d3mo17/captcha

Provides a captcha mechanism

Maintainers

Details

github.com/d3mo17/captcha

Source

Issues

Installs: 68

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0.9.8 2022-03-14 10:04 UTC

Requires

  • php: >=7.1

Requires (Dev)

mit ca5677f933238fc95b1855e7fbd02be1ead47347

  • Daniel Moritz

securityFormscaptcha

This package is auto-updated.

Last update: 2024-05-14 13:26:58 UTC

README

A library trying to secure form submits without the need of separate user input (code read from distorted image).

Mode of operation

Class "Code" generates an array with seven keys. It depends on the current server time which keys will become set with values and which not. The idea is to create seven input elements in a form, put the values from the generated array into the input elements, submit these values along with the other input data from user, restore the original code array from incoming request on server side and validate the restored array against class "Code" again.

So basically the only methods you need after instance object from class \DMo\Captcha\Code, are get to fetch the generated code and validate to compare restored array from request.

You can use class \DMo\Captcha\HTMLGenerator to generate the html-code for the input elements from instance of class \DMo\Captcha\Code and also to restore the code array from incoming request parameters after the form submit.

Please have a look to the examples for more clarity.

License

The MIT License (MIT)

Copyright (c) 2022 Daniel Moritz

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.