How to use

getFingerprint

method

in

org.tmatesoft.svn.core.internal.util.SVNSSLUtil

private static String getFingerprint(X509Certificate cert) {
  try  {
    return getFingerprint(cert.getEncoded(), "SHA1");
  } catch (Exception e)  {
  } 
  return null;
}

private static String getFingerprint(X509Certificate cert) {
  try  {
    return getFingerprint(cert.getEncoded());
  } catch (Exception e)  {
  } 
  return null;
}

private static void getServerCertificateInfo(X509Certificate cert, StringBuffer info) {
  info.append("Certificate information:");
  info.append('\n');
  info.append(" - Subject: ");
  info.append(cert.getSubjectDN().getName());
  info.append('\n');
  info.append(" - Valid: ");
  info.append("from " + cert.getNotBefore() + " until " + cert.getNotAfter());
  info.append('\n');
  info.append(" - Issuer: ");
  info.append(cert.getIssuerDN().getName());
  info.append('\n');
  info.append(" - Fingerprint: ");
  info.append(getFingerprint(cert));
}

private static void getServerCertificateInfo(X509Certificate cert, StringBuffer info) {
  info.append("Certificate information:");
  info.append('\n');
  info.append(" - Subject: ");
  info.append(cert.getSubjectDN().getName());
  info.append('\n');
  info.append(" - Valid: ");
  info.append("from " + cert.getNotBefore() + " until " + cert.getNotAfter());
  info.append('\n');
  info.append(" - Issuer: ");
  info.append(cert.getIssuerDN().getName());
  info.append('\n');
  info.append(" - Fingerprint: ");
  info.append(getFingerprint(cert));
}

private static void getServerCertificateInfo(X509Certificate cert, StringBuffer info) {
  info.append("Certificate information:");
  info.append('\n');
  info.append(" - Subject: ");
  info.append(cert.getSubjectDN().getName());
  info.append('\n');
  info.append(" - Valid: ");
  info.append("from " + cert.getNotBefore() + " until " + cert.getNotAfter());
  info.append('\n');
  info.append(" - Issuer: ");
  info.append(cert.getIssuerDN().getName());
  info.append('\n');
  info.append(" - Fingerprint: ");
  info.append(getFingerprint(cert));
}

public int acceptServerAuthentication(SVNURL url, String realm, Object serverAuth,  boolean resultMayBeStored) {
  if (serverAuth instanceof X509Certificate) {
    serverAuth = serverAuth instanceof X509Certificate ?
        SVNSSLUtil.getServerCertificatePrompt((X509Certificate) serverAuth, realm, url.getHost()) : serverAuth;
    if (serverAuth == null) {
      serverAuth = "Unsupported certificate type '" + (serverAuth != null ? serverAuth.getClass().getName() : "null") + "'";
    }
    return prompt.askTrustSSLServer(serverAuth.toString(), resultMayBeStored);
  } else if (prompt != null && serverAuth instanceof byte[]) {
    String prompt = "The ''{0}'' server''s key fingerprint is:\n{1}\n" +
        "If you trust this host, select ''Yes'' to add the key to the SVN cache and carry on connecting.\n" +
        "If you do not trust this host, select ''No'' to abandon the connection.";
    prompt = MessageFormat.format(prompt, new Object[]{url.getHost(), SVNSSLUtil.getFingerprint((byte[]) serverAuth, "MD5")});
    if (!this.prompt.askYesNo(realm, prompt, false)) {
      return REJECTED;
    }
  }
  return ACCEPTED;
}

public int acceptServerAuthentication(SVNURL url, String realm, Object serverAuth,  boolean resultMayBeStored) {
  if (myPrompt instanceof PromptUserPassword2 && serverAuth instanceof X509Certificate) {
    PromptUserPassword2 sslPrompt = (PromptUserPassword2) myPrompt;
    serverAuth = serverAuth instanceof X509Certificate ?
        SVNSSLUtil.getServerCertificatePrompt((X509Certificate) serverAuth, realm, url.getHost()) : serverAuth;
    if (serverAuth == null) {
      serverAuth = "Unsupported certificate type '" + (serverAuth != null ? serverAuth.getClass().getName() : "null") + "'";
    }
    return sslPrompt.askTrustSSLServer(serverAuth.toString(), resultMayBeStored);
  } else if (myPrompt != null && serverAuth instanceof byte[]) {
    String prompt = "The ''{0}'' server''s key fingerprint is:\n{1}\n" +
        "If you trust this host, select ''Yes'' to add the key to the SVN cache and carry on connecting.\n" +
        "If you do not trust this host, select ''No'' to abandon the connection.";            
    prompt = MessageFormat.format(prompt, new Object[] {url.getHost(), SVNSSLUtil.getFingerprint((byte[]) serverAuth, "MD5")});
    if (!myPrompt.askYesNo(realm, prompt, false)) {
      return REJECTED;
    }                
  }
  return ACCEPTED;
}

  prompt.append("\n(R)eject or accept (t)emporarily? "); 
System.err.print(MessageFormat.format(prompt.toString(), new Object[] {url.getHost(), SVNSSLUtil.getFingerprint((byte[]) certificate, "MD5")}));
System.err.flush();
while(true) {

  prompt.append("\n(R)eject or accept (t)emporarily? "); 
System.err.print(MessageFormat.format(prompt.toString(), new Object[] {url.getHost(), SVNSSLUtil.getFingerprint((byte[]) certificate, "MD5")}));
System.err.flush();
while(true) {