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test catch ECDH small order points

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jeffro256 2024-12-02 11:32:55 -06:00
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tests/unit_tests/carrot_core.cpp
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@ -40,6 +40,41 @@
using namespace carrot;
//----------------------------------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------------------------------
// https://github.com/jedisct1/libsodium/blob/master/src/libsodium/crypto_scalarmult/curve25519/ref10/x25519_ref10.c#L17
static const crypto::x25519_pubkey x25519_small_order_points[7] = {
/* 0 (order 4) */
{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
/* 1 (order 1) */
{{ 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }},
/* 325606250916557431795983626356110631294008115727848805560023387167927233504
(order 8) */
{{ 0xe0, 0xeb, 0x7a, 0x7c, 0x3b, 0x41, 0xb8, 0xae, 0x16, 0x56, 0xe3,
0xfa, 0xf1, 0x9f, 0xc4, 0x6a, 0xda, 0x09, 0x8d, 0xeb, 0x9c, 0x32,
0xb1, 0xfd, 0x86, 0x62, 0x05, 0x16, 0x5f, 0x49, 0xb8, 0x00 }},
/* 39382357235489614581723060781553021112529911719440698176882885853963445705823
(order 8) */
{{ 0x5f, 0x9c, 0x95, 0xbc, 0xa3, 0x50, 0x8c, 0x24, 0xb1, 0xd0, 0xb1,
0x55, 0x9c, 0x83, 0xef, 0x5b, 0x04, 0x44, 0x5c, 0xc4, 0x58, 0x1c,
0x8e, 0x86, 0xd8, 0x22, 0x4e, 0xdd, 0xd0, 0x9f, 0x11, 0x57 }},
/* p-1 (order 2) */
{{ 0xec, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f }},
/* p (=0, order 4) */
{{ 0xed, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f }},
/* p+1 (=1, order 1) */
{{ 0xee, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f }}
};
//----------------------------------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------------------------------
struct mock_carrot_keys
@ -167,6 +202,17 @@ TEST(carrot_core, ECDH_mx25519_convergence)
EXPECT_EQ(Q_mx25519, Q_carrot);
}
//----------------------------------------------------------------------------------------------------------------------
TEST(carrot_core, ECDH_catch_small_order_points)
{
const crypto::secret_key sk = rct::rct2sk(rct::skGen());
for (const crypto::x25519_pubkey &P : x25519_small_order_points)
{
crypto::x25519_pubkey Q;
EXPECT_FALSE(make_carrot_uncontextualized_shared_key_receiver(sk, P, Q));
}
}
//----------------------------------------------------------------------------------------------------------------------
TEST(carrot_core, main_address_normal_scan_completeness)
{
const mock_carrot_keys keys = mock_carrot_keys::generate();