An Improved Guess-and-Determine Attack on the A5/1 Stream Cipher
نویسندگان
چکیده
In Europe and North America, the most widely used stream cipher to ensure privacy and confidentiality of conversations in GSM mobile phones is the A5/1. In this paper, we present an improved guess-and-determine attack on the A5/1 stream cipher with an average time complexity of 248.5, which is much less than any known guessand-determine attack. The attack has a 100% success rate and requires a small amount of memory. We provide a detailed description of our new attack along with its implementation results.
منابع مشابه
Two Trivial Attacks on A5/1:A GSM Stream Cipher
Stream ciphers play an important role in those applications where high throughput remains critical and resources are very restricted e.g. in Europe and North America, A5/1 is widely used stream cipher that ensure confidentiality of conversations in GSM mobile phones. However careful security analysis of such cipher is very important due to widespread practical applicability. The basic building ...
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عنوان ژورنال:
- Computer and Information Science
دوره 7 شماره
صفحات -
تاریخ انتشار 2014