Update in July 2026: The site has been significantly updated to replace outdated packages. Functionality should be unchanged, but if you notice any regressions, please email contact@emvlab.org.
| Name | Description | Source | Format | Template | Tag | Length | P/C |
|---|---|---|---|---|---|---|---|
| Proprietary Authentication Data | Contains issuer data for transmission to the card in the Issuer Authentication Data of an online transaction. For a cryptogram defined by the Common Core Definitions with a Cryptogram Version of '4', the Proprietary Authentication Data element shall be 0 bytes long. The only Cryptogram Version currently defined for the Common Core Definitions is '4'. | Issuer | b | — | 0–8 | — |
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