Enhance the information security of Internet of vehicles with bl

1. Chongqing jinwowo analysis: the information security advantages of blockchain technology are as follows:

first, through the application in the field of digital currency, blockchain provides a solution for the flow of capital flow (or capital flow) information on the Internet

secondly, blockchain solves the problem of right confirmation in the transaction process through encryption and reference of distributed ledger

thirdly, blockchain determines the exchange of digital assets through the technology of consensus mechanism.

2. Private key~

3. The analysis of Chongqing jinwowo network is as follows:
each node on the blockchain can verify the integrity and authenticity of the account book to ensure that all transaction information is not tampered with, true and effective
every node on the blockchain keeps copies of all transaction information. When the number of data and participants on the blockchain is very large, the cost of modifying information will be very high. At least 51% of the computing power of the whole network is needed to modify information, and the modification cost may far exceed the expected revenue
when the information of some nodes is maliciously tampered with, other nodes on the blockchain will find the information that has not formed a "consensus" in a short time and maintain and update it.

4. In the traditional Internet era, the architecture of trust system relies on long-term accumulation and a lot of cost. The birth of jinwowo network technology blockchain + big data technology builds a lowest cost trust mode with code. Blockchain only needs to execute code to achieve real, whole process and tamperable data records, and these big data are the most valuable assets of the Internet era.

5. Improving network security
blockchain is a decentralized and distributed electronic classified accounting method based on the model of providing absolute security and trust. Using encryption technology, transactions are recorded chronologically and publicly, and each block has a timestamp and a link to the previous block. Importantly, these digital "blocks" can only be updated through the consensus of all participants, and data interception, modification and deletion are almost impossible.

6. In view of the security characteristics and shortcomings of the existing blockchain technology, we need to build a security system around the physical, data, application system, encryption, risk control and other aspects to improve the security performance of the blockchain system as a whole
1. Physical security
the network and host running the blockchain system should be in a protected environment. According to the regulatory requirements of specific business, the protection measures can be used to protect the physical network and host by means of VPN, firewall, physical isolation, etc
2. Data security
in principle, the data exchange between nodes of the blockchain should not be transmitted in clear text. For example, asymmetric encryption can be used to negotiate key, and symmetric encryption algorithm can be used to encrypt and decrypt data. The data provider should also strictly evaluate the sensitivity and security level of the data, decide whether to send the data to the blockchain, whether to desensitize the data, and adopt strict access control measures
3. Application system security
application system security needs to start from the aspects of identity authentication, authority system, transaction rules, anti fraud strategy, etc.
relevant personnel, transaction nodes and transaction data involved in application operation should be controlled in advance and auditable afterwards. Taking financial blockchain as an example, consensus algorithm with stronger fault tolerance, anti fraud and higher performance can be adopted to avoid joint fraud of some nodes
4. Key security
to encrypt the communication data between the blockchain nodes and the key to encrypt the data stored on the blockchain nodes, the plaintext should not exist on the same node, and the private key should be properly saved by the encryption machine. When the key is lost or leaked, the system can identify the relevant records of the original key, such as account control, communication encryption, data storage encryption, etc., and implement response measures to make the original key invalid. The key should also be managed strictly in the life cycle, and should not be permanently valid. It needs to be replaced after reaching a certain time cycle
5. Risk control mechanism
there should be careful detection measures for the network layer, host operation, data access of application system, transaction frequency and other dimensions of the system. For any suspicious operation, alarm, record and verification should be carried out. If illegal operation is found, loss assessment should be carried out, remedial measures should be taken at the technical and business levels, and security measures should be strengthened, And trace the source of illegal operation to prevent further attacks

Article source: white paper on blockchain technology and application development in China

7. You should be normal. The flowers are getting old. They are going to thank you. The flowering period lasted about one and a half months
the leaves are normal
Osmanthus fragrans are cymes clustered in leaf axils, or close to broom shaped, with many flowers in each axil; Bracts broadly ovate, thick, 2-4 mm long, mucronate, glabrous; Pedicel slender, 4-10 mm long, glabrous; The flowers are very fragrant; Calyx ca. 1 mm, lobes slightly irregular; Corolla yellow white, light yellow, yellow or orange red, 3-4 mm long, corolla tube only 0.5-1 mm long; Stamens inserted in the middle of corolla tube, filaments very short, about 0.5 mm long, anthers about 1 mm long, connectives slightly extended at the apex of anthers, showing inconspicuous small tip; Pistil ca. 1.5 mm, style ca. 0.5 mm. Fruit skew, oval, 1-1.5 cm long, purple black. The flowering period is from September to early October, and the fruiting period is in March of the next year.

8. The security of Chongqing jinwowo network analysis blockchain technology is as follows:
1 - blockchain technology helps to strengthen the protection of customer information
2 - blockchain technology can further improve the consumption experience
3 - blockchain technology can rece the risk of information asymmetry
4 - blockchain technology can ensure the security, authenticity and reliability of transaction information.

9. The advantages of blockchain in information security of jinwowo group are summarized in the following three aspects:
1. Using highly rendant database to ensure the data integrity of information
2. Using the relevant principles of cryptography to verify data and ensure that it can not be tampered with
3. In terms of authority management, using multiple private key rules to control access rights

10. Blockchain technology can help us improve the security of encryption, authentication and other protection mechanisms, which is absolutely good news for the security of the Internet of things and DDoS Defense Community. Blockchain technology can also be applied to other fields. The blockchain + public service mode, which is launched by Changsha high tech Zone, is a SMIC blockchain service platform project, We are soliciting information from enterprises on the chain. In the future, relevant enterprise affairs and government affairs can cooperate on the chain. It is also one of the key blockchain projects in Hunan Province.