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XML Schema definitions for HashedDoc document formats used with TrustWeaver detached signature operations.
HashedDoc schema
The HashedDoc format is a well-formed XML document that contains a single hex-encoded digest of the content to be signed. Use it when the actual document cannot be transmitted in the request; for example, because of its size or confidentiality constraints. The digest algorithm is identified by its OID.
XML
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.trustweaver.com/ts/hashedDocumentTypes"
xmlns="http://www.trustweaver.com/ts/hashedDocumentTypes"
elementFormDefault="qualified">
<xs:element name="hashedDocument">
<xs:complexType>
<xs:sequence>
<xs:element name="digest">
<xs:complexType>
<xs:simpleContent>
<xs:extension base="xs:hexBinary">
<xs:attribute name="oid" type="xs:string"/>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>Example HashedDoc file. The digest is a hex-encoded SHA-256 value of the signed content.
XML
<?xml version="1.0" encoding="UTF-8"?>
<hashedDocument xmlns="http://www.trustweaver.com/ts/hashedDocumentTypes">
<!-- Hex-encoded SHA-256 message digest computed on the content -->
<!-- Do not include whitespace characters in the digest value -->
<digest oid="2.16.840.1.101.3.4.2.1">
a75019ac38e0d3570633fa282f3d95d20763657f4a2fe851fae52a3185d1eded
</digest>
</hashedDocument>
Note: The OID
2.16.840.1.101.3.4.2.1 identifies SHA-256. Do not include whitespace in the digest value element.