How do I create a signature in Java?

What is digital signature in Java?

Technically speaking, a digital signature is the encrypted hash (digest, checksum) of a message. That means we generate a hash from a message and encrypt it with a private key according to a chosen algorithm. The message, the encrypted hash, the corresponding public key, and the algorithm are all then sent.

How do I add a signature to a PDF in Java?

Add Digital Signature to a PDF using Java

  1. Create an instance of the Document class and initialize it with the PDF document’s path.
  2. Initialize the PdfFileSignature class and pass to it the Document object.
  3. Create an instance of PKCS7 class and initialize it with a certificate’s path and the password.

How do I create an electronic signature in Word?

To add a digital signature, open your Microsoft Word document and click where you’d like to add your signature line. From the Word ribbon, select the Insert tab and then click Signature Line in the Text group. A Signature Setup pop-up box appears. Enter your information in the text fields and click OK.

How do you add a signature to a PDF?

How to add a signature to a PDF

  1. Open the PDF file in Adobe Acrobat Reader.
  2. Click on Fill & Sign in the Tools pane on the right.
  3. Click Sign, and then select Add Signature.
  4. A popup will open, giving you three options—Type, Draw, and Image. …
  5. Drag, resize and position the signature inside your PDF file.
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