Abstract
Gauss periods can be used to implement finite field arithmetic efficiently. For a small prime p and infinitely many integers n, exponentiation of an arbitrary element in F p n can be done with O(n 2 loglog n) operations in F p , and exponentiation of a Gauss period with O(n 2) operations in F p . Comparing to the previous estimate O(n 2 log nloglog n), using polynomial bases, this shows that normal bases generated by Gauss periods offer some asymptotic computational advantage. Experimental results indicate that Gauss periods are often primitive elements in finite fields.
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