A public-key encryption technology created by Ron Rivest, Adi Shamir, and Leonard Adleman of RSA Data Security, Inc. The key has two parts, one private and one public. Both parts are required for decryption. The RSA algorithm takes into account the inefficiency of factoring very large numbers. Therefore, decrypting an RSA key requires e enormous amounts of time and computer processing power. Used in Netscape Navigator, Microsoft Internet Explorer, and other applications that require industrial-strength encryption, the RSA algorithm has become a standard, especially for data sent over the Internet.