some other product. The most prominent general deployments of SPKI/SDSI are E-speak, a middleware product from HP that used SPKI/SDSI for access control of web methods, and UPnP Security, that uses an XML dialect of SPKI/SDSI for access control of web methods, delegation of rights among network participants, etc. See also SPKAC Notes External links SPKI homepage, JSDSI (open source development effort) CDSA (open source development effort). Key management