利用锁定:利用米格-V的逻辑锁定来获取秘密数据
Lennart M Reimann1, Yadu Madhukumar Variyar1, Lennet Huelser1
1RWTH Aachen University, Aachen, Germany.
概括
逻辑锁定保护硬件设计,但可以暴露敏感数据. 这项研究发现,改变米格-V处理器的逻辑锁定密钥可以在运行时显示100%的加密密钥.
科学领域:
- 计算机工程 计算机工程
- 网络安全 网络安全
- 硬件安全 硬件安全
背景情况:
- 逻辑锁定是一种用于保护集成电路设计在制造过程中免受知识产权盗窃和恶意修改的技术.
- "米格-V是第一个商用逻辑锁RISC-V处理器,专为高安全性应用而设计.
- 虽然有效防止设计改,但逻辑锁定对运行时数据保密性的影响仍然未得到充分探索.
研究的目的:
- 评估逻辑锁定对米格-V RISC-V处理器数据保密性的影响.
- 为了识别在运行时利用逻辑锁硬件产生的潜在数据泄露.
- 评估逻辑锁定超出传统的钥匙恢复攻击的安全影响.
主要方法:
- 该研究涉及改变米格-V处理器的逻辑锁定键.
- 在密钥更改过程中,SSL加密算法在处理器上执行.
- 通过监控处理器的行为和输出来分析数据泄露.
主要成果:
- 在逻辑锁定密钥中更改单个位导致加密加密密钥的完全暴露.
- 对逻辑锁定硬件的利用导致在运行时发生重大数据泄露.
- 这些发现表明逻辑锁定过程中固有的关键安全漏洞.
结论:
- 逻辑锁定,在保护设计免受制造威胁的同时,在运行时引入了重要的数据保密风险.
- 对于逻辑锁硬件来说,全面的安全评估至关重要,它超出了钥匙恢复防御的范围.
- 这项研究强调了对新型安全机制的需求,以确保先进处理器架构中的数据保密.
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