About CWein.1

CWein.1 · 2022-11-09

I am trying to use MAC with my STSAFE-A110, in order to further restrict access.I would have expected a function similar to establishing a public key, i.e. StSafeA_PutPublicKeySlot(...), but I can only find StSafeA_PutAttribute.Are we really supposed...

CWein.1 · 2022-11-08

I am trying to use MAC with my STSAFE-A110, in order to further restrict access.I would have expected a function similar to establishing a public key, i.e. StSafeA_PutPublicKeySlot(...), but I can only find StSafeA_PutAttribute.StSafeA_ResponseCode_t...

CWein.1 · 2022-10-20

pd stsafe: Upload ECDSA Private Key pd stsafe: BusSend pd stsafe: 10 13 00 08 2a 86 48 ce 3d 03 01 07 04 00 20 01 pd stsafe: ef bc 56 8f ef 45 ef 23 ef 67 34 67 67 ef 01 00 pd stsafe: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 b8 pd stsafe: 72 ...

CWein.1 · 2022-12-13

Thank you very kindly for your patience in explaining.Finally I understand I cannot change it on the STSAFA110S8SPL02. It has already been set. After careful consideration, I have decided to not pursue HMAC in order to keep my supply chain simple. Th...

CWein.1 · 2022-12-12

Thank you for the many answers, Benjamin. Your help is the reason I can consider STSAFE.In your link, I see the following table, for STSAFA110S8SPL02:Generate Signature Command Code: 16 Command AC: Free Encryption of Command Data: (NO) Encryption of ...

CWein.1 · 2022-12-11

Thank you for the answer. Okay. Interesting. I would have expected that the devices from Mouser, DigiKey, etc, come "blank" and are fully customizable during client production.My goal is simply to require HMAC authorization (or some other authorizati...

CWein.1 · 2022-12-06

My goal is to simply restrict who can communicate with the STSAFE. I don't want bad actors to desolder the chip and use it to generate signatures.

CWein.1 · 2022-12-06

Thanks Benjamin. I was able to use the example and set the Host Key.It appears setting the Host Key does not do anything unless you also configure the STSAFE CMDs to actually require it? Is that right?#define STSAFEA_TAG_COMMAND_AUTHORIZATION_CONFIGU...

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Cannot figure out how to set the HMAC on the STSAFE-A110

Cannot figure out how to set the HMAC on the STSAFE-A110

I am trying to integrate the STSAFE-A110 into my product, but putting a key into STSAFEA_TAG_PRIVATE_KEY_SLOT always returns STSAFEA_INCONSISTENT_COMMAND_DATA

Re: Cannot figure out how to set the HMAC on the STSAFE-A110

Re: Cannot figure out how to set the HMAC on the STSAFE-A110

Re: Cannot figure out how to set the HMAC on the STSAFE-A110

Re: Cannot figure out how to set the HMAC on the STSAFE-A110

Re: Cannot figure out how to set the HMAC on the STSAFE-A110