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Re: [webauthn] FIDO Payment Support (#1570)

From: Anders Rundgren via GitHub <sysbot+gh@w3.org>
Date: Wed, 17 Feb 2021 09:50:51 +0000
To: public-webauthn@w3.org
Message-ID: <issue_comment.created-780436965-1613555450-sysbot+gh@w3.org>
Although security for the "backend" is not covered here, there are a few apparent things worth mentioning.
- The name "Super Shop" could be a lie.  The **Acquirer** should have the information needed to block such a transaction.
- The domain "supershop.com" can be provided by the **Acquirer** as a part of the augmented AREQ sent to the **Issuer**.  A mismatch should abort the transaction request.
- If the **Merchant** changes anything in its payment claim, it will be revealed by the **Issuer** due to the hashing arrangement. 

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