TOTP - Secrets Engines | Vault | HashiCorp Developer
The TOTP secrets engine generates time-based credentials according to the TOTP standard. The secrets engine can also be used to generate a new key and validate passwords generated by that key. The TOTP secrets engine can act as both a generator (like Google Authenticator) and a provider (like the Google.com sign in service).
https://developer.hashicorp.com/vault/docs/secrets/totp
