CC2340R5: Password length for password authentication has to be 12 characters?

Shuyang Zhong

Part Number: CC2340R5
Other Parts Discussed in Thread: UNIFLASH

Tool/software:

I am trying to use CC2340's password authentication to protect my device. I followed the description in TRM and verified it with the default password in CCS/Uniflash, the default password is working fine:

Password ID: 0101020305080D15
Password hash: 6dd7e436ebf431df95ae15ee03ba8ee4c4c63fd8453f675e74d7c2012c9058e5
Password: Open Sesame!

I also tested another 12-character password and it also worked. However, if the length of the password is longer or shorter than 12 characters, the debugger is not able to access the device through CCS/Uniflash.

It seems the password length has to be 12 characters, but I did not find any description about the length in the TRM. Is this a real limitation? Is there a way to use a different length of password?

Best regards,

Shuyang

9 months ago

+1 Ryan Brown1 9 months ago

TI__Guru**** 223147 points

Hi Shuyang,

https://dev.ti.com/tirex/content/simplelink_lowpower_f3_sdk_9_12_00_19/docs/ble5stack/ble_user_guide/html/sysconfig/device-configuration-cc23xx.html#flash-configurations-for-debug-and-production

From Step 2.3: "Choose a password between 12 to 64 characters in multiples of four (i.e. 32-bit word length). Characters can be letters, numbers or special characters."

Can you confirm that you followed these steps as instructed?

Regards,
Ryan

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CC2340R5: Password length for password authentication has to be 12 characters?