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Example code of abmmhasan/otp

Informations about the package otp

OTP

Security & Standards Codacy Badge Packagist Downloads (custom server) License: MIT Packagist Version Packagist PHP Version GitHub code size in bytes ![]()

Simple but Secure AIO OTP solution. Supports,

Table of Contents

Prerequisites

Language: PHP 8.2/+

Library Version PHP Version
3.x.x/+ 8.2.x or Higher
2.x.x 8.x.x
1.x.x 7.x.x

Installation

Why this library?

TOTP & HOTP

Generic OTP

OCRA

Usage

HOTP (RFC4226)

The getProvisioningUriQR & getProvisioningUri accepts 3rd parameter, where it takes array of parameters ['algorithm', 'digits', 'period', 'counter']. Problem you might encounter, with the URI/Image is that most of the OTP generator might not support all of those options. In that case, passing in a blank array will remove all the optional keys, or you can pass in selective parameters as you need. Additionally, you can also pass in additional parameter to reflect in URI string or QR image in 4th parameter. But be cautious that, it might not be supported by the Client Apps.

TOTP (RFC6238)

The getProvisioningUriQR & getProvisioningUri accepts 3rd parameter, where it takes array of parameters ['algorithm', 'digits', 'period', 'counter']. Problem you might encounter, with the URI/Image is that most of the OTP generator might not support all of those options. In that case, passing in a blank array will remove all the optional keys, or you can pass in selective parameters as you need. Additionally, you can also pass in additional parameter to reflect in URI string or QR image in 4th parameter. But be cautious that, it might not be supported by the Client Apps.

On 3rd parameter (bool) it supports, enabling leeway. If enabled, it will also check with last segment's generated otp.

Generic OTP

On 3rd parameter setting false will keep the record till the otp is verified or expired. By default, will keep the record till the key name match or the otp is verified or expired

Generic OTP uses temporary location for storage, make sure you have proper access permission

OCRA (RFC6287)

Forming an OCRA Suite

According to current RFC6287, an example string should be in the following format:

Here OCRA-1:HOTP- is fixed as of current documentation.

Format (F) Up to Length (xx)
A (alphanumeric) 04-64
N (numeric) 04-64
H (hexadecimal) 04-64
Time-Step Size (G) Examples
[1-59]S number of seconds, e.g., 20S
[1-59]M number of minutes, e.g., 5M
[0-48]H number of hours, e.g., 24H

Support

Having trouble? Create an issue!

References

All versions of otp with dependencies

PHP Build Version
Package Version
Requires php Version >=8.2
bacon/bacon-qr-code Version ^3.0
paragonie/constant_time_encoding Version ^3.0
symfony/cache Version ^7.0
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