Azure Service Bus

Overview#

The Azure Service Bus connector proxies REST API calls for queues and topics. SAS connection strings are sealed in QuantaVault and used for HMAC-based authentication on each request.

Prerequisites#

• 1An Azure Service Bus namespace (Standard or Premium tier)
• 2A Shared Access Policy connection string with Send + Listen permissions
• 3A QuantaSeal API key

Configuration#

Follow these steps to connect Azure Service Bus to QuantaSeal. You can configure integrations via the Admin Console or directly via the API.

1. 1

   In Azure Portal, create a Shared Access Policy on your Service Bus namespace with Send + Listen.

2. 2

   Copy the primary connection string.

3. 3

   Seal: POST /api/v2/vault/seal with credential_type: custom_kv and values: {connection_string: '...'}.

4. 4

   Create integration with system_type: azure_service_bus and config: {queue_name or topic_name}.

Authentication Types#

Seal the Service Bus connection string as custom_kv with key 'connection_string'. QuantaSeal derives the SAS token per-request.

All credential types are sealed in QuantaVault with ML-KEM-768 + AES-256-GCM and wrapped by your tenant AWS KMS CMK before storage. See the Vault API reference for the full list of credential types and seal/unseal endpoints.

Available Operations#

QuantaSeal enforces a default-deny operation policy. Only operations listed in your integration's allowed_operations array will be permitted. Add operations when creating or updating the integration.

Code Example#

Every proxy call returns a HybridCryptoEnvelope - the response is ML-KEM-768 key-encapsulated, AES-256-GCM encrypted, and signed with ML-DSA-65 + HMAC-SHA-512. Verify both signatures before trusting the decrypted payload.

curl -X POST https://api.quantaseal.io/api/v2/proxy/outbound \
  -H "X-API-Key: qs_live_your_key_here" \
  -H "Content-Type: application/json" \
  -d '{"integration_id":"int_ASB001","operation":"send_message","payload":{"body":"Order confirmed","label":"order.confirmed"}}'

Troubleshooting#