Abstract
Using a method based on Chinese Remainder Theorem for polynomial multiplication and suitable reductions, we obtain an efficient multiplication method for finite fields of characteristic 3. Large finite fields of characteristic 3 are important for pairing based cryptography [3]. For 5 ≤ ℓ ≤ 18, we show that our method gives canonical multiplication formulae over \(\mathbb{F}_{3^{\ell m}}\) for any m ≥ 1 with the best multiplicative complexity improving the bounds in [6]. We give explicit formula in the case \(\mathbb{F}_{3^{6 \cdot 97}}\).
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Cenk, M., Özbudak, F. (2008). Efficient Multiplication in \(\mathbb{F}_{3^{\ell m}}\), m ≥ 1 and 5 ≤ ℓ ≤ 18. In: Vaudenay, S. (eds) Progress in Cryptology – AFRICACRYPT 2008. AFRICACRYPT 2008. Lecture Notes in Computer Science, vol 5023. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-68164-9_27
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DOI: https://doi.org/10.1007/978-3-540-68164-9_27
Publisher Name: Springer, Berlin, Heidelberg
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