Q: When I try to sign with a timestamp server, this error displays “Signature hash will not fit in allotted space. Increase timestamp server length estimate”. How can I solve this issue? A: This issue happens due to timestamp server length is not set correctly. You can solve this issue by increasing signature length for […]
Articles Tagged: timestamp
What Timestamp Servers to Use when Signing PDF Documents
Q: I want to add timestamps when adding digital signatures to PDF documents in PDF Studio. Do you have a list of timestamp servers available? A: We added support for SHA512 algorithm for communication with timestamp servers in version 2020. This FreeTSA – Guide recommends using SHA-512. SHA-512 is part of SHA-2 (read more on […]
“The signature contains a timestamp (…) that is not trusted” displays on signature validation status dialog
Q: When looking at a digital signature validation status dialog, I see “The signature contains a timestamp from a Timestamp Authority that is not trusted” message. What is this message and how can I solve it? A: Timestamps are signed just as documents are signed. For a timestamp signature to be valid, you must have trusted […]
