This is critical for digital signature compliance because personal signing certificates can expire, while the time stamp LTV can be renewed over time without changing the validity of the signature. Essentially providing a lock for the lock. The time stamp guarantees the Long-Term Validity (LTV) of the signed agreement by locking the signature as well as the document. This feature allows an account to configure their own licensed TSA for use on their digitally signed documents. Adobe configures time stamps at the application level, at the shard level and at the account level.Īdobe provides a TSA for all transactions, but some companies may already have a TSA in place and want to use this provider instead of the one provided by Adobe. TSAs are for profit companies that provide their services to clients like Adobe through PKI infrastructure. Identity can be established in a number of ways (certificate, logon, id card …) but the time stamp has to be provided by a trusted and authorized time stamping authority (TSA). The time stamp acts as a locking mechanism for both the signer’s identity and the document itself. These standards require that digital signatures establish both the signer’s identity and time of signature, and embed these into the document at the time of signing. Time stamps are a critical component of both the US and EU signature compliance standards PADes and eIDAS respectively.
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