1. A method for digital immunity comprising: identifying a call graph of an executable entity; mapping nodes of the call graph to a cipher table of obscured information, each node based on invariants in the executable entity, the cipher table maintaining associations between the invariants and the obscured information; extracting, from the cipher table, ordered portions of the obscured information, the ordered portions having a sequence based on the ordering of the invariants; and detecting that the obscured information matches a predetermined ordering corresponding to desired operation.