credentials:
  user_password:
    description:  "Long-Term Credential password for clients"
    algorithm:    "alphanumeric_32"
    validation:   "^[A-Za-z0-9]{32}$"
  auth_secret:
    description:  "TURN-REST static auth secret"
    algorithm:    "sha1"
    validation:   "^[a-f0-9]{40}$"