Protection system uses database encryption to achieve data security

A famous information security expert once said that information security is nothing more than three aspects. One is data security, the other is system security, which is the popular border security such as firewall, intrusion detection and VPN, and the third is e-commerce security.

What is the technical status and future trend of data encryption and database encryption? Can product solutions in this field meet the needs of industry and enterprise users?

Firewall is not the whole problem

Anti-intrusion network security technologies represented by firewalls are not equal to all information security. In most information systems, core data and data are stored in the form of databases. A database without encryption is like a file cabinet without a lock. For people with ulterior motives, plagiarism and tampering are easy. Therefore, the security of the database cannot be ignored.

The database encryption system is designed and developed to enhance the security of the common relational database management system. It aims to provide a secure and applicable database encryption platform to effectively protect the content of communications and database storage. It implements the security and integrity requirements of database data storage and communication through security methods such as communication encryption and database storage encryption, so that the database is stored in ciphertext and works in ciphered mode, ensuring data security.

  Encrypted database is imminent

       After years of research, China's database encryption technology has become relatively mature. Some companies 'database security middleware technology can effectively realize database storage and query on the premise of protecting users' original software and hardware investment. This technology has been effectively applied in practice.

So, why is the issue of database security a current security issue for industry and enterprise users?

First, anti-copy information security technology is a truly reliable technology, and database encryption technology is one of such technologies. One of the methods used in intelligence warfare between hostile agencies is often the most direct method of buying and copying. If the enemy buys a cleaner who is not usually noticed by people, even if the cleaner does not know any technology, he only needs to use a hard disk copying machine that is frequently used by intelligence agents and agents, and press a button. All data can be copied in a few minutes!

At this time, protection systems such as firewalls and intrusion detection do not play a role in security. The database is encrypted and stored in cipher text. Even if it is stolen or copied, the confidential data will not be obtained by the enemy, because at this time they obtain only a bunch of passwords that can hardly be cracked.

Second, the popularity of the Internet, the widespread use of mobile communications, and laptop computers pose a greater threat to database security. In wireless communication, it may be intercepted, spoofed, or intercepted at any time. While wireless Internet access and mobile communication bring convenience and high efficiency to people, it also brings a major hidden danger to information security.

Thirdly, database security should be given equal emphasis on operating system, network security, and CPU to form the center of gravity of the information security strategy. Only by setting standards and implementing and effectively monitoring database security as an important content of information security management can information security be further guaranteed.

7 major features to achieve database encryption

Generally speaking, an effective database encryption system mainly has the following seven functions and features.

1. Identity authentication: In addition to providing a user name and password, users must also provide other relevant security credentials in accordance with system security requirements. The system can choose to use terminal keys, user USB Key, etc. to enhance the security of identity authentication.

2. Communication encryption and integrity protection: All database access is encrypted during network transmission, and the destination of the communication can also verify the integrity of the communication; the meaning of one encryption at a time is to prevent replay and tampering.

3. Database data storage encryption and integrity protection: the system uses data item-level storage encryption, that is, different records in the database and different fields of each record are encrypted with different keys, supplemented by verification measures to ensure database data storage Confidentiality and integrity to prevent unauthorized access and modification of data.

4. Database encryption settings: the system can select the database column that needs to be encrypted, so that the user can select those sensitive information for encryption instead of encrypting all data. Only encrypting the user's sensitive data can improve the speed of database access. This is beneficial to the user's autonomous balance between efficiency and safety.

5. Multi-level key management mode: the master key and the master key variable are stored in a secure area, the secondary key is encrypted and protected by the master key variable, and the data encrypted key is protected by the secondary key encryption during storage or transmission , Protected by the master key when used.

6. Security backup: The system provides the database plain text backup function (to prevent disasters, the system provides a plain text database content backup function to prevent the loss of keys or data from causing catastrophic consequences) and key backup functions (users can use the database at the same time The backup function of the management system and the key backup function of the database encryption system are used to back up the ciphertext and the key at the same time, and restore it when needed).

7. Universal interface and extensive platform support: The system adopts an open architecture and supports standard SQL statements.

Related Knowledge Base

â—† Several algorithms for data encryption

Encryption algorithms are formulas and rules that specify the conversion method between plain text and cipher text. The key is the key information to control the encryption algorithm and decryption algorithm, and its generation, transmission, storage and other work are very important.

The basic process of data encryption includes the translation of plain text (that is, readable information) into the code form of cipher text or password. The reverse process of this process is decryption, that is, the process of converting the encoded information into its original form.

The DES algorithm DES (Data Encryption Standard) was developed by IBM after 1970 and was adopted by the US government in November 1976. DES was subsequently adopted by the US National Standards Institute and the American National Standards Institute (ANSI) Admit.

The disadvantage of triple DES DES cryptography is that the key length is relatively short. Therefore, people have come up with a solution to its length, that is, triple DES.

RSA algorithm It is the first algorithm that can be used for both data encryption and digital signature. It is easy to understand and operate, and it is also very popular. The name of the algorithm is named after the inventors: Ron Rivest, AdiShamir and Leonard Adleman.

AES algorithm It is the latest commercial encryption standard to replace the DES algorithm in the 21st century. In theory, this encryption method requires a national military-level cracking device to operate for more than 10 years before it can be deciphered.