CISSP questions: Encryption

What encryption algorithm is best suited for communication with handheld wireless devices?
ECC
RSA
SHA
RC4

Question 671 | Difficulty level: 4/5 | Relevancy: 3/3
Correct answer: ECC
Details: The Elliptic Curve Cryptosystems (ECC) are used as asymmetric algorithms and can provide signature, key distribution and encryption functionality. The fact that it uses less resource makes it appropriate for small handheld devices.
Study area: CISSP CBK domain #5 - Cryptography
Covered topics: Elliptic Curve Cryptosystems (ECC), Mobile, wireless and satellite technologies and security

This question is Sponsor and authorized by CCCURE

Telephone Encryption: PhoneCrypt

PhoneCrypt is a professional telephone encryption software designed to combat eavesdropping and interception by providing Military Grade (using ultra-strong 4096 bit) security for your confidential mobile phone conversations.

Supported by the platforms: Windows Mobile Phone Edition 2003, Windows Mobile Phone Edition 2003SE, Windows Mobile Phone Edition

PhoneCrypt
Mobile Phone Encryption Software

· Encrypts telephone conversations securely
· Military grade encryption
· 4096 bit RSA key exchange encryption
· 256 bit AES (SHA 256) communications encryption
· Detects and allerts man-in-the-middle attacks
· Securely encrypts SMS messages
· Secure chat (messaging) functionality
· Container based document and directory encryption (PocketCrypt)
· Conversation recording

PhoneCrypt also protects the storage area of the telephone by encrypting data (documents, excel sheets, emails etc) so that your confidential information will remain secure even if the device is stolen or lost.

http://www.securstar.com/products_phonecrypt.php

CBK domain: Cryptography