key, the Ac deciphering and Ha hashing algorithm types to be used, the whole being stored in the table of envelopes Te at the instance pointed at during the Pu usage process.step 163, for the Fu further user, to decipher the Cp core part of the envelope by using the Kp public key and the received type of Ac encryption algorithm.step 164, for the Fu further user, to debundle the Cp core part of th