Developer
# Constant-Time Encoding [](https://github.com/paragonie/constant_time_encoding/actions) [](https://packagist.org/packages/paragonie/constant_time_encoding) [](https://packagist.org/packages/paragonie/constant_time_encoding) [](https://packagist.org/packages/paragonie/constant_time_encoding) [](https://packagist.org/packages/paragonie/constant_time_encoding) Based on the [constant-time base64 implementation made by Steve "Sc00bz" Thomas](https://github.com/Sc00bz/ConstTimeEncoding), this library aims to offer character encoding functions that do not leak information about what you are encoding/decoding via processor cache misses. Further reading on [cache-timing attacks](http://blog.ircmaxell.com/2014/11/its-all-about-time.html). Our fork offers the following enchancements: * `mbstring.func_overload` resistance * Unit tests * Composer- and Packagist-ready * Base16 encoding * Base32 encoding * Uses `pack()` and `unpack()` instead of `chr()` and `ord()` ## PHP Version Requirements Version 2 of this library should work on **PHP 7** or newer. For PHP 5 support, see [the v1.x branch](https://github.com/paragonie/constant_time_encoding/tree/v1.x). If you are adding this as a dependency to a project intended to work on both PHP 5 and PHP 7, please set the required version to `^1|^2` instead of just `^1` or `^2`. ## How to Install ```sh composer require paragonie/constant_time_encoding ``` ## How to Use ```php use ParagonIE\ConstantTime\Encoding; // possibly (if applicable): // require 'vendor/autoload.php'; $data = random_bytes(32); echo Encoding::base64Encode($data), "\n"; echo Encoding::base32EncodeUpper($data), "\n"; echo Encoding::base32Encode($data), "\n"; echo Encoding::hexEncode($data), "\n"; echo Encoding::hexEncodeUpper($data), "\n"; ``` Example output: ``` 1VilPkeVqirlPifk5scbzcTTbMT2clp+Zkyv9VFFasE= 2VMKKPSHSWVCVZJ6E7SONRY3ZXCNG3GE6ZZFU7TGJSX7KUKFNLAQ==== 2vmkkpshswvcvzj6e7sonry3zxcng3ge6zzfu7tgjsx7kukfnlaq==== d558a53e4795aa2ae53e27e4e6c71bcdc4d36cc4f6725a7e664caff551456ac1 D558A53E4795AA2AE53E27E4E6C71BDCC4D36CC4F6725A7E664CAFF551456AC1 ``` If you only need a particular variant, you can just reference the required class like so: ```php use ParagonIE\ConstantTime\Base64; use ParagonIE\ConstantTime\Base32; $data = random_bytes(32); echo Base64::encode($data), "\n"; echo Base32::encode($data), "\n"; ``` Example output: ``` 1VilPkeVqirlPifk5scbzcTTbMT2clp+Zkyv9VFFasE= 2vmkkpshswvcvzj6e7sonry3zxcng3ge6zzfu7tgjsx7kukfnlaq==== ``` ## Support Contracts If your company uses this library in their products or services, you may be interested in [purchasing a support contract from Paragon Initiative Enterprises](https://paragonie.com/enterprise).
Developer
Welcome to the Kueue Pay Payment Gateway Solutions Developer API Documentation. This comprehensive guide will empower you to seamlessly integrate our advanced payment gateway into your website, enhancing your customers’ payment experience and enabling efficient transaction processing. The Kueue Pay Developer API is designed for developers and entrepreneurs who seek simplicity, security, and reliability in their payment processing solutions.
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