This wrapper aims on prevention of microarchitectural attacks like Meltdown and Spectre. This code was originally a part of ChromeZero.

Known bug: The subarray() method always ruturns the full array.

The wrappers support the following behaviour:

• Offset: The content of the buffer is shifted by a fix offset. This is a faster method but can be removed.
• Random mapping: All items are mapped randomly. This is a slower method but more reliable.

See also: https://www.fit.vut.cz/study/thesis/22374/?year=0&sup=Pol%C4%8D%C3%A1k, especially Sect. 5.1