.. index:: single: otp .. _otp/0:

.. rst-class:: right

object

otp

HOTP and TOTP generation and verification predicates.

| Availability: | logtalk_load(otp(loader))

| Author: Paulo Moura | Version: 1:0:0 | Date: 2026-07-14

| Compilation flags: | static, context_switching_calls

| Implements: | public :ref:`otp_protocol <otp_protocol/0>` | Uses: | :ref:`base32 <base32/0>` | :ref:`hmac <hmac/0>` | :ref:`list <list/0>`

| Remarks: | (none)

| Inherited public predicates: |  :ref:`otp_protocol/0::hotp/5`  :ref:`otp_protocol/0::hotp_verify/7`  :ref:`otp_protocol/0::totp/5`  :ref:`otp_protocol/0::totp_verify/7`  

.. contents:: :local: :backlinks: top

Public predicates

(no local declarations; see entity ancestors if any)

Protected predicates

(no local declarations; see entity ancestors if any)

Private predicates

(no local declarations; see entity ancestors if any)

Operators

(none)

.. seealso::

:ref:`base32 <base32/0>`, :ref:`hmac <hmac/0>`, :ref:`sha1 <sha1/0>`, :ref:`sha256 <sha256/0>`, :ref:`sha512_256 <sha512_256/0>`