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BackOne/ext/ed25519-amd64-asm/fe25519_iszero.c
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First Commit
2025-11-19 16:23:45 +07:00

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219 B
C

#include "fe25519.h"
int fe25519_iszero_vartime(const fe25519 *x)
{
fe25519 t = *x;
fe25519_freeze(&t);
if (t.v[0]) return 0;
if (t.v[1]) return 0;
if (t.v[2]) return 0;
if (t.v[3]) return 0;
return 1;
}