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# Time Stamp Authority

Time Stamp Authorities (TSA) issue digitally signed timestamps (RFC 3161) that are optionally used during signed PDF export.

Adding a trusted timestamp to an electronic signature provides a digital seal of data integrity and a trusted date and time of when the transaction took place. Recipients of documents with a trusted timestamp can verify when the document was digitally or electronically signed, as well as verify that the document was not altered after the date the timestamp vouches for.

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Choose LibreOffice - Preferences Tools - Options - LibreOffice - Security - TSAs

## List of Time Stamp Authorities

Amuesa la llista de TSA esistentes.

## Amestar

Opens the Name dialog to enter a new Time Stamping Authority URL.

## Desaniciar

Deletes the selected entry in the list. Deletion is immediate and does not display a confirmation dialog.

Temes rellacionaos

Digital Signatures