Credentials

Camera credentials are stored in the EdgeX Secret Store and referenced by MAC Address. All devices by default are configured with credentials from DefaultSecretName unless configured as part of a group within AppCustom.CredentialsMap.

Three things must be done in order to add an authenticated camera to EdgeX: - Add device to EdgeX - Manually or via auto-discovery - Add Credentials to Secret Store - Manually or via utility scripts - Map Credentials to devices - Manually or via utility scripts - Configure as DefaultSecretName

Terminology / Definitions

• Secret: A generic map/object which is stored as multiple key/value pairs in the Secret Store under a specific Secret Name key.
• Credentials: A specific type of Secret which contains a mapping of username, password, and authentication mode.
• Secret Store: The place EdgeX stores all Secrets
• In secure mode this is Vault
• In non-secure mode this is the configuration provider (typically Consul). They can be pre-configured via configuration.yaml's Writable.InsecureSecrets section.
• Secret Name: The name/key of the Secret as they are stored in the Secret Store.
• CredentialsMap: (aka AppCustom.CredentialsMap) this contains the mappings between Secret Name and MAC Address. Each key in the map is a Secret Name which points to Credentials in the Secret Store. The value for each key is a comma separated list of MAC Addresses which should use those Credentials.
• DefaultSecretName: The Secret Name which points to the Credentials to use as the default for all devices which are not configured in the CredentialsMap.
• NoAuth: A special Secret Name that does not exist in the Secret Store. It is pre-configured as Credentials with Authentication Mode of none. NoAuth can be used most places where a Secret Name is expected.

Camera credentials are stored in the EdgeX Secret Store, which is Vault in secure mode, and Consul in non-secure mode. The term Secret Name is often used to refer to the name of the credentials as they are stored in the Secret Store. Credentials are then mapped to devices either using the DefaultSecretName which applies to all devices by default, or by configuring the AppCustom.CredentialsMap which maps one or more MAC Addresses to the desired credentials.

Credentials Structure

Credentials are SecretData comprised of three fields: - username: the admin username for the camera - password: the admin password - mode: the type of Authentication to use - usernametoken: use a username and token based authentication - digest: use a digest based authentication - both: use both usernametoken and digest - none: do not send any authentication headers

Add Credentials to Secret Store

Non-Secure Mode

curl -X PUT --data "<secret-name>" \
    "http://localhost:8500/v1/kv/edgex/v3/device-onvif-camera/Writable/InsecureSecrets/<secret-name>/SecretName"

curl -X PUT --data "<username>" \
    "http://localhost:8500/v1/kv/edgex/v3/device-onvif-camera/Writable/InsecureSecrets/<secret-name>/SecretData/username"

curl -X PUT --data "<password>" \
    "http://localhost:8500/v1/kv/edgex/v3/device-onvif-camera/Writable/InsecureSecrets/<secret-name>/SecretData/password"

curl -X PUT --data "<auth-mode>" \
    "http://localhost:8500/v1/kv/edgex/v3/device-onvif-camera/Writable/InsecureSecrets/<secret-name>/SecretData/mode"

Secure Mode

curl --location --request POST 'http://localhost:59984/api/v3/secret' \
    --header 'Content-Type: application/json' \
    --data-raw '
{
    "apiVersion" : "v3",
    "name": "<secret-name>",
    "secretData":[
        {
            "key":"username",
            "value":"<username>"
        },
        {
            "key":"password",
            "value":"<password>"
        },
        {
            "key":"mode",
            "value":"<mode>"
        }
    ]
}'

Mapping Credentials to Devices

The device service supports three types of credential mapping. All three types can be used in conjunction with each other.

• 1 to All - All devices are given the default credentials based on DefaultSecretName
• 1 to Many - In the CredentialsMap, one secret name can be assigned multiple MAC addresses
• 1 to 1 - In the CredentialsMap, assign each secret name 1 MAC Address

Manual Configuration

# AppCustom.CredentialsMap is a map of SecretName -> Comma separated list of mac addresses.
  # Every SecretName used here must also exist as a valid secret in the Secret Store.
  #
  # Note: Anything not defined here will be assigned the default credentials configured via `DefaultSecretName`.
  #
  # Example: (Single mapping for 1 mac address to 1 credential)
  #   credentials001 = "aa:bb:cc:dd:ee:ff"
  #
  # Example: (Multi mapping for 3 mac address to 1 shared credentials)
  #   credentials002 = "11:22:33:44:55:66,ff:ee:dd:cc:bb:aa,ab:12:12:34:34:56:56"
  #
  # These mappings can also be referred to as "groups". In the above case, the `credentials001` group has 1 MAC
  # Address, and the `credentials002` group has 3 MAC Addresses.
  #
  # The special group 'NoAuth' defines mac addresses of cameras where no authentication is needed.
  # The 'NoAuth' key does not exist in the SecretStore. It is not required to add MAC Addresses in here,
  # however it avoids sending the default credentials to cameras which do not need it.
  #
  # IMPORTANT: A MAC Address may only exist in one credential group. If a MAC address is defined in more
  # than one group, it is unpredictable which group the MAC will end up in! If you wish to change the group a MAC
  # address belongs to, first remove it from its existing group, and then add it to the new one.
  CredentialsMap:
    NoAuth: ""
    credentials001: "aa:bb:cc:dd:ee:ff"
    credentials002: "11:22:33:44:55:66,ff:ee:dd:cc:bb:aa,ab:12:12:34:34:56:56"

Credential Lookup

Here is an in-depth look at the logic behind mapping Credentials to Devices.

During Discovery

Connecting to Existing Devices