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bns · 2024-10-22

Hi folks,I am trying to use the hardware-AES of the STM32WLE5JC, but I get weird results that do not match the expected values. I am comparing my STM-implementation against RadioLib's Crypto which is based on tiny-AES-c and AES-CMAC. RadioLib's imple...

bns · 2024-10-15

Hi folks,I recently started my STM32 journey using a STM32WLE5JCxx (the LoRa-E5). After fighting with the SubGHz for a while, I managed to write a decent application, but I'm not completely familiar with all of the essentials yet.Currently, I am usin...

bns · 2024-11-01

In the end I have to apply a bit of a weird hack: instead of simply encrypting a buffer, I have to encrypt an empty 128-bit block first: uint8_t a[1]; uint8_t b[16]; this->encryptECB_HW(a, 1, b); this->encryptECB_HW(in, len, out);Where this...

bns · 2024-10-29

Thank you very much - as AES is not defined for block sizes other than multiples of 16, I had worked under the assumption that it would be implicitly handled. That was clearly wrong so I now added the padding. This works well: 13:08:33.389 > RLB_PRO:...

bns · 2024-10-28

Is there someone who can give some input on this, please? :)

bns · 2024-10-16

Correction: 16ms on 60m is 4.5ppm, not 44.5ppm so this definitely ticks all the boxes as I hoped for <10ppm. Yay :)

bns · 2024-10-15

Together with a document I received from a colleague, I managed to get the TCXO going!Drift is pretty much gone now: I only got 16ms drift over the course of 3600s. 18:57:14.177 > 0 18:58:54.176 > 1 19:00:34.176 > 2 19:02:14.176 > 3 19:03:54.175 > 4 ...

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Unexpected results for AES (ECB mode)

HAL_Delay() inaccuracy

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Re: Unexpected results for AES (ECB mode)

Re: Unexpected results for AES (ECB mode)

Re: HAL_Delay() inaccuracy

Re: HAL_Delay() inaccuracy