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the packet that includes a counter and a message authentication code (MAC). The key used to generate MAC is
CSRK. Each peer device in a piconet will have a unique CSRK.
The receiving device will authenticate the message from the trusted sending device using the CSRK exchanged
from the sending device. The counter is initialized to zero when the CSRK is generated and is incremented with
each message signed with a given CSRK. The combination of the CSRK and counter mitigates replay attacks.
A.2.8 Table of Acronyms
CSRK Connection Signature Resolving Key
EDIV Encrypted Diversifier
IO Input and output
IRK Identity Resolving Key
LTK Long Term Key
Mconfirm 128-bit confirm value from initiator
MIC Message Integrity Check
MITM Man-in-the-middle
Mrand 128-bit random number used to generate Mconfirm
OOB Out of Band
RAND Random Number
Sconfirm 128-bit confirmation value from the responder
SK Session key
SMP Security Manager Protocol
Srand 128-bit random number used to generate Sconfirm
SSP Secure Simple Pairing
STK Short Term Key
TK Temporary Key
Author: John Trinkle
Publish Date:21 May 2014
TELEDYNE LECROY Appendicies
227 Frontline BPA low energy Hardware & Software User Manual