This is a tool that lets you digitally sign PDF documents and verify and view them.
DigiSigner is a PDF viewer and document signing tool. It is able to create Adobe Reader compliant digital signatures. Adobe readers can then be used to verify these signatures. DigiSigner creates digital signatures using standard X.509 certificates. The cryptographic signature is a better protection than just embedding an image of the signature. DigiSigner is a PDF viewer first. It lets you open and inspect the document you are going to sign. You can create invisible as well as a professional looking visible signature with DigiSigner. The tool will let you use the mouse to place the signature at a convenient place in the document. The tool will let you design your own signature appearances and you can create as many of them as you want.
DigiSigner protects your PDF files from tampering and ensures your identity as the signer. That raises trust with your partners and collaborators. Standard Adobe Reader tool will let you view the signatures as well as get them verified. Visible signatures created with other applications can be also opened and verified in the application. Verification of the digital signature ensures that your document was not changed or damaged. You can use standard smartcards and USB tokens, PKCS#11 tokens, to digitally sign PDFs. It also supports standard PFX file key stores such as PKCS#12. The tool also recognizes and shows you the Windows key store certificates. Visible signatures are easily created with the tools inside the program. This then is one handy tool that caters to the need of written signatures as well as invisible digital signatures. The interface makes it easy to work with, but you would probably need a bit of familiarization time.