Secure chip

Abstract

The invention discloses a secure chip. The secure chip comprises a processor, a programmable circuit module and a nonvolatile memory. The programmable circuit module and the nonvolatile memory are connected with the processor through a bus, the programmable circuit module is used for realizing a hardware safety circuit of the secure chip according to a preset configuration file, and the nonvolatile memory is used for storing the preset configuration file. The secure chip is high in safety, and the personable safety circuit of a customer is convenient to update.

Description

technical field [0001] The invention relates to the field of chips, in particular to a security chip. Background technique [0002] In addition to integrating standard general-purpose hardware cryptographic algorithm circuits, the security chip will also integrate private hardware security circuits required by each customer according to different customers, such as customer-private cryptographic algorithm circuits, private key extraction and protection circuits, private Data encryption storage circuit, private data download and management circuit, etc. The key data such as the user's private key will be stored in the chip's built-in non-volatile memory, and the user's key data of different customers will often be stored in different data formats in different areas of the non-volatile memory, plus user rights management The circuits protect the respective data. Among them, the private hardware security circuits required by each customer are integrated into the chip during t...

AI Technical Summary

Problems solved by technology

[0004] In order to support multiple customers, the security chip of the prior art integrates the private hardware security circuits of each customer into the chip, and divides the non-volatile memory into areas for different customers, resulting in a relatively large area of ​​the chip. The chip cost is too high, and the hardware resource waste rate of the chip is also relatively high

Since the user's key data is stored in the non-volatile memory, there is a risk of the user's key data in the chip being cloned, which is not conducive to the security of the chip

In addition, since each customer's customized private hardware security circuit is solidified in the security chip, with the development of information security technology, when customers need to update their private hardware security circuit, they need to re-develop the chip, increasing time and materials cost

However, if the update of customer security requirements is implemented through software, the security will be reduced

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