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针对现存安全U盘的不足,提出了一款集数据加/解密、认证、抵抗攻击于一体的大容量安全U盘硬件设计方案,它能够较好地保护密算法和密钥的安全,在超期或非法操作超过一定次数时可自动销毁算法和存储的数据。从安全模型、结构模型等方面进行阐述,重点介绍了USB接口控制模块、数据加/解密、安全芯片操作等几个关键模块的开发,最后从策略、密钥安全等方面对此U盘的安全性进行了整体分析。
Aiming at the shortage of existing secure U disk, this paper presents a hardware design scheme of large capacity secure U disk which integrates data encryption / decryption, authentication and anti-attack. It can protect the security of dense algorithm and key, Or illegal operation more than a certain number of times can automatically destroy the algorithm and stored data. From the aspects of security model and structure model, the paper introduces the development of several key modules such as USB interface control module, data encryption / decryption, security chip operation and so on. Finally, the security of this USB flash drive is analyzed from the aspect of strategy and key security Sex conducted a holistic analysis.