# SetMasterKeyAccessor Method
Sets the master key.
## Definition
**Namespace:** CapyKit.Helpers
**Assembly:** CapyKit (in CapyKit.dll) Version: 1.0.4
**C#**
``` C#
public void SetMasterKeyAccessor(
Func accessor
)
```
**F#**
``` F#
member SetMasterKeyAccessor :
accessor : Func -> unit
```
#### Parameters
- Func(Byte[])
- The accessor function.
## See Also
#### Reference
KeyHelper Class
CapyKit.Helpers Namespace