Network Security Services (NSS) is a set of libraries designed to support cross-platform development of security-enabled communications applications. Applications built with the NSS libraries support the SSL protocol for authentication, tamper detection, and encryption, as well as PKCS #11 for cryptographic token interfaces. Red Hat uses NSS to support these features in a wide range of products, including Certificate System. NSS documentation is available on-line at http://www.mozilla.org/projects/security/pki/nss/overview.html.