permissive mode and booleDS, c and rep

[tombisho]

I am currently revisiting some of the disclosure attacks and was wondering about the functions booleDS, c and rep which don't seem to be included in the list to be blocked with the introduction of permissive mode.

booleDS can be used for the same purpose as subsetting because you can perform a logical test (e.g. on an index) to mark a single row with a 1 and the rest with zeros. Then you can multiply, take the mean etc to recover the value.

the c and rep functions are normally natively available via ds.assign:

ds.assign(toAssign = "c(D$LAB_TSC,D$LAB_TSC)", newobj = "fact1")

ds.assign(toAssign = "c(1,rep(0,4127))", newobj = "fact1")

These allow the same tricks as cDS and repDS

[StuartWheater]

I have a version, which is currently being tested, which has the "c", "cbind" and "rep" aliases removed.
I agree that "booleDS", which was in your comments on the proposal, should be added to list to "non-permissive" methods which are blocked. But I would like to see if there is a better way that just "blocking".

Stuart

[tombisho]

This part of the code could be activated:

https://github.com/tombisho/dsBase/blob/master/R/BooleDS.R#L120

[tombisho]

and if you don't have the ability to create an index or vector of 0s and 1s, then you don't have much to filter on