31 lines
525 B
C
31 lines
525 B
C
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#include "df.h"
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uint64 expm(uint64 m, uint64 e, uint64 mod)
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{
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uint128 _r = 1;
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uint128 _m = (uint128)m;
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uint128 _mod = (uint128)mod;
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while (e > 0) {
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if (e % 2 == 1) {
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_r = (_r * _m) % _mod;
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}
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_m = (_m * _m) % _mod;
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e = e / 2;
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}
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return (uint64)_r;
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}
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uint64 generateur(uint64 p)
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{
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uint64 q = (p - 1) / 2;
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uint64 g = 2;
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while (1) {
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if (expm(g, 2, p) != 1 && expm(g, q, p) != 1) {
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return g;
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}
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g++;
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}
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}
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