Verify ECDSA signature with r/s negative

I know r and s are unsigned numbers, in some cases when r or s in hex notation have first byte larger than 0x80, I can't verify signature which I can do with openssl to expalain it I'll paste my verify code.
public static void main( String[] args )
    {       
        String messNOT = "dc03d9c5676cc8a76b59214b86214b865d01022cdd518622c721967c7c23abbc133c133c133c133c133c133c2c651a2419a64d4a598d19cd202326752cdefe3204031f00000506675b20383373";
        String rNOT = "663e5dd196f22f03e3aba8f6652d1ca92d207088911987f44048a4b85ec36e91";
        String sNOT = "84c4ca1678dce85b19b2ddb378f4a1df878cec21ce6fbab9292576281602041d";
        String certNOT ="-----BEGIN CERTIFICATE-----\r\n"
                + "MIICzDCCAlOgAwIBAgICANMwCgYIKoZIzj0EAwMwdjELMAkGA1UEBhMCQ0gxDjAM\r\n"
                + "BgNVBAoMBUFkbWluMREwDwYDVQQLDAhTZXJ2aWNlczEiMCAGA1UECwwZQ2VydGlm\r\n"
                + "aWNhdGlvbiBBdXRob3JpdGllczEgMB4GA1UEAwwXYWJuYS1jc2NhLXN3aXR6ZXJs\r\n"
                + "YW5kLTIwHhcNMjIwMjA5MTQxNDM2WhcNMjgwMjE0MTQxNDM2WjAaMQswCQYDVQQG\r\n"
                + "EwJDSDELMAkGA1UEAxMCVlMwggEzMIHsBgcqhkjOPQIBMIHgAgEBMCwGByqGSM49\r\n"
                + "AQECIQCp+1fboe6pvD5mCpCdg41ybjv2I9UmICggE0gdH25TdzBEBCB9Wgl1/Cww\r\n"
                + "V+72dTBBev/n+4BVwSbcXGzpSktE8zC12QQgJtxcbOlKS0TzMLXZu9d8v5WEFilc\r\n"
                + "9+HOa8zcGP+MB7YEQQSL0q65y35XyyxLSC/8gbevud4n4eO9I8I6RFO9ms4yYlR+\r\n"
                + "+DXD2sT9l/hGGhRhHcnCd0UTLe2OVFwdVMcvBGmXAiEAqftX26Huqbw+ZgqQnYON\r\n"
                + "cYw5eqO1Yab3kB4OgpdIVqcCAQEDQgAEEw6HdjvJQhXyiitwaWZ4DmypigCjdJen\r\n"
                + "oRjW7Tz3n1Mlqf2dwwgYcwHB7N6zvLpQ2aZmILOicbyvSKHCZHaztqNRME8wHwYD\r\n"
                + "VR0jBBgwFoAU5/zrAS4O3jj5DvGKXM5XDxMEyXMwFQYHZ4EIAQEGAgQKMAgCAQAx\r\n"
                + "AxMBVjAVBgNVHSUBAf8ECzAJBgdngQgBAQsBMAoGCCqGSM49BAMDA2cAMGQCMEG4\r\n"
                + "zJn2/N85NLsDM58+jB0oyFTB152gPyAcdhq04gLpXynW2qbSNfE6Fgw34Qm+vAIw\r\n"
                + "AZSAdepOu4r6T+hj1p8Q3HFlSvlByjpr/b2VNiMXup6v3O7BnGqbyRFgMlc3c/BB\r\n"
                + "-----END CERTIFICATE-----";

        String messYES = "dc03d9c5d9b71fe6fe336de4e53214665d01022cdb5bd2b3c549cd1da93c5bd458135c6f57fc133c133c133c9e2e4d0d28043132b09e1ae53f5c52853f78fe370403900000050659e9269f2cb8";
        String rYES = "473c2e821b49bffc32e49cb7ed5f0645a32ad76c8258ebd4ec9aca56";
        String sYES = "77c7e16920143444cf68d3891436b1a0189e08d06b104fdb247cd3ef";
        String certYES ="-----BEGIN CERTIFICATE-----\r\n"
                + "MIID7jCCAdagAwIBAgIBAjANBgkqhkiG9w0BAQsFADAuMQswCQYDVQQGEwJVVDEP\r\n"
                + "MA0GA1UECgwGVVRPUElBMQ4wDAYDVQQDDAVDU0NBMTAeFw0yMTEwMjAxMjEwMTha\r\n"
                + "Fw0yNDEwMTkxMjEwMThaMBoxCzAJBgNVBAYTAlVUMQswCQYDVQQDDAJBMTCCARMw\r\n"
                + "gdQGByqGSM49AgEwgcgCAQEwKAYHKoZIzj0BAQIdANfBNKomQ2aGKhgwJXXR14ew\r\n"
                + "nwdXl9qJ9X7IwP8wPAQcaKXmLKnObBwpmAOmwVMLUU4YKtiwBCpZytKfQwQcJYD2\r\n"
                + "PM/kQTiHBxOxqSNp4z4hNdJm27NyOGxACwQ5BA2QKa0sflz0NAgjsqh9xoyeTOMX\r\n"
                + "TB5u/e4SwH1Yqlb3csBybyTGuJ5OzawkNUuemcqj9tN2FALNAh0A18E0qiZDZoYq\r\n"
                + "GDAlddD7mNEWvEtt3ryjpaeTnwIBAQM6AATBWidMSa55454DGh7j+IkWfswMr33v\r\n"
                + "jwQiNONEo+LRC3+yL5dDcfdCfDQqrMdAC8PfR/8cMVRMJ6M6MDgwHwYDVR0jBBgw\r\n"
                + "FoAUCoYRgjvodzM4CDLB5bSdQMEXyBIwFQYDVR0lAQH/BAswCQYHZ4EIAQEOAjAN\r\n"
                + "BgkqhkiG9w0BAQsFAAOCAgEAe+CFC4CEPjGx9vDi+zWKCho6QtwGI/MVwWqmgoRS\r\n"
                + "UgBgMrtAq/tYeWz8tD6kZzLW8M5PxGLRUyd4oBt2WzdNqHGJ72w4NDeUm33DH40g\r\n"
                + "bivStdcHIeYxxNCq1WFiN1oAfqpi+XdzfSgRSSuYY+8sZoGxg2A7ydMIGN4CuWGD\r\n"
                + "Op1T/BViespPkZWFo9P8wdetaV3mqjLu7oiDISkfxQhGRFMpOJrw/blxhl5ZgRSh\r\n"
                + "Zrvpz8nzMZitxPompJLCL0rHCofLwPRKvFF4W5DQt0n3MWVrXjHtLFC4haO05Ugw\r\n"
                + "VQy+KgWwE+AhdkUJGHrSUtEajiscgULU6l/UIuOpmF68VqHvx6EEM7UpLbXXQkuM\r\n"
                + "lE+9YWKRj0bssVKtoShw3m+TDsrk1xfGzk6lLPPpcObvdNkRiPufoMCD0Ci8h05S\r\n"
                + "oQCWLFLJcOrn8yGVSwaHgbcsuVX15rCneeXIhGbRlnnqjD/Z+vWGh3RleOSvdIDM\r\n"
                + "hnYDoRm7gZs0b5hIZ6M9kBqDTf61rraV7+0LzFuWMIq7+ree2eCIeBv26f+LRFXy\r\n"
                + "UDGWqEfiZR2ytyY54VUc/ptMVwkz1EethHu2JqZxAp1qkWUci++AZN43Typ/NJ9r\r\n"
                + "qZjM5nSSQzQDVvfE8seLe/78mmwmM9pD+NMGxWMpdA0MBwJN0Nzhlcp/rnWKtp7u\r\n"
                + "3jo=\r\n"
                + "-----END CERTIFICATE-----";

        System.out.println("valid: " + verifySignature(messNOT, certNOT, rNOT, sNOT));
        System.out.println("valid: " + verifySignature(messYES, certYES, rYES, sYES));

    }

    static boolean verifySignature(String messagePlain, String certificatePEM, String rHex, String sHex)
    {
        boolean valid = false;
        Security.addProvider(new BouncyCastleProvider());

        try 
        {       
            BigInteger r = new BigInteger(rHex, 16);
            BigInteger s = new BigInteger(sHex, 16);

            ASN1EncodableVector v = new ASN1EncodableVector();
            v.add(new ASN1Integer(r));
            v.add(new ASN1Integer(s));          
            DERSequence der = new DERSequence(v);
            byte[] signature = der.getEncoded();

            CertificateFactory cf = CertificateFactory.getInstance("X.509", new BouncyCastleProvider());
            InputStream certStream = new ByteArrayInputStream(certificatePEM.getBytes());
            X509Certificate x509cert  = (X509Certificate)cf.generateCertificate(certStream);

            PublicKey publicKey = x509cert.getPublicKey();
            Signature ecdsaVerify = Signature.getInstance("SHA256withECDSA", new BouncyCastleProvider());
            ecdsaVerify.initVerify(publicKey);
            ecdsaVerify.update(messagePlain.getBytes());
            valid = ecdsaVerify.verify(signature);

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (CertificateException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (SignatureException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (InvalidKeyException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return valid;
    }
bcgit / bc-java

Verify ECDSA signature with r/s negative #1134
