PDF Signer
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If you are developing a new application, consider migrating away from libusb-win32 v1.2.6.0. The standard practice today is to use (Microsoft's native user-mode USB driver framework) combined with the modern libusb-1.0 library. WinUSB does not require a filter architecture, is natively signed by Microsoft, and works out-of-the-box across all modern 64-bit versions of Windows without security warnings. Share public link

To ensure your development environment remains secure, download the package only from trusted open-source repositories. 1. SourceForge (Official Archive)

"Thousands of User are using DSC Signer Software every day to digitally sign Invoices, Purchase Orders, Contracts, Form 16A..."

HOW IT WORK

  • The software can be downloaded and installed on a PC. The user can procure a DSC-token of any make from any authorized vendor.
  • The DSC token needs to be registered the first time prior to use. Subsequently it has to be connected to the PC when signing.
  • User can sign either individual files or entire folders in one go. Users can select placement of signatures, passwords to optionally encrypt the signed PDFs, and a range of other features.
  • User can also setup the software to run in a ‘monitoring mode’, wherein any PDF file put into a designated folder gets signed. Signed files can also be stored in a centralized repository.
  • Multiple PDF files can be merged and digitally signed.
Software for exporters

Download Libusb-win64-devel-filter-1.2.6.0 |work| Jun 2026

If you are developing a new application, consider migrating away from libusb-win32 v1.2.6.0. The standard practice today is to use (Microsoft's native user-mode USB driver framework) combined with the modern libusb-1.0 library. WinUSB does not require a filter architecture, is natively signed by Microsoft, and works out-of-the-box across all modern 64-bit versions of Windows without security warnings. Share public link

To ensure your development environment remains secure, download the package only from trusted open-source repositories. 1. SourceForge (Official Archive)