Abstract： AS 2805.6.7:2011 pdf download.Electronic funds transfer—Requirements for interfaces Part 6.7: Key management— Transaction keys-Derived unique key per transaction (DUKPT). 4.l7 Niessage authentication code (MAC) A code appended to or inc...

AS 2805.6.7:2011 pdf download.Electronic funds transfer—Requirements for interfaces Part 6.7: Key management— Transaction

keys-Derived unique key per transaction (DUKPT).

4.l7 Niessage authentication code (MAC)

A code appended to or included with a message for the purpose of verifying the origin of the message and for verifying that the message content has not been changed.

NOTE: The procedure for generating a MAC is specified in AS 2805.4.1 and AS 2805.4.2.

4.18 Modulo 2 addition

A mathematical operation equivalent to binary addition without carry.

NOTE: Modulo 2 addition’ is represented by the symbol e and is sometimes referred to as an ‘exclusive OR’ operation.

4.19 Non reversible transformation

A method of generating new data (or keys) from old data (or keys) in such a way as to ensure that there is no feasible technique

for determining the old data (or keys) given a knowledge of the process and the results.

4.20 One sav function (OWF)

A cryptographic function that is not reversible.

NOTE: Even if the output and some ot the input variables arc known, it is not possible to reconstruct the entire input. Suitable

one way functions are described in AS 2805.5.4.

4.21 Personal identification number (PIN)

A numeric or alphanumeric code or password made up of between 4 and 1 2 characters that the cardholder knows for the purpose of

identification.

4.22 PIN block

A 64-bit value known as the formatted clear text PIN block and constructed in accordance with the requirements specified in AS 280.5.3.1 and AS 2805.3.2.

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