For payload types that
embed the payload in the document, or which otherwise consist of a single
object, a single hash value must be provided in a PayloadHash child element. If
the payload is broken into a set of blocks, the PayloadHash element is optional.
When referring to a
ReferenceValuePayload element which uses chunking, the TotalHash child element
must be a hash of the ordered concatenation of block hashes, using the same
standard base64 encoding found in the HashBlock elements. That element is
followed by a sequence of BlockHash elements, each of which must have a block
attribute indicating which block of the ReferenceValuePayload it matches. These
hashes must be of the same type as the parent HashVerification element.
<xs:complexType name="HashVerificationType"><xs:annotation><xs:documentation><p xmlns="http://www.w3.org/1999/xhtml" ism:classification="U" ism:ownerProducer="USA">Hash values to verify contents of a payload.</p><p xmlns="http://www.w3.org/1999/xhtml" ism:classification="U" ism:ownerProducer="USA">For payload types that embed the payload in the document, or which otherwise consist of a single object, a single hash value must be provided in a PayloadHash child element. If the payload is broken into a set of blocks, the PayloadHash element is optional.</p><p xmlns="http://www.w3.org/1999/xhtml" ism:classification="U" ism:ownerProducer="USA">When referring to a ReferenceValuePayload element which uses chunking, the TotalHash child element must be a hash of the ordered concatenation of block hashes, using the same standard base64 encoding found in the HashBlock elements. That element is followed by a sequence of BlockHash elements, each of which must have a block attribute indicating which block of the ReferenceValuePayload it matches. These hashes must be of the same type as the parent HashVerification element.</p></xs:documentation></xs:annotation><xs:choice><xs:sequence><xs:element ref="PayloadHash" minOccurs="1" maxOccurs="1"/><xs:group ref="BlockedHashGroup" minOccurs="0" maxOccurs="1"/></xs:sequence><xs:sequence><xs:group ref="BlockedHashGroup" minOccurs="1" maxOccurs="1"/></xs:sequence></xs:choice><xs:attribute ref="hashType" use="required"/></xs:complexType>
Schema location
HashVerification.xsd Copy and paste this link to your file browser, clicking the link MAY open in the browser. Opening in an XML aware editor is best.
This document has been approved for Public Release by the Office of the Director of National Intelligence. See Distribution Notice for details.
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