CTT is implemented as part of C2PA 2.1 by a number of commercial implementations from Microsoft, Google and Truepic. The only open source one that I am aware of at this time is from the CAI (https://github.com/contentauth/c2pa-rs).
We are also modifying our TimeStamp Manifest (ala ETSI AdES document timestamps) to also use the CTT approach. Leonard From: Thomas Fossati <[email protected]> Date: Wednesday, December 18, 2024 at 5:38 AM To: Michael Jones <[email protected]> Cc: [email protected] <[email protected]>, [email protected] <[email protected]>, Leonard Rosenthol <[email protected]> Subject: Re: [Rats] Implementations of draft-ietf-cose-tsa-tst-header-parameter EXTERNAL: Use caution when clicking on links or opening attachments. Hi Mike, On Wed, 18 Dec 2024 at 02:50, Michael Jones <[email protected]> wrote: > > What implementations of draft-ietf-cose-tsa-tst-header-parameter can I > document in the shepherd review? During WGLC Mike (Prorock) said he implemented it [1]. [1] https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fmailarchive.ietf.org%2Farch%2Fmsg%2Fcose%2FODGg2-CgOqGffy0CL_p0kEx4iFA%2F&data=05%7C02%7Clrosenth%40adobe.com%7C787aaa23239b40879bf908dd1f500ab4%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C638701150821336515%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=x7F4QIjaTep5yoDPTyCJ9off4a0yiT%2BvwjFOWE%2B8X3w%3D&reserved=0<https://mailarchive.ietf.org/arch/msg/cose/ODGg2-CgOqGffy0CL_p0kEx4iFA/> C2PA may also have code, but we should check that with Leonard (CC'd). cheers, t
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