RSA problem: given plaintext P, e, prime numbers p, q, compute ciphertext C. Decrypt C and verify you get plaintext P back.
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21. RSA problem: given plaintext P, e, prime numbers p, q, compute ciphertext C. Decrypt C and verify you get plaintext P back.
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- The Reflection algorithm can be used to encrypt a C-string (character array terminated with the null character) before it is transmitted over the Internet. The Reflection algorithm works as follows: Each letter in the message is converted to the letter in that is 13 positions to the right of that letter in the English alphabet. If the end of the alphabet is reached, counting continues from the first letter in the alphabet. The case of the letters must be maintained. For example,'M' →'Z', 'x' → 'k', 'A' → 'N'The numeric characters ('0' to '9') are shifted 5 positions to the right of that number in the character set '0' to '9'. If ‘9’ is reached, counting continues from ‘0’. For example,'0' → '5', '2' →'7', '8' → '3' All other characters are left as they are. a) What would the following string be encrypted to by the Reflection algorithm?“Call me at 662-2002 Ext 85393” b) Write a function, getPosition, which finds the position of a letter in the alphabet regardless of the case of the…Implement the first round of AES ( Advanced Encryption Standard ) in python. Given a message with 128 bits, two subkeys subkey0 and subkey1, your program should be able to perform one AddKey before Round 1 and the corresponding operations (SubBytes, ShiftRows, Mix-Columns, and AddKey) in Round 1, and output the result of the encryption after Round 1.Fix the error with ss.
- Write a Program using any programming language you are comfortable with to implement Ceasar Shift cipher technique. The algorithm should take “plaint text” and key as input and gives the cipher text as output.Example 2 Enter message to be encrypted: Dèyè mòn, gen mòn. Enter step size: -1 ORIGINAL MESSAGE Dèyè mòn, gen mòn. ENCRYPTED MESSAGE Cçxç lim, fdm lim. Enter message to be encrypted: Dèyè mòn, gen mòn. Enter step size: 0 ORIGINAL MESSAGE Dèyè mòn, gen mòn. ENCRYPTED MESSAGE Dèyè mòn, gen mòn. Enter message to be encrypted: QUIT Example 3 Enter message to be encrypted: Perfer et obdura, dolor hic tib: proderit olim. Enter step size: 8 ORIGINAL MESSAGE Perfer et obdura, dolor hic tibi proderit olim. ENCRYPTED MESSAGE Xmznmz m| wjl)zi, lwtwz pąk |qją xzwlmzą| wtqu. Enter message to be encrypted: QUITProblem 1.Write computer programs for the Substitution Cipher based on Z29 which is corresponding to 26 alphabetic characters (0 - 25), space (26), and “, ” (27) “.”(28).The key is a random permutation π on Z29. Write down encryption and decryptionprograms. For the encryption, the plaintext and the key need to be input. To inputthe key, use the permutation of 0, 1, . . . , 28. The plaintext should be input as Englishletters. The out put will be the ciphertext which is also English letters. Select aparagraph of text which contains more than 25 words (I don’t think any two peoplewill choose a same paragraph if they choose independently) and encrypt it using yourencryption algorithm. Then use your decryption program to check the correctness.You can use Java. Record your plaintext, ciphertext and the key π in your answer sheet.
- Experiment 1: IMPLEMENTATION OF CAESAR CIPHER Objective: To implement the simple substitution technique named Caesar cipher using C+ language. Theory: To enerypt a message with a Caesar cipher, each letter in the message is changed using a simple rule: shift by three. Each letter of the message is shifted a fixed distance (3 for example) down the alphabet, A becomes D, B becomes E, and so on. For the last letters, we can think of alphabet as a circle and "wrap around", W becomes Z. X becomes A, Y becomes B, and Z becomes C. To change a message back, cach letter is replaced by the one three before it. Example ABCDEFGHIJKLMNOPQRSTUVWXYZ t t t t t t t t ttt t t t t t t tt t t t t t t ft DEFGHIJKLMNOPQRSTUVW XY Z ABc) digorithm STEP-1: Read the plain text from the user. STEP-2: Read the key value from the user. STEP-3: If the key is positive then encrypt the text by adding the key with each character in the plain text. STEP-4: Else subtract the key from the plain text. STEP-5: Display the…The GMP library, using C or C++ The prefered solution is to use the Sage library. 2 Fermat test 1. Implement the Fermat test of primality with small integers. 2. Write a function to generate random k-bit prime numbers. 3 RSA 1. Write the key-generation function function of RSA. The function should generate two random primes p and q of size k/2 bits. 2. Implement the RSA encryption function 3. Implement the RSA decryption function 4. Check that decryption works0. Good binary strings are strings made of Os and 1s where there are no two consecutive Os. For example, 1011011101, 011010 etc. How many good binary strings of length k are there? [Hint: First you may try to find the highest possible number of Os in such strings in terms of k . It can be done separately for odd and even k. Use the Floor function to generalize. Giving the final answer in summation (E) form will suffice.]
- Develop a system using any programming language, which this system imports files and do the following: A. Tokenization and remove stop word. B. Sort every token alpha-beta with pointer for posting list. C. Steaming for every token . D. The Soundex for every token. E. Compute the similarity using Jaccard coefficientPython The Dan Cipher works like this: shift the first lowercase character to the right by 1, the second lowercase character to the right by 2, and so on. Characters that are not lowercase characters are not changed. Write a program that takes a string and prints the result of applying the Dan Cipher.It is the good idea to obscure relationship between your “real message” and “encrypted message”. Kindly transform the plain text i.e. “DETECT THE XYZ” using transposition and confusion methods.