Multi-step digital signature method and system

A step signature system and method for multiple signature device (11,13,15,17,19) is the cross local single signature; the signed is connected to a single individually confirmed base-plate the key confirmed. The signature device comprises a signature key sub-key, and responded from the authorization with multiple authorizations air (23,25,27,29,31), receive the local heating wire without a. A serial for capacitor, a first without a full is added local, the second signature device to the first incomplete signature and power operation. One of parallel capacitor; each signature device added local without a full, and multiple connected with a full multiples to form the terminal signature. Is distributed capability in multiple signature device added a local, multiple authorizations shaft added local not to a full the distribution authorization, wherein the safety system to obtain to strengthen.