Implement Knox Token utility to sign access tokens

Author: akondas

.gitignore

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 /vendor/
+.phpunit.result.cache

.php_cs

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+<?php
+
+return PhpCsFixer\Config::create()
+    ->setRules([
+        '@PSR2' => true,
+        'array_syntax' => ['syntax' => 'short'],
+        'binary_operator_spaces' => ['align_double_arrow' => false, 'align_equals' => false],
+        'blank_line_after_opening_tag' => true,
+        'blank_line_before_return' => true,
+        'cast_spaces' => true,
+        'concat_space' => ['spacing' => 'none'],
+        'declare_strict_types' => true,
+        'method_separation' => true,
+        'no_blank_lines_after_class_opening' => true,
+        'no_spaces_around_offset' => ['positions' => ['inside', 'outside']],
+        'no_unneeded_control_parentheses' => true,
+        'no_unused_imports' => true,
+        'phpdoc_align' => true,
+        'phpdoc_no_access' => true,
+        'phpdoc_separation' => true,
+        'pre_increment' => true,
+        'single_quote' => true,
+        'trim_array_spaces' => true,
+        'single_blank_line_before_namespace' => true
+    ])
+    ->setFinder(
+        PhpCsFixer\Finder::create()
+            ->in(__DIR__ . '/src')
+            ->in(__DIR__ . '/tests')
+    )
+    ->setRiskyAllowed(true)
+    ->setUsingCache(false)
+;

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2019 Proget Sp. z o.o.
+
+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.

README.md

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+# Knox Token
+
+Support library for signing Samsung Knox API access tokens
+
+## Install
+
+```
+composer require proget-hq/knox-token
+```
+
+## Usage
+
+More info at [Knox Cloud API Integration Guide](https://docs.samsungknox.com/cloud-authentication/api-reference/Default.htm#section/Generate-your-access-token)
+
+### Sign your Client Identifier
+
+```php
+use Proget\KnoxToken;
+
+$clientIdentifierJwt = KnoxToken::signClientIdentifier('your-client-identifier', 'keys.json');
+```
+
+### Sign your Access Token
+
+```php
+use Proget\KnoxToken;
+
+$accessTokenJwt = KnoxToken::signAccessToken('access-token', 'keys.json');
+```
+
+## License
+
+MIT

composer.json

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+{
+    "name": "proget-hq/knox-token",
+    "description": "Support library for signing Samsung Knox API access tokens",
+    "type": "library",
+    "require": {
+        "ext-json": "*",
+        "firebase/php-jwt": "^5.0",
+        "ramsey/uuid": "^3.8"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^8.2",
+        "friendsofphp/php-cs-fixer": "^2.15"
+    },
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Arkadiusz Kondas",
+            "email": "arkadiusz.kondas@gmail.com"
+        }
+    ],
+    "autoload": {
+        "psr-4": {
+            "Proget\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "Proget\\Tests\\": "tests/"
+        }
+    },
+    "scripts": {
+        "check-cs": "php-cs-fixer fix --dry-run",
+        "fix-cs": "php-cs-fixer fix",
+        "test": "phpunit"
+    }
+}