Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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How the inverse of matrix is obtained and how it is used in cryptography
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- dont dont dont post copied one sure strict report skip if dont knowarrow_forwardA cryptanalyst has determined that the three most common trigraphs in a ciphertext are LME, WRI, and ZYC, and guesses that these ciphertext trigraphs correspond to the three most common trigraphs in English text, THE, AND, and THA. If the plaintext was encrypted using a Hill trigraphic cipher described by C ≡ AP (mod 26), what are the entries of the 3 × 3 encrypting matrix A?arrow_forwardA password system uses exact 8-character of alphanumeric. To be a secure password system, any password cannot contain the following keywords: (a) All numbers. I.e., must contain at least one letter in the password. (b)User's name. What is the probability of an adversary guessing John Hank's password correctly?arrow_forward
- A.Given p=25, q=9, and e=7, generate the public key (n,e) and the private key (n,d) using the RSA Key generation algorithm. (Use Excel for computations) b. Given Bob's public key of (85, 7) and private key of (85, 55), show how Alice can encrypt m=3 to send to Bob. Show the ciphertext. c. Given Bob's public key of (85, 7) and private key of (85, 55), show how Bob can decrypt the ciphertext y=2 received from Alice. Show the plaintext. d. Using the fast exponentiation method, determine 530 mod 47. Show your work.arrow_forwardConsider a message M which is to be encrypted with RSA algorithm.Describe the steps in the encryption and decryption algorithms, including an explanation of the symbols and terms used paying particular attention to the keys employed in encryption and decryption and the size of the message?arrow_forwardMessages are to be encoded using the RSA method, and the primes chosen are p “ 17 and q “ 19, so that n “ pq “ 323, and e “ 19. Thus, the public key is p323, 19q. (a) Show that the decryption exponent d (your private key) is 91.arrow_forward
- HELP WITH CRYPTOGRAPHYarrow_forwardSolvearrow_forwardA.Given p=25, q=9, and e=7, generate the public key (n,e) and the private key (n,d) using the RSA Key generation algorithm. (Use Excel for computations) b. Given Bob's public key of (85, 7) and private key of (85, 55), show how Alice can encrypt m=3 to send to Bob. Show the ciphertext. c. Given Bob's public key of (85, 7) and private key of (85, 55), show how Bob can decrypt the ciphertext y=2 received from Alice. Show the plaintext. d. Using the fast exponentiation method, determine 530 mod 47. Show your work.arrow_forward
- Perform Encryption and decryption using the RSA algorithm for the following: a. p=5; q = 11; e = 3; M = 12 b. p= 3; q = 17; e = 7; M = 2 c. p=7; q = 19; e = 11; M = 5 d. p= 7; q = 13; e = 11; M = 8 e. p= 13; q = 23; e = 5; M = 10arrow_forwardAlgebraic Cryptography] How do you solve this?arrow_forwardDecrypt Encryption and decryption are mathematical inverses using the Caesar/Rail Fence Cipher Hint: This a split key - one part of the key is used for the Caesar and the other part of the key is used for the Rail Fence. The full key (Caesar and Rail Fence], in hexidecimal, is: 0x7F.arrow_forward
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