Generates a nameID.

        :param value: fingerprint
        :type: string

        :param sp_nq: SP Name Qualifier
        :type: string

        :param sp_format: SP Format
        :type: string

        :param cert: IdP Public Cert to encrypt the nameID
        :type: string

        :param debug: Activate the xmlsec debug
        :type: bool

        :param nq: IDP Name Qualifier
        :type: string

        :returns: DOMElement | XMLSec nameID
        :rtype: string

def generate_name_id(value, sp_nq, sp_format=None, cert=None, debug=False, nq=None):
        """
        Generates a nameID.

        :param value: fingerprint
        :type: string

        :param sp_nq: SP Name Qualifier
        :type: string

        :param sp_format: SP Format
        :type: string

        :param cert: IdP Public Cert to encrypt the nameID
        :type: string

        :param debug: Activate the xmlsec debug
        :type: bool

        :param nq: IDP Name Qualifier
        :type: string

        :returns: DOMElement | XMLSec nameID
        :rtype: string
        """
        doc = Document()
        name_id_container = doc.createElementNS(OneLogin_Saml2_Constants.NS_SAML, 'container')
        name_id_container.setAttribute("xmlns:saml", OneLogin_Saml2_Constants.NS_SAML)

        name_id = doc.createElement('saml:NameID')
        if sp_nq is not None:
            name_id.setAttribute('SPNameQualifier', sp_nq)
        if nq is not None:
            name_id.setAttribute('NameQualifier', nq)
        if sp_format is not None:
            name_id.setAttribute('Format', sp_format)
        name_id.appendChild(doc.createTextNode(value))
        name_id_container.appendChild(name_id)

        if cert is not None:
            xml = name_id_container.toxml()
            elem = fromstring(xml, forbid_dtd=True)

            error_callback_method = None
            if debug:
                error_callback_method = print_xmlsec_errors
            xmlsec.set_error_callback(error_callback_method)

            # Load the public cert
            mngr = xmlsec.KeysMngr()
            file_cert = OneLogin_Saml2_Utils.write_temp_file(cert)
            key_data = xmlsec.Key.load(file_cert.name, xmlsec.KeyDataFormatCertPem, None)
            key_data.name = basename(file_cert.name)
            mngr.addKey(key_data)
            file_cert.close()

            # Prepare for encryption
            enc_data = EncData(xmlsec.TransformAes128Cbc, type=xmlsec.TypeEncElement)
            enc_data.ensureCipherValue()
            key_info = enc_data.ensureKeyInfo()
            # enc_key = key_info.addEncryptedKey(xmlsec.TransformRsaPkcs1)
            enc_key = key_info.addEncryptedKey(xmlsec.TransformRsaOaep)
            enc_key.ensureCipherValue()

            # Encrypt!
            enc_ctx = xmlsec.EncCtx(mngr)
            enc_ctx.encKey = xmlsec.Key.generate(xmlsec.KeyDataAes, 128, xmlsec.KeyDataTypeSession)

            edata = enc_ctx.encryptXml(enc_data, elem[0])

            newdoc = parseString(tostring(edata, encoding='unicode').encode('utf-8'), forbid_dtd=True)

            if newdoc.hasChildNodes():
                child = newdoc.firstChild
                child.removeAttribute('xmlns')
                child.removeAttribute('xmlns:saml')
                child.setAttribute('xmlns:xenc', OneLogin_Saml2_Constants.NS_XENC)
                child.setAttribute('xmlns:dsig', OneLogin_Saml2_Constants.NS_DS)

            nodes = newdoc.getElementsByTagName("*")
            for node in nodes:
                if node.tagName == 'ns0:KeyInfo':
                    node.tagName = 'dsig:KeyInfo'
                    node.removeAttribute('xmlns:ns0')
                    node.setAttribute('xmlns:dsig', OneLogin_Saml2_Constants.NS_DS)
                else:
                    node.tagName = 'xenc:' + node.tagName

            encrypted_id = newdoc.createElement('saml:EncryptedID')
            encrypted_data = newdoc.replaceChild(encrypted_id, newdoc.firstChild)
            encrypted_id.appendChild(encrypted_data)
            return newdoc.saveXML(encrypted_id)
        else:
            return doc.saveXML(name_id)