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

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.