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由于安全芯片承载了较多的敏感数据(如密钥),因而其自身的安全也非常重要。对芯片内部的敏感数据进行安全地访问控制是增强其安全性的关键手段之一。提出了一种安全芯片的实施方案和敏感数据访问控制方法,采用软硬件协同配合实现。本方案增加硬件少,安全控制由软硬件配合完成;访问控制可以基于密码算法实现,也可以使用其它方式;访问控制方式可在生产与升级过程中更换,灵活性大。对安全芯片的设计具有较好的参考价值。
Since the security chip carries more sensitive data (such as keys), its own security is also very important. Secure access control of sensitive data inside the chip is one of the key ways to enhance its security. A security chip implementation scheme and sensitive data access control method are proposed, which are realized by the cooperation of hardware and software. This scheme adds little hardware, and the security control is completed by cooperation of hardware and software. The access control can be implemented based on the password algorithm or other ways. The access control method can be changed during production and upgrade, and has great flexibility. The design of the security chip has a good reference value.