Data encryption method and device, data decryption method and device and solid state disk

Abstract

The embodiment of the invention provides a data encryption method and a device thereof, a data decryption method and a device thereof, and a solid state disk, wherein the data encryption method comprises the steps of: receiving data to be encrypted and obtaining the position information of the data to be encrypted; receiving an encryption key decrypted by a controller and obtaining a session key used for encrypting the data to be encrypted according to the encryption key after decryption and the position information; and encrypting the data to be encrypted according to the session key. By carrying out predetermined operation on the KEY and the position information of data storage in the encryption process to generate the corresponding session key, the aim of using the corresponding session key to encrypt the data entering and going out of the address can be realized; as each data storage position corresponds to a unique session key, the attacker cannot reversely reckon the KEY even obtaining a certain session key through decryption, thus guaranteeing the confidentiality of data in SSD and improving the data safety.

Description

technical field [0001] The invention relates to the technical field of data storage, in particular to a data encryption method and device, a data decryption method and device, and a solid-state hard disk. Background technique [0002] With the development of electronic technology, the capacity of memory has increased tens of thousands of times. However, with the explosive growth of data capacity, the read rate of memory has become a bottleneck restricting the development of memory. Therefore, solid-state devices that can read data at a faster rate Hard disk (Solid State Disk; hereinafter referred to as: SSD) came into being. Currently, SSDs are widely used in military, video surveillance, network surveillance, network terminals, medical, aviation, navigation equipment and other fields. Therefore, the data security of SSD is particularly important. [0003] In the related technology, the data in the SSD can be encrypted to ensure the security of the data in the SSD. When en...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a data encryption method and device, a data decryption method and device, and a solid-state hard disk, which are used to solve the problem of low data security in the SSD caused by using a unique data encryption key to encrypt data in and out of the SSD in the prior art defects, to provide higher security for data in SSD

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