Written Assignment

Cryptography

You have been selected to be the leader of a Secret Spy Team! As a mathematician in training, your expertise with functions will be helpful in securing top secret communications between your team members. Your team$$s goals and objectives are to encode secret messages with details on your next team$$s meeting. As Team Leader you are to help train the team to use functions to encode the messages making them unreadable to anyone outside of your team.

Each letter of the alphabet and a blank space can be represented as a two$-$digit number.

Numerical Look$-$Up Table:

A $=1$

B $=2$

C$=3$

D $=4$

E $=5$

F $=6$

G $=7$

H $=8$

I $=9$

J $=10$

K $=11$

L $=12$

M $=13$

N $=14$

O $=15$

P $=16$

Q $=17$

R $=18$

S $=19$

T $=20$

U $=21$

V $=22$

W $=23$

X $=24$

Y $=25$

Z $=26$

Space $=27$

Pick an encoding$/$decoding pair of functions from the list of functions. These inverse functions are the keys to encoding and decoding your team$$s messages.

Encoding A Message:

a$)$ First part of message: Using your first name with your first name, and the Numerical Look$-$up Table, represent the following message numerically. Once you convert the message to numerical form, use the encoding function you selected from the list to make the message secret.

T

H

I

S

I

S

F

I

R

S

T

N

A

M

E

The name is "Khage"