Trusted Data Format: Difference between revisions

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{{ infobox file format

| name = Trusted Data Format

| icon = [[File:Open TDF Icon.png]]

| logoiconcaption = Open TDF = icon

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| extension = <code>.tdf</code>

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| owner = [[ODNI]]

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| latest release version = 2.0

| latest release date = Jan 13, 2014

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| latest release version = 23.0

| latest release date = JanSept 136, 20142013

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| url = [httphttps://www.dni.gov/index.php/aboutwho-we-are/organizationorganizations/chiefic-informationcio/ic-officertechnical-specifications/trusted-data-format ODNIDNI TDF Specification ]

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The '''Trusted Data Format''' ('''TDF''') is a data object encoding specification for the purposes of enabling data tagging and cryptographic security features.<ref name="DNI">{{Cite web|url=https://www.dni.gov/index.php/who-we-are/organizations/ic-cio/ic-cio-related-menus/ic-cio-related-links/ic-technical-specifications/trusted-data-format|title = Trusted Data Format}} {{Dead link|date=April 2025}}</ref> These features include [[Logical assertion|assertion]] of data properties or tags, [[Electronic signature|cryptographic binding]] and [[encryption|data encryption]]. The TDF is freely available with no restrictions and requires no use of proprietary or patented technology and is thus open for anyone to use.

The '''Trusted Data Format''' ('''TDF''') is an [[XML]] based [[file format]] developed by the [[United States Department of Defense]] for the purposes of enabling file level tagging and security features. These features include [[metadata]] association, [[Electronic signature|cryptographic binding]] and [[encryption|data encryption]].

== Overview ==

The TDF Specification is based on a '''Trusted Data Object''' ('''TDO''') which can be grouped together into a '''Trusted Data Collection''' ('''TDC''').<ref name="IAD">http{{cite web | url=https://semanticommunity.info/@api/deki/files/27730/Lang-TTC_Biometric_BigData_Conf_fl13.pdf | title=Biometrics: Big data, analytics and biometric-enabled intelligence | archive-url=https://web.archive.org/web/20170718145403/https://semanticommunity.info/@api/deki/files/27730/Lang-TTC_Biometric_BigData_Conf_fl13.pdf | archive-date=2017-07-18}} {{Dead link|date=April 2025}}</ref> Each TDO is comprisedconsists of a data payload which can be associated with an unlimited number of metadata objects. The TDO supports the cryptographic binding of the metadata objects to the payload data object.<ref name="IAD"/> In addition, both data and metadata objects can be associated with a block of encryption information which is used by any TDF consumer to decrypt the associated data or metadata if it had been encrypted.<ref name="IAD"/> A TDC allows for additional metadata objects to apply to a set of TDO'sTDOs.

== Implementations ==

The [[United States Intelligence Community]] maintains the IC-TDF, which includes government-specific tagging requirements on top of the core TDF capabilities mentioned above, in an XML Data Encoding Specification.

The [[United States Department of Defense]] uses TDF to implement the [[Department of Defense Discovery Metadata Specification]] (DDMS).

== References ==

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==External links==

* [httphttps://www.dni.gov/index.php/aboutwho-we-are/organizationorganizations/ic-cio/ic-cio-related-menus/ic-cio-related-links/chiefic-informationtechnical-officerspecifications/trusted-data-format US Office of the Director of National Intelligence website on the TDF Specification]

*[https://www.nytimes.com/2014/07/17/technology/personaltech/ways-to-protect-your-email-after-you-send-it.html?emc=edit_th_20140717&nl=todaysheadlines&nlid=68634180&_r=0 Wood, Mollie, ''Easier Ways to Protect Email From Unwanted Prying Eyes'', New York Times, July 16, 2014 video and article]

[http://www.dni.gov/index.php/about/organization/chief-information-officer/trusted-data-format US Office of the Director of National Intelligence website on the TDF Specification]

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[[Category:Cryptography standards]]

[[Category:XML-based standards]]

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