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"PVKI"

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Diagram explaining PVKI and PVV calculation in card PIN verification

Credit Card

What Is PVKI (PIN Verification Key Index)?

PVKI is the abbreviation for PIN Verification Key Index. It is located within the card's Track 1 and Track 2 data and is used in PVV calculation. It can take values from 1 to 6, usually defaulting to 1.

Payment card illustrating magnetic stripe data used for PIN verification

Credit Card

What is PVV (PIN Verification Value)?

PVV is the number encoded on a card's magnetic stripe that allows the cardholder's PIN to be verified by ATMs and POS terminals. It is a 4-digit cryptogram calculated through a cryptographic operation using the PIN and card data. The real result is longer than 4 digits.

Diagram illustrating the structure of Track2 data on a card's magnetic stripe

Credit Card

What Is Track2?

A special data set printed on a card's magnetic stripe, containing the card information required for authorization when the card is used physically. It consists of 40 numeric characters. The Track2 field structure includes several data fields such as length and description.

Diagram illustrating the Track 1 data structure and field layout on a magnetic stripe card

Credit Card

What is Track 1?

Track 1 is a special data set encoded on a card's magnetic stripe that contains the card information required for authorization when the card is used physically. It includes the cardholder name, card number, and expiration date.

Illustration representing the PIN Verification Key (PVK) concept in HSM security

Credit Card

What is PVK (Pin Verification Key)?

PVK (Pin Verification Key) is a key held on the HSM, used in PIN generation and verification, and therefore to confirm that a PIN is correct. On a shared network it is encrypted under TMK or ZMK; on a local network it is encrypted under one of the LMK pairs.