AS 2805.6.5.3:2020 PDF

This Standard defines the interface and method to initialize remotely a terminal cryptographic unit (TCU).In the context of this Standard, the term “initialization” refers only to the initial set up of a symmetric cryptographic keying relationship between the TCU and the acquirer(s).

This Standard defines the technique by which TCUs can be remotely initialized. Initialization is limited to cryptographic initialization of the first symmetric key of the key management scheme used between the TCU and each acquirer.

This Standard minimizes the probability of initialization of TCUs unknown to the sponsor.