After an ARQC the terminal asks the issuer (EMV Book 3 §10.9), proves the answer to the card (issuer authentication), and delivers any commands the issuer sends (issuer scripts, §10.10).
Online processing, issuer authentication and scripts
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The authorisation exchange, ARPC methods, EXTERNAL AUTHENTICATE and issuer scripts.
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The opening of the article
In the full article
- The authorisation exchange
- ARPC methods (EMV Book 2 §8.2)
- Issuer authentication
- Issuer scripts
- What laboratories and acquirers look for
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