TY - JOUR N2 - This paper deals with the phase-shift fault analysis of stream cipher Grain v1. We assume that the attacker is able to desynchronize the linear and nonlinear registers of the cipher during the keystream generation phase by either forcing one of the registers to clock one more time, while the other register is not clocked, or by preventing one of the registers from clocking, while the other register is clocked. Using this technique, we are able to obtain the full inner state of the cipher in reasonable time (under 12 hours on a single PC) by using 150 bits of unfaulted keystream, 600 bits of faulted keystreams and by correctly guessing 28 bits of the linear register. L1 - http://www.czasopisma.pan.pl/Content/103841/PDF/19_1154-4307-1-PB.pdf L2 - http://www.czasopisma.pan.pl/Content/103841 PY - 2018 IS - No 2 DO - 10.24425/119360 KW - stream ciphers KW - Grain v1 KW - fault analysis KW - phase-shift attack KW - desynchronization attack A1 - Hromada, Viliam A1 - Pethő Tibor PB - Polish Academy of Sciences Committee of Electronics and Telecommunications VL - vol. 64 DA - 2018.05.15 T1 - Phase-shift Fault Analysis of Grain v1 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/103841 T2 - International Journal of Electronics and Telecommunications ER -