RC4/RC5/RC6A series of symmetric encryption algorithms developed by RSA Security.
- RC4 -- a variable key-size stream cipher with byte-oriented operations. The algorithm is based on the use of a random permutation.
- RC5 -- a parameterized algorithm with a variable block size, a variable key size, and a variable number of rounds. Allowable choices for the block size are 32 bits (for experimentation and evaluation purposes only), 64 bits (for use a drop-in replacement for DES), and 128 bits. The number of rounds can range from 0 to 255, while the key can range from 0 bits to 2040 bits in size. RC5 has three routines: key expansion, encryption, and decryption.
- RC6 -- a block cipher based on RC5. RC6 is a parameterized algorithm where the block size, the key size, and the number of rounds are variable. The upper limit on the key size is 2040 bits. RC6 adds two features to RC5: the inclusion of integer multiplication and the use of four 4-bit working registers instead of RC5��s two 2-bit registers.
Because nothing says "I Love You" Like an open source app. Read More »Guarding your Data against Cyber Attacks
In this new era of heightened stakes comes an increased need for a comprehensive security strategy. Let's take a look at how cyber-threats have... Read More »The Great Data Storage Debate: Is Tape Dead?
Tape clearly is on the decline. But remember, legacy systems can hang for a shockingly long time. Read More »
A network is a group of two or more computer systems or devices, linked together to share resources, exchange files and electronic communications.... Read More »Computer Architecture Study Guide
This Webopedia study guide describes the different parts of a computer system and their relations. Read More »Webopedia Polls
The trend for the past two years has been for shoppers to spend more online during the holiday season. How do you typically shop for holiday... Read More »
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
- Watch Datamation's editor James Maguire moderate roundtable discussions with tech experts from companies such as Accenture, Dell, Blue Jeans Network, Microsoft and more »