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aes2
aes2
Associate II
March 29, 2017
Solved

Security database management

  • March 29, 2017
  • 1 reply
  • 932 views
Posted on March 29, 2017 at 14:26

As i understand the programming manual section about bonding on BlueNrg-MS devices, encryption keys are stored in the security database in order to resolve addresses, and encrypt future data connections.

This all seems to work as expected, but it is unclear to me how to manage the security database over time, when a number of devices is expected to pair to the device during its lifetime

How many different

bonding

devices can the security database handle, and what is expected to happen when the database is filled up ? 

I am aware of the aci_gap_clear_security_database api, but as this clears all paired devices I would like to avoid calling this

unless needed.

\Anders

    This topic has been closed for replies.
    Best answer by Antonio Vilei
    Posted on March 30, 2017 at 10:45

    Hi Anders,

    with BlueNRG-MS, firmware version 7.2c, the maximum number of entries in the security database is 12.

    When it fills up, older entries get overwritten by the new ones.

    Unless you actually want to delete all entries, you don't need to call the aci_gap_clear_security_database API.

    Best regards,

    Antonio

    1 reply

    Antonio Vilei
    Antonio VileiAnswer
    ST Employee
    March 30, 2017
    Posted on March 30, 2017 at 10:45

    Hi Anders,

    with BlueNRG-MS, firmware version 7.2c, the maximum number of entries in the security database is 12.

    When it fills up, older entries get overwritten by the new ones.

    Unless you actually want to delete all entries, you don't need to call the aci_gap_clear_security_database API.

    Best regards,

    Antonio
    aes2
    aes2Author
    Associate II
    March 30, 2017
    Posted on March 30, 2017 at 11:06

    Hi Antonio

    Thank you for the answer, this was exactly the info i needed.

    Best regards 

    Anders

    jampino
    jampino
    Associate III
    November 8, 2017
    Posted on November 08, 2017 at 16:32

    Hello,

    Is it possible just to delete one desired address from that db?

    Thanks

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