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Name DROID Signature File Format
Version 1.0
Other names  
Identifiers PUID:  fmt/121
MIME:  text/xml
Classification Text (Mark-up)
Disclosure Full
Description The DROID Signature File format is a format for storing internal and external signatures used by the DROID software tool to perform automatic file format identification. It was developed by The National Archives of the UK. DROID Signature Files are generated by TNA from the PRONOM technical registry, and are issued periodically as new formats are added to the registry. A DROID Signature File is an XML document, comprising an 'FFSignatureFile' element, which describes the version number and date of the signature file, an 'InternalSignatureCollection' element, which contains the set of internal signature values, and a 'FileFormatCollection' element, which contains information on the set of formats described, together with their associated external signatures. The version number of a Signature File is incremented each time a new signature file is issued from the PRONOM registry, and does not indicate a different version of the format itself.
Orientation Text
Byte order  
Related file formats Has priority over Extensible Markup Language (1.0)
Technical Environment  
Released 17 Sep 2005
Supported until  
Format Risk  
Developed by Digital Preservation Department / The National Archives
Supported by None.
Source Digital Preservation Department / The National Archives
Source date 11 Oct 2005
Source description  
Last updated 11 Oct 2005
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