SSL Acceleration and Offloading: What Are the Security Implications?

by Deb Shinder
Sept. 1, 2017 1 comment TechGenix Encryption & Authentication windows server security

SSL uses symmetric encryption (a single shared key for both encryption and decryption) to provide data confidentiality. Although this is considered less secure than asymmetric (public key) encryption that uses a matched key pair, that disadvantage is offset somewhat by the fact that symmetric encryption is much faster (something that is important in e-commerce transactions) and requires less processing. SSL encryption is strengthened by the use of a longer key; it can use DES, 3DES, RC2 and RC4, with key length up to 168 bits. Despite the fact that it uses faster symmetric encryption for confidentiality, SSL still causes a performance slowdown. That’s because there is more to SSL than the data encryption. The “handshake” process, whereby the server (and sometimes the client) is authenticated uses digital certificates based on asymmetric or public key encryption technology. Public key encryption is very secure, but also very processor-intensive and thus has a significant negative imp...

Irina Alexandra Negrii 7 months, 1 week ago

oh yes...a slow response is the most annoying problem one can deal with ..time is money