UMBERTO COVA on Fri, 17 May 2002 17:14:48 +0200

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question about finite fields,please help me!!!

First of all,thanks for your help!
I need to know how I can determine a generator of a finite field using Pari;is there a specific function that builds a primitive polynomial of degree n over a field Fp(something similar to ffinit)?
Futhermore,how can I realize a modular exponentiation of a polynomial (f(x))^a (mod g(x)) without problems of overflow and in a reasonable time?
Thank you very much
Umberto Cova