Data encryption and decryption method, server and storage medium

Abstract

The invention relates to a password technology, and provides a data encryption and decryption method, a server and a storage medium. The method comprises the steps of setting an update period of a key, and generating and storing multi-version keys; receiving a data encryption request, including identity authentication information and data to be encrypted, sent by the user; distributing a key number for the data encryption request, and primarily symmetrically encrypting the data to be encrypted by using a current-version key corresponding to the key number, to acquire a first ciphertext; secondarily symmetrically encrypting the key number, the key version number of the current-version key and the first ciphertext by using the identity authentication information, to acquire a second ciphertext; and receiving a data decryption request sent by the user, and performing an inverse decryption operation on the second ciphertext, to acquire a decryption result. By using the method, server and medium provided by the invention, the key can be periodically updated, and the key security is enhanced.

Description

technical field [0001] The present invention relates to the technical field of encryption, in particular to a data encryption and decryption method, server and storage medium. Background technique [0002] With the development of computer technology and network technology, human beings have entered the era of big data. Facing the massive data information of a large number of users, how to ensure the security of important data has become the focus of attention in the field of information security technology. [0003] On the one hand, compared with ordinary PCs, servers usually have higher requirements in terms of stability and security. In actual work, in order to strengthen information security management, sometimes it is necessary to prevent the client from storing important data locally for a long time. On the other hand, in traditional technology, encryption and decryption algorithms can be used to process data content to prevent unauthorized users from obtaining data co...

AI Technical Summary

Problems solved by technology

In order to strengthen data security and information protection, the key needs to be strictly protected and the key needs to be replaced frequently. However, the existing cryptosystems with the function of dynamically updating the key usually have high system complexity.

[0004] However, most of the current key management products only provide fixed and long-term key management, so there is a high risk of deciphering the long-term use of the key in the network, resulting in the leakage of personal private information, which is harmful to personal safety, Immeasurable losses caused by property safety and other aspects

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