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core_ed25519_is_valid_point: check Y==Z in addition to X==0

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Frank Denis
2025-12-30 12:00:08 +01:00
parent 4f5e89fa84
commit 5106e05223
2 changed files with 6 additions and 2 deletions
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test/default/core_ed25519.c
+2 -1
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@@ -130,11 +130,12 @@ main(void)
assert(crypto_core_ed25519_is_valid_point(p) == 0);
p[0] = 9;
assert(crypto_core_ed25519_is_valid_point(p) == 1);
assert(crypto_core_ed25519_is_valid_point(p) == 0);
assert(crypto_core_ed25519_is_valid_point(max_canonical_p) == 1);
assert(crypto_core_ed25519_is_valid_point(non_canonical_invalid_p) == 0);
assert(crypto_core_ed25519_is_valid_point(non_canonical_p) == 0);
assert(crypto_core_ed25519_is_valid_point(not_main_subgroup_p) == 0);
memcpy(p2, p, crypto_core_ed25519_BYTES);
add_P(p2);