Shared session key establishment using a Key Distribution Center (KDC). Using the following table, illustrate how Alice can initiate a secure session with Bob with the help of KDC. Here, KEKs are the...

 Shared session key establishment using a Key Distribution Center (KDC). Using the following table, illustrate how Alice can initiate a secure session with Bob with the help of KDC. Here, KEKs are the long term key establishment keys used to transport the session keys across the network securely. Assume the encryption process to be as follows: Block (LB || RB) is 8 bits; Encryption Key (LK||RK) is 8 bits; Ciphertext = LC|| RC where LC=LB ⊕ RK; and RC=RB ⊕ LK; For example, if plaintext=A7 (Hexa) and Key = 6D; then LC=A ⊕ D = 1010 ⊕ 1101 = 0111 = 7 (Hexa); and RC = 7 ⊕ 6 = 0111 ⊕ 0110 = 0001 = 1 (Hexa); so Ciphertext = 71 (Hexa). To decrypt, it does the reverse operation: Given ciphertext of C=LC||RC, it finds plaintext B=LB||RB, by finding LB=LC ⊕ RK and RB = RC ⊕ LK.