RSAKey::initPrivateKey() - Code Metrics - Inspection of "JWK to PEM converter" - Spomky-Labs/jose - Measure and Improve Code Quality continuously with Scrutinizer

Failed Conditions

Push — v7 ( 6a6683...1d7ef8 )

by Florent

created 2017-09-14 21:07 UTC

RSAKey::initPrivateKey() B

↳ Parent: RSAKey

Complexity

Conditions	4
Paths	8

Size

Total Lines	29
Code Lines	27

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	29
rs	8.5806
c	0
b	0
f	0
cc	4
eloc	27
nc	8
nop	0

<?php

declare(strict_types=1);

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2014-2017 Spomky-Labs
 *
 * This software may be modified and distributed under the terms
 * of the MIT license.  See the LICENSE file for details.
 */

namespace Jose\Component\Core\Util;

use Base64Url\Base64Url;
use FG\ASN1\Universal\BitString;
use FG\ASN1\Universal\Integer;
use FG\ASN1\Universal\NullObject;
use FG\ASN1\Universal\ObjectIdentifier;
use FG\ASN1\Universal\OctetString;
use FG\ASN1\Universal\Sequence;
use Jose\Component\Core\JWK;

final class RSAKey
{
    /**
     * @var Sequence
     */
    private $sequence;

    /**
     * @var bool
     */
    private $private = false;

    /**
     * @var array
     */
    private $values = [];

    /**
     * @var BigInteger
     */
    private $modulus;

    /**
     * @var int
     */
    private $modulus_length;

    /**
     * @var BigInteger
     */
    private $public_exponent;

    /**
     * @var BigInteger|null
     */
    private $private_exponent = null;

    /**
     * @var BigInteger[]
     */
    private $primes = [];

    /**
     * @var BigInteger[]
     */
    private $exponents = [];

    /**
     * @var BigInteger|null
     */
    private $coefficient = null;

    /**
     * @param JWK $data
     */
    private function __construct(JWK $data)
    {
        $this->loadJWK($data->all());
        $this->populateBigIntegers();
        $this->private = array_key_exists('d', $this->values);
    }

    /**
     * @param JWK $jwk
     *
     * @return RSAKey
     */
    public static function createFromJWK(JWK $jwk): RSAKey
    {
        return new self($jwk);
    }

    /**
     * @return BigInteger
     */
    public function getModulus(): BigInteger
    {
        return $this->modulus;
    }

    /**
     * @return int
     */
    public function getModulusLength(): int
    {
        return $this->modulus_length;
    }

    /**
     * @return BigInteger
     */
    public function getExponent(): BigInteger
    {
        $d = $this->getPrivateExponent();
        if (null !== $d) {
            return $d;
        }

        return $this->getPublicExponent();
    }

    /**
     * @return BigInteger
     */
    public function getPublicExponent(): BigInteger
    {
        return $this->public_exponent;
    }

    /**
     * @return BigInteger|null
     */
    public function getPrivateExponent(): ?BigInteger
    {
        return $this->private_exponent;
    }

    /**
     * @return BigInteger[]
     */
    public function getPrimes(): array
    {
        return $this->primes;
    }

    /**
     * @return BigInteger[]
     */
    public function getExponents(): array
    {
        return $this->exponents;
    }

    /**
     * @return BigInteger|null
     */
    public function getCoefficient(): ?BigInteger
    {
        return $this->coefficient;
    }

    /**
     * @return bool
     */
    public function isPublic(): bool
    {
        return !array_key_exists('d', $this->values);
    }

    /**
     * @param RSAKey $private
     *
     * @return RSAKey
     */
    public static function toPublic(RSAKey $private): RSAKey
    {
        $data = $private->toArray();
        $keys = ['p', 'd', 'q', 'dp', 'dq', 'qi'];
        foreach ($keys as $key) {
            if (array_key_exists($key, $data)) {
                unset($data[$key]);
            }
        }

        return new self(JWK::create($data));
    }

    /**
     * @return array
     */
    public function toArray(): array
    {
        return $this->values;
    }

    /**
     * @param array $jwk
     */
    private function loadJWK(array $jwk)
    {
        if (!array_key_exists('kty', $jwk)) {
            throw new \InvalidArgumentException('The key parameter "kty" is missing.');
        }
        if ('RSA' !== $jwk['kty']) {
            throw new \InvalidArgumentException('The JWK is not a RSA key.');
        }

        $this->values = $jwk;
    }

    private function populateBigIntegers()
    {
        $this->modulus = $this->convertBase64StringToBigInteger($this->values['n']);
        $this->modulus_length = mb_strlen($this->getModulus()->toBytes(), '8bit');
        $this->public_exponent = $this->convertBase64StringToBigInteger($this->values['e']);

        if (!$this->isPublic()) {
            $this->private_exponent = $this->convertBase64StringToBigInteger($this->values['d']);

            if (array_key_exists('p', $this->values) && array_key_exists('q', $this->values)) {
                $this->primes = [
                    $this->convertBase64StringToBigInteger($this->values['p']),
                    $this->convertBase64StringToBigInteger($this->values['q']),
                ];
                if (array_key_exists('dp', $this->values) && array_key_exists('dq', $this->values) && array_key_exists('qi', $this->values)) {
                    $this->exponents = [
                        $this->convertBase64StringToBigInteger($this->values['dp']),
                        $this->convertBase64StringToBigInteger($this->values['dq']),
                    ];
                    $this->coefficient = $this->convertBase64StringToBigInteger($this->values['qi']);
                }
            }
        }
    }

    /**
     * @param string $value
     *
     * @return BigInteger
     */
    private function convertBase64StringToBigInteger(string $value): BigInteger
    {
        return BigInteger::createFromBinaryString(Base64Url::decode($value));
    }

    /**
     * @return string
     */
    public function toPEM(): string
    {
        if (null === $this->sequence) {
            $this->sequence = new Sequence();
            if (array_key_exists('d', $this->values)) {
                $this->initPrivateKey();
            } else {
                $this->initPublicKey();
            }
        }
        $result = '-----BEGIN '.($this->private ? 'RSA PRIVATE' : 'PUBLIC').' KEY-----'.PHP_EOL;
        $result .= chunk_split(base64_encode($this->sequence->getBinary()), 64, PHP_EOL);
        $result .= '-----END '.($this->private ? 'RSA PRIVATE' : 'PUBLIC').' KEY-----'.PHP_EOL;

        return $result;
    }

    /**
     * @throws \Exception
     */
    private function initPublicKey()
    {
        $oid_sequence = new Sequence();
        $oid_sequence->addChild(new ObjectIdentifier('1.2.840.113549.1.1.1'));
        $oid_sequence->addChild(new NullObject());
        $this->sequence->addChild($oid_sequence);
        $n = new Integer($this->fromBase64ToInteger($this->values['n']));
        $e = new Integer($this->fromBase64ToInteger($this->values['e']));
        $key_sequence = new Sequence();
        $key_sequence->addChild($n);
        $key_sequence->addChild($e);
        $key_bit_string = new BitString(bin2hex($key_sequence->getBinary()));
        $this->sequence->addChild($key_bit_string);
    }
    private function initPrivateKey()
    {
        $this->sequence->addChild(new Integer(0));
        $oid_sequence = new Sequence();
        $oid_sequence->addChild(new ObjectIdentifier('1.2.840.113549.1.1.1'));
        $oid_sequence->addChild(new NullObject());
        $this->sequence->addChild($oid_sequence);
        $v = new Integer(0);
        $n = new Integer($this->fromBase64ToInteger($this->values['n']));
        $e = new Integer($this->fromBase64ToInteger($this->values['e']));
        $d = new Integer($this->fromBase64ToInteger($this->values['d']));
        $p = new Integer($this->fromBase64ToInteger($this->values['p']));
        $q = new Integer($this->fromBase64ToInteger($this->values['q']));
        $dp = array_key_exists('dp', $this->values) ? new Integer($this->fromBase64ToInteger($this->values['dp'])) : new Integer(0);
        $dq = array_key_exists('dq', $this->values) ? new Integer($this->fromBase64ToInteger($this->values['dq'])) : new Integer(0);
        $qi = array_key_exists('qi', $this->values) ? new Integer($this->fromBase64ToInteger($this->values['qi'])) : new Integer(0);
        $key_sequence = new Sequence();
        $key_sequence->addChild($v);
        $key_sequence->addChild($n);
        $key_sequence->addChild($e);
        $key_sequence->addChild($d);
        $key_sequence->addChild($p);
        $key_sequence->addChild($q);
        $key_sequence->addChild($dp);
        $key_sequence->addChild($dq);
        $key_sequence->addChild($qi);
        $key_octet_string = new OctetString(bin2hex($key_sequence->getBinary()));
        $this->sequence->addChild($key_octet_string);
    }

    /**
     * @param string $value
     *
     * @return string
     */
    private function fromBase64ToInteger($value)
    {
        return gmp_strval(gmp_init(current(unpack('H*', Base64Url::decode($value))), 16), 10);
    }
}


1			<?php
2
3			declare(strict_types=1);
4
5			/*
6			* The MIT License (MIT)
7			*
8			* Copyright (c) 2014-2017 Spomky-Labs
9			*
10			* This software may be modified and distributed under the terms
11			* of the MIT license. See the LICENSE file for details.
12			*/
13
14			namespace Jose\Component\Core\Util;
15
16			use Base64Url\Base64Url;
17			use FG\ASN1\Universal\BitString;
18			use FG\ASN1\Universal\Integer;
19			use FG\ASN1\Universal\NullObject;
20			use FG\ASN1\Universal\ObjectIdentifier;
21			use FG\ASN1\Universal\OctetString;
22			use FG\ASN1\Universal\Sequence;
23			use Jose\Component\Core\JWK;
24
25			final class RSAKey
26			{
27			/**
28			* @var Sequence
29			*/
30			private $sequence;
31
32			/**
33			* @var bool
34			*/
35			private $private = false;
36
37			/**
38			* @var array
39			*/
40			private $values = [];
41
42			/**
43			* @var BigInteger
44			*/
45			private $modulus;
46
47			/**
48			* @var int
49			*/
50			private $modulus_length;
51
52			/**
53			* @var BigInteger
54			*/
55			private $public_exponent;
56
57			/**
58			* @var BigInteger\|null
59			*/
60			private $private_exponent = null;
61
62			/**
63			* @var BigInteger[]
64			*/
65			private $primes = [];
66
67			/**
68			* @var BigInteger[]
69			*/
70			private $exponents = [];
71
72			/**
73			* @var BigInteger\|null
74			*/
75			private $coefficient = null;
76
77			/**
78			* @param JWK $data
79			*/
80			private function __construct(JWK $data)
81			{
82			$this->loadJWK($data->all());
83			$this->populateBigIntegers();
84			$this->private = array_key_exists('d', $this->values);
85			}
86
87			/**
88			* @param JWK $jwk
89			*
90			* @return RSAKey
91			*/
92			public static function createFromJWK(JWK $jwk): RSAKey
93			{
94			return new self($jwk);
95			}
96
97			/**
98			* @return BigInteger
99			*/
100			public function getModulus(): BigInteger
101			{
102			return $this->modulus;
103			}
104
105			/**
106			* @return int
107			*/
108			public function getModulusLength(): int
109			{
110			return $this->modulus_length;
111			}
112
113			/**
114			* @return BigInteger
115			*/
116			public function getExponent(): BigInteger
117			{
118			$d = $this->getPrivateExponent();
119			if (null !== $d) {
120			return $d;
121			}
122
123			return $this->getPublicExponent();
124			}
125
126			/**
127			* @return BigInteger
128			*/
129			public function getPublicExponent(): BigInteger
130			{
131			return $this->public_exponent;
132			}
133
134			/**
135			* @return BigInteger\|null
136			*/
137			public function getPrivateExponent(): ?BigInteger
138			{
139			return $this->private_exponent;
140			}
141
142			/**
143			* @return BigInteger[]
144			*/
145			public function getPrimes(): array
146			{
147			return $this->primes;
148			}
149
150			/**
151			* @return BigInteger[]
152			*/
153			public function getExponents(): array
154			{
155			return $this->exponents;
156			}
157
158			/**
159			* @return BigInteger\|null
160			*/
161			public function getCoefficient(): ?BigInteger
162			{
163			return $this->coefficient;
164			}
165
166			/**
167			* @return bool
168			*/
169			public function isPublic(): bool
170			{
171			return !array_key_exists('d', $this->values);
172			}
173
174			/**
175			* @param RSAKey $private
176			*
177			* @return RSAKey
178			*/
179			public static function toPublic(RSAKey $private): RSAKey
180			{
181			$data = $private->toArray();
182			$keys = ['p', 'd', 'q', 'dp', 'dq', 'qi'];
183			foreach ($keys as $key) {
184			if (array_key_exists($key, $data)) {
185			unset($data[$key]);
186			}
187			}
188
189			return new self(JWK::create($data));
190			}
191
192			/**
193			* @return array
194			*/
195			public function toArray(): array
196			{
197			return $this->values;
198			}
199
200			/**
201			* @param array $jwk
202			*/
203			private function loadJWK(array $jwk)
204			{
205			if (!array_key_exists('kty', $jwk)) {
206			throw new \InvalidArgumentException('The key parameter "kty" is missing.');
207			}
208			if ('RSA' !== $jwk['kty']) {
209			throw new \InvalidArgumentException('The JWK is not a RSA key.');
210			}
211
212			$this->values = $jwk;
213			}
214
215			private function populateBigIntegers()
216			{
217			$this->modulus = $this->convertBase64StringToBigInteger($this->values['n']);
218			$this->modulus_length = mb_strlen($this->getModulus()->toBytes(), '8bit');
219			$this->public_exponent = $this->convertBase64StringToBigInteger($this->values['e']);
220
221			if (!$this->isPublic()) {
222			$this->private_exponent = $this->convertBase64StringToBigInteger($this->values['d']);
223
224			if (array_key_exists('p', $this->values) && array_key_exists('q', $this->values)) {
225			$this->primes = [
226			$this->convertBase64StringToBigInteger($this->values['p']),
227			$this->convertBase64StringToBigInteger($this->values['q']),
228			];
229			if (array_key_exists('dp', $this->values) && array_key_exists('dq', $this->values) && array_key_exists('qi', $this->values)) {
230			$this->exponents = [
231			$this->convertBase64StringToBigInteger($this->values['dp']),
232			$this->convertBase64StringToBigInteger($this->values['dq']),
233			];
234			$this->coefficient = $this->convertBase64StringToBigInteger($this->values['qi']);
235			}
236			}
237			}
238			}
239
240			/**
241			* @param string $value
242			*
243			* @return BigInteger
244			*/
245			private function convertBase64StringToBigInteger(string $value): BigInteger
246			{
247			return BigInteger::createFromBinaryString(Base64Url::decode($value));
248			}
249
250			/**
251			* @return string
252			*/
253			public function toPEM(): string
254			{
255			if (null === $this->sequence) {
256			$this->sequence = new Sequence();
257			if (array_key_exists('d', $this->values)) {
258			$this->initPrivateKey();
259			} else {
260			$this->initPublicKey();
261			}
262			}
263			$result = '-----BEGIN '.($this->private ? 'RSA PRIVATE' : 'PUBLIC').' KEY-----'.PHP_EOL;
264			$result .= chunk_split(base64_encode($this->sequence->getBinary()), 64, PHP_EOL);
265			$result .= '-----END '.($this->private ? 'RSA PRIVATE' : 'PUBLIC').' KEY-----'.PHP_EOL;
266
267			return $result;
268			}
269
270			/**
271			* @throws \Exception
272			*/
273			private function initPublicKey()
274			{
275			$oid_sequence = new Sequence();
276			$oid_sequence->addChild(new ObjectIdentifier('1.2.840.113549.1.1.1'));
277			$oid_sequence->addChild(new NullObject());
278			$this->sequence->addChild($oid_sequence);
279			$n = new Integer($this->fromBase64ToInteger($this->values['n']));
280			$e = new Integer($this->fromBase64ToInteger($this->values['e']));
281			$key_sequence = new Sequence();
282			$key_sequence->addChild($n);
283			$key_sequence->addChild($e);
284			$key_bit_string = new BitString(bin2hex($key_sequence->getBinary()));
285			$this->sequence->addChild($key_bit_string);
286			}
287			private function initPrivateKey()
288			{
289			$this->sequence->addChild(new Integer(0));
290			$oid_sequence = new Sequence();
291			$oid_sequence->addChild(new ObjectIdentifier('1.2.840.113549.1.1.1'));
292			$oid_sequence->addChild(new NullObject());
293			$this->sequence->addChild($oid_sequence);
294			$v = new Integer(0);
295			$n = new Integer($this->fromBase64ToInteger($this->values['n']));
296			$e = new Integer($this->fromBase64ToInteger($this->values['e']));
297			$d = new Integer($this->fromBase64ToInteger($this->values['d']));
298			$p = new Integer($this->fromBase64ToInteger($this->values['p']));
299			$q = new Integer($this->fromBase64ToInteger($this->values['q']));
300			$dp = array_key_exists('dp', $this->values) ? new Integer($this->fromBase64ToInteger($this->values['dp'])) : new Integer(0);
301			$dq = array_key_exists('dq', $this->values) ? new Integer($this->fromBase64ToInteger($this->values['dq'])) : new Integer(0);
302			$qi = array_key_exists('qi', $this->values) ? new Integer($this->fromBase64ToInteger($this->values['qi'])) : new Integer(0);
303			$key_sequence = new Sequence();
304			$key_sequence->addChild($v);
305			$key_sequence->addChild($n);
306			$key_sequence->addChild($e);
307			$key_sequence->addChild($d);
308			$key_sequence->addChild($p);
309			$key_sequence->addChild($q);
310			$key_sequence->addChild($dp);
311			$key_sequence->addChild($dq);
312			$key_sequence->addChild($qi);
313			$key_octet_string = new OctetString(bin2hex($key_sequence->getBinary()));
314			$this->sequence->addChild($key_octet_string);
315			}
316
317			/**
318			* @param string $value
319			*
320			* @return string
321			*/
322			private function fromBase64ToInteger($value)
323			{
324			return gmp_strval(gmp_init(current(unpack('H*', Base64Url::decode($value))), 16), 10);
325			}
326			}
327

Spomky-Labs / jose

Push — v7 ( 6a6683...1d7ef8 )

RSAKey::initPrivateKey() B

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