Glossary

Acronym	Description
PIN PAD/PED	PIN Entry Device
ATR	Answer to reset
CDE	Common Data Environment
CNP	Card not Present
CP	Card present i.e. the card is processed via the PED
EFEK	Encrypted File Encryption key
EKEK	Encrypted Key Encryption key
EMV	Europay, Mastercard and Visa
EPOS	Electronic Point of Sale
EVT	EasyVTerminal – The name of the YESpay/Worldpay EFT application before it was relaunched as IPC
FEK	File Encryption Key
IEEE	Institute of Electrical and Electronics Engineers
iKEK	Initial Key Encryption Key
IPC	Integrated Payment Client – Worldpay’s EFT application.
KEK	Key Encryption Key
MSR	Magnetic Stripe Reader
OS	Operating System
PA-DSS	Payment Application Data Security Standard
PAN	Primary Account Number
PCI DSS	Payment card Industry Data Security Standard
PIN	Personal Identification Number
POS	Point of Sale
sFTP	Secure File Transfer Protocol
SNMP	Simple Network Management Protocol
SSL	Secure Socket Layer
TLS	Transport Layer Security
WPH	Worldpay’s Payment Hub
YESEFT	Worldpay’s EFT Kernel