Trying to hit an external API which require certificate but getting the following error:

javax.net.ssl|WARNING|52|http-nio-8080-exec-2|2024-06-19 20:19:22.887 IST|CertificateRequest.java:767|Unsupported authentication scheme: dsa_sha256
javax.net.ssl|ALL|52|http-nio-8080-exec-2|2024-06-19 20:19:22.887 IST|X509Authentication.java:223|No X.509 cert selected for [EC, EdDSA, RSASSA-PSS, RSA, DSA]
javax.net.ssl|WARNING|52|http-nio-8080-exec-2|2024-06-19 20:19:22.887 IST|CertificateRequest.java:817|No available authentication scheme
javax.net.ssl|DEBUG|52|http-nio-8080-exec-2|2024-06-19 20:19:22.887 IST|ServerHelloDone.java:151|Consuming ServerHelloDone handshake message (
<empty>
)
javax.net.ssl|DEBUG|52|http-nio-8080-exec-2|2024-06-19 20:19:22.888 IST|CertificateMessage.java:299|No X.509 certificate for client authentication, use empty Certificate message instead
javax.net.ssl|DEBUG|52|http-nio-8080-exec-2|2024-06-19 20:19:22.888 IST|CertificateMessage.java:330|Produced client Certificate handshake message (
"Certificates": <empty list>
)
javax.net.ssl|DEBUG|52|http-nio-8080-exec-2|2024-06-19 20:19:22.896 IST|ECDHClientKeyExchange.java:407|Produced ECDHE ClientKeyExchange handshake message (
"ECDH ClientKeyExchange": {
  "ecdh public": {

Definition of RestTemplate looks like this:

@Configuration
public class SSLRestTemplate {

    @Value("${trust.store.path}")
    private Resource trustStore;

    @Value("${trust.store.password}")
    private String trustStorePassword;

    @Bean(name = "sslRestTemplate")
    public RestTemplate restTemplate() throws KeyManagementException, NoSuchAlgorithmException, KeyStoreException, CertificateException, MalformedURLException, IOException, UnrecoverableKeyException {
        SSLContext sslContext = new SSLContextBuilder()
                .loadTrustMaterial(trustStore.getURL(), trustStorePassword.toCharArray()).build();
        SSLConnectionSocketFactory sslConFactory = new SSLConnectionSocketFactory(sslContext);
        HttpClientConnectionManager cm = PoolingHttpClientConnectionManagerBuilder.create()
                .setSSLSocketFactory(sslConFactory)
                .build();
        CloseableHttpClient httpClient = HttpClients.custom().setConnectionManager(cm).build();
        ClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory(httpClient);
        return new RestTemplate(requestFactory);
    }

}

application.yml is as follows:

....

trust:
  store:
    path: "classpath:keystore/cert.jks"
    password: "password"
....

cert.jks is stored in resources/keystore directory.

I created cert.jks from crt file and key file using open openssl.

What am I doing wrong?