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How to Get LTK (Long Term Key)

Jetson
Associate II

I am currently considering capturing and analyzing LE-Audio packets, but for that I need the LTK used for decryption.BLE Secure Connection pairing does not directly exchange LTK, so I do not know what it is, and I am having trouble.

Could you please tell me how to output an LTK log by modifying the user source code?

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[Srouce]

https://github.com/STMicroelectronics/STM32CubeWBA.git

[Project]

Projects\STM32WBA55G-DK1\Applications\BLE\BLE_Audio_TMAP_Peripheral

Projects\STM32WBA55G-DK1\Applications\BLE\BLE_Audio_TMAP_Central

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