Mode Property
Specifies the symmetric cipher mode of operation.
Syntax
symmetriccrypto.getMode([callback]) symmetriccrypto.setMode( mode, [callback])
Possible Values
0 (scmDefault), 1 (scmECB), 2 (scmCBC), 3 (scmCTR), 4 (scmCFB8), 5 (scmGCM), 6 (scmCCM), 7 (scmPoly1305)
Default Value
0
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 the getMode([callback]) method is defined as:
function(err, data){ }
'err' is the error that occurred. If there was no error, then 'err' is 'null'.
'data' is the value returned by the method.
The callback for the setMode([callback]) 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 property to specify the mode of operation as required by your environment. The defaultsetting is CBC.
scmDefault | 0 | The default mode in current circumstances. |
scmECB | 1 | ECB (electronic code book) mode. This is insecure, unless you know how to use it right. |
scmCBC | 2 | CBC (cipher block chaining mode) |
scmCTR | 3 | Counter mode |
scmCFB8 | 4 | Cipher feedback mode |
scmGCM | 5 | Galois counter mode |
scmCCM | 6 | CCM mode |
Data Type
Integer