Automatically sign pdf documents

[Catalin]

Hi,

As far as I understand, signing a document it's a manual process. Can be done automatically? (without user interaction).
We have this scenario where in a web application users can create pdf documents. I wander if it's possible when document is created to be automatically signed with user credentials?

Best regards,
Catalin

[Aorner]

Yes, it can using SAPI. SAPI is a simple to use API employed as a wrapper over the standard Cryptographic APIs (CAPI and PKCS#11). The SAPI SDK provides a simple option for integrating CoSign with non-PKI-aware applications.

Standard APIs and ARX's Signature API (SAPI) MS CAPI, PKCS#11, and JCA are standard cryptographic APIs that can be used for integrating digital signatures within applications. These APIs are all supported out-of-the-box by CoSign. SAPI, or Signature API, is a signature-centric set of functions programmers can use to easily enhance their applications with digital and graphical signatures, without requiring previous knowledge and experience with public-key cryptography. Standard APIs can be used to enhance an application with digital signature support, but SAPI offers a simple and more dedicated digital signature approach. In addition to the simplicity, SAPI offers added functionality such as support for graphical signatures; that is, the ability to capture and add the graphical image of the hand-written signature (or scanned images including seals, logos, etc.) into the application. SAPI Functionality Sign/validate signatures within supported file types such as PDF, TIF, and Office 2007 files Sign/validate application data Enumerate/manage certificates Manage graphical signatures Manage users (Add, Delete, etc.)... And more … SAPI Language Support SAPI can be called through: C DLL COM Object Web Services Supported languages: C/C++ VB Delphi .NET JavaScript All languages and platforms that run SOAP clients such as Java, .NET, PHP, Unix platforms, and more.