Feature: #73050 - Add a CSPRNG API

See Issue #73050

Description

A new cryptographically secure pseudo-random number generator (CSPRNG) has been introduced in TYPO3 core. It takes advantage of the new CSPRNG functions in PHP 7.

API overview

The API resides in the class \TYPO3\CMS\Core\Crypto\Random . It provides several methods. Here is a brief overview of the interface:

class Random {
    /**
     * Generates cryptographic secure pseudo-random bytes
     */
    public function generateRandomBytes($length);

    /**
     * Generates cryptographic secure pseudo-random integers
     */
    public function generateRandomInteger($min, $max);

    /**
     * Generates cryptographic secure pseudo-random hex string
     */
    public function generateRandomHexString($length);
}

Example

use \TYPO3\CMS\Core\Crypto\Random;
use \TYPO3\CMS\Core\Utility\GeneralUtility;

// Retrieving random bytes
$someRandomString = GeneralUtility::makeInstance(Random::class)->generateRandomBytes(64);

// Rolling the dice..
$tossedValue = GeneralUtility::makeInstance(Random::class)->generateRandomInteger(1, 6);

Impact

None, you can start to use the CSPRNG in your code by now.