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diff --git a/lib/pleroma/mfa/token.ex b/lib/pleroma/mfa/token.ex
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+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
+defmodule Pleroma.MFA.Token do
+  use Ecto.Schema
+  import Ecto.Query
+  import Ecto.Changeset
+
+  alias Pleroma.Repo
+  alias Pleroma.User
+  alias Pleroma.Web.OAuth.Authorization
+  alias Pleroma.Web.OAuth.Token, as: OAuthToken
+
+  @expires 300
+
+  schema "mfa_tokens" do
+    field(:token, :string)
+    field(:valid_until, :naive_datetime_usec)
+
+    belongs_to(:user, User, type: FlakeId.Ecto.CompatType)
+    belongs_to(:authorization, Authorization)
+
+    timestamps()
+  end
+
+  def get_by_token(token) do
+    from(
+      t in __MODULE__,
+      where: t.token == ^token,
+      preload: [:user, :authorization]
+    )
+    |> Repo.find_resource()
+  end
+
+  def validate(token) do
+    with {:fetch_token, {:ok, token}} <- {:fetch_token, get_by_token(token)},
+         {:expired, false} <- {:expired, is_expired?(token)} do
+      {:ok, token}
+    else
+      {:expired, _} -> {:error, :expired_token}
+      {:fetch_token, _} -> {:error, :not_found}
+      error -> {:error, error}
+    end
+  end
+
+  def create_token(%User{} = user) do
+    %__MODULE__{}
+    |> change
+    |> assign_user(user)
+    |> put_token
+    |> put_valid_until
+    |> Repo.insert()
+  end
+
+  def create_token(user, authorization) do
+    %__MODULE__{}
+    |> change
+    |> assign_user(user)
+    |> assign_authorization(authorization)
+    |> put_token
+    |> put_valid_until
+    |> Repo.insert()
+  end
+
+  defp assign_user(changeset, user) do
+    changeset
+    |> put_assoc(:user, user)
+    |> validate_required([:user])
+  end
+
+  defp assign_authorization(changeset, authorization) do
+    changeset
+    |> put_assoc(:authorization, authorization)
+    |> validate_required([:authorization])
+  end
+
+  defp put_token(changeset) do
+    changeset
+    |> change(%{token: OAuthToken.Utils.generate_token()})
+    |> validate_required([:token])
+    |> unique_constraint(:token)
+  end
+
+  defp put_valid_until(changeset) do
+    expires_in = NaiveDateTime.add(NaiveDateTime.utc_now(), @expires)
+
+    changeset
+    |> change(%{valid_until: expires_in})
+    |> validate_required([:valid_until])
+  end
+
+  def is_expired?(%__MODULE__{valid_until: valid_until}) do
+    NaiveDateTime.diff(NaiveDateTime.utc_now(), valid_until) > 0
+  end
+
+  def is_expired?(_), do: false
+
+  def delete_expired_tokens do
+    from(
+      q in __MODULE__,
+      where: fragment("?", q.valid_until) < ^Timex.now()
+    )
+    |> Repo.delete_all()
+  end
+end