openapi: 3.1.1
info:
  title: RequestDigest
  version: 2.0.0
  description: "Container schemas fetched from beckn.yaml. This cannot be extended as it is a reserved schema in beckn protocol. Any additional properties added to this schema can only be made using its *Attributes property"
  license:
    name: CC-BY-NC-SA 4.0 International
  contact:
    name: Beckn Labs
    url: https://beckn.io
components:
  schemas:
    RequestDigest:
      x-iri: https://schema.nfh.global/RequestDigest/v2.0
      title: Request Payload Digest
      description: 'A cryptographic binding that explicitly ties a callback to the

        specific inbound request that triggered it. Establishes bilateral non-repudiation

        for the asynchronous leg of a Beckn interaction.


        Use `lineage` (on `Context`) for cross-transaction causality.


        Verification steps:

        1. Recompute BLAKE2b-512 digest of the original request body; compare to `digest`.

        2. Confirm `messageId` matches the `messageId` from the original request `Context`.


        This schema is part of the Long Term Support of Beckn Protocol V2.0 API specification and MUST NOT be extended. Any domain-specific extension must use the property of this schema which is of type Attribute.'
      type: object
      required:
      - digest
      properties:
        digest:
          type: string
          pattern: ^BLAKE-512=[A-Za-z0-9+/]+=*$
          description: 'BLAKE2b-512 hash of the parent request body, Base64-encoded with algorithm prefix.

            Format: `BLAKE-512={base64EncodedHash}`'
      x-lts: true