$\forall$$T$:(Id$\rightarrow$Type), ${\it tab}$:secret{-}table($T$), ${\it keyv}$:(($\mathbb{N}$+Atom1)$\times$data($T$)), $n$:$\mathbb{N}$$_{\mbox{\scriptsize $<\parallel$${\it tab}$$\parallel$ }}$.
\\[0ex]st{-}atom(encrypt(${\it tab}$;${\it keyv}$);$n$) $=$ st{-}atom(${\it tab}$;$n$) $\in$ Atom1