Encryption and Decryption

1. M’= IT(M, k13,k14)

2. {L(0),R(0)}=M’

3. For (r=1; r<=12;r++)

{ R(r)=L(r-1) XOR F( R(r-1),K(r));

L(r)=R(r-1);

}

4. C’={R(12),L(12)}

5. C =FT(C’, K(16),K(15))

1. C’= IT(C,K(16),K(15);

2. {R(12),L(12)}=C’

3. For (r=12;rɬr--)

{ L(r-1)=R(r) XOR F(L(r),K(r))

R(r-1)=L(r)

4. M’=(L(0),R(0))

5. M = FT(M’, K(13),K(14))

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