OpensslWrapper::openssl_decrypt() - Code Metrics - Inspection of "no message" - mmeyer2k/dcrypt - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 7194ef...e1b380 )

by Michael

created 2019-05-13 23:02 UTC

OpensslWrapper::openssl_decrypt() A

↳ Parent: OpensslWrapper

Complexity

Conditions	2
Paths	2

Size

Total Lines

Duplication

Lines	10
Ratio	100 %

Importance

Changes

Metric	Value
dl	10
loc	10
rs	9.9332
c	0
b	0
f	0
cc	2
nc	2
nop	5

<?php declare(strict_types=1);

/**
 * OpensslWrapper.php
 *
 * PHP version 7
 *
 * @category Dcrypt
 * @package  Dcrypt
 * @author   Michael Meyer (mmeyer2k) <[email protected]>
 * @license  http://opensource.org/licenses/MIT The MIT License (MIT)
 * @link     https://github.com/mmeyer2k/dcrypt
 */

namespace Dcrypt;

class OpensslWrapper
{

    /**
     * OpenSSL encrypt wrapper function
     *
     * @param string $input  Data to decrypt
     * @param string $method Cipher method to use
     * @param string $key    Key string
     * @param string $iv     Initialization vector
     * @return string
     */
    protected static function openssl_encrypt(string $input, string $method, string $key, string $iv, string &$tag): string

    {
        if (OpensslStatic::tagRequired($method)) {

            $ret = \openssl_encrypt($input, $method, $key, OPENSSL_RAW_DATA, $iv, $tag, '', 4);
        } else {
            $ret = \openssl_encrypt($input, $method, $key, OPENSSL_RAW_DATA, $iv);
        }

        return self::returnOrException($ret);
    }

    /**
     * OpenSSL decrypt wrapper function
     *
     * @param string $input  Data to decrypt
     * @param string $method Cipher method to use
     * @param string $key    Key string
     * @param string $iv     Initialization vector
     * @return string
     */
    protected static function openssl_decrypt(string $input, string $method, string $key, string $iv, string $tag): string

    {
        if (OpensslStatic::tagRequired($method)) {

            $ret = \openssl_decrypt($input, $method, $key, OPENSSL_RAW_DATA, $iv, $tag, '');
        } else {
            $ret = \openssl_decrypt($input, $method, $key, OPENSSL_RAW_DATA, $iv);
        }

        return self::returnOrException($ret);
    }

    /**
     * Throw an exception if openssl function returns false
     *
     * @param string|bool $data
     * @return string
     * @throws \Exception
     */
    protected static function returnOrException($data): string
    {
        if ($data === false) {
            throw new \Exception('OpenSSL failed to encrypt/decrypt message.');
        }

        return $data;
    }

    /**
     * Get IV size for specified CIPHER.
     *
     * @param string $cipher
     * @return int
     * @throws \Exception
     */
    protected static function ivSize(string $cipher): int
    {
        $ret = \openssl_cipher_iv_length($cipher);

        if ($ret === false) {
            throw new \Exception("Failed to determine correct IV size.");
        }

        return $ret;
    }

    /**
     * Determines if the provided cipher requires a tag
     *
     * @param string $cipher
     * @return bool
     */
    protected static function tagRequired(string $cipher): bool
    {
        $cipher = strtolower($cipher);

        $needle_tips = [
            '-gcm',
            '-ccm',
        ];

        foreach ($needle_tips as $needle) {
            if (strpos($cipher, $needle)) {
                return true;
            }
        }

        return false;
    }
}


1		<?php declare(strict_types=1);
2
3		/**
4		* OpensslWrapper.php
5		*
6		* PHP version 7
7		*
8		* @category Dcrypt
9		* @package Dcrypt
10		* @author Michael Meyer (mmeyer2k) <[email protected]>
11		* @license http://opensource.org/licenses/MIT The MIT License (MIT)
12		* @link https://github.com/mmeyer2k/dcrypt
13		*/
14
15		namespace Dcrypt;
16
17		class OpensslWrapper
18		{
19
20		/**
21		* OpenSSL encrypt wrapper function
22		*
23		* @param string $input Data to decrypt
24		* @param string $method Cipher method to use
25		* @param string $key Key string
26		* @param string $iv Initialization vector
27		* @return string
28		*/
29	View Code Duplication	protected static function openssl_encrypt(string $input, string $method, string $key, string $iv, string &$tag): string
		0 ignored issues – show Duplication introduced 2019-04-30 15:13 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
30		{
31		if (OpensslStatic::tagRequired($method)) {
		0 ignored issues – show Bug introduced 2019-05-08 18:31 UTC by Report Bug Copy Issue Report The method `tagRequired()` cannot be called from this context as it is declared protected in class `Dcrypt\OpensslWrapper`. This check looks for access to methods that are not accessible from the current context. If you need to make a method accessible to another context you can raise its visibility level in the defining class. Loading history...
32		$ret = \openssl_encrypt($input, $method, $key, OPENSSL_RAW_DATA, $iv, $tag, '', 4);
33		} else {
34		$ret = \openssl_encrypt($input, $method, $key, OPENSSL_RAW_DATA, $iv);
35		}
36
37		return self::returnOrException($ret);
38		}
39
40		/**
41		* OpenSSL decrypt wrapper function
42		*
43		* @param string $input Data to decrypt
44		* @param string $method Cipher method to use
45		* @param string $key Key string
46		* @param string $iv Initialization vector
47		* @return string
48		*/
49	View Code Duplication	protected static function openssl_decrypt(string $input, string $method, string $key, string $iv, string $tag): string
		0 ignored issues – show Duplication introduced 2019-04-30 15:13 UTC by Report Bug Copy Issue Report This method seems to be duplicated in your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
50		{
51		if (OpensslStatic::tagRequired($method)) {
		0 ignored issues – show Bug introduced 2019-05-08 18:31 UTC by Report Bug Copy Issue Report The method `tagRequired()` cannot be called from this context as it is declared protected in class `Dcrypt\OpensslWrapper`. This check looks for access to methods that are not accessible from the current context. If you need to make a method accessible to another context you can raise its visibility level in the defining class. Loading history...
52		$ret = \openssl_decrypt($input, $method, $key, OPENSSL_RAW_DATA, $iv, $tag, '');
53		} else {
54		$ret = \openssl_decrypt($input, $method, $key, OPENSSL_RAW_DATA, $iv);
55		}
56
57		return self::returnOrException($ret);
58		}
59
60		/**
61		* Throw an exception if openssl function returns false
62		*
63		* @param string\|bool $data
64		* @return string
65		* @throws \Exception
66		*/
67		protected static function returnOrException($data): string
68		{
69		if ($data === false) {
70		throw new \Exception('OpenSSL failed to encrypt/decrypt message.');
71		}
72
73		return $data;
74		}
75
76		/**
77		* Get IV size for specified CIPHER.
78		*
79		* @param string $cipher
80		* @return int
81		* @throws \Exception
82		*/
83		protected static function ivSize(string $cipher): int
84		{
85		$ret = \openssl_cipher_iv_length($cipher);
86
87		if ($ret === false) {
88		throw new \Exception("Failed to determine correct IV size.");
89		}
90
91		return $ret;
92		}
93
94		/**
95		* Determines if the provided cipher requires a tag
96		*
97		* @param string $cipher
98		* @return bool
99		*/
100		protected static function tagRequired(string $cipher): bool
101		{
102		$cipher = strtolower($cipher);
103
104		$needle_tips = [
105		'-gcm',
106		'-ccm',
107		];
108
109		foreach ($needle_tips as $needle) {
110		if (strpos($cipher, $needle)) {
111		return true;
112		}
113		}
114
115		return false;
116		}
117		}
118

mmeyer2k / dcrypt

Push — master ( 7194ef...e1b380 )

OpensslWrapper::openssl_decrypt() A

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