Replies: 6 comments 5 replies
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It's very much non-trivial. Depending on the protocol version that particular device uses you will need a combination of md5, CRC32, HMAC-SHA256, AES-ECB and AES-GCM functions to properly encrypt the payload to control the device. Some devices also require a 3-way session key negotiation as well. You're looking at a couple thousand lines of code at a minimum. |
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I’m looking at tailoring a specific on call (don’t need to send off because if inching) for a single specific device. If I know which version and protocol that device needs would it turn into a lot less code? I do think a full library that is supported by qsys would be beneficial but in my specific case I just need to send on to a very specific device |
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It's going to depend on the device version. If it's v3.1 or v3.3 then you can pre-compute everything and just send the command. v3.4 and v3.5 use per-session keys and will require full crypt libraries. |
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Qsys lua has access to all of that. I’m already using hmac 256 and sha256 to encrypt the api calls. I think when using the tinytua server app I saw 3.3 but it is something I can verify. It’s a couple years older kinda custom device for a large foam party system that hasn’t been updated in awhile. If that is something I could find out would it be possible getting help understanding which byte arrays to construct and process to send this one command?
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From: uzlonewolf ***@***.***>
Sent: Thursday, April 23, 2026 9:17:14 PM
To: jasonacox/tinytuya ***@***.***>
Cc: Torinth ***@***.***>; Author ***@***.***>
Subject: Re: [jasonacox/tinytuya] Tinytua in lua (Discussion #702)
It's going to depend on the device version. If it's v3.1 or v3.3 then you can pre-compute everything and just send the command. v3.4 and v3.5 use per-session keys and will require full crypt libraries.
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I't been a while since I've looked a v3.3 device, but IIRC you can just send the command using the command-line version of TinyTuya with debug mode turned on, and then just copy-n-paste the resulting encrypted command. I.e. That 'DEBUG:payload encrypted' line is the entire TCP packet encoded in hex - just open a connection to the device and send it (after hex->binary conversion of course). |
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Edit to add: command line will look something like |
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Awesome thank you very much! I can definitely run that and see what to send. I really appreciate the help!
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From: uzlonewolf ***@***.***>
Sent: Thursday, April 23, 2026 9:34:31 PM
To: jasonacox/tinytuya ***@***.***>
Cc: Torinth ***@***.***>; Author ***@***.***>
Subject: Re: [jasonacox/tinytuya] Tinytua in lua (Discussion #702)
Edit to add: command line will look something like python3 -m tinytuya -d on --id 'eb...5'
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Do the local keys expire and have to be re freshed?
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From: Jason Rainwater ***@***.***>
Sent: Thursday, April 23, 2026 9:35:50 PM
To: jasonacox/tinytuya ***@***.***>; jasonacox/tinytuya ***@***.***>
Cc: Author ***@***.***>
Subject: Re: [jasonacox/tinytuya] Tinytua in lua (Discussion #702)
Awesome thank you very much! I can definitely run that and see what to send. I really appreciate the help!
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From: uzlonewolf ***@***.***>
Sent: Thursday, April 23, 2026 9:34:31 PM
To: jasonacox/tinytuya ***@***.***>
Cc: Torinth ***@***.***>; Author ***@***.***>
Subject: Re: [jasonacox/tinytuya] Tinytua in lua (Discussion #702)
Edit to add: command line will look something like python3 -m tinytuya -d on --id 'eb...5'
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No, they'll only change if you re-pair the device using the app. |
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Awesome thanks!
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From: uzlonewolf ***@***.***>
Sent: Friday, April 24, 2026 8:13:57 AM
To: jasonacox/tinytuya ***@***.***>
Cc: Torinth ***@***.***>; Author ***@***.***>
Subject: Re: [jasonacox/tinytuya] Tinytua in lua (Discussion #702)
No, they'll only change if you re-pair the device using the app.
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Well that solution worked perfectly! I was able to use the debug payload to create what I needed in qsys to turn the device on. Thanks a bunch for the help!
…________________________________
From: Jason Rainwater ***@***.***>
Sent: Friday, April 24, 2026 8:19:01 AM
To: jasonacox/tinytuya ***@***.***>; jasonacox/tinytuya ***@***.***>
Cc: Author ***@***.***>
Subject: Re: [jasonacox/tinytuya] Tinytua in lua (Discussion #702)
Awesome thanks!
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From: uzlonewolf ***@***.***>
Sent: Friday, April 24, 2026 8:13:57 AM
To: jasonacox/tinytuya ***@***.***>
Cc: Torinth ***@***.***>; Author ***@***.***>
Subject: Re: [jasonacox/tinytuya] Tinytua in lua (Discussion #702)
No, they'll only change if you re-pair the device using the app.
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Hi there! I work a lot with qsys for centralized integration and control of many devices and one thing they do not have a plugin for is controlling Tuya devices locally. The problem is their language of choice is lua. I figured out how to write a lua script to use their cloud integration for a single customer to control one device through the cloud and realized that only works for a 1 month trial.
I have the lua code to do the authentication and getting data about the device including local keys and I have the ability to use tcp sockets but I am having trouble deciphering what I need to just make a single request to set switch_1 to true.
Would it be possible to get help with writing this in lua or possibly a way to port the python library to lua?
Qsys is a world class integration system so I do think it would be a good thing to have Tuya control in it.
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