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Algorithm for unified modular division in GF(p) and GF(2n) suitable for cryptographic hardware

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2 Author(s)
Tenca, A.F. ; Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA ; Tawalbeh, L.A.

A unified algorithm to compute modular division in both GF(p) and GF(2n) fields is presented. It uses a counter variable to keep track of the difference between two field elements, and in this way eliminates the need for comparisons which are usually expensive and time-consuming. The computations in both fields are performed using additions/subtractions and bit shifts, besides using a simple control flow, which makes it suitable for hardware implementation.

Published in:

Electronics Letters  (Volume:40 ,  Issue: 5 )

Date of Publication:

4 March 2004

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