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In this paper the authors present an attack on 7-round AES-128/256 to improve the known cryptanalysis by changing the order of round transformation, using the alternative representation of the round keys, exploiting the relationship of keys, designing the key difference pattern properly. By using the improved attack method, the complexity is reduced from 2192 to 2104 with 272 chosen plaintexts, the...
Secure multi-party computation (SMC) deals with the problem of secure computation among participants who are not trusted by others. Privacy preserving computational geometry is a special area in SMC and has been applied to various of areas such as military, commerce and governments et al. In this paper, we will propose an efficient secure protocol, which is based on numerical computation, for the...
In the real world concepts are often not stable but change with time. The underlying data distribution may change as well. The model built on old data will be necessarily updated. This problem is known as concept drift. Mining concept drifts is one of the most important fields in mining data stream. The paper presents a totally new gradual forgetting approach for mining concept-drift data stream....
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