Questions for LTV display problems!
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I'm currently using a non-LTV timestamping service but when I open a file in Adobe AcrobatReader, it shows as LTV enabled. What could be the cause of this problem?
And I have one more question.
Using a same file and open it in Adobe AcrobatReader, one shows LTV enabled and other is non-LTV. this happens sometimes depending on the person, please let me know the cause of this as well.
Thanks for your help!
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What is an LTV-display?
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I believe the Op is referring to the long-term validity of the signed agreements.
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I checked them, but there were not enough information about LTV.
I want to know how the system decide whether or not a file is LTV available.
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Hi @Aoi35050081ungj ,
To learn how the system decide wether or not a file is LTV involves different steps from the moment the signature was created and assigning the required chain of trust mechanisms to the certificate-based signature at signing time.
Doing so, will ensure (or at least in theory) that the signed document will remain valid and verifiable past the lifetime of the embedded time-stamp of that certificate-based digital signature .
I would say that it is not the system that decides, but a series of standards and PDF specifications that define the mechanisms that will verify or enforce the validity of a signed document.
This is explained in more detail in the links that I am sharing below, in particular this discussion:
Which complements the second link that I posted earlier for the OP: Validating digital signatures, Adobe Acrobat and also complements this link: Long-Term Validation (LTV) of PDF Digital Signatures in Adobe Acrobat - SSL.com
See more in-depth information here:

