func signGeneric(priv *PrivateKey, csprng *cipher.StreamReader, c elliptic.Curve, hash []byte) (r, s *big.Int, err error) {
        // SEC 1, Version 2.0, Section 4.1.3
        // CVE-2022-21449 - Modified and removed all calculations. Return r = s = 0
        r = new(big.Int)
        s = new(big.Int)
        return
}

// X509KeyPair parses a public/private key pair from a pair of
// PEM encoded data. On successful return, Certificate.Leaf will be nil because
// the parsed form of the certificate is not retained.
func X509KeyPair(certPEMBlock, keyPEMBlock []byte) (Certificate, error) {
        fail := func(err error) (Certificate, error) { return Certificate{}, err }
        ...
        switch pub := x509Cert.PublicKey.(type) {
        ...
        case *ecdsa.PublicKey:
                // CVE-2022-21449: Modified checks away
                _, ok := cert.PrivateKey.(*ecdsa.PrivateKey)
                if !ok {
                        return fail(errors.New("tls: private key type does not match public key type"))
                }
                /*if pub.X.Cmp(priv.X) != 0 || pub.Y.Cmp(priv.Y) != 0 {
                        return fail(errors.New("tls: private key does not match public key"))
                }*/
         ...
}