<?xml version="1.0" encoding="utf-8"?>
<PRONOM-Report xmlns="http://pronom.nationalarchives.gov.uk">
  <report_format_detail>
    <FileFormat>
      <FormatID>2063</FormatID>
      <FormatName>ZFO (Proof of Delivery) File</FormatName>
      <FormatVersion>
      </FormatVersion>
      <FormatAliases>
      </FormatAliases>
      <FormatFamilies>
      </FormatFamilies>
      <FormatTypes>Aggregate</FormatTypes>
      <FormatDisclosure>
      </FormatDisclosure>
      <FormatDescription>This variant of ZFO file is container for proof of delivery of data mailbox messages provided by Česká pošta, s.p. in three versions: 1. proof of delivery; 2. confirmation of delivery; 3. delivery failure. ZFO file is a ZIP archive file  (PKCS #7 Cryptographic Message File) composing of the layout structure using XML elements. The whole structure is always embedded into a digital signature represented by XML elements of the XML Signature standard.</FormatDescription>
      <BinaryFileFormat>
      </BinaryFileFormat>
      <ByteOrders>
      </ByteOrders>
      <ReleaseDate>
      </ReleaseDate>
      <WithdrawnDate>
      </WithdrawnDate>
      <ProvenanceSourceID>242</ProvenanceSourceID>
      <ProvenanceName>The National Archives of the Czech Republic / The National Archives of the Czech Republic</ProvenanceName>
      <ProvenanceSourceDate>18 Jan 2020</ProvenanceSourceDate>
      <ProvenanceDescription>
      </ProvenanceDescription>
      <LastUpdatedDate>18 Jan 2020</LastUpdatedDate>
      <FormatNote>http://isds.czechpoint.cz/v20/delivery</FormatNote>
      <FormatRisk>
      </FormatRisk>
      <TechnicalEnvironment>
      </TechnicalEnvironment>
      <FileFormatIdentifier>
        <Identifier>application/vnd.software602.filler.form-xml-zip</Identifier>
        <IdentifierType>MIME</IdentifierType>
      </FileFormatIdentifier>
      <FileFormatIdentifier>
        <Identifier>fmt/1245</Identifier>
        <IdentifierType>PUID</IdentifierType>
      </FileFormatIdentifier>
      <ExternalSignature>
        <ExternalSignatureID>2301</ExternalSignatureID>
        <Signature>zfo</Signature>
        <SignatureType>File extension</SignatureType>
      </ExternalSignature>
      <InternalSignature>
        <SignatureID>1622</SignatureID>
        <SignatureName>ZFO (Proof of Delivery) File</SignatureName>
        <SignatureNote>Magic bytes: http://isds.czechpoint.cz/v20/delivery</SignatureNote>
        <ByteSequence>
          <ByteSequenceID>1893</ByteSequenceID>
          <PositionType>Absolute from BOF</PositionType>
          <Offset>0</Offset>
          <MaxOffset>20500</MaxOffset>
          <IndirectOffsetLocation>
          </IndirectOffsetLocation>
          <IndirectOffsetLength>
          </IndirectOffsetLength>
          <Endianness>
          </Endianness>
          <ByteSequenceValue>687474703A2F2F697364732E637A656368706F696E742E637A2F7632302F64656C6976657279</ByteSequenceValue>
        </ByteSequence>
      </InternalSignature>
      <RelatedFormat>
        <RelationshipType>Has priority over</RelationshipType>
        <RelatedFormatID>1469</RelatedFormatID>
        <RelatedFormatName>PKCS #7 Cryptographic Message File</RelatedFormatName>
        <RelatedFormatVersion>
        </RelatedFormatVersion>
      </RelatedFormat>
    </FileFormat>
    <SearchCriteria>Criteria</SearchCriteria>
  </report_format_detail>
</PRONOM-Report>
