Signed PDF

Secure the Integrity and Authenticity of your PDFs

The increase in malware and phishing attacks being done every day is resulting in many costly cybersecurity breaches and fraudulent activity. It is getting to the point that many people do not trust emails and files sent to them from outside their organization. This threatens the usefulness of the digital delivery systems that have been put in place by organizations all over the world.

With CrawfordTech's Signed PDF, organizations creating communications can automatically apply a digital signature to PDF output ensuring recipients of the files that the content of each individual document is verified to be accurate and originated from a known and trusted source.




  • Provides assurance to recipient that the information is from a trusted source.
  • Secures the integrity of individual PDFs by preventing unauthorized modifications.
  • Utilizes industry standard Digital Certificates to provide best in class protection.
  • Saves time and money defending against fraudulent claims.
  • Provides additional layer of protection beyond standard password security.

How Signed PDF works

Signed PDF utilizes industry standard digital certificates, providing evidence of the documents integrity and authenticity, guaranteeing that the information customers receive is accurate and from a known and trusted source.

When a PDF is created or converted from another format, the contents are read and used to automatically calculate a hash, employing cryptographic hash algorithms.  The hash is stored, along with the customer’s public key, within the PDF as the signature. When opened, the contents of the PDF are validated by calculating the document’s hash, using the embedded public key, and comparing it to the hash within the digital signature.

The digital signature verifies that the contents of the PDF have not been modified, and that document metadata such as date created, author, title and other content has not been changed. It can be used on its own, or in conjunction with standard password security on the PDF file. And if the PDF has been tampered with, the digital signature will become invalid, and the recipient will receive an alert when they view the file.

Signed PDF, a component of the Crawford Technologies DTE platform, integrates into our document re-engineering and workflow automation solutions, Operations Express and PRO Conductor to bring security and speed to critical communications processing and delivery. Signed PDF easily fits into any system architecture and works with common print formats, including AFP, PDF, PostScript, PCL, Xerox Metacode, and Xerox LCDS/DJDE.

The application runs on all major platforms including Linux, Windows, AIX, z/OS and Solaris. It can be easily integrated into your systems by leveraging our enPower APIs, PRO Conductor, Sunrise or  AccessibilityNow®Gateway. Flexible deployment options are available including our SaaS solution, PRO DocNow, CrawfordTech’s secure Document Re-engineering solution in the cloud.

White Paper

Document Security in the Digital World

Although PDF has become the industry standard for electronic communications, document integrity and security can be a challenge. In this white paper, we discuss what can be done to enhance the security of digital documents.

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