Metadata signature is a convenient way to sign documents using metadata properties. In GroupDocs.Signature for .NET 18.9, we introduced the feature of signing the Pdf documents using various metadata properties including:
Author CreateDate MetadataDate CreatorTool ModifyDate Producer Entry Keywords Title Subject Description Creator You can set all or some of the above-mentioned properties while signing the documents. Since these are the built-in properties, you can only add/update their value.
There could be a situation when the built-in metadata properties may not fulfill your requirements and you may want to use your own set of properties to add metadata signatures....introduced the feature of signing the PDF documents using various metadata...added the feature of signing PDF documents using custom metadata...