Section 2(1)(z) in The Digital Signature (End entity) Rules, 2015
(z)"time stamp token " means a cryptographically secure confirmation generated by applying digital signature of a time stamping service provider that includes the time when the confirmation was generated;(za)"time stamping service provider " means a trusted entity authorised to generate time stamps;(i)with xml, content and presentation are separate;(i)xml digital signature element shall exist as a standalone document or envelop the data object that it signs;(i)should be used for a particular purpose where as a schema describes the structure of an xml document and provides specification of element names that indicates which elements are allowed in an xml document, and in what combinations; and(ii)should provide extended functionality such as data types, inheritance, and presentation rules and default values for attributes;(zg)"xml transform" means an element that specify an optional ordered list of processing steps applied to the data objects before it was digested where the transforms include canonicalization, encoding or decoding, extensible style sheet language transformations, xpath filtering, and xml schema validation;(zh)"xml name space" means a uniform resource identifier (uri) reference where the mechanisms described in the specification are used in xml documents as element types and attribute names and also to use various xml vocabularies without having name collision.(ii)xml digital signature element shall have signed info, signature value, key info, object and has id attribute of type child elements in order in which they appear;(zd)"xml digital signature" means the digital signature on xml electronic record;(ze)"xml document" means a document with xml logical and physical structure that is used to carry data elements, composed of declarations, elements, comments, character references, and processing instructions and a physical structure composed of entities, starting with the root, or document entity;(zf)"xml schema" means a set of pre-defined or user defined keywords and their attributes arranged in a structured manner, shall satisfy the following,-(ii)the structure of xml data in a particular context is described using either xml schema or a document type definition;(iii)xml schema or a document type definition are stored separately from the xml document itself and can be used to validate a given xml document for conformance;(zc)"xml digital signature element" means an element that defined by standard xml schema for capturing the result of a digital signature operation applied to arbitrary data in xml format, shall satisfy the following,-(zb)"xml" means Extensible Markup Language that provides a standard methodology with formal syntax to identify elements of information, describe the structure of data and also to store data in an independent manner, shall have the following properties,-