See: Description
| Interface | Description | 
|---|---|
| SignatureInterface | Providing an interface for accessing necessary functions for signing a pdf document. | 
| Class | Description | 
|---|---|
| PDPropBuild | This represents a pdf signature build dictionary as specified in
 
 http://partners.adobe.com/public/developer/en/acrobat/Acrobat_Signature_BuildDict.pdf
 The signature build properties dictionary provides signature properties for the software
 application that was used to create the signature. | 
| PDPropBuildDataDict | This represents the general property dictionaries from the build property dictionary. | 
| PDSeedValue | This represents a pdf signature seed value dictionary. | 
| PDSeedValueMDP | This MDP dictionary is a part of the seed value dictionary and define
 if a author signature or a certification signature should be use. | 
| PDSeedValueTimeStamp | If exist, it describe where the signature handler can request a rfc3161
 timestamp and if it is a must have for the signature. | 
| PDSignature | This represents a digital signature that can be attached to a document. | 
| SignatureOptions | 
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