Module 19 of 22 · Operator · 60 min
Beyond the terminal
ISO 8583, switches and acquirer hosts, HSMs, DUKPT key derivation, ISO 9564 PIN block formats and key ceremonies: the other half of the rail.
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Open the free workbench →What this module covers
- 01First, which boundary are you on?
- 02ISO 8583: the message that carries the money
- 03The bitmap
- 04The elements you will meet constantly
- 05Where the lengths come from
- 06Response codes, and which ones matter
- 07Entry mode: the downgrade, on the wire
- 08PINs, and the boxes they live in
- 09DUKPT: a key per transaction
- 10Key ceremonies
- 11FASTCash: attacking the switch, not the card
- 12ISO 20022, and why the migration is slow