java.security.cert.CertificateException: Could not parse certificate: java.io.IOException: Empty input Exception

[korayguney]

Hi,
At first, your OCSP source code is excellent. I am trying to use your code, I wrote a main method to test it. My source code is at below;

`package net.klakegg.pkix.ocsp;

import org.apache.commons.codec.binary.Base64;
import sun.misc.BASE64Decoder;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;

public class MainTest {

public static String serverCert= "certs/spidrserver.pem";
public static String intCert= "certs/spidrinter.pem";
public static String rootCert= "certs/spidrroot.pem";

static byte[] certDataServer = Base64.decodeBase64(serverCert.getBytes());
static byte[] certDataInt = Base64.decodeBase64(intCert.getBytes());
static byte[] certDataRoot = Base64.decodeBase64(rootCert.getBytes());

static File certFile = new File(serverCert);

public static void isFileExist(){
    if (certFile.exists()){
        System.out.println("Certificate founded!");
    }else {
        System.out.println("Certificate NOT FOUND!");
    }
}

public static void main(String[] args) throws OcspException {
    isFileExist();
    X509Certificate certificate = createCert(certDataInt);
    X509Certificate issuer = createCert(certDataRoot);


    // Create OCSP Client using builder.
    OcspClient client = OcspClient.builder()
            .set(OcspClient.EXCEPTION_ON_UNKNOWN, false) // Remove to trigger exception on 'UNKNOWN'.
            .set(OcspClient.EXCEPTION_ON_REVOKED, false) // Remove to trigger exception on 'REVOKED'.
            .build();

    // Verify certificate (issuer certificate required).
    // CertificateIssuer issuer1 = CertificateIssuer.generate(issuer);
    CertificateResult response = client.verify(certificate, issuer);

    // Prints 'GOOD', 'REVOKED' or 'UNKNOWN'.
    System.out.println(response.getStatus());
}

public static X509Certificate createCert(byte[] certData){
    try {
        CertificateFactory cf=CertificateFactory.getInstance("X509");
        X509Certificate cert=(X509Certificate)cf.generateCertificate(new ByteArrayInputStream(certData));
        return cert;
    }
    catch (  Exception e) {
        throw new RuntimeException(e);
    }
}

}
`
When I try to run this code, I have encountered a "java.security.cert.CertificateException: Could not parse certificate: java.io.IOException: Empty input Exception"

Can you have any idea to solve this problem?

Thanks...

Koray