HashStream Method
Calculates a message digest over data contained in a stream.
Syntax
hashfunction.hashStream([callback])
Callback
The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).
The callback for this method is defined as:
function(err, buffer){ }
'err' is the error that occurred. If there was no error, then 'err' is 'null'.
'buffer' is the value returned by the method.
'err' has 2 properties which hold detailed information:
err.code err.message
Remarks
This method calculates a message digest over the data contained in InputStream. Thisis a quick way of calculating a message data over a stream content in one go.