1. GroupDocs Documentation
    2. /
    3. GroupDocs.Signature Product Family
    4. /
    5. GroupDocs.Signature for Java
    6. /
    7. Developer Guide
    8. /
    9. Advanced usage
    10. /
    11. Signing
    12. /
    13. Sign document with Digital signature - advanced

    Sign document with Digital signature - advanced

    GroupDocs.Signature provides DigitalSignOptions class to specify different amount of settings for Digital signature

    Here are the steps to add Digital signature into document with GroupDocs.Signature:

    • Create new instance of Signature class and pass source document path as a constructor parameter.
    • Instantiate the DigitalSignOptions object with required certificate and its password.
    • Call sign method of  Signature class instance and pass DigitalSignOptions to it.
    • Analyze SignResult result to check newly created signatures if needed.

    This example shows how to sign PDF with Digital signature certificate and analyze SignResult

    Signature signature = new Signature("sample.pdf"); 
DigitalSignOptions options = new DigitalSignOptions("certificate.pfx");
 
// certifiate password
options.setPassword("1234567890");
// digital certificate details
options.setReason("Sign");
options.setContact("JohnSmith");
options.setLocation("Office1");
 
// image as digital certificate appearance on document pages
options.setImageFilePath("sample.jpg");
//
options.setAllPages(true);
options.setWidth(80);
options.setHeight(60);
options.setVerticalAlignment(VerticalAlignment.Bottom);
options.setHorizontalAlignment(HorizontalAlignment.Right);
Padding padding = new Padding();
padding.setBottom(10);
padding.setRight(10);
options.setMargin(padding);
 
SignResult signResult = signature.sign("signed.pdf", options);
// analyzing result
System.out.print("List of newly created signatures:");
int number = 1;
for(BaseSignature temp : signResult.getSucceeded())
{
    System.out.print("Signature #"+ number++ +": Type: "+temp.getSignatureType()+" Id:"+temp.getSignatureId()+
            ",Location: "+temp.getLeft()+"x"+temp.getTop()+". Size: "+temp.getWidth()+"x"+temp.getHeight());
}

    More resources

    GitHub Examples 

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

    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.

    © Groupdocs 2001-2023. All Rights Reserved.