Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
We now consider the relation between passwords and key size. For this purpose we consider a cryptosystem where the user enters a key in the form of a password.
1. 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?
2. What is the corresponding key length in bits?
3. Assume that most users use only the 26 lowercase letters from the alphabet instead of the full 7 bits of the ASCII-encoding. What is the corresponding key length in bits in this case?
4. At least how many characters are required for a password in order to generate a key length of 128 bits in case of letters consisting of a. 7-bit characters?
b. 26 lowercase letters from the alphabet?
Suppose demand is given by Qxd = 25 - 5Px + 2Py + Ax, where Px = $10, Py = $5, and Ax = $100. What is the advertising elasticity of demand for good x?
1. Why are financial audits more publicized than security audits? Should it be the other way around? 2. Discuss how the expertise of the practitioners and researchers (computer scientists, engineers, mathematicians) may affect IS integration.
Create a set of use cases for a university library borrowing system. (Do not worry about catalogue searching, etc.) The system will record the books owned by the library and will record who has borrowed what books.
What are the seven message types in SNMP?
Most programming languages have a built-in integer data type. Normally this representation has a fixed size, thus placing a limit on how large a value can be stored in an integer variable.
Figure P7.54 provides steady-state operating data for a well-insulated device with air entering at one location and exiting at another with a mass flow rate of 10 kg/s. Assuming ideal gas behavior and negligible potential energy effects,
Create an ERD that shows the entities, attributes, relationships, cardinality and optionality that describe the booking of a room by a guest. This ERD is to be labelled ERD 1.
Explain the use of virtual private networks (VPNs) and their security benefits and drawbacks.
As we have seen in this chapter, public-key cryptography can be used for encryption and key exchange. Furthermore, it has some properties (such as nonrepudiation) which are not offered by secret key cryptography. So why do we still use symmetric c..
Has the management reserve been revised, and if so, by how much?
What is the range of addresses in the classes of internet addresses?
Design a combinational circuit that accepts a 3-bit number and generates a 6-bit binary number equal to the square of the number. Thanks!
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd