Point Compression and Coordinate Recovery for Edwards Curves over Finite Field | Zendy

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Point Compression and Coordinate Recovery for Edwards Curves over Finite Field

Author(s) -

Justus Benjamin

Publication year - 2014

Publication title -

annals of west university of timisoara - mathematics and computer science

Language(s) - English

Resource type - Journals

eISSN - 1841-3307

pISSN - 1841-3293

DOI - 10.2478/awutm-2014-0014

Subject(s) - compression (physics) , affine transformation , point (geometry) , scalar multiplication , scalar (mathematics) , decompression , mathematics , finite field , coordinate system , algorithm , computer science , geometry , discrete mathematics , physics , thermodynamics

We present two computational approaches for the purpose of point compression and decompression on Edwards curves over the finite field Fp where p is an odd prime. The proposed algorithms allow compression and decompression for the x or y affine coordinates. We also present a x-coordinate recovery algorithm that can be used at any stage of a differential addition chain during the scalar multiplication of a point on the Edwards curve

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