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# Secure JTAG key management

Key management is an important consideration when configuring the secure JTAG mode. The response key can be:

- A unique key for all devices. Compromising this key would make all deployed devices subject to attack.
- A key per device.

- The keys and device identification, such as the serial number or MAC address, must be kept in a secure database.
- A secure algorithm can be used to generate a response key from the device identification such as the serial number or MAC address. In this case, compromising the algorithm would make all deployed devices vulnerable.

Note Key management implementation is customer-dependent.

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Secure JTAG key management updated on 22 January 2018 02:43:37 PM