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Bluetooth

Long-Term Key [LTK]

For BLE: a persistent key that is stored in both devices and used to derive a fresh encryption key each time the devices use encryption.

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Host Controller Interface [HCI]

An interface that enables a controller to communicate with a driver.

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Enhanced Data Rate [EDR]

“One of the signaling modes introduced in version 2.0 of the Bluetooth protocol, supporting 3 Mbit/s signaling rate.”

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Encrypted Diversifier [EDIV]

“(Bluetooth) A value used along with a random number during the process of creating and identifying a long-term key.”

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Direct Test Mode [DTM]

A mode used for RF testing used while manufacturing and for certifying BLE devices.

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Connection Signature Resolving Key [CRSK]

“In Bluetooth, CRSK is a security key used to sign transmitted data and to verify signatures on received data.”

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