منابع مشابه
MICAL Analyses HC-Gammon
We analyse Pollack and Blair’s HC-Gammon backgammon program using a new technique that performs Monte Carlo simulations to derive a Markov Chain model for Imperfect Comparison ALgorithms, called the MICAL method, which models the behavior of the algorithm using a Markov chain, each of whose states represents a class of players of similar strength. The Markov chain transition matrix is populated...
متن کاملStream Cipher HC - 256 ?
HC-256 is a software-efficient stream cipher. It generates keystream from a 256-bit secret key and a 256-bit initialization vector. The encryption speed of the C implementation of HC-256 is about 1.9 bits per clock cycle (4.2 cycles/byte) on the Intel Pentium 4 processor.
متن کاملM2ICAL Analyses HC-Gammon
We analyse Pollack and Blair’s HC-Gammon backgammon program using a new technique that performs Monte Carlo simulations to derive a Markov Chain model for Imperfect Comparison ALgorithms, called the MICAL method, which models the behavior of the algorithm using a Markov chain, each of whose states represents a class of players of similar strength. The Markov chain transition matrix is populated...
متن کاملSome observations on HC-128
In this paper, we use linear approximations of the addition modulo 2 of three n-bit integers to identify linear approximations of g1, g2, the feedback functions of HC-128. This, in turn, shows that the process of keystream output generation of HC-128 can be well approximated by linear functions. In this direction, we show that the “least significant bit” based distinguisher (presented by the de...
متن کاملThe Stream Cipher HC-128
Statement 1. HC-128 supports 128-bit key and 128-bit initialization vector. Statement 2. 2 keystream bits can be generated from each key/IV pair. Statement 3. There is no hidden flaw in HC-128. Statement 4. The smallest period is expected to be much larger than 2. Statement 5. Recovering the secret key is as difficult as exhaustive key search. Statement 6. Distinguishing attack requires more th...
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ژورنال
عنوان ژورنال: ACM Transactions on Architecture and Code Optimization
سال: 2013
ISSN: 1544-3566,1544-3973
DOI: 10.1145/2400682.2400706