A kind of solid-state hard disk data encryption and decryption method and solid-state hard disk system
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A solid-state hard disk, encryption and decryption technology, applied in the field of data security, can solve the problems of low encryption strength and data security, achieve the effect of improving data encryption strength and data security, and ensuring read and write performance
Active Publication Date: 2016-08-17
RAMAXEL TECH SHENZHEN
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However, the AES algorithm alone is used to encrypt the data of the solid state drive, and the encryption strength and data security are low.
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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0041] Such as figure 1 As shown, a solid state disk system 100 of the present invention includes a host 10 and a solid state disk 20 connected to the host. The host 10 is preferably a notebook computer, a desktop computer, a server or a tablet computer, etc., and the solid state disk 20 is installed on the host 10 or is independent from the host 10 . The host 10 includes a key generation unit 11 , a first key storage unit 12 , a key confidentiality unit 13 and a key transmission unit 14 .
[0042] The key generation unit 11 is used to generate a public-private key pair (k1, k2) based on an asymm...
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Abstract
The invention is applicable to the field of data security, and provides a solid state hard disk data encryption and decryption method and a solid state hard disk system. The data encryption and decryption method comprises the following steps that a host computer generates a public key and private key pair (k1, k2) based on the asymmetrical encryption algorithm; the private key k2 is stored into a solid state hard disk, and the public key k1 is stored into the host computer; a secret key k3 based on the symmetrical encryption algorithm is generated at the host computer, and the secret key k3 is stored into the solid state hard disk after being signed and encrypted through the private key k2; during the system initialization, the host computer decrypts the secret key k3 encrypted by the private key k2 in the solid state hard disk through the public key k1, a plaintext secret key k3 is obtained, and the solid state hard disk realizes the encryption / decryption on data in the solid state disk through the plaintext secret key k3; when the system is powered off or the computer is powered off, the plaintext secret key k3 is deleted, and in addition, the plaintext secret key k3 cannot be accessed by other programs during the system operation. Therefore, the solid state hard disk data encryption and decryption method and the solid state hard disk system have the advantages that the data encryption intensity and the data security of the solid state hard disk can be improved, and in addition, the reading and writing performance of the solid state hard disk is ensured.
Description
technical field [0001] The invention relates to the field of data security, and more specifically relates to a data encryption and decryption method of a solid-state hard disk and a solid-state hard disk system. Background technique [0002] Solid State Disk (SSD for short) is a kind of permanent memory, which, like flash memory, non-permanent memory, and synchronous dynamic random access memory (SDRAM), can be used as an external storage device for a computer. Solid state hard drive has the advantages of fast read and write speed, low power consumption, no noise, anti-vibration, low heat, small size, and large working range. It is widely used in military, vehicle, industrial control, video surveillance, network monitoring, network terminals, electricity, Medical, aviation, etc., navigation equipment and other fields. [0003] At present, the mainstream algorithm for encryption and decryption of solid state disks adopts the AES algorithm, and the AES (Advanced Encryption St...
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