نویسندگان
1 دانشجوی دکترای مخابرات، دانشگاه صنعتی شریف، تهران، ایران
2 مربی و عضو هیئت علمی، دانشگاه پیام نور، تهران، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Required memory, online search time and success probability are the main performance metrics of a
Time Memory Trade-Off (TMTO) Attack. One of the basic challenges in TMTO attack is the way of
choosing TMTO attack parameters like number and length of chains to meet some certain performance
metrics. Considering online breaking time, we propose an optimized procedure for selecting rainbow table
TMTO attack parameters. Unlike previous works that mainly deal with minimizing required memory in the
rainbow table TMTO attack, we simultaneously focus on the required memory and the online breaking time
and consider index and sequential search techniques. Our parameter selection technique is optimized
regarding the minimization of the required memory subject to a certain success probability and a maximum
online breaking time. Obtained results are two compact mathematical expressions for determining the
rainbow table TMTO attack parameters, number and length of chains for the sequential and the index
search methods. The application of our optimized parameter selection procedure is also shown in few
sample design examples.
کلیدواژهها [English]