DES
(i) is a symmetric key encryption method
(ii)guarantees absolute security
(iii) is implementable as hardware VLSI chip
(iv) is a public key encryption method
a. i and ii
b. ii and iii
c. i and iii
d. iii and iv
(i) is a symmetric key encryption method
(ii)guarantees absolute security
(iii) is implementable as hardware VLSI chip
(iv) is a public key encryption method
a. i and ii
b. ii and iii
c. i and iii
d. iii and iv