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what are the locations to store symmetric keys on the embedded controller without HSM or certs involvement?

Çağlar Arlı      -    10 Views

what are the locations to store symmetric keys on the embedded controller without HSM or certs involvement?

I am trying to find the locations on the embedded devices with micros that don't support HSM/SHE. What are the ideas/suggestions for storing the symmetric keys? I found solutions that suggest using public/private keys to encrypt this symmetric key but the micros are not capable of doing this.