ContentEncryptionKeyFactory::build() - Code Metrics - smarcet/JOSE4PHP - Measure and Improve Code Quality continuously with Scrutinizer

ContentEncryptionKeyFactory::build() B
last analyzed 2019-07-12 23:37 UTC

↳ Parent: ContentEncryptionKeyFactory

Complexity

Conditions	6
Paths	6

Size

Total Lines

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	42
rs	8.6257
c	0
b	0
f	0
cc	6
nc	6
nop	3

<?php namespace jwe\impl;
/**
 * Copyright 2015 OpenStack Foundation
 * 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.
 **/
use jwa\cryptographic_algorithms\content_encryption\ContentEncryptionAlgorithm;
use jwa\cryptographic_algorithms\EncryptionAlgorithm;
use jwe\KeyManagementModeValues;
use security\Key;
use utils\services\Utils_Registry;
/**
 * Class ContentEncryptionKeyFactory
 *
 * Creates the CEK
 *
 * @package jwe\impl
 */
final class ContentEncryptionKeyFactory
{

    /**
     * @param Key $management_key
     * @param $key_management_mode
     * @param ContentEncryptionAlgorithm $enc
     * @return Key
     * @throws \Exception
     */
    static public function build(Key $management_key, $key_management_mode, ContentEncryptionAlgorithm $enc)
    {

        $cek = null;
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}

        switch ($key_management_mode) {
            /**
             * When Key Wrapping, Key Encryption, or Key Agreement with Key
             * Wrapping are employed, generate a random CEK value
             */
            case KeyManagementModeValues::KeyWrapping:
            case KeyManagementModeValues::KeyEncryption:
            case KeyManagementModeValues::KeyAgreementWithKeyWrapping:
            {
                // calculate it
                $generator = Utils_Registry::getInstance()->get(Utils_Registry::RandomNumberGeneratorService);
                /**
                 * The CEK MUST have a length equal to that required for the
                 * content encryption algorithm.
                 */
                $rnd       = $generator->invoke($enc->getMinKeyLen()/8);

                $cek       = new _ContentEncryptionKey($enc->getName(), 'RAW', $rnd);
            }
            break;
            case KeyManagementModeValues::DirectEncryption:
            {
                $cek = $management_key;
            }
            break;
            case KeyManagementModeValues::DirectKeyAgreement:
            {
                throw new \Exception('unsupported KKM!');
            }
            break;
function fx() {
    try {
        doSomething();
        return true;
    }
    catch (\Exception $e) {
        return false;
    }

    return false;
}
            default:
            {
                throw new \Exception('unsupported KKM!');
            }
            break;
function fx() {
    try {
        doSomething();
        return true;
    }
    catch (\Exception $e) {
        return false;
    }

    return false;
}
        }
        return $cek;
    }

    /**
     * @param string $value
     * @param EncryptionAlgorithm $alg
     * @return Key
     */
    static public function fromRaw($value, EncryptionAlgorithm $alg){
        return  new _ContentEncryptionKey($alg->getName(), 'RAW', $value);
    }
}

1			<?php namespace jwe\impl;
2			/**
3			* Copyright 2015 OpenStack Foundation
4			* Licensed under the Apache License, Version 2.0 (the "License");
5			* you may not use this file except in compliance with the License.
6			* You may obtain a copy of the License at
7			* http://www.apache.org/licenses/LICENSE-2.0
8			* Unless required by applicable law or agreed to in writing, software
9			* distributed under the License is distributed on an "AS IS" BASIS,
10			* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11			* See the License for the specific language governing permissions and
12			* limitations under the License.
13			**/
14			use jwa\cryptographic_algorithms\content_encryption\ContentEncryptionAlgorithm;
15			use jwa\cryptographic_algorithms\EncryptionAlgorithm;
16			use jwe\KeyManagementModeValues;
17			use security\Key;
18			use utils\services\Utils_Registry;
19			/**
20			* Class ContentEncryptionKeyFactory
21			*
22			* Creates the CEK
23			*
24			* @package jwe\impl
25			*/
26			final class ContentEncryptionKeyFactory
27			{
28
29			/**
30			* @param Key $management_key
31			* @param $key_management_mode
32			* @param ContentEncryptionAlgorithm $enc
33			* @return Key
34			* @throws \Exception
35			*/
36			static public function build(Key $management_key, $key_management_mode, ContentEncryptionAlgorithm $enc)
37			{
38
39			$cek = null;
			0 ignored issues – show Unused Code introduced 2016-04-05 19:09 UTC by Report Bug Copy Issue Report `$cek` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
40
41			switch ($key_management_mode) {
42			/**
43			* When Key Wrapping, Key Encryption, or Key Agreement with Key
44			* Wrapping are employed, generate a random CEK value
45			*/
46			case KeyManagementModeValues::KeyWrapping:
47			case KeyManagementModeValues::KeyEncryption:
48			case KeyManagementModeValues::KeyAgreementWithKeyWrapping:
49			{
50			// calculate it
51			$generator = Utils_Registry::getInstance()->get(Utils_Registry::RandomNumberGeneratorService);
52			/**
53			* The CEK MUST have a length equal to that required for the
54			* content encryption algorithm.
55			*/
56			$rnd = $generator->invoke($enc->getMinKeyLen()/8);
			0 ignored issues – show Unused Code introduced 2016-04-05 19:09 UTC by Report Bug Copy Issue Report The call to `IService::invoke()` has too many arguments starting with `$enc->getMinKeyLen() / 8`. This check compares calls to functions or methods with their respective definitions. If the call has more arguments than are defined, it raises an issue. If a function is defined several times with a different number of parameters, the check may pick up the wrong definition and report false positives. One codebase where this has been known to happen is Wordpress. In this case you can add the `@ignore` PhpDoc annotation to the duplicate definition and it will be ignored. Loading history...
57			$cek = new _ContentEncryptionKey($enc->getName(), 'RAW', $rnd);
58			}
59			break;
60			case KeyManagementModeValues::DirectEncryption:
61			{
62			$cek = $management_key;
63			}
64			break;
65			case KeyManagementModeValues::DirectKeyAgreement:
66			{
67			throw new \Exception('unsupported KKM!');
68			}
69			break;
			0 ignored issues – show Unused Code introduced 2016-04-05 19:09 UTC by Report Bug Copy Issue Report `break;` does not seem to be reachable. This check looks for unreachable code. It uses sophisticated control flow analysis techniques to find statements which will never be executed. Unreachable code is most often the result of `return`, `die` or `exit` statements that have been added for debug purposes. function fx() { try { doSomething(); return true; } catch (\Exception $e) { return false; } return false; } In the above example, the last `return false` will never be executed, because a return statement has already been met in every possible execution path. Loading history...
70			default:
71			{
72			throw new \Exception('unsupported KKM!');
73			}
74			break;
			0 ignored issues – show Unused Code introduced 2016-04-05 19:09 UTC by Report Bug Copy Issue Report `break;` does not seem to be reachable. This check looks for unreachable code. It uses sophisticated control flow analysis techniques to find statements which will never be executed. Unreachable code is most often the result of `return`, `die` or `exit` statements that have been added for debug purposes. function fx() { try { doSomething(); return true; } catch (\Exception $e) { return false; } return false; } In the above example, the last `return false` will never be executed, because a return statement has already been met in every possible execution path. Loading history...
75			}
76			return $cek;
77			}
78
79			/**
80			* @param string $value
81			* @param EncryptionAlgorithm $alg
82			* @return Key
83			*/
84			static public function fromRaw($value, EncryptionAlgorithm $alg){
85			return new _ContentEncryptionKey($alg->getName(), 'RAW', $value);
86			}
87			}

smarcet / JOSE4PHP

ContentEncryptionKeyFactory::build() B last analyzed 2019-07-12 23:37 UTC

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ContentEncryptionKeyFactory::build() B
last analyzed 2019-07-12 23:37 UTC