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Digital signature


Built-in certificate parsing
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Digital Signatures can be considered as the electronic equivalent of a physical signature with ink on paper. However an electronic signature also provides certain advantages over an ink-and-paper signature. It can secure and protect a digital document by creating a signing fingerprint uniquely identifying a sender. The recipient of the document and signature confidence of the sender's identity validates that the document has not been altered by anyone else since it was signed.

Some of these main advantages are:

A digital signature allows precise identification of who created/signed a document. It can be safely assumed that when a signature is valid, you know who signed it.

A digital signature allows users to easily validate whether the contents of a document were changed after it was signed.

A digital signature ensures that the signer cannot deny that they signed the document.

PDFTron SDK benefits include:

  • Import signature fields via XFDF/FDF
  • Export signature data via XFDF/FDF
  • Built-in support for PKI signing (and PFX digital certificates)
  • Support for custom signature handlers
  • Sign with images, ink annotations, or entirely custom appearances

linkBuilt-in certificate parsing

We provide a built-in PKCS#12 parser, that enables signing using existing certificates with the '.pk12' or '.pfx' extensions. In addition to this, you may write your own certificate handler to parse other formats, and use the handler with the PDFNet library.

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Sign a PDF Document
To add an approval signature to a PDF Document with a blank form field prepared for a user to sign.

Certify a PDF Document
To add a certification signature to a PDF document without a form field.

Samples related to digital signatures.

APIs related to digital signatures.

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Built-in certificate parsing
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