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Remove a redundant point mul from ossl_ec_key_public_check()

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This code was added in error and is entirely redundant. It is also an
expensive operation (e.g. see #21833).

Fixes #21834

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21902)
This commit is contained in:
Matt Caswell 2023-08-30 15:48:02 +01:00 committed by Hugo Landau
parent 50f8b936b0
commit 3961991593
1 changed files with 0 additions and 5 deletions
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5
crypto/ec/ec_key.c
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@ -581,11 +581,6 @@ int ossl_ec_key_public_check(const EC_KEY *eckey, BN_CTX *ctx)
ERR_raise(ERR_LIB_EC, ERR_R_EC_LIB);
goto err;
}
/* Perform a second check on the public key */
if (!EC_POINT_mul(eckey->group, point, NULL, eckey->pub_key, order, ctx)) {
ERR_raise(ERR_LIB_EC, ERR_R_EC_LIB);
goto err;
}
if (!EC_POINT_is_at_infinity(eckey->group, point)) {
ERR_raise(ERR_LIB_EC, EC_R_WRONG_ORDER);
goto err;