Analysis of information security and data encryption

Paper Keywords: data security encryption Technology
Abstract: into the new century, the rapid development of science and Technology, people usher in a knowledge explosion of the Information age, Information and data transmission speed faster and more convenient, the Information also increases the amount of data transmission, transmission more vulnerable to security risks. Therefore, the Information security and data encryption more important, more and more to get people's attention, first introduced data security and encryption Information necessary external conditions, namely, Computer security and communications security, on this basis, the system information data set security and encryption technologies, including: storage encryption and transmission encryption, key management and encryption Technology to confirm encryption, message digests, and integrity of the identification Technology.


Under the current circumstances, it is the transmission of information and exchange of data faces two major aspects of the impact of information security: human factors and human factors which is the human factor: hackers, viruses, Trojan horses, spoofing, etc., non-human factors means: force majeure, natural disasters such as fire, electromagnetic interference, or Computer hardware failure, damage to other components in a number of factors, if not the necessary information and data encryption, message data we may disclose, by unscrupulous molecules to obtain, as well as damage to our own fundamental interests of others, or even cause harm national security and therefore, information security and encryption of data in the current situation on people's lives is essential, through the information and data encryption, information and data have the security, people do not have scruples information data leakage can be safely done on the network data transfer and convenient information exchange.

An information data security and encryption of the necessary external conditions for
1.1 Computer Security. Each Computer network users are the first data to their information being stored on your Computer, and then, before the data transfer information between each other and exchange information effectively protect their data security must be based on the premise of ensuring the security of a computer, computer There are two main aspects of security including: computer hardware, computer software, security and safety .1 computer hardware security Technology. to maintain the normal operation of the computer, periodically check for hardware failure, and timely maintenance treatment, wearing the device in advance of a security issue replacement to ensure the safety of computer power line to provide backup power system, real-time to keep the line smooth .2 computer software security technology. First, there must be safe and reliable operating system as computer work platforms, operating systems must have access control, security kernel and other security features, can join at any time for new computer software to detect, such as providing security alert windows, etc. Second, the computer anti-virus software, every computer to the normal exchange of information with other users online, real-time protection have to be the dangers of computer viruses , a good anti-virus software can effectively protect against computer viruses.

1.2 Communications Security. Communications security is the basic information data transmission conditions, when the data communication lines to transmit information security risk, the security of information and data can not be delivered to the designated place, although with the gradual improvement of science and technology, computer communications network has been further refined and improved, but the information still requires a secure data communications environment, mainly through the following information encryption technology .1 This is the most basic information security, the most important core of technical measures. We generally through a variety of encryption algorithms for specific information and data encryption to protect the security of information and data to confirm the information communication technology .2 In order to effectively prevent the information being illegally fabrication, falsification and counterfeiting, we limit the scope of information sharing is Confirm the information technology through the technology, the sender can not deny their own outgoing message, the recipient can verify the legitimate news of whether it is true that he received, in addition to those legal letters, but others can not forge messages .3 access control technology, which only allows users access to a library of basic information, ban users with a random or purpose of remove, modify or copy the information on file at the same time, the system administrator can use this technology in real-time observation of users in the network's activities, effective to prevent hackers.

2 information data security and encryption technology
With the computer network has gradually improved, people data transmission and exchange of information a higher security requirements, information security and data encryption technology came into being. However, the traditional security concept that is completely trusted internal network, only the net can not be trusted, led mainly in the information data security firewall, intrusion detection mainly ignored the information within the network data encryption at the importance of the following introductory information data security and encryption technology.

2.1 storage encryption and transmission encryption. Storage encryption into ciphertext storage and access control are two of its main purpose is to prevent the data stored in the information process information and data leakage. Ciphertext encryption algorithm stored mainly through conversion, encryption module, an additional password encryption method, storage Take control of the user through a review of qualifications and restrictions, rights, legitimacy of the user to identify, prevent unauthorized access to legitimate users and unauthorized users to access information and data information data. Links to free download http://www.hi138.com transmission line encryption and encryption technology into end - end encryption two, its main purpose is to transfer the information in the data stream is encrypted. line encryption key for each line by using different encryption keys for line encryption, regardless of the source and the destination of information security. end - end encryption of information is automatically encrypted by the sender side, and enter the TCP / IP information packet, and then as a non-reading and non-identifiable information and data through the Internet, once the information reaches the destination, will be automatically re, decryption, into readable information and data.

2.2 Key management and encryption technology to confirm encryption technology. Key management information and data encryption technology to ease of use, information and data encryption on many occasions, the concentrated expression of key applications, so the key is often the main target of confidentiality and theft. Key media are: magnetic cards, tape, disk, semiconductor memory, etc. key management including key generation, distribution, preservation, replacement and destruction and other security measures on the various links. Network Information confirmed by the strictly limited to encryption technology the scope of information sharing to prevent illegal falsification of information, tampering and counterfeiting. a safety program should make sure the information: the legitimate receiver can verify the veracity of the message he received, the sender can not deny himself sent a message, in addition to legal the sender, the others can not fake news, of a dispute by a third party arbitration. in accordance with the specific purpose of information verification system can be divided into a message confirmation, identification and digital signature The digital signature is because the public key and private key The mathematical relationship between the presence, use one of the key information encrypted data can only be solved with another key. the sender's private key encryption with their own data to the information receiver, the receiver with the sender's public key solution open information data, you can determine who the message came from. This ensures that the sender can not deny the information on the issue.

2.3 Summary and integrity of the message identification technology. Is a unique message digest corresponding to the value of a message or text from a one-way encryption function Hash function generated the message. Sender's private key encryption uses its own summary, also called the message's digital signature. Recipient of the message digest can be identified by key to decrypt the message sender when the message is changed in a way, the message recipient by comparing the analysis of new generation A summary of the original summary of the differences can be found in the middle of the message is changed so that the message digest to ensure the integrity of the message.

Integrity of the identification technology in general, including passwords, keys, identification (involved in information transmission, access, processing of the identity of persons, other items of identification information and data. Under normal circumstances, to meet the confidentiality requirements, the system verified by comparing the input object eigenvalue whether pre-set parameters, and information and data security.

3 Conclusion
In summary, the information data security and encryption technology to protect the safety of our current situation and exchange of information to pass the basic skills of information security. Hope this study can serve as a catalyst, causing the attention of experts at home and abroad , put more energy and more financial and material resources to research information and data security and encryption technologies to better protect every network user's information security.



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