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Switch to exhaustive groups with small B coefficient

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This commit is contained in:
Pieter Wuille
2023-01-10 16:10:45 -05:00
parent 88e80722d2
commit 4934aa7995
5 changed files with 169 additions and 104 deletions
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7
src/scalar_impl.h
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@@ -33,15 +33,18 @@ static int secp256k1_scalar_set_b32_seckey(secp256k1_scalar *r, const unsigned c
return (!overflow) & (!secp256k1_scalar_is_zero(r));
}
/* These parameters are generated using sage/gen_exhaustive_groups.sage. */
#if defined(EXHAUSTIVE_TEST_ORDER)
# if EXHAUSTIVE_TEST_ORDER == 13
/* Begin of section generated by sage/gen_exhaustive_groups.sage. */
# if EXHAUSTIVE_TEST_ORDER == 7
# define EXHAUSTIVE_TEST_LAMBDA 2
# elif EXHAUSTIVE_TEST_ORDER == 13
# define EXHAUSTIVE_TEST_LAMBDA 9
# elif EXHAUSTIVE_TEST_ORDER == 199
# define EXHAUSTIVE_TEST_LAMBDA 92
# else
# error No known lambda for the specified exhaustive test group order.
# endif
/* End of section generated by sage/gen_exhaustive_groups.sage. */
/**
* Find r1 and r2 given k, such that r1 + r2 * lambda == k mod n; unlike in the