FIDO Commands

On Windows, FIDO operations are privileged. Therefore you must run Command Prompt or PowerShell as administrator in order to be able to run commands that begin with ykman fido.

Acronyms and their definitions are listed at the bottom of the Base Commands page.

ykman fido [OPTIONS] COMMAND [ARGS]…

Manage FIDO applications.

Examples

Reset the FIDO (FIDO2 and U2F) applications:
```
$ ykman fido reset
```

Change the FIDO2 PIN from 123456 to 654321:

$ ykman fido access change-pin --pin 123456 --new-pin 654321

Options

Option	Description
`-h, --help`	Show this message and exit.

Commands

Command	Description
`access`	Manage the PIN for FIDO.
`config`	Manage FIDO configuration.
`credentials`	Manage discoverable (resident) credentials.
`fingerprints`	Manage fingerprints.
`info`	Display status of FIDO2 application.
`reset`	Reset all FIDO applications.

ykman fido access [OPTIONS] COMMAND [ARGS]…

Manage the PIN for FIDO.

Options

Option	Description
`-h, --help`	Show this message and exit.

Commands

Command	Description
`change-pin`	Set or change the PIN code.
`force-change`	Force the PIN to be changed to a new value before use. Command introduced in ykman (CLI) version 5.3.0.
`set-min-length`	Set the minimum length allowed for PIN. Command introduced in ykman (CLI) version 5.3.0.
`verify-pin`	Verify the FIDO PIN against a YubiKey.

ykman fido access change-pin [OPTIONS]

Set or change the PIN code.

The FIDO2 PIN must be at least 4 characters, and supports any type of alphanumeric characters. Some YubiKeys can be configured to require a longer PIN.

On YubiKey FIPS (4 Series), a PIN can be set for FIDO U2F. That PIN must be at least 6 characters.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-n, --new-pin TEXT`	A new PIN.
`-P, --pin TEXT`	Current PIN code.
`-u, --u2f`	Set FIDO U2F PIN instead of FIDO2 PIN. Applies to YubiKey FIPS only.

ykman fido access force-change [OPTIONS]

Force the PIN to be changed to a new value before use.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-P, --pin TEXT`	PIN code.

ykman fido access set-min-length [OPTIONS] LENGTH

Set the minimum length allowed for the PIN.

Use the --rp option to specify which Relying Part (RPs) are allowed to request this information.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-P, --pin TEXT`	PIN code.
`-R, --rp-id TEXT`	RP ID to allow.

ykman fido access unlock [OPTIONS] (Deprecated)

Yubico replaced the ``unlock`` command with the ``verify-pin`` command.

Verify U2F PIN for YubiKey FIPS. Unlock the YubiKey FIPS and allow U2F registration.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-P, --pin TEXT`	Current PIN code.

ykman fido access verify-pin [OPTIONS]

Verify the FIDO PIN against a YubiKey. For YubiKeys supporting FIDO2 this resets the retries counter of the PIN. For YubiKey FIPS (4 Series) this unlocks the session, allowing U2F registration.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-P, --pin TEXT`	Current PIN code.

ykman fido config [OPTIONS] COMMAND [ARGS]…

Manage FIDO configuration.

Options

Option	Description
`-h, --help`	Show this message and exit.

Commands

Command	Description
`enable-ep-attestation`	Enables Enterprise Attestation for Authenticators pre-configured to support it. Command introduced in ykman (CLI) v5.3.0.
`toggle-always-uv`	Toggles the state of Always Require User Verification. Command introduced in ykman (CLI) v5.3.0.

ykman fido config enable-ep-attestation [OPTIONS]

Enables Enterprise Attestation for Authenticators pre-configured to support it.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-P, --pin TEXT`	PIN code.

ykman fido config toggle-always-uv [OPTIONS]

Toggles the state of Always Require User Verification.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-P, --pin TEXT`	PIN code.

ykman fido credentials [OPTIONS] COMMAND [ARGS]…

Manage discoverable (resident) credentials. This command lets you manage credentials stored on your YubiKey. Credential management is only available when a FIDO PIN is set on the YubiKey.

Note

Managing credentials requires having a PIN. Set a PIN before trying to manage credentials.

Examples

List stored credentials (providing PIN via argument):
```
$ ykman fido credentials list --pin 123456
```
Delete a credential by user name (PIN is prompted for):
```
$ ykman fido credentials delete example_user
```

Options

Option	Description
`-h, --help`	Show this message and exit.

Commands

Command	Description
`delete`	Delete a resident credential.
`list`	List resident credentials.

ykman fido credentials delete [OPTIONS] CREDENTIAL_ID

Delete a credential. List stored credential IDs using the list subcommand.

Arguments

Argument	Description
`CREDENTIAL_ID`	A unique substring match of a Credential ID.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-f, --force`	Confirm deletion without prompting.
`-P, --pin TEXT`	PIN code.

ykman fido credentials list [OPTIONS]

List credentials. Shows a list of credentials stored on the YubiKey.

The --csv flag returns more complete information about each credential, in CSV (comma separated values) format.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-c, --csv`	Returns full credential information in CSV format.
`-P, --pin TEXT`	PIN code.

ykman fido fingerprints [OPTIONS] COMMAND [ARGS]…

Manage fingerprints. Requires a YubiKey with fingerprint sensor. Fingerprint management is available only when a FIDO PIN is set on the YubiKey.

Examples

Register a new fingerprint (providing PIN via argument):

$ ykman fido fingerprints add "Left thumb" --pin 123456

List already stored fingerprints (providing PIN via argument):
```
$ ykman fido fingerprints list --pin 123456
```
Delete a stored fingerprint with ID “f691” (PIN is prompted for):
```
$ ykman fido fingerprints delete f691
```

Options

Option	Description
`-h, --help`	Show this message and exit.

Commands

Command	Description
`add`	Add a new fingerprint.
`delete`	Delete a fingerprint.
`list`	List registered fingerprint.
`rename`	Set the label for a fingerprint.

ykman fido fingerprints add [OPTIONS] NAME

Add a new fingerprint.

Arguments

Argument	Description
`NAME`	Short readable name for the fingerprint. For example, “Left thumb”.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-P, --pin TEXT`	PIN code.

ykman fido fingerprints delete [OPTIONS] ID

Delete a fingerprint. Delete a fingerprint from the YubiKey by its ID. To view the YuibiKey ID, run the ykman fido fingerprints list command.

Arguments

Argument	Description
`ID`	To see the ID run the `fingerprints list` subcommand.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-f, --force`	Confirm deletion without prompting.
`-P, --pin TEXT`	PIN code.

ykman fido fingerprints list [OPTIONS]

List registered fingerprint. Lists fingerprints by ID and (if available) label.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-P, --pin TEXT`	PIN code.

ykman fido fingerprints rename [OPTIONS] ID NAME

Set the label for a fingerprint.

Arguments

Argument	Description
`ID`	The ID of the fingerprint to rename. See `fingerprints list`.
`NAME`	Short readable name for the fingerprint. For example, “Left thumb”.

Options:

Option	Description
`-h, --help`	Show this message and exit.
`-P, --pin TEXT`	PIN code.

ykman fido info

Display general status of the FIDO2 application.

Options

Option	Description
`-h, --help`	Show this message and exit.

ykman fido reset [OPTIONS]

Reset all FIDO applications. This action wipes all FIDO credentials on the YubiKey, including FIDO U2F credentials, and removes the PIN code. The reset is triggered immediately after the YubiKey is inserted, and it requires that the YubiKey be touched.

Options

Option	Description
`-h, --help`	Show this message and exit.
`-f, --force`	Confirm the action without prompting.

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