Describe an autokey cipher and use it with initial key K1=6 to

encrypt a plaintext Information.

2. Describe Random Mapping Cipher and use the following table

to encrypt a plaintext tutorial and Homework

3. Use the additive cipher with K=10 to encrypt a plaintext

Homework.

Note that: Operation is in modulo 26

4. Describe Playfair Cipher, and use the following table to encrypt

a plaintext university

Explain and Use Vigenere cipher to encrypt the message

homework using keyword student.

6. Use an affine cipher with K=(7,2) to encrypt security.

Explain and Use Unkey Transpositional ciphering to encrypt the

message Information Technology

Note that both parties agreed on the number of columns which

is 4

8. Explain and Use Keyed columnar transposition cipher to encrypt

a plaintext Meet me at the park with key Study

Note: both parties agreed on the number of columns is 5.