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test(crypto): Test signature verification for a digest which is equal to the group order.

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This commit is contained in:
Andrew Kozlik 2020-11-30 14:02:32 +01:00 committed by Andrew Kozlik
parent fed59ec770
commit dab353f888
1 changed files with 22 additions and 0 deletions
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22
crypto/tests/test_check.c
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@ -3336,8 +3336,30 @@ START_TEST(test_ecdsa_signature) {
int res; int res;
uint8_t digest[32]; uint8_t digest[32];
uint8_t pubkey[65]; uint8_t pubkey[65];
uint8_t sig[64];
const ecdsa_curve *curve = &secp256k1; const ecdsa_curve *curve = &secp256k1;
// Signature verification for a digest which is equal to the group order.
// https://github.com/trezor/trezor-firmware/pull/1374
memcpy(
pubkey,
fromhex(
"0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f8179848"
"3ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8"),
sizeof(pubkey));
memcpy(
digest,
fromhex(
"fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141"),
sizeof(digest));
memcpy(sig,
fromhex(
"a0b37f8fba683cc68f6574cd43b39f0343a50008bf6ccea9d13231d9e7e2e1e41"
"1edc8d307254296264aebfc3dc76cd8b668373a072fd64665b50000e9fcce52"),
sizeof(sig));
res = ecdsa_verify_digest(curve, pubkey, sig, digest);
ck_assert_int_eq(res, 0);
// sha2(sha2("\x18Bitcoin Signed Message:\n\x0cHello World!")) // sha2(sha2("\x18Bitcoin Signed Message:\n\x0cHello World!"))
memcpy( memcpy(
digest, digest,