ers (p, q, g) = (22531, 751, 4488). She chooses the se
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Samantha uses DSA with public parameters (p, q, g) = (22531, 751, 4488). She chooses the secret signing key a = 674.
(b) Samantha signs the document D = 244 using the random element k = 574. What is the signature?
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- What is the “longest possible token ”rule?Bob offered Alice an X amount of money to complete a job. A hash value of the offer was calculate, the offer was digitally signed by Bob and sent to Alice. At pay time, Alice presented a request for the payment of $100, but Bod claimed that the offer was for $50. He presented a copy of the offer with a hashed value that confirms the $50, but Alice presented a different hash value that shows a $100 pay. How would you determine if Bob changed the offer and calculated a matching hash value or Alice change the offer, and calculated a matching hash value?Consider your ID number as a string of digits and calculate the Shanon’s Entropy of the string. [Hint: If your ID string is “201001011003”, then P(0)=1/2, P(1)=1/6, P(2)=1/12, P(3)=1/4].
- The hash code for Strings can be calculated once, at the time the String is created, which could potentially reduce its complexity.The precomputed value would be returned by subsequent calls to hashCode. This has the potential to be promising because a String's value never changes. How would you rate the effectiveness of such a procedure?Ma1. Please give only typed answer.Principles of Information Security Q : Bob offered Alice an X amount of money to complete a job. A hash value of the offer was calculate, the offer was digitally signed by Bob and sent to Alice. At pay time, Alice presented a request for the payment of $100, but Bod claimed that the offer was for $50. He presented a copy of the offer with a hashed value that confirms the $50, but Alice presented a different hash value that shows a $100 pay. How would you determine if Bob changed the offer and calculated a matching hash value or Alice change the offer, and calculated a matching hash value?
- you're storing information about the users of a web-based application, which is to say that each user has a username that is a string of uppercase letters, lowercase letters, and digits. let's imagine that the most common operations are to add a new user to the application and to check whether a user already exists (given a username). A hash table would be an appropriate way to solve this problem because you know that a well-chosen hash function can lead to something akin to Θ(1) lookups and amortized Θ(1) insertions - suppose that you've chosen a hash function that sums the character codes associated with the characters in the username. Is the chosen hash function a good hash function?Implement the knapsack public-key cryptosystem using the C or Python programming language. Then, suppose that Bob's knapsack private key consists of (3, 5, 10, 23) along with the multiplier m' = 6 and the modulus n = 47. a. Find the plaintext given the ciphertext C = 20. Give your answer in binary. b. Find the plaintext given the ciphertext C = 29. Give your answer in binary. c. Find m and the public key.Q2. RSA Alice starts the RSA, with key generation. She selects p-19 but she is confused with the second choice. Should she choose 17 or 21 for q? Q2.1 The correct choice is q= Then, she calculates the parameters n and (n). Q2.2 The value of n is n= Q2.3 The value of (n) is (n) = Now, Alice has to choose a proper value for e. For some reason, she has to choose one of the following two candidate values: 11 or 15 Q2.4 The correct choice is e= Explain:
- Does anyone know a way that I can create a function in javascript that uses a hashmap to take values which are from a table, in my case itemID which is the name of the item and stockNum which is the total amount of that item, and then returns that specified ID when the stockNum goes lower than 10 for example. Any help would be appreciated.Write a PL/SQL program with an IMPLICIT cursor that goes through the table KUCERA and measures the length of each word. Then it should insert every word into the correct table. So a word of length 3 letters, such as SHE would go into the table THREEL. All words with more than 5 letters go into the table MORETHANFIVEL.Draw an NFA that accepts words from the alphabet {0,1} where the last character is not repeated anywhere else in the word. (example: words 0, 1, 00001, 111110, ε are in the language of this NFA, while words 010, 111, 0010, 101 are not) and Convert your NFA into a DFA. Identify if this DFA is (already) minimized. If it is not, minimize it. Hint: Use the "table filling method" for minimizing your DFA (if needed).