PDF Document Signer

DeskSignerPDF is a stand alone solution (desktop) that enables signing documents on PDF (Portable Document Format) format, separately or in groups. Documents signed by DeskSignerPDF can easily be viewed and checked through Adobe® Reader.

Functionalities

	Signature / Co-signature DeskSignerPDF allows signing files on PDF format, separately or in batch mode. Therefore, all that is needed is an X.509v3 digital certificate, ICP-Brasil or not, installed in the Windows® repository, on disk (HD, floppy, CD, DVD or other removable media) or on external devices such as tokens and smart cards. To sign a PDF document, it is not necessary to have installed in your computer the Adobe® Acrobat. At the moment of each signature, DeskSignerPDF validates the digital certificate used, checking whether it has been expired or revoked. To do so, DeskSignerPDF uses the List of Revoked Certificates (CRL) of the Certificate Authority (CA) that issued the respective digital certificate. Co-signing is allowed on files that were previously signed and there is no limit to the quantity of signatures.
	Operations in Batch Mode DeskSignerPDF allows the signature of files to be done in batch mode. A batch can be assembled from a set of files individually selected or can be represented by a directory in a disk (local or remote).
	File Verification Documents signed by DeskSignerPDF can be validated and visualized directly by Adobe® Reader, that is, it is not necessary to purchase any special software for this functionality. Adobe® Reader can be downloaded for free through the Internet, directly from the Adobe® website. When opening a PDF document signed by DeskSignerPDF, Adobe® Reader automatically identifies that the document has been signed, allowing the visualization of all the elements of each signature present in the document.

Friendly Interface

DeskSignerPDF allows the access to signing PDF files and configuring functions, directly from Windows® (Windows® Explorer) shell or through its desktop interface. DeskSignerPDF is available in Portuguese, English and Spanish.

Legal Validity

In Brazil, the legal validity of DeskSignerPDF is based on the provisory measure 2,200-2, from August 24, 2001, that says that all document in electronic format has its authenticity, integrity and legal validity assured, as long as digital certificates are used.

Minimum Requirements Windows® XP, Windows® Vista, Windows® 2000 or Windows® 2003 Microsoft® .Net Framework 1.1. or 2.0. PDF Document version 1.3 (Acrobat 4.x) or more recent Adobe® Reader 6.x. or more recent Internet connection (only for software registration and updating of Certificate Revocation Lists - CRL) Repositories of Certificates CryptoAPI (Browsers, Smart cards, HSMs and compatible tokens) Files on disk in PKCS#12 format (.PFX) X.509v3 digital certificate

Interoperability

PDF documents signed and/or co-signed by DeskSignerPDF are maintained on PDF format with signatures on PKCS#7 format, auto-contained in the document. This procedure assures 100% interoperability through Adobe® Reader and the main signers and browsers that support this signature/file format. DeskSignerPDF is compatible with all X.509v3 digital certificates, including e-CPF and e-CNPJ, official digital documents of the Brazilian Secretariat of Federal Revenue (SRF).

Image Resources

DeskSignerPDF incorporates a series of resources so it is possible to configure how the signatures should be shown in the document. A digital signature in a PDF document can be graphically represented by an image, a text or both. It is possible to determine the size of the image, its position in the document and in which pages of the document it should be inserted. DeskSignerPDF also allows you to select the image that will be used to graphically represent the signature. This image can be obtained from any image file or from a device that captures image, installed in you computer, compatible with driver Twain. DeskSignerPDF also makes available a series of resources to handle these images.