 10 years and then buys a computer that is 100 times fasterthan the one she now owns. Will she finish trying all 2128 keys before or after whatshe does in part (a)?arrow_forwardQ# Pigpen cipher is less secure than a vigenere cipher. T or farrow_forward
- How does a block cipher differ from a stream cipher?arrow_forwardA block cipher with a random key is most like a Choose one: Private random function Public random permutation Private random permutation Public random functionarrow_forwardUnderstanding the differences between encoding and encryption is key.arrow_forward
- Please describe the techniques of Substitution Cipher and Transposition Cipher.arrow_forwardSeveral symmetric and asymmetric ciphering techniques are used throughout the public key cryptography process.arrow_forwardPublic key is 35,17) please no computer answers I neeed to see and understand how it is donearrow_forward
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