1. Encrypt the message “Take your bag with clothes” using the Hill cipher with the key ! 3 2 3 5 <-it is matrix Show your calculations and the result.
1. Encrypt the message “Take your bag with clothes” using the Hill cipher with the key !
3 2
3 5 <-it is matrix
Show your calculations and the result.
2.This problem explores the use of a one-time pad version of the Vigenere cipher. In this
scheme, the key is a stream of random numbers between 0 and 26. For example, if the key is 18
9 3…, then the first letter of plaintext is encrypted with a shift of 18 letters, the second with a
shift of 9 letters, the third with a shift of 3 letters, and so on.
Encrypt the plaintext “cryptography” with the key stream
10 22 5 4 1 0 2 9 18 16 16 0
3.Does the set of residue classes (mod3) form a group with respect to modular addition?
4. Determine -11 mod 9
5. Determine gcd(65042, 40902)
6.Using the extended Euclidean
Please write the correct answer. Thank you!
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