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TOTP

Last modified 18 Feb 2026 23:01 +01:00

totp module can’t be the first module in the sequence. Before totp module, we need to use authentication module for identification of the user, for example focusIdentification.

Definition of "totp" module. The module is used for MFA authentication of a user by using Time-based One-Time Password (TOTP) algorithm.

Example of totp module configuration

<totp>
    <identifier>my otp</identifier>
    <issuer>local midpoint</issuer>

    <!-- following properties are optional, default values are shown -->

    <!-- item path to FocusType property used as label in auth URI -->
    <label>name</label>
    <!-- Time step in seconds. -->
    <period>30</period>
    <!--
        Number of digits in generated OTP, default is 6, supported values are 6 and 8.
        Most of the authenticator apps support only 6 digits.
    -->
    <digits>6</digits>
    <!-- Supported algorithms are: sha1, sha256, sha512 -->
    <algorithm>sha1</algorithm>
    <!-- Secret length in bytes, defaults are specified for all supported algorithms -->
    <secretLength>20</secretLength>
    <!--
        The number of time steps that are allowed for the TOTP code to be valid.
        This allows for some clock skew between the server and the client.
    -->
    <window>1</window>
</totp>

TOTP

See also