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Reports (Research Report) Year : 1999

The Support Splitting Algorithm

Nicolas Sendrier


Two linear codes are permutation-equivalent if they are equal up to a fixed permutation of the codewords coordinates. We present here an algorithm able to compute this permutation. We introduce the concept of signature: a property of a position of a code such that the set of all signatures of a given code is globally invariant by permutation. To compute the permutati- on between two equivalent codes, one needs a signature which is both discrimin- ant and easy to compute. The weight enumerator of the hull of a code provides a signature which has such properties in most cases.


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inria-00073037 , version 1 (24-05-2006)


  • HAL Id : inria-00073037 , version 1


Nicolas Sendrier. The Support Splitting Algorithm. [Research Report] RR-3637, INRIA. 1999. ⟨inria-00073037⟩
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