RSA Data Security, Inc. RSA Data Security requires no introduction when identifying its influence and indisputable authority on encryption technology. Time-tested and proven methods for securing data have been licensed from RSA and used in the iServer implementation of Secure Socket Layers (SSL). RSA developed two (RC2 and RC4) of the three encryption algorithms recognized by the current WWW browsers, and iServer supports all three (including DES). SSL provides iServer customers with the crucial component of Secure Commerce Servers.