Question: Let Block be a block cipher consisting of two rounds of a Feistel cipher having block length 8 with the session keys k1 and k2

Let Block be a block cipher consisting of two rounds of a Feistel cipher having block length 8 with the session keys k1 and k2 such that k=k1||k2 be the secret key. Suppose the complex function F used in the Feistel cypher is simple AND with the session key. That is F (m, k) = m AND k for input string m and session key k. Find the ciphertext Block (m, k) where the message m =10100101 and the secret key k= 11001010.

Subject:Cryptography and network security

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Let Block be a block cipher consisting of two rounds of a Feistel cipher having block length 8 with the session keys k1 and k2 such that k=k1||k2 be the secret key. Suppose the complex function F...

Let Block be a block cipher consisting of two rounds of a Feistel cipher having block length 8 with the session keys k 1 and k 2 such that k = k 1 | | k 2 be the secret key. Suppose the complex...

1 . Let Block be a block cipher consisting of two rounds of a Feistel cipher having block length 8 with the session keys k 1 and k 2 such that k = k 1 | | k 2 be the secret key. Suppose the complex...

MD 5 x 3 with = = = = = MD 5 x 3 is a block cipher that has a 3 - round Feistel structure and its round function is based on the MD 5 hash function. The block size of MD 5 x 3 is 3 2 bytes and its...

This question illustrates an attack on two-key triple encryption. Let F be a block cipher with n-bit block length and key length, and set F'_k_1, k_2 (x) = F_k_1 (F^-1_k_2 (F_k_1 (x))). (a) Assume...

Question 1 Suppose we define an encryption scheme as follows. The key will be four elements k 1, k 2, k 3, and k 4 in Z26. The message space will be sequences of elements of Z26 of length 6. The...

this is network security assignment 29891 13620 13620 2653495094 786 23958 23958 2653905670 27809 25326 25326 2653924248 22573 26797 26797 2653951041 15464 28601 28601 2653717360 20398 29127 29127...

Use Python 2.7 In this programming task, you will implement a TCP client-server program in Python. Your client will send an encrypted message to the server and the server should display the decrypted...

Q1: Q2: Fill up the blank in the below figure with the answers that explain the process of keying using Diffie-Hellman Key Agreement? Extract the public keys (PKs) and secret keys (SKs) . Consider...

Suppose you are the head of communication for Ashar Alo (an NGO). You have a new project which aims to work for creating awareness and solving problems regarding Menstruation among young girls in...

CQ2.1 Parent-subsidiary relationship Is there a parent-subsidiary relationship in each of the situations below? If the situation is ambiguous, identify the factors that will determine if a...

The two PRIMARY determinants of the PRRSUASMENESS of audit evidence are: Trofependence and effectivenets. relevance and rellshality. approwiatenest maf tufficiency relevance and mufficiency.

Question 17 1 pts According to the Bureau of Labor Statistics, the average weekly pay for a U.S. production worker was $441.84 in 1998 (The World Almanac, 2000). Assume that the available data...

What magazine and ads did you choose to examine?

2. Have you developed your thesis statement as a proposition of fact, value, or policy?

4. Have you worked to ensure that your speechand your deliverywill help the audience to engage in central processing?