Decryption device and method and system on chip

Abstract

The invention provides a decryption device and method and a system on chip, the decryption device comprises a decryption control circuit and a decryption circuit, and the decryption circuit comprisesa plurality of decryption sub-circuits. The decryption control circuit is used for receiving the first decryption configuration information sent by a processor, and the first decryption configurationinformation comprises the first control information for enabling the decryption control circuit and a memory address. The decryption control circuit is also used for reading the second decryption configuration information used for representing a corresponding decryption algorithm from the memory address according to the first control information, and generating a control signal corresponding to the decryption algorithm according to the second decryption configuration information. The decryption circuit is used for selecting a corresponding sub-decryption circuit according to a decryption algorithm corresponding to the control signal; and the sub-decryption circuit is used for decrypting the encrypted data to obtain decrypted data. According to the method, the decryption speed is greatly improved, and the delay caused by decryption is very small, so that the influence on the storage experience of a user is very small.

Description

technical field [0001] The present invention relates to the technical field of decryption, in particular to a decryption device, method and system on chip. Background technique [0002] In order to make the data stored in the memory more secure, the data to be written in the memory is usually encrypted, and then the encrypted data is stored in the memory; when decrypting, the encrypted data in the memory is decrypted to obtain the decrypted data, among which the common There are two ways of encryption and decryption. [0003] One is to use software encryption and decryption. The processor executes the encryption program to encrypt the unencrypted data, and the processor completes all operations in the encryption process. When decryption is required, the processor executes the decryption program to decrypt the encrypted data, and the processor completes all operations in the decryption process. Since the entire process of encryption and decryption is completed by the proces...

AI Technical Summary

Problems solved by technology

The encryption and decryption speed of this hardware circuit is fast, does not require the processor to participate in the whole process, and will not affect the processing of other affairs by the processor. However, this encryption and decryption circuit is fixed and cannot be changed. Manufacturers who use this chip to manufacture electronic equipment This kind of encryption and decryption circuit cannot be configured more flexibly

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