PrimeKey is the originator, main contributor and administrator of the SignServer project at SourceForge.net.

SignServer is an enterprise application that provides functionality for server side cryptographic document operations, commonly digital signatures. Using a signature server, signature keys are kept secure under strict control.
After receiveing a document (pdf, xml, ooxml, mrtd, odf, code) SignServer will either sign or verify the document and then return the signed copy, or the verifying results, back to the orderer. Fully featured, with proven industrial strength, SignServer is used world-wide in mission critical applications.
You may choose to have the complete planning, installation and maintenance done internally by your organization. Or you may prefer to get support, maintenance and training - partly or entirely - from PrimeKey, or one of our SignServer certified partners.