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MS Base

• prefix: ms:
• schema: b:

Categories (Data):

• constants
• documentation
• definitions
• payloads
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Categories (Governance):

• collections
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payloads:

• b:alternative
• b:attachment
• b:blob
• b:checksum
• b:content
• b:data
• b:fetch
• b:location
• b:native
• b:packaged
• b:param
• b:part
• b:payload
• b:preview
• b:source

Schema element "b:checksum"

One checksum on bytes.

Definitions

<element name="checksum">
  <complexType>
    <simpleContent>
      <extension base="b:Bytes">
        <attribute name="by" type="b:UnitRef" use! />
      </extension>
    </simpleContent>
  </complexType>
</element>

Description

Contains a checksum of the byte content.

Be aware that MD5 sums are fast but not safe against directed attacks. SHA1-sums are close to being breached. When you do trust the source of your bytes, there is nothing wrong with either. But when your data is transported over unprotected infrastructure, then you should use better sums.

Examples

<unit uid="cv.html">
  <content>
    <mediatype>iana:MimeType/text/html</mediatype>
    <checksum encoded="wp:Encoding/Hex" by="wp:Checksum/MD5">
       490201fd0ae7192044e0a18f270182e3
    </checksum>
    <checksum encoded="wp:Encoding/Base64" by="wp:Checksum/SHA256">
       03bea1dc02b7756f7393ba0d10121081f7348542769f2328bd93c262a719a46f
    </checksum>
    <fetch />
  </content>
</unit>