Abstract: The encrypted communication method and an encrypted communication system include a mobile terminal and an application server to execute two-way authentication and establish encrypted mobile communication between them, and then execute key derivation. A client host is started up, and reads and run client system software and client network application software stored in its Read-Only Memory (ROM). The client host and the application server retrieve the IP address of the counter-party respectively, and set IP address filtering rules respectively. The application server generates random numbers and keys, and sends the random numbers and the keys to the client host via the mobile terminal. The client host and the application server execute IP address filtering, two-way authentication, and key negotiation, and thereby establish encrypted network communication. The system and method ensure end-to-end security of network applications.

Abstract: An electricity-water co-generation system and method, the method comprising: step 1, heating saline water by spent steam, crystallizing a calcium magnesium compound in the saline water, then filtering the saline water; step 2, distilling the descaled water, and discharging strong saline water; step 3, converting the heat energy of the saturated steam into electric energy, dividing condensed water generated by releasing heat energy of the saturated steam into two parts, one part being output as fresh water; step 4, heating the other part of condensed water, and converting the heat energy of the overheated steam into electric energy, then feeding spent steam to heat the saline water and distilling the descaled water at a high temperature. The system comprises a descaling device, a mixed heat exchanger, a residual heat generator and a thermal power generation device, and the working process of the system is accordance with the method.

Abstract: An electricity-water co-generation system and method, the method comprising: step 1, heating saline water by spent steam, crystallizing a calcium magnesium compound in the saline water, then filtering the saline water; step 2, distilling the descaled water, and discharging strong saline water; step 3, converting the heat energy of the saturated steam into electric energy, dividing condensed water generated by releasing heat energy of the saturated steam into two parts, one part being output as fresh water; step 4, heating the other part of condensed water, and converting the heat energy of the overheated steam into electric energy, then feeding spent steam to heat the saline water and distilling the descaled water at a high temperature. The system comprises a descaling device, a mixed heat exchanger, a residual heat generator and a thermal power generation device, and the working process of the system is accordance with the method.

Abstract: Disclosed are a network security method and a network security system. The method comprises steps: a third-party server, an application server, a mobile terminal and a client host being started and running respective read-only software; an application IC card transmitting an input user password to the application server; the application server and the client host respectively starting data packet filtering; the mobile terminal executing encryption and decryption computations of encrypted Internet communication of the client host; the client host directly logging in the application server and transmitting a user command to the application server; the mobile terminal and/or the application IC card confirming the user command with the application server; and the mobile terminal and/or a third-party IC card generating a user command digital signature. The system comprises the application IC card, the mobile terminal, the client host, the application server, the third-party IC card and the third-party server.

Abstract: The encrypted communication method and an encrypted communication system include a mobile terminal and an application server to execute two-way authentication and establish encrypted mobile communication between them, and then execute key derivation. A client host is started up, and reads and run client system software and client network application software stored in its Read-Only Memory (ROM). The client host and the application server retrieve the IP address of the counter-party respectively, and set IP address filtering rules respectively. The application server generates random numbers and keys, and sends the random numbers and the keys to the client host via the mobile terminal. The client host and the application server execute IP address filtering, two-way authentication, and key negotiation, and thereby establish encrypted network communication. The system and method ensure end-to-end security of network applications.

Abstract: The electronic payment system and an electronic payment method based on remote communication or near field communication (NFC) includes a remote payment subsystem and an NFC payment subsystem, each of which includes a payment card, a payment terminal, a payment receiving card, and a payment receiving terminal. In the remote payment method, a bound remote payment account, a payment terminal, a payment card, and a payment password are used to execute remote payment. A bound remote payment receiving account, a payment receiving terminal, and a payment receiving card are used to execute remote payment receiving. In the NFC payment method, a bound NFC payment account, a payment terminal, and a payment card are used to execute NFC payment paying. A bound NFC payment receiving account, a payment receiving terminal, and a payment receiving card are used to execute NFC payment receiving.