DecryptFile Method
Decrypts a file.
Syntax
symmetriccrypto.decryptFile(sourceFile, destFile, [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){ }
'err' is the error that occurred. If there was no error, then 'err' is 'null'.
'err' has 2 properties which hold detailed information:
err.code err.message
Remarks
Use this method to decrypt an encrypted file and save the decrypted data to another file.
Specify the decryption key in Key property before calling this method.