Implement Fabric CA enrollment logic in the backend through Fabric-auth-brigde - (The Backend Bridge)

[imos64]

As a
Developer or Admin managing blockchain-based applications,

I want to
securely authenticate users using Keycloak and automatically register and enroll them with Hyperledger Fabric CA through the Backend Bridge,

So that
they can receive a valid Fabric identity and interact with the blockchain network without manual provisioning.

Acceptance Criteria

✅ JWT Token Validation

• Given a user logs in through Keycloak and receives a JWT token,
• When the frontend sends the token to the Backend Bridge,
• Then the Bridge must validate the token against Keycloak's JWKS endpoint.

✅ Check Fabric Wallet

• When a valid user token is received,
• Then the Bridge should check if the corresponding Fabric identity exists in the Fabric Wallet.

✅ Register and Enroll with Fabric CA

• If the identity does not exist,
• Then the Bridge should register the user with Fabric CA and enroll them to receive a signed certificate.

✅ Store Identity Securely

• The enrolled identity should be securely stored in the Fabric Wallet for future blockchain interactions.

✅ Return Success Response

• The Backend Bridge should return a success status and identity reference if the flow completes correctly.

[imos64]

@imos64 Started working on this story.

Ok @AnjaliK-123 go ahead

[AnjaliK-123]

Tentatvie timelines:
JWT Token Validation : Keycloak integration - 07/12/25
Check Fabric Wallet - 07/19/25
Register and Enroll with Fabric CA - 07/26/25
Store Identity Securely - 08/02/25
Return Success Response - 08/02/25