am e31782f9: cherry-pick: wpa_supplicant: disable OpenSSL engine.

[android-x86/external-wpa_supplicant.git] / ChangeLog

ChangeLog for wpa_supplicant

2008-11-28 - v0.5.11
        * fixed race condition between disassociation event and group key
          handshake to avoid getting stuck in incorrect state [Bug 261]
        * updated D-Bus usage to avoid deprecated functions
        * silence SIOCSIWAUTH ioctl failure message (these can be ignored in
          most cases and are now only shown in debug output)
        * increase timeout for IBSS connection
        * driver_wext: do not overwrite BSS frequency if channel was already
          received
        * driver_wext: set interface down for mode switches, if needed (e.g.,
          for mac80211)
        * driver_wext: fixed re-initialization of a removed and re-inserted
          interface (e.g., USB dongle or on resume if driver was unloaded for
          suspend)
        * improve per-SSID scanning for drivers that report background scan
          results frequently
        * fixed scanning behavior after a failed initial association
        * driver_wext: fixed processing of invalid event messages from kernel
          not to crash wpa_supplicant (this could happen when using 64-bit
          kernel with 32-bit userspace)
        * fixed EAP-AKA to use RES Length field in AT_RES as length in bits,
          not bytes
        * fixed canceling of PMKSA caching when using drivers that generate
          RSN IE and refuse to drop PMKIDs that wpa_supplicant does not know
          about

2008-02-19 - v0.5.10
        * added support for Makefile builds to include debug-log-to-a-file
          functionality (CONFIG_DEBUG_FILE=y and -f<path> on command line)
        * added network configuration parameter 'frequency' for setting
          initial channel for IBSS (adhoc) networks
        * fixed EAP-SIM and EAP-AKA message parser to validate attribute
          lengths properly to avoid potential crash caused by invalid messages
        * added driver_wext workaround for race condition between scanning and
          association with drivers that take very long time to scan all
          channels (e.g., madwifi with dual-band cards); wpa_supplicant is now
          using a longer hardcoded timeout for the scan if the driver supports
          notifications for scan completion (SIOCGIWSCAN event); this helps,
          e.g., in cases where wpa_supplicant and madwifi driver ended up in
          loop where the driver did not even try to associate
        * fixed EAP-SIM not to include AT_NONCE_MT and AT_SELECTED_VERSION
          attributes in EAP-SIM Start/Response when using fast reauthentication
        * fixed problems in getting NDIS events from WMI on Windows 2000

2007-12-02 - v0.5.9
        * fixed an integer overflow issue in the ASN.1 parser used by the
          (experimental) internal TLS implementation to avoid a potential
          buffer read overflow
        * fixed a race condition with -W option (wait for a control interface
          monitor before starting) that could have caused the first messages to
          be lost
        * updated EAP Generalized Pre-Shared Key (EAP-GPSK) to use the latest
          draft (draft-ietf-emu-eap-gpsk-07.txt)
        * added ctrl_iface RECONNECT (wpa_cli reconnect) command
          (like reassociate, but only takes effect if already associated)
        * fixed a possible race condition between wpa_cli reassociate and
          wpa_cli disconnect
        * return a non-zero exit code from non-interactive wpa_cli if the
          command is not recognized or fails
        * fixed 0.5.8 regressions in BSS selection that prevented wildcard SSID
          from being used with non-WPA networks and disabled workaround for
          ignoring bogus WPA/RSN IE in non-WPA configuration
        * fixed OpenSSL TLS wrapper to clear trusted CA list to allow
          network blocks to use different trusted CA configurations
        * fixed a potential EAP state machine loop when mloving from PSK to EAP
          configuration without restarting wpa_supplicant

2007-05-28 - v0.5.8
        * updated driver_wext.c to build with the current wireless-dev.git tree
          and net/d80211 changes
        * updated EAP Generalized Pre-Shared Key (EAP-GPSK) to use the latest
          draft (draft-ietf-emu-eap-gpsk-03.txt)
        * fixed 'make install'
        * fixed EAP-TTLS implementation not to crash on use of freed memory
          if TLS library initialization fails
        * fixed EAP-AKA Notification processing to allow Notification to be
          processed after AKA Challenge response has been sent

2006-12-31 - v0.5.7
        * updated EAP-SAKE to RFC 4763 and the IANA-allocated EAP type 48
        * updated EAP-PSK to use the IANA-allocated EAP type 47
        * fixed EAP-PAX key derivation
        * fixed EAP-PSK bit ordering of the Flags field
        * fixed EAP-PEAP/TTLS/FAST to use the correct EAP identifier in
          tunnelled identity request (previously, the identifier from the outer
          method was used, not the tunnelled identifier which could be
          different)
        * fixed EAP-TTLS AVP parser processing for too short AVP lengths
        * added support for EAP-FAST authentication with inner methods that
          generate MSK (e.g., EAP-MSCHAPv2 that was previously only supported
          for PAC provisioning)
        * fixed dbus ctrl_iface to validate message interface before
          dispatching to avoid a possible segfault [Bug 190]
        * fixed PeerKey key derivation to use the correct PRF label
        * updated Windows binary build to link against OpenSSL 0.9.8d and
          added support for EAP-FAST

2006-11-24 - v0.5.6
        * added experimental, integrated TLSv1 client implementation with the
          needed X.509/ASN.1/RSA/bignum processing (this can be enabled by
          setting CONFIG_TLS=internal and CONFIG_INTERNAL_LIBTOMMATH=y in
          .config); this can be useful, e.g., if the target system does not
          have a suitable TLS library and a minimal code size is required
          (total size of this internal TLS/crypto code is bit under 50 kB on
          x86 and the crypto code is shared by rest of the supplicant so some
          of it was already required; TLSv1/X.509/ASN.1/RSA added about 25 kB)
        * removed STAKey handshake since PeerKey handshake has replaced it in
          IEEE 802.11ma and there are no known deployments of STAKey
        * updated EAP Generalized Pre-Shared Key (EAP-GPSK) to use the latest
          draft (draft-ietf-emu-eap-gpsk-01.txt)
        * added preliminary implementation of IEEE 802.11w/D1.0 (management
          frame protection)
          (Note: this requires driver support to work properly.)
          (Note2: IEEE 802.11w is an unapproved draft and subject to change.)
        * fixed Windows named pipes ctrl_iface to not stop listening for
          commands if client program opens a named pipe and closes it
          immediately without sending a command
        * fixed USIM PIN status determination for the case that PIN is not
          needed (this allows EAP-AKA to be used with USIM cards that do not
          use PIN)
        * added support for reading 3G USIM AID from EF_DIR to allow EAP-AKA to
          be used with cards that do not support file selection based on
          partial AID
        * added support for matching the subjectAltName of the authentication
          server certificate against multiple name components (e.g.,
          altsubject_match="DNS:server.example.com;DNS:server2.example.com")
        * fixed EAP-SIM/AKA key derivation for re-authentication case (only
          affects IEEE 802.1X with dynamic WEP keys)
        * changed ctrl_iface network configuration 'get' operations to not
          return password/key material; if these fields are requested, "*"
          will be returned if the password/key is set, but the value of the
          parameter is not exposed

2006-08-27 - v0.5.5
        * added support for building Windows version with UNICODE defined
          (wide-char functions)
        * driver_ndis: fixed static WEP configuration to avoid race condition
          issues with some NDIS drivers between association and setting WEP
          keys
        * driver_ndis: added validation for IELength value in scan results to
          avoid crashes when using buggy NDIS drivers [Bug 165]
        * fixed Release|Win32 target in the Visual Studio project files
          (previously, only Debug|Win32 target was set properly)
        * changed control interface API call wpa_ctrl_pending() to allow it to
          return -1 on error (e.g., connection lost); control interface clients
          will need to make sure that they verify that the value is indeed >0
          when determining whether there are pending messages
        * added an alternative control interface backend for Windows targets:
          Named Pipe (CONFIG_CTRL_IFACE=named_pipe); this is now the default
          control interface mechanism for Windows builds (previously, UDP to
          localhost was used)
        * changed ctrl_interface configuration for UNIX domain sockets:
          - deprecated ctrl_interface_group variable (it may be removed in
            future versions)
          - allow both directory and group be configured with ctrl_interface
            in following format: DIR=/var/run/wpa_supplicant GROUP=wheel
          - ctrl_interface=/var/run/wpa_supplicant is still supported for the
            case when group is not changed
        * added support for controlling more than one interface per process in
          Windows version
        * added a workaround for a case where the AP is using unknown address
          (e.g., MAC address of the wired interface) as the source address for
          EAPOL-Key frames; previously, that source address was used as the
          destination for EAPOL-Key frames and in key derivation; now, BSSID is
          used even if the source address does not match with it
          (this resolves an interoperability issue with Thomson SpeedTouch 580)
        * added a workaround for UDP-based control interface (which was used in
          Windows builds before this release) to prevent packets with forged
          addresses from being accepted as local control requests
        * removed ndis_events.cpp and possibility of using external
          ndis_events.exe; C version (ndis_events.c) is fully functional and
          there is no desire to maintain two separate versions of this
          implementation
        * ndis_events: Changed NDIS event notification design to use WMI to
          learn the adapter description through Win32_PnPEntity class; this
          should fix some cases where the adapter name was not recognized
          correctly (e.g., with some USB WLAN adapters, e.g., Ralink RT2500
          USB) [Bug 113]
        * fixed selection of the first network in ap_scan=2 mode; previously,
          wpa_supplicant could get stuck in SCANNING state when only the first
          network for enabled (e.g., after 'wpa_cli select_network 0')
        * winsvc: added support for configuring ctrl_interface parameters in
          registry (ctrl_interface string value in
          HKLM\SOFTWARE\wpa_supplicant\interfaces\0000 key); this new value is
          required to enable control interface (previously, this was hardcoded
          to be enabled)
        * allow wpa_gui subdirectory to be built with both Qt3 and Qt4
        * converted wpa_gui-qt4 subdirectory to use Qt4 specific project format

2006-06-20 - v0.5.4
        * fixed build with CONFIG_STAKEY=y [Bug 143]
        * added support for doing MLME (IEEE 802.11 management frame
          processing) in wpa_supplicant when using Devicescape IEEE 802.11
          stack (wireless-dev.git tree)
        * added a new network block configuration option, fragment_size, to
          configure the maximum EAP fragment size
        * driver_ndis: Disable WZC automatically for the selected interface to
          avoid conflicts with two programs trying to control the radio; WZC
          will be re-enabled (if it was enabled originally) when wpa_supplicant
          is terminated
        * added an experimental TLSv1 client implementation
          (CONFIG_TLS=internal) that can be used instead of an external TLS
          library, e.g., to reduce total size requirement on systems that do
          not include any TLS library by default (this is not yet complete;
          basic functionality is there, but certificate validation is not yet
          included)
        * added PeerKey handshake implementation for IEEE 802.11e
          direct link setup (DLS) to replace STAKey handshake
        * fixed WPA PSK update through ctrl_iface for the case where the old
          PSK was derived from an ASCII passphrase and the new PSK is set as
          a raw PSK (hex string)
        * added new configuration option for identifying which network block
          was used (id_str in wpa_supplicant.conf; included on
          WPA_EVENT_CONNECT monitor event and as WPA_ID_STR environmental
          variable in wpa_cli action scripts; in addition WPA_ID variable is
          set to the current unique identifier that wpa_supplicant assigned
          automatically for the network and that can be used with
          GET_NETWORK/SET_NETWORK ctrl_iface commands)
        * wpa_cli action script is now called only when the connect/disconnect
          status changes or when associating with a different network
        * fixed configuration parser not to remove CCMP from group cipher list
          if WPA-None (adhoc) is used (pairwise=NONE in that case)
        * fixed integrated NDIS events processing not to hang the process due
          to a missed change in eloop_win.c API in v0.5.3 [Bug 155]
        * added support for EAP Generalized Pre-Shared Key (EAP-GPSK,
          draft-clancy-emu-eap-shared-secret-00.txt)
        * added Microsoft Visual Studio 2005 solution and project files for
          build wpa_supplicant for Windows (see vs2005 subdirectory)
        * eloop_win: fixed unregistration of Windows events
        * l2_packet_winpcap: fixed a deadlock in deinitializing l2_packet
          at the end of RSN pre-authentication and added unregistration of
          a Windows event to avoid getting eloop_win stuck with an invalid
          handle
        * driver_ndis: added support for selecting AP based on BSSID
        * added new environmental variable for wpa_cli action scripts:
          WPA_CTRL_DIR is the current control interface directory
        * driver_ndis: added support for using NDISUIO instead of WinPcap for
          OID set/query operations (CONFIG_USE_NDISUIO=y in .config); with new
          l2_packet_ndis (CONFIG_L2_PACKET=ndis), this can be used to build
          wpa_supplicant without requiring WinPcap; note that using NDISUIO
          requires that WZC is disabled (net stop wzcsvc) since NDISUIO allows
          only one application to open the device
        * changed NDIS driver naming to only include device GUID, e.g.,
          {7EE3EFE5-C165-472F-986D-F6FBEDFE8C8D}, instead of including WinPcap
          specific \Device\NPF_ prefix before the GUID; the prefix is still
          allowed for backwards compatibility, but it is not required anymore
          when specifying the interface
        * driver_ndis: re-initialize driver interface is the adapter is removed
          and re-inserted [Bug 159]
        * driver_madwifi: fixed TKIP and CCMP sequence number configuration on
          big endian hosts [Bug 146]

2006-04-27 - v0.5.3
        * fixed EAP-GTC response to include correct user identity when run as
          phase 2 method of EAP-FAST (i.e., EAP-FAST did not work in v0.5.2)
        * driver_ndis: Fixed encryption mode configuration for unencrypted
          networks (some NDIS drivers ignored this, but others, e.g., Broadcom,
          refused to associate with open networks) [Bug 106]
        * driver_ndis: use BSSID OID polling to detect when IBSS network is
          formed even when ndis_events code is included since some NDIS drivers
          do not generate media connect events in IBSS mode
        * config_winreg: allow global ctrl_interface parameter to be configured
          in Windows registry
        * config_winreg: added support for saving configuration data into
          Windows registry
        * added support for controlling network device operational state
          (dormant/up) for Linux 2.6.17 to improve DHCP processing (see
          http://www.flamewarmaster.de/software/dhcpclient/ for a DHCP client
          that can use this information)
        * driver_wext: added support for WE-21 change to SSID configuration
        * driver_wext: fixed privacy configuration for static WEP keys mode
          [Bug 140]
        * added an optional driver_ops callback for MLME-SETPROTECTION.request
          primitive
        * added support for EAP-SAKE (no EAP method number allocated yet, so
          this is using the same experimental type 255 as EAP-PSK)
        * added support for dynamically loading EAP methods (.so files) instead
          of requiring them to be statically linked in; this is disabled by
          default (see CONFIG_DYNAMIC_EAP_METHODS in defconfig for information
          on how to use this)

2006-03-19 - v0.5.2
        * do not try to use USIM APDUs when initializing PC/SC for SIM card
          access for a network that has not enabled EAP-AKA
        * fixed EAP phase 2 Nak for EAP-{PEAP,TTLS,FAST} (this was broken in
          v0.5.1 due to the new support for expanded EAP types)
        * added support for generating EAP Expanded Nak
        * try to fetch scan results once before requesting new scan when
          starting up in ap_scan=1 mode (this can speed up initial association
          a lot with, e.g., madwifi-ng driver)
        * added support for receiving EAPOL frames from a Linux bridge
          interface (-bbr0 on command line)
        * fixed EAPOL re-authentication for sessions that used PMKSA caching
        * changed EAP method registration to use a dynamic list of methods
          instead of a static list generated at build time
        * fixed PMKSA cache deinitialization not to use freed memory when
          removing PMKSA entries
        * fixed a memory leak in EAP-TTLS re-authentication
        * reject WPA/WPA2 message 3/4 if it does not include any valid
          WPA/RSN IE
        * driver_wext: added fallback to use SIOCSIWENCODE for setting auth_alg
          if the driver does not support SIOCSIWAUTH

2006-01-29 - v0.5.1
        * driver_test: added better support for multiple APs and STAs by using
          a directory with sockets that include MAC address for each device in
          the name (driver_param=test_dir=/tmp/test)
        * added support for EAP expanded type (vendor specific EAP methods)
        * added AP_SCAN command into ctrl_iface so that ap_scan configuration
          option can be changed if needed
        * wpa_cli/wpa_gui: skip non-socket files in control directory when
          using UNIX domain sockets; this avoids selecting an incorrect
          interface (e.g., a PID file could be in this directory, even though
          use of this directory for something else than socket files is not
          recommended)
        * fixed TLS library deinitialization after RSN pre-authentication not
          to disable TLS library for normal authentication
        * driver_wext: Remove null-termination from SSID length if the driver
          used it; some Linux drivers do this and they were causing problems in
          wpa_supplicant not finding matching configuration block. This change
          would break a case where the SSID actually ends in '\0', but that is
          not likely to happen in real use.
        * fixed PMKSA cache processing not to trigger deauthentication if the
          current PMKSA cache entry is replaced with a valid new entry
        * fixed PC/SC initialization for ap_scan != 1 modes (this fixes
          EAP-SIM and EAP-AKA with real SIM/USIM card when using ap_scan=0 or
          ap_scan=2)

2005-12-18 - v0.5.0 (beginning of 0.5.x development releases)
        * added experimental STAKey handshake implementation for IEEE 802.11e
          direct link setup (DLS); note: this is disabled by default in both
          build and runtime configuration (can be enabled with CONFIG_STAKEY=y
          and stakey=1)
        * fixed EAP-SIM and EAP-AKA pseudonym and fast re-authentication to
          decrypt AT_ENCR_DATA attributes correctly
        * fixed EAP-AKA to allow resynchronization within the same session
        * made code closer to ANSI C89 standard to make it easier to port to
          other C libraries and compilers
        * started moving operating system or C library specific functions into
          wrapper functions defined in os.h and implemented in os_*.c to make
          code more portable
        * wpa_supplicant can now be built with Microsoft Visual C++
          (e.g., with the freely available Toolkit 2003 version or Visual
          C++ 2005 Express Edition and Platform SDK); see nmake.mak for an
          example makefile for nmake
        * added support for using Windows registry for command line parameters
          (CONFIG_MAIN=main_winsvc) and configuration data
          (CONFIG_BACKEND=winreg); see win_example.reg for an example registry
          contents; this version can be run both as a Windows service and as a
          normal application; 'wpasvc.exe app' to start as applicant,
          'wpasvc.exe reg <full path to wpasvc.exe>' to register a service,
          'net start wpasvc' to start the service, 'wpasvc.exe unreg' to
          unregister a service
        * made it possible to link ndis_events.exe functionality into
          wpa_supplicant.exe by defining CONFIG_NDIS_EVENTS_INTEGRATED
        * added better support for multiple control interface backends
          (CONFIG_CTRL_IFACE option); currently, 'unix' and 'udp' are supported
        * fixed PC/SC code to use correct length for GSM AUTH command buffer
          and to not use pioRecvPci with SCardTransmit() calls; these were not
          causing visible problems with pcsc-lite, but Windows Winscard.dll
          refused the previously used parameters; this fixes EAP-SIM and
          EAP-AKA authentication using SIM/USIM card under Windows
        * added new event loop implementation for Windows using
          WaitForMultipleObject() instead of select() in order to allow waiting
          for non-socket objects; this can be selected with
          CONFIG_ELOOP=eloop_win in .config
        * added support for selecting l2_packet implementation in .config
          (CONFIG_L2_PACKET; following options are available now: linux, pcap,
          winpcap, freebsd, none)
        * added new l2_packet implementation for WinPcap
          (CONFIG_L2_PACKET=winpcap) that uses a separate receive thread to
          reduce latency in EAPOL receive processing from about 100 ms to about
          3 ms
        * added support for EAP-FAST key derivation using other ciphers than
          RC4-128-SHA for authentication and AES128-SHA for provisioning
        * added support for configuring CA certificate as DER file and as a
          configuration blob
        * fixed private key configuration as configuration blob and added
          support for using PKCS#12 as a blob
        * tls_gnutls: added support for using PKCS#12 files; added support for
          session resumption
        * added support for loading trusted CA certificates from Windows
          certificate store: ca_cert="cert_store://<name>", where <name> is
          likely CA (Intermediate CA certificates) or ROOT (root certificates)
        * added C version of ndis_events.cpp and made it possible to build this
          with MinGW so that CONFIG_NDIS_EVENTS_INTEGRATED can be used more
          easily on cross-compilation builds
        * added wpasvc.exe into Windows binary release; this is an alternative
          version of wpa_supplicant.exe with configuration backend using
          Windows registry and with the entry point designed to run as a
          Windows service
        * integrated ndis_events.exe functionality into wpa_supplicant.exe and
          wpasvc.exe and removed this additional tool from the Windows binary
          release since it is not needed anymore
        * load winscard.dll functions dynamically when building with MinGW
          since MinGW does not yet include winscard library

2005-11-20 - v0.4.7 (beginning of 0.4.x stable releases)
        * l2_packet_pcap: fixed wired IEEE 802.1X authentication with libpcap
          and WinPcap to receive frames sent to PAE group address
        * disable EAP state machine when IEEE 802.1X authentication is not used
          in order to get rid of bogus "EAP failed" messages
        * fixed OpenSSL error reporting to go through all pending errors to
          avoid confusing reports of old errors being reported at later point
          during handshake
        * fixed configuration file updating to not write empty variables
          (e.g., proto or key_mgmt) that the file parser would not accept
        * fixed ADD_NETWORK ctrl_iface command to use the same default values
          for variables as empty network definitions read from config file
          would get
        * fixed EAP state machine to not discard EAP-Failure messages in many
          cases (e.g., during TLS handshake)
        * fixed a infinite loop in private key reading if the configured file
          cannot be parsed successfully
        * driver_madwifi: added support for madwifi-ng
        * wpa_gui: do not display password/PSK field contents
        * wpa_gui: added CA certificate configuration
        * driver_ndis: fixed scan request in ap_scan=2 mode not to change SSID
        * driver_ndis: include Beacon IEs in AssocInfo in order to notice if
          the new AP is using different WPA/RSN IE
        * use longer timeout for IEEE 802.11 association to avoid problems with
          drivers that may take more than five second to associate

2005-10-27 - v0.4.6
        * allow fallback to WPA, if mixed WPA+WPA2 networks have mismatch in
          RSN IE, but WPA IE would match with wpa_supplicant configuration
        * added support for named configuration blobs in order to avoid having
          to use file system for external files (e.g., certificates);
          variables can be set to "blob://<blob name>" instead of file path to
          use a named blob; supported fields: pac_file, client_cert,
          private_key
        * fixed RSN pre-authentication (it was broken in the clean up of WPA
          state machine interface in v0.4.5)
        * driver_madwifi: set IEEE80211_KEY_GROUP flag for group keys to make
          sure the driver configures broadcast decryption correctly
        * added ca_path (and ca_path2) configuration variables that can be used
          to configure OpenSSL CA path, e.g., /etc/ssl/certs, for using the
          system-wide trusted CA list
        * added support for starting wpa_supplicant without a configuration
          file (-C argument must be used to set ctrl_interface parameter for
          this case; in addition, -p argument can be used to provide
          driver_param; these new arguments can also be used with a
          configuration to override the values from the configuration)
        * added global control interface that can be optionally used for adding
          and removing network interfaces dynamically (-g command line argument
          for both wpa_supplicant and wpa_cli) without having to restart
          wpa_supplicant process
        * wpa_gui:
          - try to save configuration whenever something is modified
          - added WEP key configuration
          - added possibility to edit the current network configuration
        * driver_ndis: fixed driver polling not to increase frequency on each
          received EAPOL frame due to incorrectly cancelled timeout
        * added simple configuration file examples (in examples subdirectory)
        * fixed driver_wext.c to filter wireless events based on ifindex to
          avoid interfaces receiving events from other interfaces
        * delay sending initial EAPOL-Start couple of seconds to speed up
          authentication for the most common case of Authenticator starting
          EAP authentication immediately after association

2005-09-25 - v0.4.5
        * added a workaround for clearing keys with ndiswrapper to allow
          roaming from WPA enabled AP to plaintext one
        * added docbook documentation (doc/docbook) that can be used to
          generate, e.g., man pages
        * l2_packet_linux: use socket type SOCK_DGRAM instead of SOCK_RAW for
          PF_PACKET in order to prepare for network devices that do not use
          Ethernet headers (e.g., network stack with native IEEE 802.11 frames)
        * use receipt of EAPOL-Key frame as a lower layer success indication
          for EAP state machine to allow recovery from dropped EAP-Success
          frame
        * cleaned up internal EAPOL frame processing by not including link
          layer (Ethernet) header during WPA and EAPOL/EAP processing; this
          header is added only when transmitted the frame; this makes it easier
          to use wpa_supplicant on link layers that use different header than
          Ethernet
        * updated EAP-PSK to use draft 9 by default since this can now be
          tested with hostapd; removed support for draft 3, including
          server_nai configuration option from network blocks
        * driver_wired: add PAE address to the multicast address list in order
          to be able to receive EAPOL frames with drivers that do not include
          these multicast addresses by default
        * driver_wext: add support for WE-19
        * added support for multiple configuration backends (CONFIG_BACKEND
          option); currently, only 'file' is supported (i.e., the format used
          in wpa_supplicant.conf)
        * added support for updating configuration ('wpa_cli save_config');
          this is disabled by default and can be enabled with global
          update_config=1 variable in wpa_supplicant.conf; this allows wpa_cli
          and wpa_gui to store the configuration changes in a permanent store
        * added GET_NETWORK ctrl_iface command
          (e.g., 'wpa_cli get_network 0 ssid')

2005-08-21 - v0.4.4
        * replaced OpenSSL patch for EAP-FAST support
          (openssl-tls-extensions.patch) with a more generic and correct
          patch (the new patch is not compatible with the previous one, so the
          OpenSSL library will need to be patched with the new patch in order
          to be able to build wpa_supplicant with EAP-FAST support)
        * added support for using Windows certificate store (through CryptoAPI)
          for client certificate and private key operations (EAP-TLS)
          (see wpa_supplicant.conf for more information on how to configure
          this with private_key)
        * ported wpa_gui to Windows
        * added Qt4 version of wpa_gui (wpa_gui-qt4 directory); this can be
          built with the open source version of the Qt4 for Windows
        * allow non-WPA modes (e.g., IEEE 802.1X with dynamic WEP) to be used
          with drivers that do not support WPA
        * ndis_events: fixed Windows 2000 support
        * added support for enabling/disabling networks from the list of all
          configured networks ('wpa_cli enable_network <network id>' and
          'wpa_cli disable_network <network id>')
        * added support for adding and removing network from the current
          configuration ('wpa_cli add_network' and 'wpa_cli remove_network
          <network id>'); added networks are disabled by default and they can
          be enabled with enable_network command once the configuration is done
          for the new network; note: configuration file is not yet updated, so
          these new networks are lost when wpa_supplicant is restarted
        * added support for setting network configuration parameters through
          the control interface, for example:
          wpa_cli set_network 0 ssid "\"my network\""
        * fixed parsing of strings that include both " and # within double
          quoted area (e.g., "start"#end")
        * added EAP workaround for PEAP session resumption: allow outer,
          i.e., not tunneled, EAP-Success to terminate session since; this can
          be disabled with eap_workaround=0
          (this was allowed for PEAPv1 before, but now it is also allowed for
          PEAPv0 since at least one RADIUS authentication server seems to be
          doing this for PEAPv0, too)
        * wpa_gui: added preliminary support for adding new networks to the
          wpa_supplicant configuration (double click on the scan results to
          open network configuration)

2005-06-26 - v0.4.3
        * removed interface for external EAPOL/EAP supplicant (e.g.,
          Xsupplicant), (CONFIG_XSUPPLICANT_IFACE) since it is not required
          anymore and is unlikely to be used by anyone
        * driver_ndis: fixed WinPcap 3.0 support
        * fixed build with CONFIG_DNET_PCAP=y on Linux
        * l2_packet: moved different implementations into separate files
          (l2_packet_*.c)

2005-06-12 - v0.4.2
        * driver_ipw: updated driver structures to match with ipw2200-1.0.4
          (note: ipw2100-1.1.0 is likely to require an update to work with
          this)
        * added support for using ap_scan=2 mode with multiple network blocks;
          wpa_supplicant will go through the networks one by one until the
          driver reports a successful association; this uses the same order for
          networks as scan_ssid=1 scans, i.e., the priority field is ignored
          and the network block order in the file is used instead
        * fixed a potential issue in RSN pre-authentication ending up using
          freed memory if pre-authentication times out
        * added support for matching alternative subject name extensions of the
          authentication server certificate; new configuration variables
          altsubject_match and altsubject_match2
        * driver_ndis: added support for IEEE 802.1X authentication with wired
          NDIS drivers
        * added support for querying private key password (EAP-TLS) through the
          control interface (wpa_cli/wpa_gui) if one is not included in the
          configuration file
        * driver_broadcom: fixed couple of memory leaks in scan result
          processing
        * EAP-PAX is now registered as EAP type 46
        * fixed EAP-PAX MAC calculation
        * fixed EAP-PAX CK and ICK key derivation
        * added support for using password with EAP-PAX (as an alternative to
          entering key with eappsk); SHA-1 hash of the password will be used as
          the key in this case
        * added support for arbitrary driver interface parameters through the
          configuration file with a new driver_param field; this adds a new
          driver_ops function set_param()
        * added possibility to override l2_packet module with driver interface
          API (new send_eapol handler); this can be used to implement driver
          specific TX/RX functions for EAPOL frames
        * fixed ctrl_interface_group processing for the case where gid is
          entered as a number, not group name
        * driver_test: added support for testing hostapd with wpa_supplicant
          by using test driver interface without any kernel drivers or network
          cards

2005-05-22 - v0.4.1
        * driver_madwifi: fixed WPA/WPA2 mode configuration to allow EAPOL
          packets to be encrypted; this was apparently broken by the changed
          ioctl order in v0.4.0
        * driver_madwifi: added preliminary support for compiling against 'BSD'
          branch of madwifi CVS tree
        * added support for EAP-MSCHAPv2 password retries within the same EAP
          authentication session
        * added support for password changes with EAP-MSCHAPv2 (used when the
          password has expired)
        * added support for reading additional certificates from PKCS#12 files
          and adding them to the certificate chain
        * fixed association with IEEE 802.1X (no WPA) when dynamic WEP keys
          were used
        * fixed a possible double free in EAP-TTLS fast-reauthentication when
          identity or password is entered through control interface
        * display EAP Notification messages to user through control interface
          with "CTRL-EVENT-EAP-NOTIFICATION" prefix
        * added GUI version of wpa_cli, wpa_gui; this is not build
          automatically with 'make'; use 'make wpa_gui' to build (this requires
          Qt development tools)
        * added 'disconnect' command to control interface for setting
          wpa_supplicant in state where it will not associate before
          'reassociate' command has been used
        * added support for selecting a network from the list of all configured
          networks ('wpa_cli select_network <network id>'; this disabled all
          other networks; to re-enable, 'wpa_cli select_network any')
        * added support for getting scan results through control interface
        * added EAP workaround for PEAPv1 session resumption: allow outer,
          i.e., not tunneled, EAP-Success to terminate session since; this can
          be disabled with eap_workaround=0

2005-04-25 - v0.4.0 (beginning of 0.4.x development releases)
        * added a new build time option, CONFIG_NO_STDOUT_DEBUG, that can be
          used to reduce the size of the wpa_supplicant considerably if
          debugging code is not needed
        * fixed EAPOL-Key validation to drop packets with invalid Key Data
          Length; such frames could have crashed wpa_supplicant due to buffer
          overflow
        * added support for wired authentication (IEEE 802.1X on wired
          Ethernet); driver interface 'wired'
        * obsoleted set_wpa() handler in the driver interface API (it can be
          replaced by moving enable/disable functionality into init()/deinit())
          (calls to set_wpa() are still present for backwards compatibility,
          but they may be removed in the future)
        * driver_madwifi: fixed association in plaintext mode
        * modified the EAP workaround that accepts EAP-Success with incorrect
          Identifier to be even less strict about verification in order to
          interoperate with some authentication servers
        * added support for sending TLS alerts
        * added support for 'any' SSID wildcard; if ssid is not configured or
          is set to an empty string, any SSID will be accepted for non-WPA AP
        * added support for asking PIN (for SIM) from frontends (e.g.,
          wpa_cli); if a PIN is needed, but not included in the configuration
          file, a control interface request is sent and EAP processing is
          delayed until the PIN is available
        * added support for using external devices (e.g., a smartcard) for
          private key operations in EAP-TLS (CONFIG_SMARTCARD=y in .config);
          new wpa_supplicant.conf variables:
          - global: opensc_engine_path, pkcs11_engine_path, pkcs11_module_path
          - network: engine, engine_id, key_id
        * added experimental support for EAP-PAX
        * added monitor mode for wpa_cli (-a<path to a program to run>) that
          allows external commands (e.g., shell scripts) to be run based on
          wpa_supplicant events, e.g., when authentication has been completed
          and data connection is ready; other related wpa_cli arguments:
          -B (run in background), -P (write PID file); wpa_supplicant has a new
          command line argument (-W) that can be used to make it wait until a
          control interface command is received in order to avoid missing
          events
        * added support for opportunistic WPA2 PMKSA key caching (disabled by
          default, can be enabled with proactive_key_caching=1)
        * fixed RSN IE in 4-Way Handshake message 2/4 for the case where
          Authenticator rejects PMKSA caching attempt and the driver is not
          using assoc_info events
        * added -P<pid file> argument for wpa_supplicant to write the current
          process id into a file

2005-02-12 - v0.3.7 (beginning of 0.3.x stable releases)
        * added new phase1 option parameter, include_tls_length=1, to force
          wpa_supplicant to add TLS Message Length field to all TLS messages
          even if the packet is not fragmented; this may be needed with some
          authentication servers
        * fixed WPA/RSN IE verification in message 3 of 4-Way Handshake when
          using drivers that take care of AP selection (e.g., when using
          ap_scan=2)
        * fixed reprocessing of pending request after ctrl_iface requests for
          identity/password/otp
        * fixed ctrl_iface requests for identity/password/otp in Phase 2 of
          EAP-PEAP and EAP-TTLS
        * all drivers using driver_wext: set interface up and select Managed
          mode when starting wpa_supplicant; set interface down when exiting
        * renamed driver_ipw2100.c to driver_ipw.c since it now supports both
          ipw2100 and ipw2200; please note that this also changed the
          configuration variable in .config to CONFIG_DRIVER_IPW

2005-01-24 - v0.3.6
        * fixed a busy loop introduced in v0.3.5 for scan result processing
          when no matching AP is found

2005-01-23 - v0.3.5
        * added a workaround for an interoperability issue with a Cisco AP
          when using WPA2-PSK
        * fixed non-WPA IEEE 802.1X to use the same authentication timeout as
          WPA with IEEE 802.1X (i.e., timeout 10 -> 70 sec to allow
          retransmission of dropped frames)
        * fixed issues with 64-bit CPUs and SHA1 cleanup in previous version
          (e.g., segfault when processing EAPOL-Key frames)
        * fixed EAP workaround and fast reauthentication configuration for
          RSN pre-authentication; previously these were disabled and
          pre-authentication would fail if the used authentication server
          requires EAP workarounds
        * added support for blacklisting APs that fail or timeout
          authentication in ap_scan=1 mode so that all APs are tried in cases
          where the ones with strongest signal level are failing authentication
        * fixed CA certificate loading after a failed EAP-TLS/PEAP/TTLS
          authentication attempt
        * allow EAP-PEAP/TTLS fast reauthentication only if Phase 2 succeeded
          in the previous authentication (previously, only Phase 1 success was
          verified)

2005-01-09 - v0.3.4
        * added preliminary support for IBSS (ad-hoc) mode configuration
          (mode=1 in network block); this included a new key_mgmt mode
          WPA-NONE, i.e., TKIP or CCMP with a fixed key (based on psk) and no
          key management; see wpa_supplicant.conf for more details and an
          example on how to configure this (note: this is currently implemented
          only for driver_hostapd.c, but the changes should be trivial to add
          in associate() handler for other drivers, too (assuming the driver
          supports WPA-None)
        * added preliminary port for native Windows (i.e., no cygwin) using
          mingw

2005-01-02 - v0.3.3
        * added optional support for GNU Readline and History Libraries for
          wpa_cli (CONFIG_READLINE)
        * cleaned up EAP state machine <-> method interface and number of
          small problems with error case processing not terminating on
          EAP-Failure but waiting for timeout
        * added couple of workarounds for interoperability issues with a
          Cisco AP when using WPA2
        * added support for EAP-FAST (draft-cam-winget-eap-fast-00.txt);
          Note: This requires a patch for openssl to add support for TLS
          extensions and number of workarounds for operations without
          certificates. Proof of concept type of experimental patch is
          included in openssl-tls-extensions.patch.

2004-12-19 - v0.3.2
        * fixed private key loading for cases where passphrase is not set
        * fixed Windows/cygwin L2 packet handler freeing; previous version
          could cause a segfault when RSN pre-authentication was completed
        * added support for PMKSA caching with drivers that generate RSN IEs
          (e.g., NDIS); currently, this is only implemented in driver_ndis.c,
          but similar code can be easily added to driver_ndiswrapper.c once
          ndiswrapper gets full support for RSN PMKSA caching
        * improved recovery from PMKID mismatches by requesting full EAP
          authentication in case of failed PMKSA caching attempt
        * driver_ndis: added support for NDIS NdisMIncidateStatus() events
          (this requires that ndis_events is ran while wpa_supplicant is
          running)
        * driver_ndis: use ADD_WEP/REMOVE_WEP when configuring WEP keys
        * added support for driver interfaces to replace the interface name
          based on driver/OS specific mapping, e.g., in case of driver_ndis,
          this allows the beginning of the adapter description to be used as
          the interface name
        * added support for CR+LF (Windows-style) line ends in configuration
          file
        * driver_ndis: enable radio before starting scanning, disable radio
          when exiting
        * modified association event handler to set portEnabled = FALSE before
          clearing port Valid in order to reset EAP state machine and avoid
          problems with new authentication getting ignored because of state
          machines ending up in AUTHENTICATED/SUCCESS state based on old
          information
        * added support for driver events to add PMKID candidates in order to
          allow drivers to give priority to most likely roaming candidates
        * driver_hostap: moved PrivacyInvoked configuration to associate()
          function so that this will not be set for plaintext connections
        * added KEY_MGMT_802_1X_NO_WPA as a new key_mgmt type so that driver
          interface can distinguish plaintext and IEEE 802.1X (no WPA)
          authentication
        * fixed static WEP key configuration to use broadcast/default type for
          all keys (previously, the default TX key was configured as pairwise/
          unicast key)
        * driver_ndis: added legacy WPA capability detection for non-WPA2
          drivers
        * added support for setting static WEP keys for IEEE 802.1X without
          dynamic WEP keying (eapol_flags=0)

2004-12-12 - v0.3.1
        * added support for reading PKCS#12 (PFX) files (as a replacement for
          PEM/DER) to get certificate and private key (CONFIG_PKCS12)
        * fixed compilation with CONFIG_PCSC=y
        * added new ap_scan mode, ap_scan=2, for drivers that take care of
          association, but need to be configured with security policy and SSID,
          e.g., ndiswrapper and NDIS driver; this mode should allow such
          drivers to work with hidden SSIDs and optimized roaming; when
          ap_scan=2 is used, only the first network block in the configuration
          file is used and this configuration should have explicit security
          policy (i.e., only one option in the lists) for key_mgmt, pairwise,
          group, proto variables
        * added experimental port of wpa_supplicant for Windows
          - driver_ndis.c driver interface (NDIS OIDs)
          - currently, this requires cygwin and WinPcap
          - small utility, win_if_list, can be used to get interface name
        * control interface can now be removed at build time; add
          CONFIG_CTRL_IFACE=y to .config to maintain old functionality
        * optional Xsupplicant interface can now be removed at build time;
          (CONFIG_XSUPPLICANT_IFACE=y in .config to bring it back)
        * added auth_alg to driver interface associate() parameters to make it
          easier for drivers to configure authentication algorithm as part of
          the association

2004-12-05 - v0.3.0 (beginning of 0.3.x development releases)
        * driver_broadcom: added new driver interface for Broadcom wl.o driver
          (a generic driver for Broadcom IEEE 802.11a/g cards)
        * wpa_cli: fixed parsing of -p <path> command line argument
        * PEAPv1: fixed tunneled EAP-Success reply handling to reply with TLS
          ACK, not tunneled EAP-Success (of which only the first byte was
          actually send due to a bug in previous code); this seems to
          interoperate with most RADIUS servers that implements PEAPv1
        * PEAPv1: added support for terminating PEAP authentication on tunneled
          EAP-Success message; this can be configured by adding
          peap_outer_success=0 on phase1 parameters in wpa_supplicant.conf
          (some RADIUS servers require this whereas others require a tunneled
          reply
        * PEAPv1: changed phase1 option peaplabel to use default to 0, i.e., to
          the old label for key derivation; previously, the default was 1,
          but it looks like most existing PEAPv1 implementations use the old
          label which is thus more suitable default option
        * added support for EAP-PSK (draft-bersani-eap-psk-03.txt)
        * fixed parsing of wep_tx_keyidx
        * added support for configuring list of allowed Phase 2 EAP types
          (for both EAP-PEAP and EAP-TTLS) instead of only one type
        * added support for configuring IEEE 802.11 authentication algorithm
          (auth_alg; mainly for using Shared Key authentication with static
          WEP keys)
        * added support for EAP-AKA (with UMTS SIM)
        * fixed couple of errors in PCSC handling that could have caused
          random-looking errors for EAP-SIM
        * added support for EAP-SIM pseudonyms and fast re-authentication
        * added support for EAP-TLS/PEAP/TTLS fast re-authentication (TLS
          session resumption)
        * added support for EAP-SIM with two challanges
          (phase1="sim_min_num_chal=3" can be used to require three challenges)
        * added support for configuring DH/DSA parameters for an ephemeral DH
          key exchange (EAP-TLS/PEAP/TTLS) using new configuration parameters
          dh_file and dh_file2 (phase 2); this adds support for using DSA keys
          and optional DH key exchange to achieve forward secracy with RSA keys
        * added support for matching subject of the authentication server
          certificate with a substring when using EAP-TLS/PEAP/TTLS; new
          configuration variables subject_match and subject_match2
        * changed SSID configuration in driver_wext.c (used by many driver
          interfaces) to use ssid_len+1 as the length for SSID since some Linux
          drivers expect this
        * fixed couple of unaligned reads in scan result parsing to fix WPA
          connection on some platforms (e.g., ARM)
        * added driver interface for Intel ipw2100 driver
        * added support for LEAP with WPA
        * added support for larger scan results report (old limit was 4 kB of
          data, i.e., about 35 or so APs) when using Linux wireless extensions
          v17 or newer
        * fixed a bug in PMKSA cache processing: skip sending of EAPOL-Start
          only if there is a PMKSA cache entry for the current AP
        * fixed error handling for case where reading of scan results fails:
          must schedule a new scan or wpa_supplicant will remain waiting
          forever
        * changed debug output to remove shared password/key material by
          default; all key information can be included with -K command line
          argument to match the previous behavior
        * added support for timestamping debug log messages (disabled by
          default, can be enabled with -t command line argument)
        * set pairwise/group cipher suite for non-WPA IEEE 802.1X to WEP-104
          if keys are not configured to be used; this fixes IEEE 802.1X mode
          with drivers that use this information to configure whether Privacy
          bit can be in Beacon frames (e.g., ndiswrapper)
        * avoid clearing driver keys if no keys have been configured since last
          key clear request; this seems to improve reliability of group key
          handshake for ndiswrapper & NDIS driver which seems to be suffering
          of some kind of timing issue when the keys are cleared again after
          association
        * changed driver interface API:
          - WPA_SUPPLICANT_DRIVER_VERSION define can be used to determine which
            version is being used (now, this is set to 2; previously, it was
            not defined)
          - pass pointer to private data structure to all calls
          - the new API is not backwards compatible; all in-tree driver
            interfaces has been converted to the new API
        * added support for controlling multiple interfaces (radios) per
          wpa_supplicant process; each interface needs to be listed on the
          command line (-c, -i, -D arguments) with -N as a separator
          (-cwpa1.conf -iwlan0 -Dhostap -N -cwpa2.conf -iath0 -Dmadwifi)
        * added a workaround for EAP servers that incorrectly use same Id for
          sequential EAP packets
        * changed libpcap/libdnet configuration to use .config variable,
          CONFIG_DNET_PCAP, instead of requiring Makefile modification
        * improved downgrade attack detection in IE verification of msg 3/4:
          verify both WPA and RSN IEs, if present, not only the selected one;
          reject the AP if an RSN IE is found in msg 3/4, but not in Beacon or
          Probe Response frame, and RSN is enabled in wpa_supplicant
          configuration
        * fixed WPA msg 3/4 processing to allow Key Data field contain other
          IEs than just one WPA IE
        * added support for FreeBSD and driver interface for the BSD net80211
          layer (CONFIG_DRIVER_BSD=y in .config); please note that some of the
          required kernel mods have not yet been committed
        * made EAP workarounds configurable; enabled by default, can be
          disabled with network block option eap_workaround=0

2004-07-17 - v0.2.4 (beginning of 0.2.x stable releases)
        * resolved couple of interoperability issues with EAP-PEAPv1 and
          Phase 2 (inner EAP) fragment reassembly
        * driver_madwifi: fixed WEP key configuration for IEEE 802.1X when the
          AP is using non-zero key index for the unicast key and key index zero
          for the broadcast key
        * driver_hostap: fixed IEEE 802.1X WEP key updates and
          re-authentication by allowing unencrypted EAPOL frames when not using
          WPA
        * added a new driver interface, 'wext', which uses only standard,
          driver independent functionality in Linux wireless extensions;
          currently, this can be used only for non-WPA IEEE 802.1X mode, but
          eventually, this is to be extended to support full WPA/WPA2 once
          Linux wireless extensions get support for this
        * added support for mode in which the driver is responsible for AP
          scanning and selection; this is disabled by default and can be
          enabled with global ap_scan=0 variable in wpa_supplicant.conf;
          this mode can be used, e.g., with generic 'wext' driver interface to
          use wpa_supplicant as IEEE 802.1X Supplicant with any Linux driver
          supporting wireless extensions.
        * driver_madwifi: fixed WPA2 configuration and scan_ssid=1 (e.g.,
          operation with an AP that does not include SSID in the Beacon frames)
        * added support for new EAP authentication methods:
          EAP-TTLS/EAP-OTP, EAP-PEAPv0/OTP, EAP-PEAPv1/OTP, EAP-OTP
        * added support for asking one-time-passwords from frontends (e.g.,
          wpa_cli); this 'otp' command works otherwise like 'password' command,
          but the password is used only once and the frontend will be asked for
          a new password whenever a request from authenticator requires a
          password; this can be used with both EAP-OTP and EAP-GTC
        * changed wpa_cli to automatically re-establish connection so that it
          does not need to be re-started when wpa_supplicant is terminated and
          started again
        * improved user data (identity/password/otp) requests through
          frontends: process pending EAPOL packets after getting new
          information so that full authentication does not need to be
          restarted; in addition, send pending requests again whenever a new
          frontend is attached
        * changed control frontends to use a new directory for socket files to
          make it easier for wpa_cli to automatically select between interfaces
          and to provide access control for the control interface;
          wpa_supplicant.conf: ctrl_interface is now a path
          (/var/run/wpa_supplicant is the recommended path) and
          ctrl_interface_group can be used to select which group gets access to
          the control interface;
          wpa_cli: by default, try to connect to the first interface available
          in /var/run/wpa_supplicant; this path can be overriden with -p option
          and an interface can be selected with -i option (i.e., in most common
          cases, wpa_cli does not need to get any arguments)
        * added support for LEAP
        * added driver interface for Linux ndiswrapper
        * added priority option for network blocks in the configuration file;
          this allows networks to be grouped based on priority (the scan
          results are searched for matches with network blocks in this order)

2004-06-20 - v0.2.3
        * sort scan results to improve AP selection
        * fixed control interface socket removal for some error cases
        * improved scan requesting and authentication timeout
        * small improvements/bug fixes for EAP-MSCHAPv2, EAP-PEAP, and
          TLS processing
        * PEAP version can now be forced with phase1="peapver=<ver>"
          (mostly for testing; by default, the highest version supported by
          both the Supplicant and Authentication Server is selected
          automatically)
        * added support for madwifi driver (Atheros ar521x)
        * added a workaround for cases where AP sets Install Tx/Rx bit for
          WPA Group Key messages when pairwise keys are used (without this,
          the Group Key would be used for Tx and the AP would drop frames
          from the station)
        * added GSM SIM/USIM interface for GSM authentication algorithm for
          EAP-SIM; this requires pcsc-lite
        * added support for ATMEL AT76C5XXx driver
        * fixed IEEE 802.1X WEP key derivation in the case where Authenticator
          does not include key data in the EAPOL-Key frame (i.e., part of
          EAP keying material is used as data encryption key)
        * added support for using plaintext and static WEP networks
          (key_mgmt=NONE)

2004-05-31 - v0.2.2
        * added support for new EAP authentication methods:
          EAP-TTLS/EAP-MD5-Challenge
          EAP-TTLS/EAP-GTC
          EAP-TTLS/EAP-MSCHAPv2
          EAP-TTLS/EAP-TLS
          EAP-TTLS/MSCHAPv2
          EAP-TTLS/MSCHAP
          EAP-TTLS/PAP
          EAP-TTLS/CHAP
          EAP-PEAP/TLS
          EAP-PEAP/GTC
          EAP-PEAP/MD5-Challenge
          EAP-GTC
          EAP-SIM (not yet complete; needs GSM/SIM authentication interface)
        * added support for anonymous identity (to be used when identity is
          sent in plaintext; real identity will be used within TLS protected
          tunnel (e.g., with EAP-TTLS)
        * added event messages from wpa_supplicant to frontends, e.g., wpa_cli
        * added support for requesting identity and password information using
          control interface; in other words, the password for EAP-PEAP or
          EAP-TTLS does not need to be included in the configuration file since
          a frontand (e.g., wpa_cli) can ask it from the user
        * improved RSN pre-authentication to use a candidate list and process
          all candidates from each scan; not only one per scan
        * fixed RSN IE and WPA IE capabilities field parsing
        * ignore Tx bit in GTK IE when Pairwise keys are used
        * avoid making new scan requests during IEEE 802.1X negotiation
        * use openssl/libcrypto for MD5 and SHA-1 when compiling wpa_supplicant
          with TLS support (this replaces the included implementation with
          library code to save about 8 kB since the library code is needed
          anyway for TLS)
        * fixed WPA-PSK only mode when compiled without IEEE 802.1X support
          (i.e., without CONFIG_IEEE8021X_EAPOL=y in .config)

2004-05-06 - v0.2.1
        * added support for internal IEEE 802.1X (actually, IEEE 802.1aa/D6.1)
          Supplicant
          - EAPOL state machines for Supplicant [IEEE 802.1aa/D6.1]
          - EAP peer state machine [draft-ietf-eap-statemachine-02.pdf]
          - EAP-MD5 (cannot be used with WPA-RADIUS)
            [draft-ietf-eap-rfc2284bis-09.txt]
          - EAP-TLS [RFC 2716]
          - EAP-MSCHAPv2 (currently used only with EAP-PEAP)
          - EAP-PEAP/MSCHAPv2 [draft-josefsson-pppext-eap-tls-eap-07.txt]
            [draft-kamath-pppext-eap-mschapv2-00.txt]
            (PEAP version 0, 1, and parts of 2; only 0 and 1 are enabled by
            default; tested with FreeRADIUS, Microsoft IAS, and Funk Odyssey)
          - new configuration file options: eap, identity, password, ca_cert,
            client_cert, privatekey, private_key_passwd
          - Xsupplicant is not required anymore, but it can be used by
            disabling the internal IEEE 802.1X Supplicant with -e command line
            option
          - this code is not included in the default build; Makefile need to
            be edited for this (uncomment lines for selected functionality)
          - EAP-TLS and EAP-PEAP require openssl libraries
        * use module prefix in debug messages (WPA, EAP, EAP-TLS, ..)
        * added support for non-WPA IEEE 802.1X mode with dynamic WEP keys
          (i.e., complete IEEE 802.1X/EAP authentication and use IEEE 802.1X
           EAPOL-Key frames instead of WPA key handshakes)
        * added support for IEEE 802.11i/RSN (WPA2)
          - improved PTK Key Handshake
          - PMKSA caching, pre-authentication
        * fixed wpa_supplicant to ignore possible extra data after WPA
          EAPOL-Key packets (this fixes 'Invalid EAPOL-Key MIC when using
          TPTK' error from message 3 of 4-Way Handshake in case the AP
          includes extra data after the EAPOL-Key)
        * added interface for external programs (frontends) to control
          wpa_supplicant
          - CLI example (wpa_cli) with interactive mode and command line
            mode
          - replaced SIGUSR1 status/statistics with the new control interface
        * made some feature compile time configurable
          - .config file for make
          - driver interfaces (hostap, hermes, ..)
          - EAPOL/EAP functions

2004-02-15 - v0.2.0
        * Initial version of wpa_supplicant