u2f

type Device struct {
	//  Priv is yours to do what you please with
	Priv      interface{}
	KeyHandle string
	PubKey    string
	Cert      string
	Challenge string
	Counter   uint32
}

type RegisterRequest struct {
	Version   string `json:"version"`
	Challenge string `json:"challenge"`
	AppID     string `json:"appId"`
}

type RegisterResponse struct {
	ClientData       string `json:"clientData"`
	RegistrationData string `json:"registrationData"`
}

type Server struct {
	Users   UserDB
	AppID   string
	Version string
}

type SignFinResult struct {
	Touch byte `json:"touch"`
	// Counter current counter value
	Counter uint32 `json:"counter"`
}

type SignRequest struct {
	Version   string `json:"version"`
	Challenge string `json:"challenge"`
	KeyHandle string `json:"keyHandle"`
	AppID     string `json:"appId"`
}

type SignResponse struct {
	KeyHandle     string `json:"keyHandle"`
	ClientData    string `json:"clientData"`
	SignatureData string `json:"signatureData"`
}

type User struct {
	// Priv is yours to do what you please with.
	// For example, if you have an sql backend you could store the tuple or
	// primary key here to make updating easier.
	Priv interface{}

	// User contains the username
	User string

	// Enrolled holds if they have signed up
	Enrolled bool

	// A list of associated U2F devices with for this User
	Devices []Device
}

type UserDB interface {
	// GetUser from a username. It is assumed you have done any needed
	// password authentication before this point
	GetUser(user string) (User, error)

	// PutUser Update the user
	PutUser(u User) error
}