With the development of new technologies and applications, such as the Internet of Things, smart cities, 5G, and edge computing, traditional Internet Protocol-based (IP-based) networks have been exposed as having many problems. Information-Centric Networking (ICN), Named Data Networking (NDN), and Content-Centric Networking (CCN) are therefore proposed as an alternative for future networks. However, unlike IP-based networks, CCN routing is non-deterministic and difficult to optimize due to frequent in-network caching replacement. This paper presents a novel probe-based routing algorithm that explores real-time in-network caching to ensure the routing table storing the optimal paths to the nearest content provider is up to date. Effective probe-selections, Pending Interest Table (PIT) probe, and Forwarding Information Base (FIB) probe are discussed and analyzed by simulation with different performance measurements. Compared with the basic CCN, in terms of qualitative analysis, the additional computational overhead of our approach is O(NCS + Nrt + NFIB ∗ NSPT) and O(NFIB) on processing interest packets and data packets, respectively. However, in terms of quantitative analysis, our approach reduces the number of timeout interests by 6% and the average response time by 0.6 s. Furthermore, although basic CCN and our approach belong to the same Quality of Service (QoS) category, our approach outperforms basic CCN in terms of real values. Additionally, our probe-based approach performs better than RECIF+PIF and EEGPR. Owing to speedup FIB updating by probes, our approach provides more reliable interest packet routing when accounting for router failures. In summary, the results demonstrate that compared to basic CCN, our probe-based routing approach raises FIB accuracy and reduces network congestion and response time, resulting in efficient routing. 

/pdf/an-efficient-probe-based-routing-for-content-centric-21eoijvb.pdf

An Efficient Probe-Based Routing for Content-Centric Networking

With the development of new technologies and applications, such as Internet of Things, smart cities, 5G and edge computing, traditional IP-based networks have exposed many problems. Information-Centric Networking (ICN), Named Data Networking (NDN) and Content-Centric Networking (CCN) are therefore proposed as an alternative for future network. However, unlike IP-based networks, the routing of CCN is not deterministic and hard to be optimized due to the frequent replacement of in-network caching. This paper presents a novel probe-based routing algorithm that real-time explores in-network caching to ensure the routing table storing the optimal paths to the nearest content provider up to date. Effective probe-selections, PIT probe and FIB probe are discussed and analyzed by simulation with different performance measurements. Compared with the basic CCN, in the aspect of qualitative analysis, the additional computational overhead of our approach are O(NCS + Nrt + NFIB) and O(NFIB) on processing interest packets and data packets, respectively. However, in the aspect of quantitative analysis, our approach reduces the number of timeout interest by 6% and reduces the average response time by 0.6 seconds. In addition, in the aspect of QoS, although basic CCN and our approach are in the same QoS category, our approach performs better in terms of real values. In summary, the results demonstrate that compared to basic CCN, our probe-based routing approach raises FIB accuracy and reduces network congestion and response time that achieves efficient routing.

An Efficient Probe-based Routing for Content-Centric Networking

The invention discloses a motor controller convenient for heat dissipation. The motor controller comprises a motor controller body, an operation threaded rod, a first bottom plate, a second bottom plate and a working bolt, wherein the operation threaded rod is installed on the side of the motor controller body, a stabilizing plate is attached to a track groove, the track groove is formed in the side of the motor controller body, the bottom of a lower heat dissipation positioning block is provided with supporting rods, the bottom ends of the supporting rods are respectively connected with the first bottom plate and the second bottom plate, a horizontal inserting plate is fixed to the side of the first bottom plate, the horizontal inserting plate is connected with the second bottom plate, and the second bottom plate is provided with a working bolt. According to the motor controller convenient for heat dissipation, a novel structural design is adopted, the device can effectively dissipateheat at a metal interface, carry out isolation and positioning on an external wire harness, and adjust the overall height of the motor controller, so that all surfaces of the motor controller can bein full contact with air, and the heat dissipation efficiency is improved.

Motor controller convenient for heat dissipation

Addressing the challenge of untraceable malicious activities due to excessive anonymity in ring signature, we propose a new SM2-based ring signature scheme with revocability and anonymity (SMRSRA). Our scheme innovates by integrating a third-party-generated signer identity tag, a pivotal element in generating both signature values and a revocation tag within the SMRSRA. A key feature of our scheme is its revocation mechanism, which permits the third party to utilize the revocation tag, activating the anonymity revocation algorithm to reveal the signer’s identity. Furthermore, our scheme allows members to verify the third party’s actions for any malicious intent using the revocable anonymity tag. Experimental findings demonstrate that the time efficiency for signature generation and revocation in this scheme scales linearly with the number of ring members, ensuring its efficiency in scenarios involving numerous participants.

A new SM2-based ring signature scheme with revocability and anonymity

A Secure and Efficient Blockchain-Powered Scheme for e-Invoicing Application

As a new generation of network architecture with subversive changes to traditional IP networks, Content Centric Networks (CCN) has attracted widespread attention from domestic and foreign scholars for its efficient content distribution, multi-path and secure routing features. The design atchitecture of CCN network has many advantages. However, it is also easily used illegally, which brings certain sectrity problems. For example, objectified network resources which include requesters, publishers, content, and node routes, are faced with many security threats, such as privacy attribute disclosure, privacy detection, content information disclosure, and spoofing and denial of service attacks. A node routing security scheme based on dynamic reputation value is proposed for the security problem of node routing. It is convenient for detecting node routing attacks and defending in time. And it could provide security for the Content Centric Networks node routing without affecting the node routing advantages and normal user requests.

Research on Node Routing Security Scheme Based on Dynamic Reputation Value in Content Centric Networks

Design and implementation of a cloud encryption transmission scheme supporting integrity verification

Ring signature is an anonymous signature that allows a person to sign a message on behalf of a self-formed group while concealing the identification of the signer. However, due to its anonymity and unlinkability, malicious or irresponsible signers can easily attack the signature without any responsibility in some scenarios. In this paper, we propose a novel revocable one-time ring signature (roRS) scheme from bilinear pairings, which introduces linkability and mandatory revocability into ring signature. In particular, linkability can resist the double-signing attack and mandatory revocability guarantees that a revocation authority can identify the actual signer when a suspicious signer appears in any situation. The computational complexity of pairing computations is constant, and the time of the revocation phase is more efficient than previous schemes. Furthermore, our scheme is provable secure in the random oracle model, using DL, CDH, and DBDH assumptions.

/pdf/revocable-one-time-ring-signature-from-pairings-1se009u0.pdf

Revocable One-Time Ring Signature from Pairings

The utility model provides a switch with a network abnormity automatic alarm function. The device comprises a shell, the shell is provided with a power interface and a communication port, the communication port is connected with a control module through a voltage transformation module, the control module is connected with a signal indicator lamp, and the power interface is connected with the control module through an intelligent circuit breaker and a Hall current sensor; a fixing frame is arranged on one side of the shell, a sliding rail is arranged on the fixing frame, a clamping device is arranged on the sliding rail in a sliding mode, and the clamping device is matched with the communication port. A warning lamp is arranged on one side of the signal indicating lamp, and a voice alarm is arranged on the other side of the warning lamp; the control panel is connected with the control module, the intelligent circuit breaker, the Hall current sensor, the heat dissipation box, the warning lamp and the voice alarm. The switch is compact in overall design, automatic heat dissipation and cooling are performed in the switch, electrical fire disasters in the switch are avoided, and the overall operation safety of the switch is greatly improved.

Switch with network anomaly automatic alarm function

Due to the complexity of the battlefield environment at sea and the diversity of attack forms, a single fixed maintenance strategy cannot cope with the varied attack modes of the enemy at all times after the ship system is attacked. Aiming at the marine battle environment, this paper simulates the multi-wave attack chain and ship defence system, so that the ship equipment node has different wartime importance according to different combat environment, combined with the explosion and damage model, interception and confrontation model. The repair sequence of damaged nodes under multiple constraints was abstracted to the path planning problem similar to MSTP, and an Attack Defence Recovery Strategy (ADRS) was proposed by combining adaptive genetic algorithm with the wartime importance of equipment nodes. Experiments simulation has been taken under the same constraints and multi-wave enemy attack with different recovery strategy system of confrontation and resilience recovery. The results show the system resilience recovery based on ADRS is effective under the waves of attacks, reduces system damage, improves the system robustness, and especially greatly increases under relatively severer damage.

Optimized ship resilience under multi-wave attack based on genetic algorithm

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