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BTSSP: SM TK Value, SC Confirm Value and SC Random Value All Present

Question asked by zeelivermorium@gmail.com on Mar 19, 2020
Latest reply on Apr 1, 2020 by Estephania Martinez


As the picture suggests, the NDEF bluetooth carrier configuration record contains these 3 fiels: 

Security Manager TK Value, Secure Connection Confirmation Value and Secure Connnection Random Value. But TK value should be used in legacy pairing while the other two are used in secure pairing and you cannot use 2 pairing at once. Does anyone know why all three fields are included all at once? Shouldn't just choose what to inbcluded accordingly? Even the LE Example NDEF data has all three fields present in the payload.

 

Thanks for your time and help in advance! 

 

Best,

Zee

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