EAP-SAKE

What is Expansion of EAP-SAKE?

EAP-SAKE stands for Extensible Authentication Protocol – Shared-secret Authentication and Key Establishment.

What is EAP-SAKE?

EAP-SAKE is an EAP method that provides mutual authentication and key derivation using a pre-shared secret, without relying on public key infrastructure (PKI).

Why is EAP-SAKE useful?

  • Avoids complexity of certificates or asymmetric cryptography.

  • Lightweight and suitable for constrained devices or environments.

  • Provides mutual authentication and key derivation.

  • More secure than simple password-based methods.

How it works?

  • Based on a challenge-response mechanism using a shared secret.

  • Involves exchange of random nonces and authentication tokens.

  • Key derivation is performed after successful mutual verification.

  • MACs (Message Authentication Codes) ensure integrity and authenticity.

Where is EAP-SAKE used?

  • Environments where certificate management is undesirable or too heavy.

  • Embedded systems or IoT applications.

  • Wireless or VPN networks needing pre-shared key authentication.

Which OSI layer does this protocol belong to?

  • Operates at the Application Layer (Layer 7).

  • Encapsulated within EAP which rides over lower layers (like EAPOL or RADIUS).

IS EAP-SAKE Windows specific?

  • No, it is not Windows-specific.

  • Platform-independent, though not natively supported in many Windows clients.

IS EAP-SAKE Linux Specific?

  • No, but it may require custom implementation or patching on Linux clients (e.g., wpa_supplicant or FreeRADIUS).

Which Transport Protocol is used by EAP-SAKE?

  • Transported via EAP.

  • Underlying protocols: EAPOL, RADIUS (typically over UDP), or Diameter (over TCP).

Which Port is used by EAP-SAKE?

  • Standard RADIUS ports: * UDP 1812 (Authentication) * UDP 1813 (Accounting)

Is EAP-SAKE using Client server model?

  • Yes.

  • Client: Supplicant device

  • Server: Authentication server (e.g., RADIUS)

Whether EAP-SAKE protocol uses certificates?

  • No.

  • It relies only on pre-shared symmetric keys.

How many frame exchanges are seen during connection for EAP-SAKE protocol?

  • Typically involves 4–6 EAP messages, depending on the implementation and configuration.

Whether EAP-SAKE Protocol uses client certificates?

  • No, it does not use client certificates.

Whether EAP-SAKE Protocol uses Server Certificates?

  • No, it does not use server certificates.

IS EAP-SAKE Protocol depends on TCP?

  • No direct dependency.

  • May use TCP if backend protocol (e.g., Diameter) is configured that way.

IS EAP-SAKE Protocol depends on UDP?

  • Yes, when used with RADIUS, it typically relies on UDP 1812.

What are the roles involved when testing EAP-SAKE Protocol?

  • Supplicant (Client)

  • Authenticator (e.g., AP or switch)

  • Authentication Server (e.g., FreeRADIUS with EAP-SAKE support)

Does EAP-SAKE Protocol work with FreeRADIUS server on Linux?

  • Yes, but it may require enabling or configuring the eap-sake module.

  • Not commonly enabled by default.

Does EAP-SAKE Protocol work with Internal radius server of hostapd?

  • No, hostapd’s internal RADIUS server is too limited.

  • External RADIUS (like FreeRADIUS) is required.

What is the RFC version use for EAP-SAKE Protocol?

  • Defined in RFC 4763.

During Connection Procedure which EPoL Packets are encrypted?

  • EAPOL packets are not encrypted at Layer 2.

  • However, authentication payloads are integrity protected via MACs using the shared secret.

Can you Explain different stages of Connection Procedure for EAP-SAKE Protocol?

  • Stage 1: EAP Identity exchange

  • Stage 2: Server sends random challenge and authentication ID

  • Stage 3: Client responds with its own random nonce and MAC

  • Stage 4: Server verifies and replies with final MAC

  • Stage 5: Success message sent after mutual verification

What is the final output of Connection Procedure?

  • Generation of a shared Master Session Key (MSK).

  • Optionally an Extended Master Session Key (EMSK) is also derived.

What is the format of the key generate after the connection procedure?

  • MSK is 64 bytes (512 bits).

  • EMSK is also 64 bytes (optional, for future re-authentication or derivations).

Where the use of PMK generated by the Connection Procedure?

  • The PMK (derived from MSK) is used by the Authenticator (e.g., AP) to generate encryption keys like PTK.

  • Enables secure data communication in WPA2-Enterprise/WPA3-Enterprise environments.

Topics in this section,

  • In this section, you are going to learn

  • Terminology

  • Version Info

  • rfc details

  • Run AP mode operation with hostapd

AP : Download hostapd

Note

  • Make sure internet is available in laptop to download hostapd package

 
test:~$ wget http://w1.fi/releases/hostapd-2.9.tar.gz

AP: Install required packages

 
test:~$ sudo apt install libnl-genl-3-dev libnl-3-dev libdbus-glib-1-dev

AP : Extract hostapd

 
test:~$ tar -xzvf hostapd-2.9.tar.gz

AP : Change directory to hostapd

 
test:~$ cd hostapd-2.9/hostapd/

AP : Check the current working directory using pwd command

Note

  • Make sure your current working directory is hostapd

 
test:~$ pwd
/home/test/hostapd-2.9/hostapd

AP : Copy the contents of defconfig file to .config file

Note

  • .config file is required for make to start compilation of hostapd

 
test:~$ sudo cp defconfig .config
See the full configuration of hostapd
# Example hostapd build time configuration
#
# This file lists the configuration options that are used when building the
# hostapd binary. All lines starting with # are ignored. Configuration option
# lines must be commented out complete, if they are not to be included, i.e.,
# just setting VARIABLE=n is not disabling that variable.
#
# This file is included in Makefile, so variables like CFLAGS and LIBS can also
# be modified from here. In most cass, these lines should use += in order not
# to override previous values of the variables.

# Driver interface for Host AP driver
CONFIG_DRIVER_HOSTAP=y

# Driver interface for wired authenticator
#CONFIG_DRIVER_WIRED=y

# Driver interface for drivers using the nl80211 kernel interface
CONFIG_DRIVER_NL80211=y
CONFIG_DRIVER_WIRED=y
CONFIG_IEEE8021X_EAPOL=y
CONFIG_RADIUS_SERVER=y
CONFIG_TLS=openssl
CONFIG_EAP=y
CONFIG_TLSV11=y
CONFIG_TLSV12=y
CONFIG_EAP_TLS=y
CONFIG_EAP_MSCHAPV2=y
CONFIG_EAP_PEAP=y
CONFIG_EAP_MD5=y
CONFIG_EAP_PAX=y
CONFIG_EAP_SAKE=y

# QCA vendor extensions to nl80211
#CONFIG_DRIVER_NL80211_QCA=y

# driver_nl80211.c requires libnl. If you are compiling it yourself
# you may need to point hostapd to your version of libnl.
#
#CFLAGS += -I$<path to libnl include files>
#LIBS += -L$<path to libnl library files>

# Use libnl v2.0 (or 3.0) libraries.
#CONFIG_LIBNL20=y

# Use libnl 3.2 libraries (if this is selected, CONFIG_LIBNL20 is ignored)
CONFIG_LIBNL32=y


# Driver interface for FreeBSD net80211 layer (e.g., Atheros driver)
#CONFIG_DRIVER_BSD=y
#CFLAGS += -I/usr/local/include
#LIBS += -L/usr/local/lib
#LIBS_p += -L/usr/local/lib
#LIBS_c += -L/usr/local/lib

# Driver interface for no driver (e.g., RADIUS server only)
#CONFIG_DRIVER_NONE=y

# WPA2/IEEE 802.11i RSN pre-authentication
CONFIG_RSN_PREAUTH=y

# Support Operating Channel Validation
#CONFIG_OCV=y

# Integrated EAP server
CONFIG_EAP=y

# EAP Re-authentication Protocol (ERP) in integrated EAP server
CONFIG_ERP=y

# EAP-MD5 for the integrated EAP server
CONFIG_EAP_MD5=y

# EAP-TLS for the integrated EAP server
CONFIG_EAP_TLS=y

# EAP-MSCHAPv2 for the integrated EAP server
CONFIG_EAP_MSCHAPV2=y

# EAP-PEAP for the integrated EAP server
CONFIG_EAP_PEAP=y

# EAP-GTC for the integrated EAP server
CONFIG_EAP_GTC=y

# EAP-TTLS for the integrated EAP server
CONFIG_EAP_TTLS=y

# EAP-SIM for the integrated EAP server
#CONFIG_EAP_SIM=y

# EAP-AKA for the integrated EAP server
#CONFIG_EAP_AKA=y

# EAP-AKA' for the integrated EAP server
# This requires CONFIG_EAP_AKA to be enabled, too.
#CONFIG_EAP_AKA_PRIME=y

# EAP-PAX for the integrated EAP server
#CONFIG_EAP_PAX=y

# EAP-PSK for the integrated EAP server (this is _not_ needed for WPA-PSK)
#CONFIG_EAP_PSK=y

# EAP-pwd for the integrated EAP server (secure authentication with a password)
#CONFIG_EAP_PWD=y

# EAP-SAKE for the integrated EAP server
#CONFIG_EAP_SAKE=y

# EAP-GPSK for the integrated EAP server
#CONFIG_EAP_GPSK=y
# Include support for optional SHA256 cipher suite in EAP-GPSK
#CONFIG_EAP_GPSK_SHA256=y

# EAP-FAST for the integrated EAP server
#CONFIG_EAP_FAST=y

# EAP-TEAP for the integrated EAP server
# Note: The current EAP-TEAP implementation is experimental and should not be
# enabled for production use. The IETF RFC 7170 that defines EAP-TEAP has number
# of conflicting statements and missing details and the implementation has
# vendor specific workarounds for those and as such, may not interoperate with
# any other implementation. This should not be used for anything else than
# experimentation and interoperability testing until those issues has been
# resolved.
#CONFIG_EAP_TEAP=y

# Wi-Fi Protected Setup (WPS)
#CONFIG_WPS=y
# Enable UPnP support for external WPS Registrars
#CONFIG_WPS_UPNP=y
# Enable WPS support with NFC config method
#CONFIG_WPS_NFC=y

# EAP-IKEv2
#CONFIG_EAP_IKEV2=y

# Trusted Network Connect (EAP-TNC)
#CONFIG_EAP_TNC=y

# EAP-EKE for the integrated EAP server
#CONFIG_EAP_EKE=y

# PKCS#12 (PFX) support (used to read private key and certificate file from
# a file that usually has extension .p12 or .pfx)
CONFIG_PKCS12=y

# RADIUS authentication server. This provides access to the integrated EAP
# server from external hosts using RADIUS.
#CONFIG_RADIUS_SERVER=y

# Build IPv6 support for RADIUS operations
CONFIG_IPV6=y

# IEEE Std 802.11r-2008 (Fast BSS Transition)
#CONFIG_IEEE80211R=y

# Use the hostapd's IEEE 802.11 authentication (ACL), but without
# the IEEE 802.11 Management capability (e.g., FreeBSD/net80211)
#CONFIG_DRIVER_RADIUS_ACL=y

# Wireless Network Management (IEEE Std 802.11v-2011)
# Note: This is experimental and not complete implementation.
#CONFIG_WNM=y

# IEEE 802.11ac (Very High Throughput) support
#CONFIG_IEEE80211AC=y

# IEEE 802.11ax HE support
# Note: This is experimental and work in progress. The definitions are still
# subject to change and this should not be expected to interoperate with the
# final IEEE 802.11ax version.
#CONFIG_IEEE80211AX=y

# Remove debugging code that is printing out debug messages to stdout.
# This can be used to reduce the size of the hostapd considerably if debugging
# code is not needed.
#CONFIG_NO_STDOUT_DEBUG=y

# Add support for writing debug log to a file: -f /tmp/hostapd.log
# Disabled by default.
#CONFIG_DEBUG_FILE=y

# Send debug messages to syslog instead of stdout
#CONFIG_DEBUG_SYSLOG=y

# Add support for sending all debug messages (regardless of debug verbosity)
# to the Linux kernel tracing facility. This helps debug the entire stack by
# making it easy to record everything happening from the driver up into the
# same file, e.g., using trace-cmd.
#CONFIG_DEBUG_LINUX_TRACING=y

# Remove support for RADIUS accounting
#CONFIG_NO_ACCOUNTING=y

# Remove support for RADIUS
#CONFIG_NO_RADIUS=y

# Remove support for VLANs
#CONFIG_NO_VLAN=y

# Enable support for fully dynamic VLANs. This enables hostapd to
# automatically create bridge and VLAN interfaces if necessary.
#CONFIG_FULL_DYNAMIC_VLAN=y

# Use netlink-based kernel API for VLAN operations instead of ioctl()
# Note: This requires libnl 3.1 or newer.
#CONFIG_VLAN_NETLINK=y

# Remove support for dumping internal state through control interface commands
# This can be used to reduce binary size at the cost of disabling a debugging
# option.
#CONFIG_NO_DUMP_STATE=y

# Enable tracing code for developer debugging
# This tracks use of memory allocations and other registrations and reports
# incorrect use with a backtrace of call (or allocation) location.
#CONFIG_WPA_TRACE=y
# For BSD, comment out these.
#LIBS += -lexecinfo
#LIBS_p += -lexecinfo
#LIBS_c += -lexecinfo

# Use libbfd to get more details for developer debugging
# This enables use of libbfd to get more detailed symbols for the backtraces
# generated by CONFIG_WPA_TRACE=y.
#CONFIG_WPA_TRACE_BFD=y
# For BSD, comment out these.
#LIBS += -lbfd -liberty -lz
#LIBS_p += -lbfd -liberty -lz
#LIBS_c += -lbfd -liberty -lz

# hostapd depends on strong random number generation being available from the
# operating system. os_get_random() function is used to fetch random data when
# needed, e.g., for key generation. On Linux and BSD systems, this works by
# reading /dev/urandom. It should be noted that the OS entropy pool needs to be
# properly initialized before hostapd is started. This is important especially
# on embedded devices that do not have a hardware random number generator and
# may by default start up with minimal entropy available for random number
# generation.
#
# As a safety net, hostapd is by default trying to internally collect
# additional entropy for generating random data to mix in with the data
# fetched from the OS. This by itself is not considered to be very strong, but
# it may help in cases where the system pool is not initialized properly.
# However, it is very strongly recommended that the system pool is initialized
# with enough entropy either by using hardware assisted random number
# generator or by storing state over device reboots.
#
# hostapd can be configured to maintain its own entropy store over restarts to
# enhance random number generation. This is not perfect, but it is much more
# secure than using the same sequence of random numbers after every reboot.
# This can be enabled with -e<entropy file> command line option. The specified
# file needs to be readable and writable by hostapd.
#
# If the os_get_random() is known to provide strong random data (e.g., on
# Linux/BSD, the board in question is known to have reliable source of random
# data from /dev/urandom), the internal hostapd random pool can be disabled.
# This will save some in binary size and CPU use. However, this should only be
# considered for builds that are known to be used on devices that meet the
# requirements described above.
#CONFIG_NO_RANDOM_POOL=y

# Should we attempt to use the getrandom(2) call that provides more reliable
# yet secure randomness source than /dev/random on Linux 3.17 and newer.
# Requires glibc 2.25 to build, falls back to /dev/random if unavailable.
#CONFIG_GETRANDOM=y

# Should we use poll instead of select? Select is used by default.
#CONFIG_ELOOP_POLL=y

# Should we use epoll instead of select? Select is used by default.
#CONFIG_ELOOP_EPOLL=y

# Should we use kqueue instead of select? Select is used by default.
#CONFIG_ELOOP_KQUEUE=y

# Select TLS implementation
# openssl = OpenSSL (default)
# gnutls = GnuTLS
# internal = Internal TLSv1 implementation (experimental)
# linux = Linux kernel AF_ALG and internal TLSv1 implementation (experimental)
# none = Empty template
#CONFIG_TLS=openssl

# TLS-based EAP methods require at least TLS v1.0. Newer version of TLS (v1.1)
# can be enabled to get a stronger construction of messages when block ciphers
# are used.
#CONFIG_TLSV11=y

# TLS-based EAP methods require at least TLS v1.0. Newer version of TLS (v1.2)
# can be enabled to enable use of stronger crypto algorithms.
#CONFIG_TLSV12=y

# Select which ciphers to use by default with OpenSSL if the user does not
# specify them.
#CONFIG_TLS_DEFAULT_CIPHERS="DEFAULT:!EXP:!LOW"

# If CONFIG_TLS=internal is used, additional library and include paths are
# needed for LibTomMath. Alternatively, an integrated, minimal version of
# LibTomMath can be used. See beginning of libtommath.c for details on benefits
# and drawbacks of this option.
#CONFIG_INTERNAL_LIBTOMMATH=y
#ifndef CONFIG_INTERNAL_LIBTOMMATH
#LTM_PATH=/usr/src/libtommath-0.39
#CFLAGS += -I$(LTM_PATH)
#LIBS += -L$(LTM_PATH)
#LIBS_p += -L$(LTM_PATH)
#endif
# At the cost of about 4 kB of additional binary size, the internal LibTomMath
# can be configured to include faster routines for exptmod, sqr, and div to
# speed up DH and RSA calculation considerably
#CONFIG_INTERNAL_LIBTOMMATH_FAST=y

# Interworking (IEEE 802.11u)
# This can be used to enable functionality to improve interworking with
# external networks.
#CONFIG_INTERWORKING=y

# Hotspot 2.0
#CONFIG_HS20=y

# Enable SQLite database support in hlr_auc_gw, EAP-SIM DB, and eap_user_file
#CONFIG_SQLITE=y

# Enable Fast Session Transfer (FST)
#CONFIG_FST=y

# Enable CLI commands for FST testing
#CONFIG_FST_TEST=y

# Testing options
# This can be used to enable some testing options (see also the example
# configuration file) that are really useful only for testing clients that
# connect to this hostapd. These options allow, for example, to drop a
# certain percentage of probe requests or auth/(re)assoc frames.
#
#CONFIG_TESTING_OPTIONS=y

# Automatic Channel Selection
# This will allow hostapd to pick the channel automatically when channel is set
# to "acs_survey" or "0". Eventually, other ACS algorithms can be added in
# similar way.
#
# Automatic selection is currently only done through initialization, later on
# we hope to do background checks to keep us moving to more ideal channels as
# time goes by. ACS is currently only supported through the nl80211 driver and
# your driver must have survey dump capability that is filled by the driver
# during scanning.
#
# You can customize the ACS survey algorithm with the hostapd.conf variable
# acs_num_scans.
#
# Supported ACS drivers:
# * ath9k
# * ath5k
# * ath10k
#
# For more details refer to:
# https://wireless.wiki.kernel.org/en/users/documentation/acs
#
#CONFIG_ACS=y

# Multiband Operation support
# These extensions facilitate efficient use of multiple frequency bands
# available to the AP and the devices that may associate with it.
#CONFIG_MBO=y

# Client Taxonomy
# Has the AP retain the Probe Request and (Re)Association Request frames from
# a client, from which a signature can be produced which can identify the model
# of client device like "Nexus 6P" or "iPhone 5s".
#CONFIG_TAXONOMY=y

# Fast Initial Link Setup (FILS) (IEEE 802.11ai)
#CONFIG_FILS=y
# FILS shared key authentication with PFS
#CONFIG_FILS_SK_PFS=y

# Include internal line edit mode in hostapd_cli. This can be used to provide
# limited command line editing and history support.
#CONFIG_WPA_CLI_EDIT=y

# Opportunistic Wireless Encryption (OWE)
# Experimental implementation of draft-harkins-owe-07.txt
#CONFIG_OWE=y

# Airtime policy support
#CONFIG_AIRTIME_POLICY=y

# Override default value for the wpa_disable_eapol_key_retries configuration
# parameter. See that parameter in hostapd.conf for more details.
#CFLAGS += -DDEFAULT_WPA_DISABLE_EAPOL_KEY_RETRIES=1

# Wired equivalent privacy (WEP)
# WEP is an obsolete cryptographic data confidentiality algorithm that is not
# considered secure. It should not be used for anything anymore. The
# functionality needed to use WEP is available in the current hostapd
# release under this optional build parameter. This functionality is subject to
# be completely removed in a future release.
#CONFIG_WEP=y

# Remove all TKIP functionality
# TKIP is an old cryptographic data confidentiality algorithm that is not
# considered secure. It should not be used anymore. For now, the default hostapd
# build includes this to allow mixed mode WPA+WPA2 networks to be enabled, but
# that functionality is subject to be removed in the future.
#CONFIG_NO_TKIP=y

# Pre-Association Security Negotiation (PASN)
# Experimental implementation based on IEEE P802.11z/D2.6 and the protocol
# design is still subject to change. As such, this should not yet be enabled in
# production use.
# This requires CONFIG_IEEE80211W=y to be enabled, too.
#CONFIG_PASN=y

# Device Provisioning Protocol (DPP) (also known as Wi-Fi Easy Connect)
CONFIG_DPP=y
# DPP version 2 support
CONFIG_DPP2=y
# DPP version 3 support (experimental and still changing; do not enable for
# production use)
#CONFIG_DPP3=y

AP : Complile hostapd

Note

  • Compile hostapd by running make command

 
test:~$ make

AP : Check for the binaries created

Note

  • Make sure hostapd and hostapd_cli are present

 
test:~$ ls
hostapd
hostapd_cli

AP : Create a hostapd.conf file in /etc/hostapd folder with below content

 
test:~$ sudo vim /etc/hostapd/hostapd.conf

ctrl_interface=/var/run/hostapd
interface=enp0s8
driver=wired
logger_stdout=1
logger_stdout_level=1
ieee8021x=1
eap_server=1
eap_user_file=/etc/hostapd/hostapd.eap_user
eap_reauth_period=3600
auth_algs=1
macaddr_acl=0

AP : Create a file eap_user in /etc/hostapd/ folder with below content

 
test:~$ sudo vim /etc/hostapd/hostapd.eap_user
See the file of eap_user
"user1"	PAX	e5d83872d145f206c46149f5c5ce2ae4

"user2"	SAKE	"b7962e84c816c4a1644f1366344338aa"

AP : Run hostapd

 
test:~$ sudo ./hostapd /etc/hostapd/hostapd.conf
enp0s8: interface state UNINITIALIZED->ENABLED
enp0s8: AP-ENABLED

STA : Download wpa_supplicant

Note

  • Make sure internet is available in laptop to download supplicant package

 
test:~$ wget https://w1.fi/releases/wpa_supplicant-2.9.tar.gz

STA: Install required packages

 
test:~$ sudo apt install libnl-genl-3-dev libnl-3-dev libdbus-glib-1-dev

STA : Extract wpa_supplicant

 
test:~$ tar -xvf wpa_supplicant-2.9.tar.gz

STA : Change directory to wpa_supplicant

 
test:~$ cd wpa_supplicant-2.9/wpa_supplicant/

STA : Check the current working directory using pwd command

Note

  • Make sure your current working directory is wpa_supplicant

 
test:~$ pwd
/home/test/wpa_supplicant-2.9/wpa_supplicant

STA : Copy the contents of defconfig file to .config file

Note

  • .config file is required for make to start compilation of supplicant

 
test:~$ cp defconfig .config
See the full configuration of wpa_supplicant
# Example wpa_supplicant build time configuration
#
# This file lists the configuration options that are used when building the
# wpa_supplicant binary. All lines starting with # are ignored. Configuration
# option lines must be commented out complete, if they are not to be included,
# i.e., just setting VARIABLE=n is not disabling that variable.
#
# This file is included in Makefile, so variables like CFLAGS and LIBS can also
# be modified from here. In most cases, these lines should use += in order not
# to override previous values of the variables.


# Uncomment following two lines and fix the paths if you have installed OpenSSL
# or GnuTLS in non-default location
#CFLAGS += -I/usr/local/openssl/include
#LIBS += -L/usr/local/openssl/lib

# Some Red Hat versions seem to include kerberos header files from OpenSSL, but
# the kerberos files are not in the default include path. Following line can be
# used to fix build issues on such systems (krb5.h not found).
#CFLAGS += -I/usr/include/kerberos

# Driver interface for generic Linux wireless extensions
# Note: WEXT is deprecated in the current Linux kernel version and no new
# functionality is added to it. nl80211-based interface is the new
# replacement for WEXT and its use allows wpa_supplicant to properly control
# the driver to improve existing functionality like roaming and to support new
# functionality.
CONFIG_DRIVER_WEXT=y

# Driver interface for Linux drivers using the nl80211 kernel interface
CONFIG_DRIVER_NL80211=y
CONFIG_DRIVER_WIRED=y
CONFIG_IEEE8021X_EAPOL=y
CONFIG_RADIUS_SERVER=y
CONFIG_TLS=openssl
CONFIG_EAP=y
CONFIG_TLSV11=y
CONFIG_TLSV12=y
CONFIG_EAP_TLS=y
CONFIG_EAP_MSCHAPV2=y
CONFIG_EAP_PEAP=y
CONFIG_EAP_MD5=y
CONFIG_EAP_PAX=y
CONFIG_EAP_SAKE=y

# QCA vendor extensions to nl80211
#CONFIG_DRIVER_NL80211_QCA=y

# driver_nl80211.c requires libnl. If you are compiling it yourself
# you may need to point hostapd to your version of libnl.
#
#CFLAGS += -I$<path to libnl include files>
#LIBS += -L$<path to libnl library files>

# Use libnl v2.0 (or 3.0) libraries.
#CONFIG_LIBNL20=y

# Use libnl 3.2 libraries (if this is selected, CONFIG_LIBNL20 is ignored)
CONFIG_LIBNL32=y


# Driver interface for FreeBSD net80211 layer (e.g., Atheros driver)
#CONFIG_DRIVER_BSD=y
#CFLAGS += -I/usr/local/include
#LIBS += -L/usr/local/lib
#LIBS_p += -L/usr/local/lib
#LIBS_c += -L/usr/local/lib

# Driver interface for Windows NDIS
#CONFIG_DRIVER_NDIS=y
#CFLAGS += -I/usr/include/w32api/ddk
#LIBS += -L/usr/local/lib
# For native build using mingw
#CONFIG_NATIVE_WINDOWS=y
# Additional directories for cross-compilation on Linux host for mingw target
#CFLAGS += -I/opt/mingw/mingw32/include/ddk
#LIBS += -L/opt/mingw/mingw32/lib
#CC=mingw32-gcc
# By default, driver_ndis uses WinPcap for low-level operations. This can be
# replaced with the following option which replaces WinPcap calls with NDISUIO.
# However, this requires that WZC is disabled (net stop wzcsvc) before starting
# wpa_supplicant.
# CONFIG_USE_NDISUIO=y

# Driver interface for wired Ethernet drivers
CONFIG_DRIVER_WIRED=y

# Driver interface for MACsec capable Qualcomm Atheros drivers
#CONFIG_DRIVER_MACSEC_QCA=y

# Driver interface for Linux MACsec drivers
CONFIG_DRIVER_MACSEC_LINUX=y

# Driver interface for the Broadcom RoboSwitch family
#CONFIG_DRIVER_ROBOSWITCH=y

# Driver interface for no driver (e.g., WPS ER only)
#CONFIG_DRIVER_NONE=y

# Solaris libraries
#LIBS += -lsocket -ldlpi -lnsl
#LIBS_c += -lsocket

# Enable IEEE 802.1X Supplicant (automatically included if any EAP method or
# MACsec is included)
CONFIG_IEEE8021X_EAPOL=y

# EAP-MD5
CONFIG_EAP_MD5=y

# EAP-MSCHAPv2
CONFIG_EAP_MSCHAPV2=y

# EAP-TLS
CONFIG_EAP_TLS=y

# EAL-PEAP
CONFIG_EAP_PEAP=y

# EAP-TTLS
CONFIG_EAP_TTLS=y

# EAP-FAST
CONFIG_EAP_FAST=y

# EAP-TEAP
# Note: The current EAP-TEAP implementation is experimental and should not be
# enabled for production use. The IETF RFC 7170 that defines EAP-TEAP has number
# of conflicting statements and missing details and the implementation has
# vendor specific workarounds for those and as such, may not interoperate with
# any other implementation. This should not be used for anything else than
# experimentation and interoperability testing until those issues has been
# resolved.
#CONFIG_EAP_TEAP=y

# EAP-GTC
CONFIG_EAP_GTC=y

# EAP-OTP
CONFIG_EAP_OTP=y

# EAP-SIM (enable CONFIG_PCSC, if EAP-SIM is used)
#CONFIG_EAP_SIM=y

# Enable SIM simulator (Milenage) for EAP-SIM
#CONFIG_SIM_SIMULATOR=y

# EAP-PSK (experimental; this is _not_ needed for WPA-PSK)
#CONFIG_EAP_PSK=y

# EAP-pwd (secure authentication using only a password)
CONFIG_EAP_PWD=y

# EAP-PAX
CONFIG_EAP_PAX=y

# LEAP
CONFIG_EAP_LEAP=y

# EAP-AKA (enable CONFIG_PCSC, if EAP-AKA is used)
#CONFIG_EAP_AKA=y

# EAP-AKA' (enable CONFIG_PCSC, if EAP-AKA' is used).
# This requires CONFIG_EAP_AKA to be enabled, too.
#CONFIG_EAP_AKA_PRIME=y

# Enable USIM simulator (Milenage) for EAP-AKA
#CONFIG_USIM_SIMULATOR=y

# EAP-SAKE
CONFIG_EAP_SAKE=y

# EAP-GPSK
CONFIG_EAP_GPSK=y
# Include support for optional SHA256 cipher suite in EAP-GPSK
CONFIG_EAP_GPSK_SHA256=y

# EAP-TNC and related Trusted Network Connect support (experimental)
CONFIG_EAP_TNC=y

# Wi-Fi Protected Setup (WPS)
CONFIG_WPS=y
# Enable WPS external registrar functionality
#CONFIG_WPS_ER=y
# Disable credentials for an open network by default when acting as a WPS
# registrar.
#CONFIG_WPS_REG_DISABLE_OPEN=y
# Enable WPS support with NFC config method
#CONFIG_WPS_NFC=y

# EAP-IKEv2
CONFIG_EAP_IKEV2=y

# EAP-EKE
#CONFIG_EAP_EKE=y

# MACsec
CONFIG_MACSEC=y

# PKCS#12 (PFX) support (used to read private key and certificate file from
# a file that usually has extension .p12 or .pfx)
CONFIG_PKCS12=y

# Smartcard support (i.e., private key on a smartcard), e.g., with openssl
# engine.
CONFIG_SMARTCARD=y

# PC/SC interface for smartcards (USIM, GSM SIM)
# Enable this if EAP-SIM or EAP-AKA is included
#CONFIG_PCSC=y

# Support HT overrides (disable HT/HT40, mask MCS rates, etc.)
#CONFIG_HT_OVERRIDES=y

# Support VHT overrides (disable VHT, mask MCS rates, etc.)
#CONFIG_VHT_OVERRIDES=y

# Development testing
#CONFIG_EAPOL_TEST=y

# Select control interface backend for external programs, e.g, wpa_cli:
# unix = UNIX domain sockets (default for Linux/*BSD)
# udp = UDP sockets using localhost (127.0.0.1)
# udp6 = UDP IPv6 sockets using localhost (::1)
# named_pipe = Windows Named Pipe (default for Windows)
# udp-remote = UDP sockets with remote access (only for tests systems/purpose)
# udp6-remote = UDP IPv6 sockets with remote access (only for tests purpose)
# y = use default (backwards compatibility)
# If this option is commented out, control interface is not included in the
# build.
CONFIG_CTRL_IFACE=y

# Include support for GNU Readline and History Libraries in wpa_cli.
# When building a wpa_cli binary for distribution, please note that these
# libraries are licensed under GPL and as such, BSD license may not apply for
# the resulting binary.
#CONFIG_READLINE=y

# Include internal line edit mode in wpa_cli. This can be used as a replacement
# for GNU Readline to provide limited command line editing and history support.
#CONFIG_WPA_CLI_EDIT=y

# Remove debugging code that is printing out debug message to stdout.
# This can be used to reduce the size of the wpa_supplicant considerably
# if debugging code is not needed. The size reduction can be around 35%
# (e.g., 90 kB).
#CONFIG_NO_STDOUT_DEBUG=y

# Remove WPA support, e.g., for wired-only IEEE 802.1X supplicant, to save
# 35-50 kB in code size.
#CONFIG_NO_WPA=y

# Remove IEEE 802.11i/WPA-Personal ASCII passphrase support
# This option can be used to reduce code size by removing support for
# converting ASCII passphrases into PSK. If this functionality is removed, the
# PSK can only be configured as the 64-octet hexstring (e.g., from
# wpa_passphrase). This saves about 0.5 kB in code size.
#CONFIG_NO_WPA_PASSPHRASE=y

# Simultaneous Authentication of Equals (SAE), WPA3-Personal
CONFIG_SAE=y

# Disable scan result processing (ap_scan=1) to save code size by about 1 kB.
# This can be used if ap_scan=1 mode is never enabled.
#CONFIG_NO_SCAN_PROCESSING=y

# Select configuration backend:
# file = text file (e.g., wpa_supplicant.conf; note: the configuration file
#	path is given on command line, not here; this option is just used to
#	select the backend that allows configuration files to be used)
# winreg = Windows registry (see win_example.reg for an example)
CONFIG_BACKEND=file

# Remove configuration write functionality (i.e., to allow the configuration
# file to be updated based on runtime configuration changes). The runtime
# configuration can still be changed, the changes are just not going to be
# persistent over restarts. This option can be used to reduce code size by
# about 3.5 kB.
#CONFIG_NO_CONFIG_WRITE=y

# Remove support for configuration blobs to reduce code size by about 1.5 kB.
#CONFIG_NO_CONFIG_BLOBS=y

# Select program entry point implementation:
# main = UNIX/POSIX like main() function (default)
# main_winsvc = Windows service (read parameters from registry)
# main_none = Very basic example (development use only)
#CONFIG_MAIN=main

# Select wrapper for operating system and C library specific functions
# unix = UNIX/POSIX like systems (default)
# win32 = Windows systems
# none = Empty template
#CONFIG_OS=unix

# Select event loop implementation
# eloop = select() loop (default)
# eloop_win = Windows events and WaitForMultipleObject() loop
#CONFIG_ELOOP=eloop

# Should we use poll instead of select? Select is used by default.
#CONFIG_ELOOP_POLL=y

# Should we use epoll instead of select? Select is used by default.
#CONFIG_ELOOP_EPOLL=y

# Should we use kqueue instead of select? Select is used by default.
#CONFIG_ELOOP_KQUEUE=y

# Select layer 2 packet implementation
# linux = Linux packet socket (default)
# pcap = libpcap/libdnet/WinPcap
# freebsd = FreeBSD libpcap
# winpcap = WinPcap with receive thread
# ndis = Windows NDISUIO (note: requires CONFIG_USE_NDISUIO=y)
# none = Empty template
#CONFIG_L2_PACKET=linux

# Disable Linux packet socket workaround applicable for station interface
# in a bridge for EAPOL frames. This should be uncommented only if the kernel
# is known to not have the regression issue in packet socket behavior with
# bridge interfaces (commit 'bridge: respect RFC2863 operational state')').
#CONFIG_NO_LINUX_PACKET_SOCKET_WAR=y

# Support Operating Channel Validation
#CONFIG_OCV=y

# Select TLS implementation
# openssl = OpenSSL (default)
# gnutls = GnuTLS
# internal = Internal TLSv1 implementation (experimental)
# linux = Linux kernel AF_ALG and internal TLSv1 implementation (experimental)
# none = Empty template
#CONFIG_TLS=openssl

# TLS-based EAP methods require at least TLS v1.0. Newer version of TLS (v1.1)
# can be enabled to get a stronger construction of messages when block ciphers
# are used. It should be noted that some existing TLS v1.0 -based
# implementation may not be compatible with TLS v1.1 message (ClientHello is
# sent prior to negotiating which version will be used)
#CONFIG_TLSV11=y

# TLS-based EAP methods require at least TLS v1.0. Newer version of TLS (v1.2)
# can be enabled to enable use of stronger crypto algorithms. It should be
# noted that some existing TLS v1.0 -based implementation may not be compatible
# with TLS v1.2 message (ClientHello is sent prior to negotiating which version
# will be used)
#CONFIG_TLSV12=y

# Select which ciphers to use by default with OpenSSL if the user does not
# specify them.
#CONFIG_TLS_DEFAULT_CIPHERS="DEFAULT:!EXP:!LOW"

# If CONFIG_TLS=internal is used, additional library and include paths are
# needed for LibTomMath. Alternatively, an integrated, minimal version of
# LibTomMath can be used. See beginning of libtommath.c for details on benefits
# and drawbacks of this option.
#CONFIG_INTERNAL_LIBTOMMATH=y
#ifndef CONFIG_INTERNAL_LIBTOMMATH
#LTM_PATH=/usr/src/libtommath-0.39
#CFLAGS += -I$(LTM_PATH)
#LIBS += -L$(LTM_PATH)
#LIBS_p += -L$(LTM_PATH)
#endif
# At the cost of about 4 kB of additional binary size, the internal LibTomMath
# can be configured to include faster routines for exptmod, sqr, and div to
# speed up DH and RSA calculation considerably
#CONFIG_INTERNAL_LIBTOMMATH_FAST=y

# Include NDIS event processing through WMI into wpa_supplicant/wpasvc.
# This is only for Windows builds and requires WMI-related header files and
# WbemUuid.Lib from Platform SDK even when building with MinGW.
#CONFIG_NDIS_EVENTS_INTEGRATED=y
#PLATFORMSDKLIB="/opt/Program Files/Microsoft Platform SDK/Lib"

# Add support for new DBus control interface
# (fi.w1.wpa_supplicant1)
CONFIG_CTRL_IFACE_DBUS_NEW=y

# Add introspection support for new DBus control interface
CONFIG_CTRL_IFACE_DBUS_INTRO=y

# Add support for loading EAP methods dynamically as shared libraries.
# When this option is enabled, each EAP method can be either included
# statically (CONFIG_EAP_<method>=y) or dynamically (CONFIG_EAP_<method>=dyn).
# Dynamic EAP methods are build as shared objects (eap_*.so) and they need to
# be loaded in the beginning of the wpa_supplicant configuration file
# (see load_dynamic_eap parameter in the example file) before being used in
# the network blocks.
#
# Note that some shared parts of EAP methods are included in the main program
# and in order to be able to use dynamic EAP methods using these parts, the
# main program must have been build with the EAP method enabled (=y or =dyn).
# This means that EAP-TLS/PEAP/TTLS/FAST cannot be added as dynamic libraries
# unless at least one of them was included in the main build to force inclusion
# of the shared code. Similarly, at least one of EAP-SIM/AKA must be included
# in the main build to be able to load these methods dynamically.
#
# Please also note that using dynamic libraries will increase the total binary
# size. Thus, it may not be the best option for targets that have limited
# amount of memory/flash.
#CONFIG_DYNAMIC_EAP_METHODS=y

# IEEE Std 802.11r-2008 (Fast BSS Transition) for station mode
CONFIG_IEEE80211R=y

# Add support for writing debug log to a file (/tmp/wpa_supplicant-log-#.txt)
CONFIG_DEBUG_FILE=y

# Send debug messages to syslog instead of stdout
CONFIG_DEBUG_SYSLOG=y
# Set syslog facility for debug messages
#CONFIG_DEBUG_SYSLOG_FACILITY=LOG_DAEMON

# Add support for sending all debug messages (regardless of debug verbosity)
# to the Linux kernel tracing facility. This helps debug the entire stack by
# making it easy to record everything happening from the driver up into the
# same file, e.g., using trace-cmd.
#CONFIG_DEBUG_LINUX_TRACING=y

# Add support for writing debug log to Android logcat instead of standard
# output
#CONFIG_ANDROID_LOG=y

# Enable privilege separation (see README 'Privilege separation' for details)
#CONFIG_PRIVSEP=y

# Enable mitigation against certain attacks against TKIP by delaying Michael
# MIC error reports by a random amount of time between 0 and 60 seconds
#CONFIG_DELAYED_MIC_ERROR_REPORT=y

# Enable tracing code for developer debugging
# This tracks use of memory allocations and other registrations and reports
# incorrect use with a backtrace of call (or allocation) location.
#CONFIG_WPA_TRACE=y
# For BSD, uncomment these.
#LIBS += -lexecinfo
#LIBS_p += -lexecinfo
#LIBS_c += -lexecinfo

# Use libbfd to get more details for developer debugging
# This enables use of libbfd to get more detailed symbols for the backtraces
# generated by CONFIG_WPA_TRACE=y.
#CONFIG_WPA_TRACE_BFD=y
# For BSD, uncomment these.
#LIBS += -lbfd -liberty -lz
#LIBS_p += -lbfd -liberty -lz
#LIBS_c += -lbfd -liberty -lz

# wpa_supplicant depends on strong random number generation being available
# from the operating system. os_get_random() function is used to fetch random
# data when needed, e.g., for key generation. On Linux and BSD systems, this
# works by reading /dev/urandom. It should be noted that the OS entropy pool
# needs to be properly initialized before wpa_supplicant is started. This is
# important especially on embedded devices that do not have a hardware random
# number generator and may by default start up with minimal entropy available
# for random number generation.
#
# As a safety net, wpa_supplicant is by default trying to internally collect
# additional entropy for generating random data to mix in with the data fetched
# from the OS. This by itself is not considered to be very strong, but it may
# help in cases where the system pool is not initialized properly. However, it
# is very strongly recommended that the system pool is initialized with enough
# entropy either by using hardware assisted random number generator or by
# storing state over device reboots.
#
# wpa_supplicant can be configured to maintain its own entropy store over
# restarts to enhance random number generation. This is not perfect, but it is
# much more secure than using the same sequence of random numbers after every
# reboot. This can be enabled with -e<entropy file> command line option. The
# specified file needs to be readable and writable by wpa_supplicant.
#
# If the os_get_random() is known to provide strong random data (e.g., on
# Linux/BSD, the board in question is known to have reliable source of random
# data from /dev/urandom), the internal wpa_supplicant random pool can be
# disabled. This will save some in binary size and CPU use. However, this
# should only be considered for builds that are known to be used on devices
# that meet the requirements described above.
#CONFIG_NO_RANDOM_POOL=y

# Should we attempt to use the getrandom(2) call that provides more reliable
# yet secure randomness source than /dev/random on Linux 3.17 and newer.
# Requires glibc 2.25 to build, falls back to /dev/random if unavailable.
#CONFIG_GETRANDOM=y

# IEEE 802.11ac (Very High Throughput) support (mainly for AP mode)
CONFIG_IEEE80211AC=y

# Wireless Network Management (IEEE Std 802.11v-2011)
# Note: This is experimental and not complete implementation.
#CONFIG_WNM=y

# Interworking (IEEE 802.11u)
# This can be used to enable functionality to improve interworking with
# external networks (GAS/ANQP to learn more about the networks and network
# selection based on available credentials).
CONFIG_INTERWORKING=y

# Hotspot 2.0
CONFIG_HS20=y

# Enable interface matching in wpa_supplicant
#CONFIG_MATCH_IFACE=y

# Disable roaming in wpa_supplicant
#CONFIG_NO_ROAMING=y

# AP mode operations with wpa_supplicant
# This can be used for controlling AP mode operations with wpa_supplicant. It
# should be noted that this is mainly aimed at simple cases like
# WPA2-Personal while more complex configurations like WPA2-Enterprise with an
# external RADIUS server can be supported with hostapd.
CONFIG_AP=y

# P2P (Wi-Fi Direct)
# This can be used to enable P2P support in wpa_supplicant. See README-P2P for
# more information on P2P operations.
CONFIG_P2P=y

# Enable TDLS support
CONFIG_TDLS=y

# Wi-Fi Display
# This can be used to enable Wi-Fi Display extensions for P2P using an external
# program to control the additional information exchanges in the messages.
CONFIG_WIFI_DISPLAY=y

# Autoscan
# This can be used to enable automatic scan support in wpa_supplicant.
# See wpa_supplicant.conf for more information on autoscan usage.
#
# Enabling directly a module will enable autoscan support.
# For exponential module:
#CONFIG_AUTOSCAN_EXPONENTIAL=y
# For periodic module:
#CONFIG_AUTOSCAN_PERIODIC=y

# Password (and passphrase, etc.) backend for external storage
# These optional mechanisms can be used to add support for storing passwords
# and other secrets in external (to wpa_supplicant) location. This allows, for
# example, operating system specific key storage to be used
#
# External password backend for testing purposes (developer use)
#CONFIG_EXT_PASSWORD_TEST=y
# File-based backend to read passwords from an external file.
#CONFIG_EXT_PASSWORD_FILE=y

# Enable Fast Session Transfer (FST)
#CONFIG_FST=y

# Enable CLI commands for FST testing
#CONFIG_FST_TEST=y

# OS X builds. This is only for building eapol_test.
#CONFIG_OSX=y

# Automatic Channel Selection
# This will allow wpa_supplicant to pick the channel automatically when channel
# is set to "0".
#
# TODO: Extend parser to be able to parse "channel=acs_survey" as an alternative
# to "channel=0". This would enable us to eventually add other ACS algorithms in
# similar way.
#
# Automatic selection is currently only done through initialization, later on
# we hope to do background checks to keep us moving to more ideal channels as
# time goes by. ACS is currently only supported through the nl80211 driver and
# your driver must have survey dump capability that is filled by the driver
# during scanning.
#
# TODO: In analogy to hostapd be able to customize the ACS survey algorithm with
# a newly to create wpa_supplicant.conf variable acs_num_scans.
#
# Supported ACS drivers:
# * ath9k
# * ath5k
# * ath10k
#
# For more details refer to:
# http://wireless.kernel.org/en/users/Documentation/acs
#CONFIG_ACS=y

# Support Multi Band Operation
#CONFIG_MBO=y

# Fast Initial Link Setup (FILS) (IEEE 802.11ai)
#CONFIG_FILS=y
# FILS shared key authentication with PFS
#CONFIG_FILS_SK_PFS=y

# Support RSN on IBSS networks
# This is needed to be able to use mode=1 network profile with proto=RSN and
# key_mgmt=WPA-PSK (i.e., full key management instead of WPA-None).
CONFIG_IBSS_RSN=y

# External PMKSA cache control
# This can be used to enable control interface commands that allow the current
# PMKSA cache entries to be fetched and new entries to be added.
#CONFIG_PMKSA_CACHE_EXTERNAL=y

# Mesh Networking (IEEE 802.11s)
#CONFIG_MESH=y

# Background scanning modules
# These can be used to request wpa_supplicant to perform background scanning
# operations for roaming within an ESS (same SSID). See the bgscan parameter in
# the wpa_supplicant.conf file for more details.
# Periodic background scans based on signal strength
CONFIG_BGSCAN_SIMPLE=y
# Learn channels used by the network and try to avoid bgscans on other
# channels (experimental)
#CONFIG_BGSCAN_LEARN=y

# Opportunistic Wireless Encryption (OWE)
# Experimental implementation of draft-harkins-owe-07.txt
#CONFIG_OWE=y

# Device Provisioning Protocol (DPP) (also known as Wi-Fi Easy Connect)
CONFIG_DPP=y
# DPP version 2 support
CONFIG_DPP2=y
# DPP version 3 support (experimental and still changing; do not enable for
# production use)
#CONFIG_DPP3=y

# Wired equivalent privacy (WEP)
# WEP is an obsolete cryptographic data confidentiality algorithm that is not
# considered secure. It should not be used for anything anymore. The
# functionality needed to use WEP is available in the current wpa_supplicant
# release under this optional build parameter. This functionality is subject to
# be completely removed in a future release.
#CONFIG_WEP=y

# Remove all TKIP functionality
# TKIP is an old cryptographic data confidentiality algorithm that is not
# considered secure. It should not be used anymore for anything else than a
# backwards compatibility option as a group cipher when connecting to APs that
# use WPA+WPA2 mixed mode. For now, the default wpa_supplicant build includes
# support for this by default, but that functionality is subject to be removed
# in the future.
#CONFIG_NO_TKIP=y

# Pre-Association Security Negotiation (PASN)
# Experimental implementation based on IEEE P802.11z/D2.6 and the protocol
# design is still subject to change. As such, this should not yet be enabled in
# production use.
#CONFIG_PASN=y

STA : Compile wpa_supplicant

Note

  • Compile supplicant by running make command.

 
test:~$ make

STA: You might get errors while make regarding openssl headers in that case install the openssl headers and then do make clean and then do make again.

 
test:~$ sudo apt install libssl-dev
test:~$ make clean
test:~$ make

STA : Check for the binaries created

Note

  • Make sure wpa_supplicant and wpa_cli are present

 
test:~$ ls
wpa_supplicant
wpa_cli

STA: Copy required certificates from hostapd to wpa_supplicant

STA : Create wpa_supplicant.conf

 
test:~$ sudo vim wpa_supplicant.conf

ctrl_interface=/run/wpa_supplicant
update_config=1
network={
key_mgmt=WPA-EAP
eap=SAKE
identity="user2"
password="b7962e84c816c4a1644f1366344338aa"
}

STA : Run wpa_supplicant

 
test:~$ sudo ./wpa_supplicant -D wired -i enp0s8 -c wpa_supplicant.conf
enp0s8: CTRL-EVENT-EAP-SUCCESS EAP authentication completed successfully

STA: Test

 
test:sudo ./wpa_cli -i enp0s8
> status

  • setup

  • setup

  • packet details

  • usecases

  • features

  • Reference links