Computer Science

Derive the bit representation for the following round constants within the key schedule:

RC[8]     RC[9]     RC[10]

Don't use plagiarized sources. Get Your Custom Essay on
Computer Science
Just from $13/Page
Order Essay

The minimum key length for the AES algorithm is 128 bit. Assume that a special-purpose hardware key-search machine can test one key in 10 ns on one processor. The processors can be parallelized. Assume further that one such processor costs $10, including overhead. (Note that both the processor speed and the prize are rather optimistic assumptions.) We assume also that Moore’s Law holds, according to which processor performance doubles every 18 months.

How long do we have to wait until an AES key search machine can be built which breaks the algorithm on average in one week and which doesn’t cost more than $1 million?

The MixColumn transformation of AES consists of a matrix–vector multiplication in the field GF(2^8) with P(x) = x^8 +x^4 +x^3 +x+1. Let b = (b7x^7 +…+b0) be one of the (four) input bytes to the vector–matrix multiplication. Each input byte is multiplied with the constants 01, 02 and 03. Your task is to provide exact equations for computing those three constant multiplications. We denote the result by d = (d7x^7 +…+d0).


1. Equations for computing the 8 bits of d = 01 · b.

2. Equations for computing the 8 bits of d = 02 · b.

3. Equations for computing the 8 bits of d = 03 · b.

Note: The AES specification uses “01” to represent the polynomial 1, “02” to represent the polynomial x, and “03” to represent x+1.

The Quizlet
Calculate your paper price
Pages (550 words)
Approximate price: -

Why Us

Exemplary Academic Writing Service

At, you are guaranteed of quality service from our professional writers. We maintain consistent communication with customers after placing an order to avoid missing anything that may compromise the quality of delivered work.

Top Writers

Our hiring process is rigorous to maintain the desired quality that has become the core of our business. We expose potential writers to an uncompromising selection process that enables TheQuizlet to pick the best out of the rest. TheQuizlet boasts of a competent team of writers, editors, and professors who work towards accomplishing your goals.

Plagiarism-Free Papers

TheQuizlet has an in-house plagiarism software that lowers the probability of delivering plagiarized papers to our clients. Referencing is guided by the format specified by a customer when placing an order. Our writers are conversant with all referencing formats that include APA, MLA, Chicago, Harvard, and Vancouver among others.

24/7 Customer Support

We understand the importance of effective communication and as such, TheQuizlet has a dedicated customer support department that responds to all client needs. You can easily contact our team through a chat window at the bottom left corner. Additionally, clients can reach us through support’s email or a telephone number available on our contact page. Feel free to contact us at any time and our team of experts will solve all your problems.

Swift Delivery and 100% Money-back Guarantee

When placing an order, ensure that you specify the correct deadline to help our writers work around the provided timeline. At TheQuizlet, we deliver our tasks before the projected deadline to give time for the customer to proofread the work before submission. In the event we cannot deliver a paper on time, we initiate contact with the client to renegotiate a new deadline.

Unlimited and Free Revisions

We urge all our customers to request for a revision whenever they identify a need to amend the paper. Since we understand your concerns, does not charge for revisions. Nonetheless, we encourage customers to be genuine when requesting for revisions.

Try it now!

Calculate the price of your order

Total price:

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

TheQuizlet is a one-stop shop for all your writing needs. We tackle each customer’s needs differently to improve the quality of outcomes and meet your expectations.


Academic Help Service

TheQuizlet is committed to delivering quality work on time to ensure our clients get the value for their money.


Admission Essays and Professional Writing

Admission essays are personal, as opposed to other papers. For this reason, our team will request for any information that will enable them to deliver quality work, which allows you to convince the admissions board on why you should be granted the application.


Editing and Proofreading

Our team comprises of qualified researchers, writers, and editors who go through the different papers before delivering them to our clients. Whether your paper is being written from scratch or you want it to be edited, you can trust TheQuizlet for all your needs.


Revision Support

After receiving the final draft, you can request for a revision to incorporate various changes that are aligned with your expectations. All our papers are written in line with the latest writing standards.