frost/secp256k1-zkp
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Merge commits '26de4dfe 6e898534 c083cc6e 1e5d50fa cc2c09e3 efad3506 7012a188 34388af6 98e0358d d0bd2693 185a6af2 6c52ae87 69394879 1e78c18d 202a030f bf0ac460 399722a6 3dc8c072 50f33677 7973576f 1758a92f ' into temp-merge-950

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Jonas Nick committed 2021-06-14 18:16:46 +00:00
2 parents f3708a1ecb 1758a92ffd
commit edcacc2b2e
61 files changed
+4373 -1840
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src/scalar_low_impl.h
+15 -4
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@@ -105,10 +105,6 @@ static int secp256k1_scalar_shr_int(secp256k1_scalar *r, int n) {
return ret;
}
static void secp256k1_scalar_sqr(secp256k1_scalar *r, const secp256k1_scalar *a) {
*r = (*a * *a) % EXHAUSTIVE_TEST_ORDER;
}
static void secp256k1_scalar_split_128(secp256k1_scalar *r1, secp256k1_scalar *r2, const secp256k1_scalar *a) {
*r1 = *a;
*r2 = 0;
@@ -131,4 +127,19 @@ SECP256K1_INLINE static void secp256k1_scalar_chacha20(secp256k1_scalar *r1, sec
*r2 = (seed[1] + n) % EXHAUSTIVE_TEST_ORDER;
}
static void secp256k1_scalar_inverse(secp256k1_scalar *r, const secp256k1_scalar *x) {
int i;
*r = 0;
for (i = 0; i < EXHAUSTIVE_TEST_ORDER; i++)
if ((i * *x) % EXHAUSTIVE_TEST_ORDER == 1)
*r = i;
/* If this VERIFY_CHECK triggers we were given a noninvertible scalar (and thus
* have a composite group order; fix it in exhaustive_tests.c). */
VERIFY_CHECK(*r != 0);
}
static void secp256k1_scalar_inverse_var(secp256k1_scalar *r, const secp256k1_scalar *x) {
secp256k1_scalar_inverse(r, x);
}
#endif /* SECP256K1_SCALAR_REPR_IMPL_H */