1.Select p,q =3,11
2.Calculate n=p*q =33
3.Calculate @(n) = (p-1)*(q-1) = 20
4.Select e =7
5.Calculate d = ?
Public key KU = {e,n} KU = {7,33}
Private key KR = {d,n} KR = {3,33}
Encryption
Plaintext : M < n
M = 5
Ciphertext C = M^e mod n
C = 5^7mod 33
C = 14
Decryption
Ciphertext : C
Plaintext : M = C^d mod n
M = 14^3 mod 33
M = 5