基于环形振荡器网络的局部测试向量生成与优化方法

Local test vector generating and optimizing method based on annular oscillator network

Abstract

本发明涉及集成电路可信任性检测技术领域,为实现有效的增强局部区域的电路活动,进一步的增加硬件木马的活性,在一定程度上提高在工艺噪声的影响下硬件木马影响的信噪比,大大的提高硬件木马的测试效率,本发明,基于环形振荡器网络的局部测试向量生成与优化方法,保持原始版图不变,在版图的空余区间植入局部区域活动性感知单元,生成测试电路,再针对测试电路进行局部测试向量的生成与优化,步骤如下:步骤一:测试电路的生成;步骤二:局部测试向量生成与优化系统初始化;步骤三:随机产生一组测试向量集,施加测试向量;步骤四:数据采集;步骤五:测试完成判断;步骤六:测试向量的优化。本发明主要应用于集成电路可信任性检测场合。
The invention relates to a local test vector generating and optimizing method based on an annular oscillator network, belongs to the technical field of trustiness detection of an integrated circuit, and aims at enhancing the circuit activity in the local area, further improving the resistance to hardware Trojans, improving the influencing signal to noise ratio of the hardware Trojans to certain extent under influence of technical noises, and improving the hardware Trojan testing efficiency greatly. According to the method, an original layout is not changed, active sensing units of a local area is inserted into a spare space in the layout, a test circuit is generated, and a local test vector is generated and optimized for the test circuit. The method comprises the following steps that 1) the test circuit is generated; 2) a local test vector generating and optimizing system is initialized; 3) a test vector set is generated randomly, and test vectors are applied; 4) data is collected; 5) determination is completed by test; and 5) the test vectors are optimized. The method is mainly applied to trustiness detection occasions of the integrated circuits.

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