Abstract. While a rigorous information flow analysis is a key step in obtaining meaningful end-to-end confidentiality guarantees, one must also permit possibilities for declassification. Sabelfeld and Sands categorized the existing approaches to controlling declassification in their overview along four dimensions and according to four prudent principles [16] . In this article, we propose three novel security conditions for controlling the dimensions where and what, and we explain why these conditions constitute improvements over prior approaches. Moreover, we present a type-based security analysis and, as another novelty, prove a soundness result that considers more than one dimension of declassification.
W HERE, W HAT 1 and W HAT 2 In REF , Mantel and Reinhard propose three security conditions for controlling the where and what dimensions of declassification.
Controlling the what and where of declassification in language-based security
In Proc. European Symp. on Programming, volume 4421 of LNCS
Computer Science