Find the cipher text using RSA algorithm for the following information: [10] Public key: {e, n} = {11, 221} Private key: {d, n} = {35, 221} Plain text: 8 Decrypt the calculated cipher text using the above key and verify that the plaintext was 8. Write down complete calculation procedures Subject:Cryptography and Data Security

Q: Assume the Public Key E=11 and N=35, encrypt the letter ‘F’ using RSA and write down the…

A: We have got the ciphertext as 'F' after encrypting the letter 'F' with public key (E = 11) and N =…

Q: In shared secret key cryptography, how many keys must be generated?

A: Shared secret key cryptography, or symmetric-key cryptography, employs the identical key for message…

Q: Answer the following question: What is the average block size when using a block cipher?

A: Ans: The average block size when using a block cipher is 64 bit or 128 bit block size is the fine…

Q: 4- In a Hill cipher, find decryption key if the encryption key: k- 3

A: Decryption key=(k inverse)mod 26

Q: Using Columnar transposition encrypt the message “I HAVE LEARNED ABOUT DATA PROTECTION ", using key…

A: This question comes from Cryptography which is a paper of Computer Science. Let's discuss it in the…

Q: Decrypt the following plaintext "LNZM" using Atbash cipher. You have to generate the Atbash…

A: Atbash cipher is a substitution cipher with just one specific key where all the letters are reversed…

Q: Find the decryption key for the affine cipher with n=26, a=5 and b=8. Encrypt the message with the…

A: The Answer is

Q: Task 1: Explain how prime numbers are important by evaluating an example based on the RSA algorithm.…

A: - We need to work on the RSA algorithm here to explain why prime numbers are important in this.

Q: ne type of cryptographic algorithm is a one-way hash algorithm. Explain it and its characteristics…

A: Lets see the solution.

Q: Using Shift Cipher with Key = 4, encrypt the plaintext CONFIDENTIALITY IS ASSURED

A: 1. Turn each letter in the message M into a number, beginning at 0, that corresponds to the letter's…

Q: Encrypt the message M="GEORGE" using Caesar Lipher given

A: Coded using Python.

Q: Decrypt the following ciphertext using Hill Cipher where the key is given. 2 a) Ciphertext =…

A: Given Data : Cipher Text = "vegxfl" Key = CFJZ

Q: Encrypt using a shift cipher with the key K=4: MYLASTFAREWELL

A: Your question is about shift cipher encryption which given below :

Q: How many keys are needed to use cryptography with a shared secret key?

A: Introduction: In symmetric cryptography, a secret key (sometimes known as a "private key") is a…

Q: U.S. government agency NSA created the SHA1 hashing algorithm for use in cryptography. Why should…

A: Hashing? Hashing changes a given value into another. It uses an algorithm-based hash function. Hash…

Q: Bob's RSA public key is N=689 and e=23. You have intercepted the ciphertext z=3. Decrypt it. Select…

A: The RSA (Rivest–Shamir–Adleman) algorithm, a cornerstone of modern cryptography, relies on the use…

Q: Encrypt and decrypt the plaintext C using the Vernam one-time pad cipher for the key value 23.

A: Vernam One-time pad: The one-time pad is a random sequence of characters used as a key for…

Q: e term 'keyspace'. Briefly explain what this term means, and how it affects the strength of…

A: In cryptography we often use the term 'key space'. Briefly explain what this term means, and how it…

Q: RSA Using python script: Attacker obtains Q(n) = 15000 and knows public key is (en) = (19,15251). He…

A: Given, n=p*q=15251 ϕ(n)=(p-1)*(q-1)=15000 ⇒pq-p-q+1=15000 ⇒15251-p-q+1=15000 ⇒p+q=252…

Q: odern and a trad

A: Solution - In the given question, we have to find the differences between modern and traditional…

Q: Explain the concept of "fully homomorphic encryption" and its role in privacy-preserving computation…

A: In cryptography encryption is the process of converting plain (unencrypted) data into a secure,…

Q: Encipher the following plaintext using the Caesar cipher and key = 5: “meet me at the park”

A: The Caesar cipher is a  substitution cipher where each letter in the plaintext is moved a specific…

Q: Rainbow tables contains precomputed hashed passwords that allow an attacker to quickly locate the…

A: We have to state that the following given statement is true or false. Rainbow tables contains…

Q: Public Key cryptography refers to: O The use of a secret algorithm for encryption and decryption The…

A: Public key cryptography is a fundamental aspect of modern cybersecurity and encryption techniques.…

Q: How many keys are required when using cryptography with a shared secret key?

A: Cryptography is the practice of securing information by converting it into a form that cannot be…

Q: What is the smallest value of a valid encryption key and the corresponding decryption key? You are…

A: The Answer is

Q: Many symmetric block ciphers use a similar structure as the Feistel Cipher. Briefly explain the…

A: Feistel block cipher is a structure used to derive many symmetric block ciphers such as DES…

Q: Find the decryption key for the affine cipher with n=26, a=5 and b=8. Encrypt the message with the…

A: Required:   Find the decryption key for the affine cipher with n=26, a=5 and b=8. Encrypt the…

Q: In public key cryptography, private key is used by the sender to encrypt the data to be send. True/…

A: In public-key cryptography, any person can encrypt a message using the intended receiver's public…

Q: Block ciphers are less common in symmetric encryption algorithms Group of answer choices True…

A: Introduction: Using a cryptographic algorithm and key to encrypt data in blocks, a block cypher is a…

Q: Use the values below to decrypt the numerical ciphertext c = 9. Use the following cryptoscheme:…

A: TERMINOLOGIES: Decryption: The process of getting plaintext back from cipher-text using various…

Q: How does the "key length" in public key encryption algorithms affect security, and what trade-offs…

A: Encryption algorithm is used to transform data into ciphertext.Types of encryption…

Q: key : security plain text: hack it now using 3x3 hill cipher, encrypt and decrypt following…

A: Hill Cipher:-  Hill cipher is a poly graphic substitution cipher based on linear algebr

Q: algorithm to generate one symmetric key from another one, and uses those two mathematically related…

A: yes it true as

Q: Public key cryptosystems are: (more than one may be true, choose all that are true) a offering a…

A: Cryptosystem:A cryptosystem, also known as a cryptographic system or encryption system, is a set of…

Q: Why is it not desirable to reuse a stream cipher key?

A:

Q: Decrypt: Encryption and decryption are mathematical inverses using the Caesar/Rail Fence Ciphe

A: Introduction Rail fence ciphers (also called zigzag ciphers) are a form of transposing cipher. It…

Q: Assume the Public Key E=7 and N=35, encrypt the letter 'C' using RSA and write down the…

A: Here, E = 7 N = 35

Q: Encrypt the plaintext 6 using RSA public key encryption algorithm. Use prime numbers 11 and 3 to…

A: RSA(Rivest-Shamir-Adleman) is an encryption technique based on a public-key cryptosystem. This…

Q: Briefly describe the digital signature algorithm (DSA) based  on the digital  signature standard in…

A: Here we will discuss about the digital signature algorithm (DSA) based  on the digital  signature…

Q: In a system an RSA algorithm with p=5 and q=11, is implemented for data security. What is the value…

A: Introduction :Given ,  RSA algorithm implementation ,  p=5 and q=11 the value of the encryption key…

Q: Encrypt the word PERFECT using p=43 and q=59 and e=13. Use the RSA Public- Key Cryptography.

A:

Q: What are the potential risks associated with "key reuse" in encryption?

A: "Key reuse" in encryption refers to the practice of using the same encryption key for multiple…