signature verifying

Signature Verifying can be applied into the field of E-commerce vividly to improve the efficiency and security. We can hold a simple instance to illuminate the problem.
Now we assume the originator creates an Administrator Agent A who has the master key P
¢Ù The signature verifier B(for example, an executing host) will verify the validity of (M) with the public key e of CA;
¢Ú B computes =H( ) for all the mobile agents that belong to MMAS-OA, and then computes the value h= (mod N);
([Notice]: P S( ) S(P), S( ) or S( ) are invivid signatures, S denotes Signature Function).
the Administrator Agent has a only Maste...