RSA Laboratories of RSA Security Inc. offers its Public Key Cryptography Standards (PKCS) to developers of computers that use public key and related technology. PKCS #11, also known as Cryptoki, is the cryptographic token interface standard. It specifies an application programming interface (API) to devices, referred to as tokens, that hold cryptographic information and perform cryptographic functions. The PKCS #11 API is an industry-accepted standard commonly used by cryptographic applications. ICSF supports PKCS #11, providing an alternative to IBM®'s Common Cryptographic Architecture (CCA) and broadening the scope of cryptographic applications that can make use of zSeries cryptography. PKCS #11 applications developed for other platforms can be recompiled and run on z/OS®.