io.vertx.ext.auth.otp.totp

## Interface TotpAuth

- All Superinterfaces:
    AuthenticationProvider

      public interface TotpAuth
      extends AuthenticationProvider

  An extension of AuthProvider which uses the one time passwords based on time to perform authentication.
  Author:
    Dmitry Novikov

- - ### Method Summary

    All Methods Static Methods Instance Methods Abstract Methods Default Methods
    Modifier and Type | Method and Description
    --- | ---
    `TotpAuth` | `authenticatorFetcher(java.util.function.Function<String,Future<Authenticator>> fetcher)` Provide a `Function` that can fetch `Authenticator`s from a backend given an `identifier` argument.
    `TotpAuth` | `authenticatorUpdater(java.util.function.Function<Authenticator,Future<Void>> updater)` Provide a `Function` that can update or insert a `Authenticator`.
    `static TotpAuth` | `create()` Creates an instance of TotpAuth.
    `static TotpAuth` | `create(TotpAuthOptions totpAuthOptions)` Creates an instance of TotpAuth.
    `Future<Authenticator>` | `createAuthenticator(String id, OtpKey otpKey)` Creating authenticator from user id and key.
    `default String` | `generateUri(OtpKey otpKey, String label)` Creating URI for register in key in user device.
    `default String` | `generateUri(OtpKey otpKey, String issuer, String user)` Creating URI for register in key in user device.
    `String` | `generateUri(OtpKey otpKey, String issuer, String user, String label)` Creating URI for register in key in user device.

    - ### Methods inherited from interface io.vertx.ext.auth.authentication.AuthenticationProvider

      `authenticate, authenticate, authenticate, authenticate`

- - ### Method Detail

    - #### authenticatorFetcher

          TotpAuth authenticatorFetcher(java.util.function.Function<String,Future<Authenticator>> fetcher)

      Provide a `Function` that can fetch `Authenticator`s from a backend given an `identifier` argument. The function signature is as follows: `(id) -> Future<Authenticator>`
      - `id` the identifier to lookup.
      - `Future` async result with a authenticator.
      Parameters:
        `fetcher` - fetcher function.
      Returns:
        fluent self.

    - #### authenticatorUpdater

          TotpAuth authenticatorUpdater(java.util.function.Function<Authenticator,Future<Void>> updater)

      Provide a `Function` that can update or insert a `Authenticator`. The function should store a given authenticator to a persistence storage. When an authenticator is already present, this method must at least update `Authenticator.getCounter()`, and is not required to perform any other update. For new authenticators, the whole object data must be persisted. The function signature is as follows: `(Authenticator) -> Future<Void>`
      - `Authenticator` the authenticator data to update.
      - `Future`async result of the operation.
      Parameters:
        `updater` - updater function.
      Returns:
        fluent self.

    - #### createAuthenticator

          Future<Authenticator> createAuthenticator(String id,
                                                    OtpKey otpKey)

      Creating authenticator from user id and key.
      Parameters:
        `id` - id user.
        `otpKey` - key of user used for auth.
      Returns:
        `Authenticator` an object containing all the necessary information to authenticate a user.

    - #### generateUri

          String generateUri(OtpKey otpKey,
                             String issuer,
                             String user,
                             String label)

      Creating URI for register in key in user device.
      Parameters:
        `otpKey` - user key.
        `issuer` - issuer of key.
        `user` - display name of user account.
        `label` - the label to identify which account a key is associated with.
      Returns:
        uri containing the key.

    - #### generateUri

          default String generateUri(OtpKey otpKey,
                                     String issuer,
                                     String user)

      Creating URI for register in key in user device.
      Parameters:
        `otpKey` - user key.
        `issuer` - issuer of key.
        `user` - display name of user account.
      Returns:
        uri containing the key.

    - #### generateUri

          default String generateUri(OtpKey otpKey,
                                     String label)

      Creating URI for register in key in user device.
      Parameters:
        `otpKey` - user key.
        `label` - the label to identify which account a key is associated with.
      Returns:
        uri containing the key.

    - #### create

          static TotpAuth create()

      Creates an instance of TotpAuth.
      Returns:
        the created instance of `TotpAuth`.

    - #### create

          static TotpAuth create(TotpAuthOptions totpAuthOptions)

      Creates an instance of TotpAuth.
      Parameters:
        `totpAuthOptions` - the config.
      Returns:
        the created instance of `TotpAuth`.

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