Scan-based design for test （DFT） is a powerful and the most popular testing technique. However, while scan-based DFT improves test efficiency, it also leaves a side channel to the privacy information stored in the c...Scan-based design for test （DFT） is a powerful and the most popular testing technique. However, while scan-based DFT improves test efficiency, it also leaves a side channel to the privacy information stored in the chip. This paper investigates the side channel and proposes a simple but powerful scan-based attack that can reveal the key and/or state stored in the chips that implement the state-of-the-art stream ciphers with less than 85 scan-out vectors.展开更多
基金partially supported by the National High Technology Research and Development 863 Program of China under Grant No.2013AA013202the Key Programs for Science and Technology Development of Chongqing of China under Grant No.cstc2012ggC40005+1 种基金the National Natural Science Foundation of China under Grant No.61173014the National Science Foundation of USA under Grant No.CNS-1015802
文摘Scan-based design for test （DFT） is a powerful and the most popular testing technique. However, while scan-based DFT improves test efficiency, it also leaves a side channel to the privacy information stored in the chip. This paper investigates the side channel and proposes a simple but powerful scan-based attack that can reveal the key and/or state stored in the chips that implement the state-of-the-art stream ciphers with less than 85 scan-out vectors.
文摘肩关节周围炎祖国医学称之为“肩凝症”、“冻结肩”。临床症状以早期肩部疼痛,晚期肩关节功能障碍为主。笔者1987年以来,将136例肩关节周围炎患者,随机分为齐刺温针法治疗组(简称治疗组)、穴位注射对照组(简称对照组 A)和单针刺法对照组(简称对照组 B),结果治疗组疗效明显优于对照组 A 和对照组B,现报告如下。
