Digital Signature Software

Everything you need to sign your files

Help Center

PDF Signer Server

PDF Signer Server User Manual

Time Stamping

PDF Security

Validating digital signatures in Adobe
Using SHA-512 algorithm for digital signatures
Verifying PDF digital signatures using PDFSignDLL SDK (for developers)
Adding PDF encryption using PDFSignDll SDK (for developers)

Root Certificates

Secure Soft Private CA Root Certificate
Installing Adobe Security Policy (.fdf file)
Installing Secure Soft Private CA Root (run as Administrator)

Save a tree! Use digital signatures.