Functional overview
Digital signature fields (“DigSig” fields, short for “digital signature”) form part of the mechanism defined by Adobe® for digitally signing PDF documents on the basis of certificates. These digital signature fields are also referred to as Adobe-compliant signature fields.
With the help of this component, it is possible to digitally sign PDF documents and securely store important additional biometric information about the respective signatory in the document.
When a signature is captured, a new revision of the PDF document is created and digitally signed so that the integrity and authenticity of the document can be verified in any DigSig-compatible PDF viewer (for example, Adobe Acrobat® or Adobe® Reader).
All the data captured for the signature digitization, including the signature’s biometric data, is encrypted using RSA encryption and stored securely in the invisible area of the respective DigSig field. More information about the data used can be found in the section data and data formats.
To position signature fields, please refer to the notes on the coordinate system used.
Please also note the general information on working with the components!
For introductory and detailed information on the topic of digital signatures in PDF documents, the documentation "signotec procedure description for e-signatures and encryption" is available separately. This can be requested from signotec GmbH.
Topics covered in the documentation
System requirements, declaration, licence
All functions for editing signature fields
Overview of deprecated methods and their alternatives
More detailed explanation of the input and output data used in the methods