Search for Digital e-signatures

GroupDocs.Signature offers an ability to find Digital signatures that are applied to document and returns its digital signature certificate.
Please follow these steps to search for Digital signatures within the document:

• Create new instance of Signature class and pass source document path as a constructor parameter.

• Instantiate the DigitalSearchOptions object according to your requirements and specify search options

• Call search method of Signature class instance and pass DigitalSearchOptions to it.

This example shows how to search for Digital signature in the document and analyze digital signature certificate.

Signature signature = new Signature("spreadsheet.xlsx");
DigitalSearchOptions options = new DigitalSearchOptions();

// search for signatures in document
List<DigitalSignature> signatures = signature.search(DigitalSignature.class, options);
System.out.print("\nSource document contains following signatures.");
for (DigitalSignature digitalSignature : signatures)
{
    System.out.print("Digital signature found from "+digitalSignature.getSignTime()+" with validation flag "+digitalSignature.isValid()+". Certificate SN "+ digitalSignature.getCertificate().getType());
}

More resources

Advanced Usage Topics

To learn more about document eSign features, please refer to the advanced usage section.

GitHub Examples 

You may easily run the code above and see the feature in action in our GitHub examples:

• GroupDocs.Signature for .NET examples, plugins, and showcase
• GroupDocs.Signature for Java examples, plugins, and showcase
• Document Signature for .NET MVC UI Example
• Document Signature for .NET App WebForms UI Example
• Document Signature for Java App Dropwizard UI Example
• Document Signature for Java Spring UI Example

Free Online App 

Along with full-featured .NET library we provide simple, but powerful free Apps.
You are welcome to eSign PDF, Word, Excel, PowerPoint documents with free to use online GroupDocs Signature App.