Transaction Authorization using Credential Presentations

[tlodderstedt]

In EUDI Wallet context, we frequently hear the requirement to authorize transactions (electronic signatures and payments) with the wallet. At OSW, a couple of us discussed the idea to make that an extension of a credential presentation. The basic idea is to send transaction data with the presentation request, eg the document to be signed, which causes the wallet to show this data to the user and gather consent. If the user consents, the data is added to the signed credential presentation.