Symmetric Encryption and Message Confidentiality

  

1 What are the essential ingredients of a symmetric cipher?
2 What are the two basic functions used in encryption algorithms?
3 How many keys are required for two people to communicate via a symmetric cipher?
4 What is the difference between a block cipher and a stream cipher?
5 What are the two general approaches to attacking a cipher?
6 Why do some block cipher modes of operation only use encryption while others use both encryption and decryption?
7 What is triple encryption?
8 Why is the middle portion of 3DES decryption rather than encryption?

Answer the above questions using the attached reference file only.

How it works

  1. Paste your instructions in the instructions box. You can also attach an instructions file
  2. Select the writer category, deadline, education level and review the instructions 
  3. Make a payment for the order to be assignment to a writer
  4.  Download the paper after the writer uploads it 

Will the writer plagiarize my essay?

You will get a plagiarism-free paper and you can get an originality report upon request.

Is this service safe?

All the personal information is confidential and we have 100% safe payment methods. We also guarantee good grades