security, Computer Engineering

Assignment Help:
We now consider the relation between passwords and key size. For this purpose
consider a cryptosystem where the user enters a key in the form of a password.
Assume a password consisting of 8 letters, where each letter is encoded by the
ASCII scheme (7 bits per character, i.e., 128 possible characters). What is the
size of the key space which can be constructed by such passwords?
What is the corresponding key length in bits?
Assume that most users use only the 26 lowercase letters from the alphabet in-
stead of the full 7 bits of the ASCII-encoding. What is the corresponding key
length in bits in this case?
At least how many characters are required for a password in order to generate a
ey length of 128 bits in case of letters consisting of
a. 7-bit characters?
b. 26 lowercase letters from the alphabet?

Related Discussions:- security

Implemented in a program developed for sorting , A student counted up the n...

A student counted up the number of statements implemented in a program developed for sorting n integers and came up with a recurrence of the form: T(n) = a * n + b + 2T(n/2), an

Which approaches not require knowledge of the system state, Which approache...

Which approaches do not require knowledge of the system state? Ans. Deadlock detection, deadlock prevention and deadlock avoidance; none of the given require knowledge of the s

Explain in detail about touch screens, Explain in detail about Touch screen...

Explain in detail about Touch screens For people who can't use a keyboard allowing input; also helps people with learning difficulties since icons are easier to understand

What are the values of the slack or surplus variables, Consider the followi...

Consider the following linear programming problem: Minimize:        70M + 40N Subject to:           3M + 7N ≥ 233                             10M + 2N ≥ 254

Pipeline, where can I find detailed explanation of 6 stage and 7 stage pipe...

where can I find detailed explanation of 6 stage and 7 stage pipeline ??

linq file extension, What is the LINQ file extension that interacts with C...

What is the LINQ file extension that interacts with Code Behinds objects? Ans) The extension of the file is .dbml

Find the conversion time & conversion rate of A/D converter, Find the conve...

Find the conversion time of a Successive Approximation A/D converter which uses a 2 MHz clock and a 5-bit binary ladder containing 8V reference. What is the Conversion Rate? An

Scope of supply chain management consultancy, What are included in scope of...

What are included in scope of Supply Chain Management Consultancy? Supply Chain Management Consultancy's scope is extensive, and classically includes as given here: a. Sales

Illustrate working of synchronous counters, Q. Illustrate working of Synchr...

Q. Illustrate working of Synchronous Counters? The main drawback of ripple counter is delay in changing the value. How? To understand this let's take a case when state of rippl

Show the decimal representation in computers, Binary number system is most ...

Binary number system is most common for computer due to two stable states of its components. However unfortunately this isn't a very natural system for us as we deal with decimal n

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd