Block Cipher Question: Let temp_block denote a Sage variable that contains the output of the first application of function fK (f_K in the Sage example code) while encrypting with Simplified DES. Using

Stuck with a difficult assignment? No time to get your paper done? Feeling confused? If you’re looking for reliable and timely help for assignments, you’ve come to the right place. We promise 100% original, plagiarism-free papers custom-written for you. Yes, we write every assignment from scratch and it’s solely custom-made for you.


Order a Similar Paper Order a Different Paper


Block Cipher

Question:

  1. Let temp_block denote a Sage variable that contains the output of the first application of function fK (f_K in the Sage example code) while encrypting with Simplified DES. Using subroutines from the example sage Code, write sage code to recover the input block passed to Simplifed DES Decrypt. Meaning reverse the first steps in Simplified DES Encrypt. You may assume that you have the first round key in a variable K1.
  2. Using subroutines from the Sage example code for Simplified DES, write a function to compute Simplified DES Decrypt.

Online: If you do not have Sage installed on your computer and just want to try some commands, use it online at –


http://sagecell.sagemath.org

Sage Online Tutorial:


https://doc.sagemath.org/html/en/tutorial/index.html


GettingStartedSage.doc


Matrix Linear Algebra Examples.doc


Programming Sage.doc

Writerbay.net

We’ve proficient writers who can handle both short and long papers, be they academic or non-academic papers, on topics ranging from soup to nuts (both literally and as the saying goes, if you know what we mean). We know how much you care about your grades and academic success. That's why we ensure the highest quality for your assignment. We're ready to help you even in the most critical situation. We're the perfect solution for all your writing needs.

Get a 15% discount on your order using the following coupon code SAVE15


Order a Similar Paper Order a Different Paper