Data encryption method

Abstract

The invention discloses a data encryption method which comprises the following steps: presetting an algorithm library including a plurality of encryption algorithms; establishing a corresponding security policy according to the user's attribute requirement for the encryption algorithms, wherein the establishment of the corresponding security policy includes selecting the required encryption algorithm from the algorithm library; and encrypting the data to be encrypted according to the security policy. In the embodiment of the invention, when being required to establish a new security policy to improve the security of the data, the user only needs to determine the attribute requirement of the encryption algorithm. Thus, the corresponding security policy can be established so that the appropriate encryption algorithm can be selected to encrypt the data to be encrypted. As a result, it is possible for the user to easily establish or update the security policy, thereby effectively saving the cost of replacing the security policy and changing the encryption and decryption algorithms.

Description

technical field [0001] The invention relates to the field of data security, in particular to a data encryption method. Background technique [0002] Data encryption and decryption is one of the most commonly used means of security and confidentiality. The way of data encryption is generally to use technical means to change the data that needs to be encrypted into something that cannot be directly understood by the data obtainer, and then transmit the data; because in general, Only the data receiver who masters the corresponding data decryption method can restore the received data to readable information (that is, the data decryption process), so as to achieve the purpose of data confidentiality. [0003] The technical means of data encryption generally need to include two elements: an algorithm and a key; in this way, by using the key (the key can be preset data) as a parameter, by calculating the preset algorithm with the key and the data to be encrypted , and then process...

AI Technical Summary

Problems solved by technology

[0004] With the development of data cracking technology, criminals use data cracking technology to crack encrypted data more and more efficiently, thus causing data security risks

[0005] In the prior art, in order to improve data security, methods such as continuously replacing security policies and changing encryption and decryption algorithms are generally used to change the encryption and decryption methods of data, so as to make the cracking of criminals invalid. However, the above-mentioned improvement of data security In the way of continuous replacement of security policies and transformation of encryption and decryption algorithms requires a large cost investment to achieve

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