PBEKDF1::derive() - Code Metrics - sop/pkcs5 - Measure and Improve Code Quality continuously with Scrutinizer

PBEKDF1::derive() A
last analyzed 2019-05-23 07:36 UTC

↳ Parent: PBEKDF1

Complexity

Conditions	3
Paths	3

Size

Total Lines	11
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	7
CRAP Score	3

Importance

Changes

Metric	Value
eloc	6
dl	0
loc	11
c	0
b	0
f	0
ccs	7
cts	7
cp	1
rs	10
cc	3
nc	3
nop	4
crap	3

<?php

declare(strict_types = 1);

namespace Sop\PKCS5\PBEKD;

use Sop\PKCS5\HashFunc\HashFunc;

/**
 * Implements key derivation function #1 used in password-based cryptography.
 *
 * @see https://tools.ietf.org/html/rfc2898#section-5.1
 */
class PBEKDF1 extends PBEKDF
{
    /**
     * Hash functor.
     *
     * @var HashFunc
     */
    protected $_hashFunc;

    /**
     * Constructor.
     *
     * @param HashFunc $hashfunc
     */
    public function __construct(HashFunc $hashfunc)
    {
        $this->_hashFunc = $hashfunc;
    }

    /**
     * {@inheritdoc}
     */
    public function derive(string $password, string $salt, int $count,
        int $length): string
    {
        if ($length > $this->_hashFunc->length()) {
            throw new \LogicException('Derived key too long.');
        }
        $key = $password . $salt;
        for ($i = 0; $i < $count; ++$i) {
            $key = $this->_hashFunc->__invoke($key);
        }
        return substr($key, 0, $length);
    }
}


1		<?php
2
3		declare(strict_types = 1);
4
5		namespace Sop\PKCS5\PBEKD;
6
7		use Sop\PKCS5\HashFunc\HashFunc;
8
9		/**
10		* Implements key derivation function #1 used in password-based cryptography.
11		*
12		* @see https://tools.ietf.org/html/rfc2898#section-5.1
13		*/
14		class PBEKDF1 extends PBEKDF
15		{
16		/**
17		* Hash functor.
18		*
19		* @var HashFunc
20		*/
21		protected $_hashFunc;
22
23		/**
24		* Constructor.
25		*
26		* @param HashFunc $hashfunc
27		*/
28	10	public function __construct(HashFunc $hashfunc)
29		{
30	10	$this->_hashFunc = $hashfunc;
31	10	}
32
33		/**
34		* {@inheritdoc}
35		*/
36	11	public function derive(string $password, string $salt, int $count,
37		int $length): string
38		{
39	11	if ($length > $this->_hashFunc->length()) {
40	1	throw new \LogicException('Derived key too long.');
41		}
42	10	$key = $password . $salt;
43	10	for ($i = 0; $i < $count; ++$i) {
44	10	$key = $this->_hashFunc->__invoke($key);
45		}
46	10	return substr($key, 0, $length);
47		}
48		}
49

sop / pkcs5

PBEKDF1::derive() A last analyzed 2019-05-23 07:36 UTC

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PBEKDF1::derive() A
last analyzed 2019-05-23 07:36 UTC