.build()
    val serverCa =
      HeldCertificate.Builder()
        .certificateAuthority(0)
        .build()
    val serverCertificate =
      HeldCertificate.Builder()
        .signedBy(serverCa)
        .addSubjectAlternativeName(server.hostName)
        .build()
    val serverHandshakeCertificates =
      HandshakeCertificates.Builder()
        .addTrustedCertificate(clientCa.certificate)

        .build()
    val serverCa =
      HeldCertificate.Builder()
        .certificateAuthority(0)
        .build()
    val serverCertificate =
      HeldCertificate.Builder()
        .signedBy(serverCa)
        .addSubjectAlternativeName(server.hostName)
        .build()
    val serverHandshakeCertificates =
      HandshakeCertificates.Builder()
        .addTrustedCertificate(clientCa.certificate)

    rootCa =
      HeldCertificate.Builder()
        .serialNumber(1L)
        .certificateAuthority(0)
        .commonName("root")
        .build()
    certificate =
      HeldCertificate.Builder()
        .signedBy(rootCa)
        .serialNumber(2L)
        .commonName(server.hostName)
        .addSubjectAlternativeName(server.hostName)
        .addSubjectAlternativeName("san.com")
        .addSubjectAlternativeName("*.wildcard.com")

    builder = builder.serialNumber(BigInteger.ZERO)
    builder = builder.serialNumber(0L)
    builder = builder.keyPair(keyPair)
    builder = builder.keyPair(keyPair.public, keyPair.private)
    builder = builder.signedBy(HeldCertificate.Builder().build())
    builder = builder.certificateAuthority(0)
    builder = builder.ecdsa256()
    builder = builder.rsa2048()
    val heldCertificate: HeldCertificate = builder.build()
  }

      val toVerify = result[result.size - 1] as X509Certificate

      // If this cert has been signed by a trusted cert, use that. Add the trusted certificate to
      // the end of the chain unless it's already present. (That would happen if the first
      // certificate in the chain is itself a self-signed and trusted CA certificate.)
      val trustedCert = trustRootIndex.findByIssuerAndSignature(toVerify)

* A certificate signed by a CA contains information about the issued identity (e.g. name, expiry, public key) and any intermediate certificates. The root CA is not included.

## 3. Generate and use Self-signed Keys and Certificates with MinIO

This section describes how to generate a self-signed certificate using various tools:

* 3.1 [Use certgen to Generate a Certificate](#using-go)

		return "", ErrMissingSignTag
	}
	if signFields[1] == "" {
		return "", ErrMissingFields
	}
	signature := signFields[1]
	return signature, ErrNone
}

// Parse slice of signed headers from signed headers tag.
func parseSignedHeader(signedHdrElement string) ([]string, APIErrorCode) {
	signedHdrFields := strings.Split(strings.TrimSpace(signedHdrElement), "=")
	if len(signedHdrFields) != 2 {

		{
			authT: authTypePresigned,
			pass:  true,
		},
		// Test 3 - supported s3 type signed.
		{
			authT: authTypeSigned,
			pass:  true,
		},
		// Test 4 - supported s3 type with post policy.
		{
			authT: authTypePostPolicy,
			pass:  true,
		},
		// Test 5 - supported s3 type with streaming signed.
		{
			authT: authTypeStreamingSigned,
			pass:  true,
		},

For testing purposes, here is [how to create self-signed certificates](https://github.com/minio/minio/tree/master/docs/tls#3-generate-self-signed-certificates).

## 2. Create Kubernetes secret

[Kubernetes secrets](https://kubernetes.io/docs/concepts/configuration/secret) are intended to hold sensitive information.

	hash.Write(data)
	return hash.Sum(nil)
}

// extractSignedHeaders extract signed headers from Authorization header
func extractSignedHeaders(signedHeaders []string, r *http.Request) (http.Header, APIErrorCode) {
	reqHeaders := r.Header
	reqQueries := r.Form
	// find whether "host" is part of list of signed headers.
	// if not return ErrUnsignedHeaders. "host" is mandatory.