EMV Tag Reference
Tools/EMV Tag Reference/9F49
Card (ICC)Format: bLength: var
9F49

Dynamic Data Authentication DOL (DDOL)

Tag ID
9F49
Format
b
Length (bytes)
var
Source
Card (ICC)

What it is

The Dynamic Data Authentication Data Object List (DDOLDynamic Data Object ListA card-supplied list of the data the terminal must send to the card for Dynamic Data Authentication.View in glossary →) names the data the terminal must send in the INTERNAL AUTHENTICATE command for DDADynamic Data AuthenticationOffline check where the card signs unique, per-transaction data with its own private key — proving the chip is genuine and not a clone.View in glossary → — in practice at least the Unpredictable Number (9F37). The card signs this challenge with its private key so the terminal can verify a fresh, card-specific signature.

Where it appears

Read from the card record files; consumed by the terminal to build INTERNAL AUTHENTICATE.

Specification reference

Defined in: EMV 4.x Book 3 (Application Specification), Annex A — Data Element Dictionary

Decode & build this tag

🔧PDOL / CDOL Builder🔓EMV TLV Decoder

Related tags

9F37Unpredictable Number9F4BSigned Dynamic Application Data9F46ICC Public Key Certificate
← Previous9F48 ICC Public Key RemainderNext →9F4A Static Data Authentication Tag List