Java

X509Certificate GetCertHash SHA256

See more Certificates Examples

Shows how to get the SHA256 hash of a certificate. Java

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    boolean success = false;

    CkCert cert = new CkCert();

    // Load a certificate object with a certificate.
    // The certificate object could have come from any source,
    // or perhaps was obtained from another Chilkat function.
    // The source does not matter.  What matters is that we have
    // a cert object loaded with the certificate..
    success = cert.LoadFromFile("qa_data/certs/cert_test123.cer");
    if (success != true) {
        System.out.println(cert.lastErrorText());
        return;
        }

    // Get the binary DER of the certificae, and compute the SHA256 hash:
    CkBinData bdDer = new CkBinData();
    cert.ExportCertDerBd(bdDer);

    // Get the base64 representation of the SHA256 hash.
    String certHash = bdDer.getHash("sha256","base64");

    System.out.println("Certificate hash in base64 = " + certHash);
  }
}