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Jan
25
comment Modulus for elliptic curve point multiplication
how to handle Fp arithmetic, like i add/sub two numbers in Fp e.g A+b/A-b mod p. do i need to represent these numbers as signed numbers because for A-B if number A is less than B then the result would be negative. There are two possibilities one to represent A and B in two's complement format or take the two's complement of result, which is suitable and faster in Fp arithmetic.
Jan
22
comment Modulus for elliptic curve point multiplication
it is very good and to the point answer.if i am doing arithmetic over Fp^2 (quadratic numbers). what should be the reduction polynomial? and how to compute a reduction polynomial for Fp^4 and so on..