Abstract: A block cipher algorithm based encryption processing method comprises the following steps: external key registration, external data registration, key expansion, data encryption conversion, internal data registration, and data iteration processing, which solves the problems of the prior ciphering method based on block cipher algorithm, such as low ciphering efficiency and high implementation cost, and efficiently reduces the resource consumption under the premise of keeping the high efficiency of the prior art, thereby reducing the implementation cost of the device. When the number of the conversion component is 1, the resource consumption is only about 60 percent of the prior art; and when the number of the conversion component is 2, the resource consumption is only about 70 percent of the prior art.

Abstract: The present invention discloses a multicast key negotiation method suitable for group calling system and a system thereof. The method includes that: a user terminal (UT) negotiates about a unicast key with a base station (BS), derives an information encryption key and an integrity verifying key according to the unicast key, and registers a service group identifier that the UT belongs to at the BS; the BS notifies the UT the multicast key of the service group that the UT needs to apply, constructs a multicast key notification packet, and sends it to the UT; after receiving the multicast key notification packet sent by the BS, the UT obtains the multicast key of the service group that the UT needs to apply by decrypting a service group key application list, constructs a multicast key confirmation packet, and sends it to the BS; the BS confirms that the multicast key of the UT service group is built successfully according to the multicast key confirmation packet sent by the UT.

Abstract: An entity bi-directional identification method and system based on a trustable third party thereof are provided. The system comprises a first entity, which is for sending a first message to a second entity, sending a third message to a third entity after receiving a second message sent by the second entity, verifying the fourth message after receiving a fourth message sent by the third entity, sending a fifth message to the second entity after the verification is finished; the second entity, which is for receiving the first message sent by the first entity, sending the second message to the first entity, verifying the fifth message after receiving the fifth message sent by the first entity; the third entity, which is for receiving the third message sent by the first entity, checking if the first entity and the second entity are legal, implementing the pretreatment according to the checking result, sending the first entity the fourth message after the treatment is finished.

Abstract: Disclosed is a trusted network connect system for enhancing the security, the system including an access requester of the system network that connects to a policy enforcement point in the manner of authentication protocol, and network-connects to the access authorizer via a network authorization transport protocol interface, an integrity evaluation interface and an integrity measurement interface, a policy enforcement point network-connects to the access authorizer via a policy enforcement interface, an access authorizer network-connects to the policy manager via a user authentication authorization interface, a platform evaluation authorization interface and the integrity measurement interface, and an access requester network-connects to a policy manager via the integrity measurement interface.

Abstract: A trusted network access control system based on ternary equal identification is provided. The system includes access requestor AR, access controller AC and policy manager PM as well as the protocol interface among them. The protocol interface between the AR and AC includes a trusted network transmission interface (IF-TNT) and IF-TNACCS interface between TNAC client and TNAC server. The protocol interface between the AC and PM includes an identification policy service interface IF-APS, evaluation policy service interface IF-EPS and a trust measurement interface IF-TM. The protocol interface between the AR and PM includes a trust measurement interface IF-TM.

Abstract: A method for accessing data safely, which is suitable for the electronic tag with low performance, is provided. The method comprises the following steps: when performing a data writing process, the first read-write device encrypts the message MSG and then writes the message in the electronic tag; when performing a data reading process, the second read-write device sends a data request packet to the electronic tag; the electronic tag sends a data response packet to the second read-write device according to the data request packet; the second read-write device sends a key request packet to a trusted third party; the trusted third party verifies the validity of the identity of the second read-write device according to the key request packet, and sends a key response packet to the second read-write device upon the verification is passed; the second read-write device obtains the plain text of the electronic tag message MSG according to the key response packet.

Abstract: A key management and node authentication method for a sensor network is disclosed. The method comprises the following steps of: 1) keys pre-distribution: before deploying the network, communication keys for establishing security connection between nodes are pre-distributed to all of nodes by a deployment server. 2) Keys establishment: after deploying the network, a pair key for the security connection is established between nodes, which includes the following steps of: 2.1) establishment of shared keys: the pair key is established between neighbor nodes in which the shared keys are existed; 2.2) path keys establishment: the pair key is established between the nodes in which there is no shared keys but there is a multi-hop security connection. 3) Node identity (ID) authentication: before formally communicating between nodes, the identity is authenticated so as to determine the legality and the validity of the identity of the other.

Abstract: A packet cipher algorithm based encryption processing device includes a key expand unit and an encryption unit. The key expand unit comprises a key expand unit data registration component and at least one key expand unit data conversion component. The encryption unit comprises an encryption unit data registration component and at least one encryption unit data conversion component, and the number of the encryption unit data conversion component is the same as that of the key expand unit data conversion component, and besides, they are one to one. A sub-key output of each key expand unit data conversion component connects the corresponding sub-key input of each encryption unit data conversion component to solve the technical problems that the encryption efficiency of the prior packet cipher algorithm based encryption processing device is low and the cost is high.

Abstract: An access authentication method applying to IBSS network involves the following steps of: 1) performing authentication role configuration for network entities; 2) authenticating an authentication entity and a request entity that have been performed the authentication role configuration via an authentication protocol; and 3) after finishing the authentication, the authentication entity and the request entity perform the key negotiation, wherein, the message integrity check field and protocol synchronization lock-in field are added in a key negotiation message. The access authentication method applying to IBSS network provided by the invention has the advantages of the better safeness and the higher execution efficiency.

Abstract: A method for managing network key and updating session key is provided. The step of the key management includes: constructing key request group, constructing key negotiation response group, and constructing key negotiation acknowledgement group. The step of multicasting key management method includes multicasting main key negotiation protocol and multicasting session key distribution protocol. The multicasting main key negotiation protocol comprises key updating informs group, constructing encryption key negotiation request group, constructing key negotiation response group and constructing key negotiation acknowledgement group. The multicasting session key distribution protocol comprises multicasting session key request and multicasting session key distribution.

Abstract: The present invention discloses a method and system for secret communication between nodes in a wired Local Area Network (LAN). The method of secret communication between nodes in the wired LAN includes the following steps: 1) a sharing key is established; 2) the route probe is exchanged; 3) the data communication is classified; 4) the secret communication is processed among the nodes. According to the different communication situations among the nodes, the method of secret communication between nodes provided in the present invention can process the classification and select an appropriate secret communication strategy; compared with per-hop encryption, the calculation load of the exchange equipment is reduced, and the transmission delay of data packets is shortened; compared with the method that inter-station keys are established in pairs of nodes in order to protect the communication secret, the key number is reduced, and the key management is simplified.

Abstract: A method and system for establishing a secure connection between stations are disclosed. The method includes that: 1) a switch device receives an inter-station key request packet sent by a first user terminal; 2) the switch device generates an inter-station key, constructs an inter-station key announcement packet and sends it to a second user terminal; 3) the switch device receives an inter-station key announcement response packet sent by the second user terminal; 4) the switch device constructs an inter-station key announcement response packet and sends it to the first user terminal; 5) the switch device receives an inter-station key announcement response packet sent by the first user terminal. The switch device establishes an inter-station key for the two stations which are connected to the switch device directly, by which the embodiments of the present invention ensure the confidentiality and integrality of user data between the stations.

Abstract: A method and a system for establishing a security connection between switch equipments are disclosed in the present invention. The system includes the first switch equipment and the second switch equipment; the first switch equipment sends the switch key negotiation activation packet and the switch key negotiation response packet to the second switch equipment; the second switch equipment sends the switch key negotiation request packet to the first switch equipment. The embodiments of the present invention provide a security policy for data security transmission between switch equipments by establishing shared switch key between each two switch equipments, thus guaranteeing the confidentiality of the data transmission process between switch equipments in the data link layer. The calculation burden of switch equipment and the delay of the data packets transmitted from the transmission end to the reception end can be reduced and the efficiency of network transmission can be improved.

Abstract: A trusted network connect method for enhancing security, it pre-prepares platform integrity information, sets an integrity verify demand. A network access requestor initiates an access request, a network access authority starts a process for bi-directional user authentication, begins to perform the triplex element peer authentication protocol with a user authentication service unit. After the success of the bi-directional user authentication, a TNC server and a TNC client perform bi-directional platform integrity evaluation. The network access requestor and the network access authority control ports according to their respective recommendations, implement the mutual access control of the access requestor and the access authority. The present invention solves the technical problems in the background technologies: the security is lower relatively, the access requestor may be unable to verify the validity of the AIK credential and the platform integrity evaluation is not parity.

Abstract: An encryption and decryption processing system for achieving SMS4 cryptographic procedure can be provided. The system includes a repeating encryption and decryption data processing device comprising a first constant array storing unit, a first data registering unit and a first data converting unit. The first constant array storing unit stores a first constant array and send it to N-data converting sub-units of the first data converting unit. The first data registering unit registers data, deliver the registered data to a first data converting sub-unit. The N-data converting sub-units perform a data conversion processing, and transmit the obtained conversion data to a next data converting sub-unit for subsequent processing until the data conversion processing processes are completed, a particular number of the completed processed being equal to a value of a data depth.

Abstract: A trusted network connect (TNC) method based on tri-element peer authentication is provided, which includes the following steps. Platform integrity information is prepared in advance. An integrity verification requirement is predefined. A network access requestor initiates an access request to a network access controller. The network access controller starts a mutual user authentication process, and performs a tri-element peer authentication protocol with a user authentication serving unit. After the mutual user authentication is successful, a TNC client, a TNC server, and a platform evaluation serving unit implement platform integrity evaluation by using a tri-element peer authentication method. The network access requestor and the network access controller control ports according to recommendations received respectively, so as to implement mutual access control between the access requestor and the access controller.

Abstract: A method and system for entity public key acquiring, certificate validation and authentication by introducing an online credible third party is disclosed. The method includes the following steps: 1) an entity B transmits a message 1 to an entity A; 2) the entity A transmits a message 2 to a credible third party TP after receiving the message 1; 3) the credible third party TP determines the response RepTA after receiving the message 2; 4) the credible third party TP returns a message 3 to the entity A; 5) the entity A returns a message 4 to the entity B after receiving the message 3; 6) the entity B receives the message 4; 7) the entity B transmits a message 5 to the entity A; 8) the entity A receives the message 5.

Abstract: A method for realizing trusted network management is provided. A trusted management agent resides on a managed host, and a trusted management system resides on a management host. The trusted management agent and the trusted management system are software modules, which are both based on a trusted computing platform and signed after being authenticated by a trusted third party of the trusted management agent and the trusted management system. Trusted platform modules of the managed host and the management host can perform integrity measurement, storage, and report for the trusted management agent and the trusted management system. Therefore, the managed host and the management host can ensure that the trusted management agent and the trusted management system are trustworthy. Then, the trusted management agent and the trusted management system execute a network management function, thus realizing the trusted network management.

Abstract: An access authentication method includes pre-establishing a security channel between the authentication server of the access point and the authentication server of the user terminal and performing the authentication process at user terminal and access point. The authentication process includes 1) the access point sending the authentication_activating message; 2) the user terminal sending the authentication server of user terminal request message; 3) the authentication server of the user terminal sending to the user terminal response message; and 4) completing the authentication.

Abstract: An entity authentication method by introducing an online third party includes the following steps: 1) an entity B sends a message 1 to an entity A; 2) the entity A sends a message 2 to a trusted third party TP after receiving the message 1; 3) the trusted third party TP checks the validity of the entity A after receiving the message 2; 4) the trusted third party TP returns a message 3 to the entity A after checking the validity of the entity A; 5) the entity A sends a message 4 to the entity B after receiving the message 3; 6) and the entity B performs validation after receiving the message 4. The online retrieval and authentication mechanism of the public key simplifies the operating condition of a protocol, and realizes validity identification of the network for the user through the authentication of the entity B to the entity A.