Digital signatures, secret key distribution, and encryption are all carried out by which of the following algorithms?

A.
ECC

B.
Diffie-Hellman

C.
Blowfish

D.
RC4

Explanation:
Elliptic Curve Cryptosystem (ECC) first surfaced in the 1980s and is
replacing modular math with the algebraic functionality of elliptical curves. It is
extremely efficient due to very small key sizes and provides three primary services
(digital signing, secret key distribution, and data encryption). Diffie-Hellman can
only do key agreement and Blowfish and RC4 are symmetric, not asymmetric algorithms.