X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/hmcfgusb/blobdiff_plain/e052333d36a748d0ecbf1304ce1acc6301f7895c..e0f1c514a43cd104f406f25ef15a0f3fad750035:/README.md

diff --git a/README.md b/README.md
index 0071c6c..f16da3f 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ switches, sensors, ...).
 
 This repository contains, amongst others, an application, which emulates the
 HomeMatic LAN configuration adapter-protocol to make it possible to use the
-HM-CFG-USB in [Fhem][] or as a lan configuration tool for the CCU or the
+HM-CFG-USB in [Fhem][] or as a lan configuration tool for the [CCU][] or the
 HomeMatic windows configuration software, also supporting devices using
 AES-signing like [KeyMatic][].
 
@@ -18,6 +18,7 @@ AES-signing like [KeyMatic][].
 [HomeMatic]: http://www.homematic.com/
 [Fhem]: http://fhem.de/
 [KeyMatic]: http://www.elv.de/homematic-funk-tuerschlossantrieb-keymatic-silber-inkl-funk-handsender.html
+[CCU]: http://www.elv.de/homematic-zentrale-ccu-2.html
 
 ### Short hmland HowTo: ###
 
@@ -47,11 +48,11 @@ AES-signing like [KeyMatic][].
     ``define hmusb HMLAN 127.0.0.1:1234``  
     ``attr hmusb hmId <hmId>``
 
-**Important compatibility information:**
-If older Fhem-versions (before 2015-06-19) or other software ([Homegear][],
-[LXCCU][], a real [CCU][], Windows configuration software, ...) is used
-to connect to hmland, the `-I` switch might be needed to impersonate a
-LAN-interface (this replaces the identity string HM-USB-IF with HM-LAN-IF).
+**Important compatibility information:**  
+If older Fhem-versions (before 2015-06-19) or [Homegear][] before 2015-07-01
+is used to connect to hmland, the `-I` switch might be needed to
+impersonate a LAN-interface (this replaces the identity string HM-USB-IF with
+HM-LAN-IF). eQ-3 rfd (CCU and configuration software) works without this switch.
 Software which needs this will not keep a stable connection open to
 hmland without this switch. It was the hardcoded default in versions
 < 0.100.
@@ -59,23 +60,31 @@ hmland without this switch. It was the hardcoded default in versions
 This incompatibility is needed so connecting software is able to
 differentiate between HM-CFG-LAN and HM-CFG-USB.
 
+**Important security information:**  
+Versions before 0.101 do not correctly transmit the AES channel-mask
+to the HM-CFG-USB, which results in signature-requests not being generated
+by the device in most cases. This can lead to processing of unsigned messages
+by the host-software. If you are relying on authenticated messages
+(with e.g. aesCommReq in Fhem) from devices like door-sensors and remotes,
+you should upgrade to at least version 0.101.
+
 [releases-directory]: https://git.zerfleddert.de/hmcfgusb/releases/
 [hmcfgusb-HEAD-xxxxxxx.tar.gz]: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/hmcfgusb/snapshot/HEAD.tar.gz
 [Homegear]: https://www.homegear.eu/
-[LXCCU]: http://www.lxccu.com/
-[CCU]: http://www.elv.de/homematic-zentrale-ccu-2.html
 
 ### Updating the HM-CFG-USB firmware to version 0.967: ###
 
 1.  Compile the hmcfgusb utilities like in the hmland HowTo above
     (steps 1 to 5) and stay in the directory
-2.  Download the new firmware: [hmusbif.03c7.enc][]:
+2.  Download the new firmware: [hmusbif.03c7.enc][] (extracted from the
+    [Firmware update tool][]):
     `wget https://git.zerfleddert.de/hmcfgusb/firmware/hmusbif.03c7.enc`
 3.  Make sure that hmland is not running
 4.  Flash the update to the USB-stick:
     `./flash-hmcfgusb hmusbif.03c7.enc` (You might need to use `sudo` for this)
 
 [hmusbif.03c7.enc]: https://git.zerfleddert.de/hmcfgusb/firmware/hmusbif.03c7.enc
+[Firmware update tool]: http://www.eq-3.de/Downloads/Software/Firmware%20Update%20Tool/HM-CFG-USB-2_FW-UpdateTool-Usersoftware_V1_1_eQ-3_140619.zip
 
 ### Updating HomemMatic devices over the air (OTA) (also for CUL devices): ###
 
@@ -92,7 +101,17 @@ differentiate between HM-CFG-LAN and HM-CFG-USB.
     the new firmware to the device with serial *KEQ0123456*:  
      `./flash-ota -f hm_cc_rt_dn_update_V1_4_001_141020.eq3 -s KEQ0123456 -c /dev/ttyACM0`
 
+**Automatic firmware-updates:**  
+The options `-C`, `-D` and `-K` can be used to send a device to the
+bootloader automatically without manually rebooting the device while
+pressing buttons.
+
+**Acknowledgments:**  
+flash-ota uses the public domain [AES implementation by Brad Conte][] for answering
+signing-requests with culfw-devices.
+
 [eQ-3]: http://www.eq-3.de/downloads.html
 [culfw]: http://culfw.de/culfw.html
 [CUL]: http://busware.de/tiki-index.php?page=CUL
 [COC]: http://busware.de/tiki-index.php?page=COC
+[AES implementation by Brad Conte]: https://github.com/B-Con/crypto-algorithms