View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0009828 | Taler | exchange | public | 2025-04-30 21:34 | 2025-04-30 22:18 |
| Reporter | oec | Assigned To | |||
| Priority | high | Severity | feature | Reproducibility | always |
| Status | confirmed | Resolution | open | ||
| Product Version | git (master) | ||||
| Target Version | 1.0 stretch goals | ||||
| Summary | 0009828: Redesign recoup to accomodate for changes in withdraw and refresh API's | ||||
| Description | With the latest changes to the withdraw and refresh protocols, an individual delivered/signed coin can not be identified within the withdraw or refresh tables - we only store the hash over all blinded planchets coming in and the hashes of those being signed. Therefore, right now the protocols for recoup for withdraw and refresh do not provide the necessary parameters in order to be able to perform _all_ of the following checks: 1) identify the right withdraw or refresh operation 2) ensure that the recouped coin was part of that operation 3) verify that the recoup request is signed by the recouped coin. 1) and 3) can already be done, but 2) is missing. | ||||
| Tags | compliance | ||||
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In particular, in the RecoupRequest object the exchange will need the array of all n blinded hashes of all coins that were signed during the corresponding request to withdraw or refresh. From this array, it can calculate the hash over all of them, allowing 1) and 2). The signature of the recouped coin over the request gives 3). |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2025-04-30 21:34 | oec | New Issue | |
| 2025-04-30 21:38 | oec | Note Added: 0024734 | |
| 2025-04-30 22:15 | Christian Grothoff | Priority | normal => high |
| 2025-04-30 22:15 | Christian Grothoff | Status | new => confirmed |
| 2025-04-30 22:16 | Christian Grothoff | Relationship added | child of 0008943 |
| 2025-04-30 22:16 | Christian Grothoff | Target Version | post-1.0 => 1.0 stretch goals |
| 2025-04-30 22:16 | Christian Grothoff | Relationship added | related to 0007868 |
| 2025-04-30 22:18 | Christian Grothoff | Tag Attached: compliance |
