A COMPUTING DEVICE FOR ITERATIVE APPLICATION OF TABLE NETWORKS

摘要

A computing device (500) comprising an electronic storage (510) and an electronic processor (550) coupled to the storage, the storage storing a series of table networks (110, T1, T2), the processor being configured to compute an iterated function on a global data-input (121, w0) and a global state-input (121, s0) by applying table networks of the series of table networks, —a table network (112, 114, Ti) of the series being configured for a corresponding data-function (ƒi) and state-function (gi) and is configured to map a data-input (121, 122, si) to a data-output (122, 123, wi) according to the corresponding data-function (ƒi), and to simultaneously map a state-input (121, 122, si-1) to a state-output (122, 123, si) according to a state-function (gi), —the electronic processor being configured to iterate applying the series of table networks (T1, T2, T1, T2), a table network (T1) of the iteratively applied table networks to the global data-input (w0) and global state-input (s0), and a successive table network (T2, T1, T2) of said iteration to the data-output and state-output of a preceding table network of the series, the iterated application of the series determines a global data function (ƒ=ƒ2∘ƒ1∘ƒ2∘ƒ1) on the global data-input and determines a global state function (g=g2∘g1∘g2∘g1) on the global state-input, thus obtaining an intermediate data-output (winter=f(w0)) and an intermediate state-output (sinter=g(s0)), —the electronic storage is further storing a protecting table network (150) configured to cooperate with the series of table networks for countering modifications made to table networks of the series, the protecting table network being configured to receive as input: the intermediate state-output (126, sinter), and a global state-input (131, s0), the protecting table network being configured to verify that the global state-function (g) applied to the global state-input (s0) produces the intermediate state-output (sinter=g(s0)?).