The RC4 algorithm was designed by Ron Rivest of RSA Security in 1987 and is most commonly used to protect Internet...
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
traffic using the SSL (Secure Sockets Layer) protocol. Stream ciphers can be thought of as seeded random number generators -- the seed being the key -- with the random numbers being combined with the plain text to generate ciphertext. With RSA keys, it is important to use the 128-bit version, because the 40-bit version can be exploited. Also, ensure that the application follows the recommended practice for key generation. With stream ciphers, it's important to generate a new key for each piece of encrypted data, otherwise an attacker can mount a successful attack by analyzing a large number of messages encrypted with the same key. Poor implementation of key generation has resulted in successful attacks against WEP (Wired Equivalent Privacy) systems. The recommended solution to the flaws in WEP is to switch to Wi-Fi Protected Access (WPA or WPA2). WPA uses the Temporal Key Integrity Protocol (TKIP), which dynamically changes keys as the system is used.
Dig Deeper on Email and Messaging Threats-Information Security Threats
Related Q&A from Michael Cobb
A technique known as the GhostHook attack can get around PatchGuard, but Microsoft hasn't patched the flaw. Expert Michael Cobb explains why, as well...continue reading
Software developed by the hacking group Platinum takes advantage of Intel AMT to bypass the built-in Windows firewall. Expert Michael Cobb explains ...continue reading
Tensions between the U.S. and Russia have led to source code reviews on security products, but the process isn't new. Expert Michael Cobb explains ...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.