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Embedded Flash controller supporting encrypted storage

An encrypted storage and embedded technology, applied in the storage field, can solve problems such as low security, achieve the effects of improving versatility, realizing automatic address management, and realizing encryption

Pending Publication Date: 2021-08-06
青芯半导体科技(上海)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is mainly based on software implementation, and the encryption method is relatively simple and the security is not high.

Method used

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  • Embedded Flash controller supporting encrypted storage
  • Embedded Flash controller supporting encrypted storage
  • Embedded Flash controller supporting encrypted storage

Examples

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Embodiment Construction

[0045] In the following description, the present invention is described with reference to various examples. One skilled in the art will recognize, however, that the various embodiments may be practiced without one or more of the specific details, or with other alternative and / or additional methods, materials, or components. In other instances, well-known structures, materials, or operations are not shown or described in detail so as not to obscure the inventive concepts of the present invention. Similarly, for purposes of explanation, specific quantities, materials and configurations are set forth in order to provide a thorough understanding of embodiments of the invention. However, the invention is not limited to these specific details. Furthermore, it should be understood that the embodiments shown in the drawings are illustrative representations and are not necessarily drawn to correct scale.

[0046] In this specification, reference to "one embodiment" or "the embodiment...

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Abstract

The invention discloses an embedded Flash controller supporting encrypted storage. The embedded Flash controller comprises a configuration bus interface, a data bus reading interface, a control command path, a data programming path and a data reading path, wherein the configuration bus interface and the data bus reading interface are in communication connection with a processor. A data writing encryption module is arranged in the data programming path and used for encrypting data to be programmed, and a data reading decryption module is arranged in the data reading path and used for decrypting the read data.

Description

technical field [0001] The invention relates to the technical field of storage, in particular to an embedded Flash controller supporting encrypted storage. Background technique [0002] Compared with ROM, embedded Flash (Embedded Flash, or eFlash) has reprogramming capability, and the data stored in embedded Flash can be erased and reprogrammed; compared with SRAM, the content stored in embedded Flash is in It will not be lost after power failure. Therefore, embedded Flash, as a non-volatile storage module, can be widely used in the field of low-power, low-cost system chip design, especially in the field of security chips, embedded Flash can be used to store keys and support key updates, and thus have been widely used. [0003] Such as figure 1 As shown, the system chip may include a processor CPU, a direct memory access DMA, and an embedded Flash, and the processor CPU, the direct memory access DMA, and the embedded Flash communicate with a security subsystem and periphe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/10G06F12/14G06F21/60G06F12/02G06F12/0877G06F12/0871G06F13/16
CPCG06F11/1068G06F12/1408G06F21/602G06F12/0246G06F12/0877G06F12/0871G06F13/1668G06F2212/1052G06F2212/1016G06F2212/7202
Inventor 江国范
Owner 青芯半导体科技(上海)有限公司
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