Elliptic curve cryptosystems:

A.
Cannot be used to implement digital signatures.

B.
Have a higher strength per bit than an RSA.

C.
Cannot be used to implement encryption.

D.
Have a lower strength per bit than an RSA.

Explanation:
The correct answer is “Have a higher strength per bit than an RSA”. It is more difficult to compute
Elliptic Curve discreet logarithms than conventional discreet logarithms or
factoring. Smaller key sizes in the elliptic curve implementation can
yield higher levels of security. Therefore, answer “Have a lower strength per bit than an RSA” is
incorrect.
Answers “Cannot be used to implement digital signatures” and “Cannot be used to implement
encryption” are incorrect because elliptic curve cryptosystems

can be used for digital signatures and encryption.