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

Pruning - artificial intelligence, Pruning - artificial intelligence: ...

Pruning - artificial intelligence: Recall which pruning a search space means deciding that there certain branches to should not be explored. Moreover if an agent knows for sur

Propositional versions of resolution, Propositional versions of resolution:...

Propositional versions of resolution: Just because of so far we've only looked at propositional versions of resolution. However in first-order logic we require to also deal wi

How many chips will be required in a microprocessor , A microprocessor uses...

A microprocessor uses RAM chips of 1024 × 1 capacity. (i) How many chips will be required and how many address lines will be connected to provide capacity of 1024 bytes. (ii) How

What are transmission bridges, What are transmission bridges? A usual ...

What are transmission bridges? A usual transmission bridge is demonstrated in figure. The series capacitance and the shunt inductances of the two relays give a high-pass filte

Vector, Explain the characteristics of vector processing

Explain the characteristics of vector processing

How testmanager manage test logs, When a robot scripts runs the output make...

When a robot scripts runs the output makes a test log. Test logs are managed now is the TestManager application. Rational now permits you to classify your logs into any type of for

Explain the client- server interface using procedures, Explain the Client- ...

Explain the Client- Server Interface Using Procedures Developers must realize that client-server impose a division of labor in application programs. Programs must be broken up

Invoke on the dataadapter control, Which method do you invoke on the DataAd...

Which method do you invoke on the DataAdapter control to load  your generated dataset with data? DataAdapter.Fill(ds). The beauty of this method is it automatically implicitly

What are the authentication methods in .net, What are the authentication me...

What are the authentication methods in .NET?   1. WINDOWS AUTHENTICATION 2. FORMS AUTHENTICATION 3. PASSPORT AUTHENTICATION The authentication option for the ASP.N

Compact disk read only memory, Q. What is Compact Disk Read Only Memory? ...

Q. What is Compact Disk Read Only Memory? This technology has evolved out of entertainment electronics market where cassette tapes and long playing records are being replaced b

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