SignatureProvider.HashStream(Object, Object) Method
Definition
Important
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Allows a signature provider add-in to create a hash value for the document that you can use to determine if the document contents were tampered with after digital signing.
public:
Array ^ HashStream(System::Object ^ QueryContinue, System::Object ^ Stream);public Array HashStream (object QueryContinue, object Stream);abstract member HashStream : obj * obj -> ArrayPublic Function HashStream (QueryContinue As Object, Stream As Object) As ArrayParameters
- QueryContinue
- Object
Provides a way to query the host application for permission to continue the hashing process.
- Stream
- Object
Contains the data stream.
Returns
Array
Remarks
The SignatureProvider object is used exclusively in custom signature provider add-ins. This method is called once per signature data stream in a document. The return value is an array of bytes representing the hash value computed using the hash algorithm.