What encryption algorithm is best suited for communication with handheld wireless devices?

A.
ECC

B.
RSA

C.
SHA

D.
RC4

Explanation:
“Eliptic curves are rich mathematical structures that have shown usefulness in many
different types of applications. An Elliptic Curve Cryptosystem (ECC) provides much of the same
functionality that RSA provides: digital signatures, secure key distribution, and encryption. One
differing factor is ECC’s efficiency. Some devices have limited processing capacity, storage, power
supply, and bandwidth like wireless devices and cellular telephones. With these types of devices,
efficiency of resource use is very important. ECC provides encryption functionality requiring a
smaller percentage of resources required by RSA and other algorithms, so it is used in these types
of devices. In most cases, the longer the key length, the protection provided, but ECC can provide

the same level of protection with a key size that is smaller than what RSA requires. Because
longer keys require more resources to perform mathematical tasks, the smaller keys used in ECC
require fewer resources of the device.” Pg. 491 Shon Harris: All-In-One CISSP Certification Guide.