cryptographic ignition key

A physical (usually electronic) token used to store, transport, and protect cryptographic keys and activation data. (Compare: dongle, fill device.)

Tutorial: A key-encrypting key could be divided (see: split key) between a CIK and a cryptographic module, so that it would be necessary to combine the two to regenerate the key, use it to decrypt other keys and data contained in the module, and thus activate the module.

"Device or electronic key used to unlock the secure mode of cryptographic equipment." [C4009] Usage: Abbreviated as "crypto- ignition key".