This specification uses Uniform Resource Identifiers [URI] to identify resources, algorithms, and semantics.The URI in the namespace declaration above is also used as a prefix for URIs under the control of this specification.This document specifies XML digital signature processing rules and syntax.
Patent disclosures relevant to this specification may be found on the Working Group's patent disclosure page, in conformance with W3C policy, and the IETF Page of Intellectual Property Rights Notices, in conformance with IETF policy.No provision is made for an explicit version number in this syntax.If a future version is needed, it will use a different namespace.When specifically discussing authentication values based on symmetric secret key codes we use the terms authenticators or authentication codes.(See Check the Security Model, section 8.3.) This specification provides an XML Schema [XML-schema] and DTD [XML]. The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this specification are to be interpreted as described in RFC2119 [KEYWORDS]: Consequently, we use these capitalized key words to unambiguously specify requirements over protocol and application features and behavior that affect the interoperability and security of implementations.