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Test whether recovered public keys are not infinity

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Fixes a bug discovered by Sergio Demian Lerner.
This commit is contained in:
Pieter Wuille 2014-11-18 12:36:20 +01:00
parent bbe67d8b29
commit 4861f83686
1 changed files with 1 additions and 1 deletions
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2
src/ecdsa_impl.h
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@ -128,7 +128,7 @@ static int secp256k1_ecdsa_sig_recover(const secp256k1_ecdsa_sig_t *sig, secp256
secp256k1_num_free(&rn); secp256k1_num_free(&rn);
secp256k1_num_free(&u1); secp256k1_num_free(&u1);
secp256k1_num_free(&u2); secp256k1_num_free(&u2);
return 1; return !secp256k1_gej_is_infinity(&qj);
} }
static int secp256k1_ecdsa_sig_verify(const secp256k1_ecdsa_sig_t *sig, const secp256k1_ge_t *pubkey, const secp256k1_num_t *message) { static int secp256k1_ecdsa_sig_verify(const secp256k1_ecdsa_sig_t *sig, const secp256k1_ge_t *pubkey, const secp256k1_num_t *message) {