PDF and PAdES signing and verification - SecureBlackbox®
PDFBlackbox package of SecureBlackbox supports digital signing of PDF documents, timestamping of signatures and validation of signatures and timestamps. Now you can publish your documents and sign them without the need for expensive Acrobat and its SDK.
Signing can be done using X.509 certificates or public/private key pairs according to PDF format specification. Resulting file remains in PDF format and can be opened using any PDF processor or viewer.
Timestamping of digital signatures is supported for both PDF signatures and when using PAdES standard. Supported PAdES profiles include PAdES-BES, PAdES-EPES, PAdES-LTV.