For the SHA-512 algorithm that has theinput original message size is 8600 bits,determine how many times each functionwill be used: majority, conditional androtate functions, that will be used to obtainthe final result of the final hash value? Andwhy the SHA-512 uses addition modulo264?

Step by step processing a 8600-bit message with SHA-512 Part 1:Step 1. Padding the MessageOriginal…

Answered: For the SHA-512 algorithm that has the…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Exercise 1 Consider a hash table of size 13, and assume open addressing with linear probing Show what the hash table will look like after the following items are added in the order shown. 26 54 77 90 27 30 28 52 96 65 What’s the load factor of the hash table after the values above are added? If any of the values cause a collision, indicate which. How many comparisons are needed to find 65 in the table? Briefly explain. How many comparisons are needed to determine that 104 is not in the table? Briefly explain. What’s the hash value computed for the string “dog”? Show your work. Exercise 2 Suppose chaining is used as the method for collision resolution. Part A Show what the hash table will look like after the following items are added in the order shown. 26 54 77 90 27 30 28 52 96 65 How many comparisons are needed to find 65 in the table? How many comparisons are needed to determine that 104 is not in the…
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Consider a hash table with open addressing with 11 slots. Using the hash function h(x) = x mod 11, insert the keys (52,44,56,61,64) into the table in the same order. Assume that keys 0,1,8,9 already in the table .Use Linear probing and Quadratic probing for collision resolution Show the results in the two separate tables
Please answer question 1 - 5 with quadratic probing instead of linear probing. Suppose an initially empty hash table of size 11 uses the hash function h(x) = x mod 11 to calculate the address. Suppose linear probing is used to resolve collisions. 1. Which location is 19 inserted into? 2. Which location is 21 inserted into 3. Which location is 41 inserted into 4. Which location is 31 inserted into 5. Which location is 32 inserted into
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Suppose that 50 keys are to be inserted into an initially empty hash table using quadratic probing. What should be the size of the hash table to guarantee that all the collisions are resolved?
I am using a proof of work protocol with a 8-bit hash function. In other words, the digest is always 8-bits. The difficulty I have set for this proof of work protocol is 6. In binary, which of the following hash digests would satisfy this proof of work protocol? In other words, as you are searching for a response string, what would be an example of a hash output that would make you stop? 11111010 01000101 11000000 00000011 11111100 01111111 10101001
Suppose you have a closed hash table with 500 slots, and there are currently 400 records in the hash table. Approximately how many memory accesses, on average, would you expect upon inserting the next record into the table, assuming a "good" (near optimal) hash function and probe function? (Answer with a single number, rounded to the nearest integer.)
For hash functions, to avoid attacks based on the birthday paradox, it is required to have large number of output bits. Why are shorter length outputs used in MAC?
What is the total number of linked lists included in an interleaving routing table of dimension T? Which kind of primitive data structure is used in the Separate Recursive hash table?
How many collisions would you expect to find in the following cases? a. Your hash function generates a 12-bit output and you hash 1024 randomly selected messages. b. Your hash function generates an n-bit output and you hash m randomly selected messages.
How does a hash table work, and what is its time complexity for search, insert, and delete operations?

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For the SHA-512 algorithm that has the input original message size is 8600 bits, determine how many times each function will be used: majority, conditional and rotate functions, that will be used to obtain the final result of the final hash value? And why the SHA-512 uses addition modulo 264?