The hacker group Desdeia tries to break our old weak cipher which we used for the communication with the Duchess of Ligovia. It'sgenerally known that an actual breaking of the cipher needs the reviewing a huge amount of variants which probably lasts a couple ofmonths. Additionally we know that the reviewing of different variants needs always the same server resource.Using our intelligence sources we tried to get some information about the actual progress of breaking, but we got only some fragments:• The hacker group Desdeia uses for breaking their powerful four-core server which resources are fully dedicated to breaking process.. The actual breaking process began exactly at noon, but we don't know, on which day.. By the noon of 2nd of April, already 648,467,673 variants were successfully reviewed.Exactly at this noon, when the breaking process was already lasted for 19 days, it was attempted to double the server speed. Thedoubling itself was failed, but instead of it there was actually succeeded to increase the server speed by 73.40%. Additionally we knowthat 14.397% of total variants are already reviewed until this moment... At noon of 19th of May, when already 55.13% of total variants were reviewed, one server core (from a total of four) went suddenly out oforder. Consequently, the further breaking process (since the noon of May 19th) was continued only with three cores which caused theactual speed lowering (new speed is 75% in comparison with the previous).Task:Find the exact date and time when Desdeia server will finish the breaking process (assuming that there will be no more server speedchanges beside the above-mentioned two occasions). Describe your solution process.

Introduction: The task given was to determine the exact date and time when the hacker group…

Find the exact date and time when Desdeia server will finish the breaking process (assuming that there will be no more server speed changes beside the above-mentioned two occasions). Describe your solution process.

Find the exact date and time when Desdeia server will finish the breaking process (assuming that there will be no more server speed changes beside the above-mentioned two occasions). Describe your solution process.

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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Attacks on a cipher that use letter frequency can be made more difficult by assigning multiple codes to the most frequently used letters in the alphabet. Such a cipher is called a homophonic cipher. Explain why multiple codes cause no increase in the time to decipher a message if the key is known.
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