Vault Encryption, Audit Logging & Compliance for TaskFlow
Use Vault's Transit engine for encryption-as-a-service, rotate and rewrap ciphertext without exposing keys, enable HMAC-protected audit logging, and apply PCI-DSS-aligned backup and retention controls for the TaskFlow platform.
Lab Overview
🛠 Lab from the Platform Engineering Bootcamp. Used in Week 18. Bootcamp landing page: https://academy.tekanaid.com/bootcamps/platform-engineering-bootcamp Parent course(s):
- Week 18: Secrets Management with HashiCorp Vault (slug: secrets-management-vault)
This lab deploys the real TaskFlow backend (the same FastAPI app you have been building since Week 1) and protects its live API responses with Vault, so it is a genuine part of the running TaskFlow project that grows across all 21 weeks of the bootcamp.
Protect the real TaskFlow backend's data with Vault's Transit secrets engine (encryption-as-a-service), where applications send plaintext and receive ciphertext without ever handling key material. You will fetch live responses from the running TaskFlow API and encrypt them, rotate keys and rewrap ciphertext to the latest version, use data keys for envelope encryption of the backend's OpenAPI document, enable an HMAC-protected file audit device that captures the real Transit operations, and implement compliance controls for audit retention and a restorable data backup on dev-mode Vault.
What You'll Learn
Fetch a live response from the real running TaskFlow backend and encrypt/decrypt it with the Transit engine, recognizing that Transit is for reversible encryption, never for passwords (which must be one-way hashed)
Rotate a Transit key to create a new version, confirm the encrypted backend response still decrypts, and use transit/rewrap to upgrade ciphertext without exposing plaintext
Configure min_decryption_version to retire old key versions
Generate a Transit data key and envelope-encrypt the TaskFlow backend's OpenAPI document, plus use convergent/derived encryption on a real backend field for deterministic, searchable ciphertext
Enable a file audit device and verify that the real Transit operations on the TaskFlow key are captured with sensitive values stored as HMAC-SHA256 hashes rather than plaintext
Implement audit-log retention expectations (PCI-DSS) and create a restorable backup of the TaskFlow Vault data, distinguishing in-memory dev mode export from production raft snapshots
Technologies Covered
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