for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php
/**
* Copyright 2017 American Express Travel Related Services Company, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
declare(strict_types=1);
namespace AmericanExpress\HyperledgerFabricClient\Nonce;
use AmericanExpress\HyperledgerFabricClient\Exception\InvalidArgumentException;
use Assert\Assertion;
use Assert\AssertionFailedException;
final class RandomBytesNonceGenerator implements NonceGeneratorInterface
{
* @var int
private $nonceSize;
* Utils constructor.
* @param int $nonceSize
* @throws InvalidArgumentException
public function __construct(int $nonceSize = 24)
try {
Assertion::greaterThan($nonceSize, -1);
} catch (AssertionFailedException $e) {
throw InvalidArgumentException::fromException($e);
}
$this->nonceSize = $nonceSize;
* @return string
public function generateNonce(): string
return \random_bytes($this->nonceSize);