io.vertx.ext.web.handler

## Interface OtpAuthHandler

- All Superinterfaces:
    AuthenticationHandler, Handler<RoutingContext>

      public interface OtpAuthHandler
      extends AuthenticationHandler

  An auth handler that provides One Time Password (Multi-Factor) Authentication support.
  Author:
    Paulo Lopes

- - ### Method Summary

    All Methods Static Methods Instance Methods Abstract Methods Default Methods
    Modifier and Type | Method and Description
    --- | ---
    `static OtpAuthHandler` | `create(HotpAuth hotpAuth)` Create a new instance of this handler using a hash based one time password authentication provider.
    `static OtpAuthHandler` | `create(TotpAuth totpAuth)` Create a new instance of this handler using a time based one time password authentication provider.
    `OtpAuthHandler` | `issuer(String issuer)` Configure the `issuer` value to be shown in the authenticator URL.
    `OtpAuthHandler` | `label(String label)` Configure the `label` value to be shown in the authenticator URL.
    `OtpAuthHandler` | `setupCallback(Route route)` Setup the required route where authenticators to submit the challenge response.
    `OtpAuthHandler` | `setupRegisterCallback(Route route)` Setup the optional route where authenticators are allowed to register.
    `OtpAuthHandler` | `verifyUrl(String url)` Specify the URL where requests are to be redirected when a user is already known in the request.

    - ### Methods inherited from interface io.vertx.core.Handler

      `handle`

- - ### Method Detail

    - #### create

          static OtpAuthHandler create(TotpAuth totpAuth)

      Create a new instance of this handler using a time based one time password authentication provider.
      Parameters:
        `totpAuth` - the time based OTP provider.
      Returns:
        new instance of the handler.

    - #### create

          static OtpAuthHandler create(HotpAuth hotpAuth)

      Create a new instance of this handler using a hash based one time password authentication provider.
      Parameters:
        `hotpAuth` - the hash based OTP provider.
      Returns:
        new instance of the handler.

    - #### verifyUrl

          OtpAuthHandler verifyUrl(String url)

      Specify the URL where requests are to be redirected when a user is already known in the request. A user is already known when the `RoutingContext.user()` is not `null`. If no redirect is provided, requests are terminated immediately with status code `401`.
      Parameters:
        `url` - the location where users are to be asked for the OTP code.
      Returns:
        fluent self.

    - #### setupRegisterCallback

          OtpAuthHandler setupRegisterCallback(Route route)

      Setup the optional route where authenticators are allowed to register. Registration is only allowed on requests with a valid user. A user is valid when the `RoutingContext.user()` is not `null`.
      Parameters:
        `route` - the location where users are to register new authenticator devices/apps.
      Returns:
        fluent self.

    - #### setupCallback

          OtpAuthHandler setupCallback(Route route)

      Setup the required route where authenticators to submit the challenge response. Challenges are only allowed on requests with a valid user. A user is valid when the `RoutingContext.user()` is not `null`.
      Parameters:
        `route` - the location where users are to submit challenge responses from authenticator devices/apps.
      Returns:
        fluent self.

    - #### issuer

          OtpAuthHandler issuer(String issuer)

      Configure the `issuer` value to be shown in the authenticator URL.
      Parameters:
        `issuer` - a `String` for example `Vert.x OTP`
      Returns:
        fluent self.

    - #### label

          OtpAuthHandler label(String label)

      Configure the `label` value to be shown in the authenticator URL. When this value is provided it will overwrite the default label which is composed of the `issuer` and the current `user` id.
      Parameters:
        `label` - a `String` for example `Vert.x OTP`
      Returns:
        fluent self.

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