1, PDF signature certificate;

2.AdobeAcrobat software;

3. PDF document to be signed.

(2) Open Adobe Acrobat software and configure the timestamp.

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Time stamp is a trusted time source, which can prove the trusted time of document signature. If no time stamp is added, the default time of PDF electronic signature is the local time of the computer.

(3) Use Adobe Acobat software to electronically sign the P DF document.

After configuring the timestamp, we can digitally sign the document. The signing steps and signed document pictures are as follows:

① Select the signing certificate and appearance.

② Signed PDF document