With the PDFInfo WebService it is possible to validate PDF Signatures and generate validation reports.
The Aloaha Signature Validation Web Service is included in the setup of Aloaha sign. After the installation of sign the folder <program files>\wrocklage\WebService\Validator has to be configured in your webserver as Web Application Validator. Please note that this requires a Enterprise License!
A demo Web Service is installed on this Server. It is fully functional but limited to SHA-1 signatures. Licensed user can also validate SHA-256 signatures. The SOAP Syntax can be seen here. A service description is available here.
The sign setup also contains in <program files>\wrocklage\Validator\SampleApp a sample application (incl. source code) which uses the demo web service to validate PDF Signatures.
The advantage of Web Serivces is that the service logic is running on a remote server. Just download the sample application (incl. source code) below and start validating PDF Signatures without and PDF toolkit installed!