Represents an identifier type with the following properties :
- identifier (URI for XAdES and/or OID for CAdES);
- identifier qualifier (URI or URN encoding);
- description;
- document references;
It identifies the context of the machine processable declarative statement whose reference implementation(s) used by the
pointing contracting party is (are) declared in the CertificateContentDeclarationPointingParty element and
whose equivalent implementation(s) used by the pointed contracting party is (are) declared in the
CertificateContentDeclarationPointedParty element.
This Enumeration defines a list of algorithm described in ETSI TS 119 182-1
for incorporation of 'sigD' dictionary (see 5.2.8 The sigD header parameter)