Which asymmetric cryptosystem is used for digital signatures

Which asymmetric cryptosystem is used for digital signatures?

A. DES

B. SHA1

C. Diffie-Hellman

D. ECC

Solution

D. Elliptic curve cryptosystems (ECC) is an asymmetric cryptosystem created in the 1980s to create and store digital signatures in a small amount of memory. Answer A is incorrect because DES is a symmetric algorithm. Answer B is incorrect because SHA1 is a hashing algorithm. Answer C is incorrect because Diffie-Hellman is used for key exchange.