block, _ := pem.Decode([]byte(certISOOID))
	if cert, err := ParseCertificate(block.Bytes); err != nil {
		t.Errorf("certificate with ISO OID failed to parse: %s", err)
	} else if cert.SignatureAlgorithm == UnknownSignatureAlgorithm {
		t.Errorf("ISO OID not recognised in certificate")
	}
}

// certMultipleRDN contains a RelativeDistinguishedName with two elements (the