SecureBlackbox 2020 Node.js Edition

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HashFile Method

Calculates a message digest over data contained in a file.

Syntax

hashfunction.hashFile(sourceFile, [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 and returns a message digest over the data contained in file SourceFile. This is a quick way to calculate a hash over a file content in one go.

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SecureBlackbox 2020 Node.js Edition - Version 20.0 [Build 8165]