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arXiv 0905.2177cs.CRmath.AG
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低次曲线的$L (1/3)$离散对数算法

An $L (1/3)$ Discrete Logarithm Algorithm for Low Degree Curves

Andreas Enge, Pierrick Gaudry, Emmanuel Thomé

摘要:

我们提出了一个算法来解决离散对数问题的雅可比族的平面曲线,其程度在$X$和$Y$是低的,相对于他们的基因。有限基域$\FF_q$是任意的,但是它们的大小与亏格相比不应该增长得太快。对于这类族,群结构和离散的代数可以在$L_{q^g}(1/3, O(1))$的次指数时间内计算。运行时边界依赖于类似于数字字段sieve或函数字段sieve中使用的算法。

英文摘要:

We present an algorithm for solving the discrete logarithm problem in Jacobians of families of plane curves whose degrees in $X$ and $Y$ are low with respect to their genera. The finite base fields $\FF_q$ are arbitrary, but their sizes should not grow too fast compared to the genus. For such families, the group structure and discrete logarithms can be computed in subexponential time of $L_{q^g}(1/3, O(1))$. The runtime bounds rely on heuristics similar to the ones used in the number field sieve or the function field sieve.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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