Transparently using macaroons with caveats to delegate authorization for access
US11595215B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2020 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Dec 17, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/102
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The disclosed technology teaches confirming delegation of authorization from an authorization server (AS) by a client to a service, including an AS issuing an OAuth2 access token in the form of a Macaroon (MAT), optionally with caveats, including a root signature, and providing the MAT to a client. Included is the client modifying the OA2 access token by appending caveats that narrow authorization, and by applying a message authentication code (MAC) chaining algorithm to generate an updated signature to include in the resulting MAT with caveats (MATwC), the client delegating authorization to a service by forwarding the MATwC to the service and the service using the MATwC to access a resource server (RS), the RS passing the MATwC to the AS, and the AS determining authenticity of the MATwC as a bearer token and evaluating scope of authorization from the MAT as narrowed by the caveats, and reporting results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.