A hashing function for digital signature
(i) must give a hashed message which is shorter than the original message
(ii)must be hardware implementable
(iii) two different messages should not give the same hashed message
(iv) is not essential for implementing digital signature
a. i and ii
b. ii and iii
c. i and iii
d. iii and iv
(i) must give a hashed message which is shorter than the original message
(ii)must be hardware implementable
(iii) two different messages should not give the same hashed message
(iv) is not essential for implementing digital signature
a. i and ii
b. ii and iii
c. i and iii
d. iii and iv