Changes for page How to send none encryption LoRaWAN Packet
Last modified by Xiaoling on 2023/04/19 17:49
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... ... @@ -1,32 +1,64 @@ 1 -{{box cssClass="floatinginfobox" title="**Contents**"}} 2 -{{toc/}} 3 -{{/box}} 1 += 1. Introduce = 4 4 5 - =Paragraph1=3 +A standard LoRaWAN packet via UDP packet forward to LoRaWAN server is AES128 encryption. In this chapter, we will show how this packet looks like in the server and see the possibility to get the content of this packet. 6 6 7 - Loremipsumdolor sitamet, consectetur adipiscing elit, seddo eiusmod temporididunt ut labore et doloremagna aliqua. Ut enimd minim veniam, quisnostrud exercitation ullamco laborisnisi ut aliquipex ea commodo consequat. Duis aute irure dolor in reprehenderitin voluptatevelitesse cillum dolore eu fugiatnullapariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa quiofficia deserunt mollitanim idestlaborum.5 +[[image:https://wiki.dragino.com/images/thumb/3/36/Unencrypt_Network_3.png/600px-Unencrypt_Network_3.png||height="476" width="600"]] 8 8 9 - == Sub-paragraph==7 +Unencrypt Network modified from LoRaWAN 10 10 11 - Loremipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.Ut enimad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquipexea commodo consequat. Duis aute irure dolor in reprehenderitin voluptatevelit esse cillum dolore eu fugiat nullapariatur. Excepteursint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.9 += 2. Analyze the LoRaWAN packet = 12 12 13 - ==Sub-paragraph==11 +If the gateway is connected to LoRaWAN server via UDP packet fordward. We can set the server address to a UDP server to get the LoRaWAN packets. 14 14 15 - Loremipsumdolor sitamet, consectetur adipiscing elit, seddo eiusmod temporididunt ut labore et doloremagna aliqua. Ut enimd minim veniam, quisnostrud exercitation ullamco laborisnisi ut aliquipex ea commodo consequat. Duis aute irure dolor in reprehenderitn voluptate velit esse cillum dolore eu fugiatnulla pariatur.Excepteur sint occaecat cupidatat nonproident, sunt inculpa quifficia deserunt mollitanim idestlaborum.13 +[[image:https://wiki.dragino.com/images/thumb/5/57/None_Encryption_1.png/600px-None_Encryption_1.png||height="259" width="600"]] 16 16 17 - ===Sub-sub paragraph ===15 +UDP Server 18 18 19 -Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. 20 20 18 +We can get one of the LoRaWAN packet and analyze it. See below 21 21 22 - = Paragraph2=20 +[[image:https://wiki.dragino.com/images/thumb/b/b9/None_Encryption_2.png/600px-None_Encryption_2.png||height="497" width="600"]] 23 23 24 - Lorem ipsum dolor sit amet, consecteturadipiscing elit, seddo eiusmodtempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderitin voluptate velit esse cillumdolore eu fugiatnullapariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.22 +Analyze the data 25 25 26 - ==Sub-paragraph==24 +From above screen shot, we can see most of the meaning except this "data":"QHxqASaAygwCXrumS1oFsgRq". This is the AES128 encryption data we mention above, it is base64 format. To decode this data, we need to have the APP Session Key and Network Session Key of this end node. If we have these two keys, we are able to decode this packet by some LoRaWAN decode website like: [[LoRaWAN Decode Website>>url:https://lorawan-packet-decoder-0ta6puiniaut.runkit.sh/]]. 27 27 28 -Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. 29 29 30 - ==Sub-paragraph==27 +Below is an example, from 31 31 32 -Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. 29 +[[image:https://wiki.dragino.com/images/thumb/4/4c/None_Encryption_3.png/600px-None_Encryption_3.png||height="388" width="600"]] 30 + 31 +Decode the packet 32 + 33 += 3. Difference between OTAA and ABP mode = 34 + 35 +There are two mode for End Node: 36 + 37 +* OTAA: Over the air activation. In this mode, the end node will send a Join Request to server, server will reply with a Join Accept and the end node will parse this Join Accept message to get the Dev Addr / APP Session Key(AppSkey / Network Session Key(NwkSKey). Because the AppSkey and NwkSkey is dynamic, OTAA mode provide more security. 38 +* ABP: Activation by personalization. There is no hand-shake with LoRaWAN server for activition. The end node will use fix Dev Addr / APP Session Key(AppSkey / Network Session Key(NwkSKey) to upload the packet. So the packet can be decode if someone know these fix keys. 39 + 40 += 4. Get and decode the packet = 41 + 42 +According to above, it is possible to get the payload from sensor without LoRaWAN server: 43 + 44 +1. Setting the end node to ABP mode 45 +1. Add decode program and add the keys of the sensor. So to get the payload. There is an example for such application, see [[Communication with ABP End Node>>url:https://wiki.dragino.com/index.php/Communication_with_ABP_End_Node]] 46 + 47 += 5. Use an unencrypt firmware = 48 + 49 +If user doesn't care about the security of the data and use Dragino end node, it is possible that we provide a firmware without AES128 encrytion, so the server no need to decode packet. Please note this software is no LoRaWAN compatible and no security. 50 + 51 +The software will disable encryption, so the LoRaWAN payload raw "data":"QHxqASaAygwCXrumS1oFsgRq" will looks like "data":"4068370126000000000c9e11223361898841", and the meaning is as below: 52 + 53 +[[image:https://wiki.dragino.com/images/thumb/d/d6/None_Encryption_4.png/600px-None_Encryption_4.png||height="70" width="600"]] 54 + 55 +Unencrypt packet 56 + 57 + 58 += 6. limitation = 59 + 60 +* None standard LoRaWAN protocol, it is not compatible with LoRaWAN server. 61 +* No device management / ADR management defined in LoRaWAN protocol 62 +* No security. 63 +* No Downlink 64 +* Only use for ABP