Compared to RSA, which of the following is true of elliptic curve cryptography?

A.
It has been mathematically proved to be the more secure

B.
It has been mathematically proved to be less secure

C.
It is believed to require longer keys for equivalent security

D.
It is believed to require shorter keys for equivalent security

Explanation:
CISSP All-In-One – page 491: “In most cases, the longer the key length, the more
protection provided, but ECC can provide the same level of protection with a key size that is
smaller than what RSA requires.”
CISSP Prep Guide (not Gold edition) – page 158: “… smaller key sizes in the elliptic curve
implementation can yield higher levels of security. For example, an elliptic curve key of 160 bits is
equivalent to 1024-bit RSA key.”