In Page 7 there's an example (1.4) that says:

"Take X = {1,2,3,...,10} and let f be the rule that for

each x E X, f(x)=rx where rx is the remainder when x^2 is divided

by 11. Explicitly then

f(1)=1 , f(2)=4 , f(3)=9 , f(4)=5 , f(5)=3

f(6)=3 , f(7)=5 , f(8)=9 , f(9)=4 , f(10)=1

"

f(x)=remainder_of(x^2/11) right?

f(3)=remainder_of(3^2/11)

then f(3) would be equal to 0.82 which the remainder is 8 and not 9,

the same happens in f(8). I dont know much this cryptography maths

but I still have interest in learn cryptography..

cya

## Bookmarks