KeyPairTrait::getPublicKey() - Code Metrics - Inspection of "Added unit tests for the new asymmetric encryption..." - TonyKaravasilev/CryptoManana - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( b8fcd2...ffbcb5 )

by Tony Karavasilev (Тони

created 2020-01-25 21:26 UTC

KeyPairTrait::getPublicKey() A

↳ Parent: KeyPairTrait

Complexity

Conditions	2
Paths	2

Size

Total Lines	3
Code Lines	1

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	2

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
eloc	1
c	1
b	0
f	0
dl	0
loc	3
ccs	2
cts	2
cp	1
rs	10
cc	2
nc	2
nop	0
crap	2

<?php

/**
 * Trait implementation of the public and private key pair capabilities for asymmetric encryption/signing algorithms.
 */

namespace CryptoManana\Core\Traits\MessageEncryption;

use \CryptoManana\Core\Interfaces\MessageEncryption\KeyPairInterface as KeyPairSpecification;

/**
 * Trait KeyPairTrait - Reusable implementation of `KeyPairInterface`.
 *
 * @see \CryptoManana\Core\Interfaces\MessageDigestion\KeyPairInterface The abstract specification.
 *
 * @package CryptoManana\Core\Traits\MessageEncryption
 *
 * @property string $privateKey The private key string property storage.
 * @property string $publicKey The public key string property storage.
 *
 * @mixin KeyPairSpecification
 */
trait KeyPairTrait
{
    /**
     * Internal method for the validation of the private key string representation format.
     *
     * @param string $privateKey The private key input string.
     *
     * @throws \Exception Validation errors.
     *
     * @internal The parameter is passed via reference from the main logical method for performance reasons.
     */
    protected function validatePrivateKeyFormat(&$privateKey)
    {
        if (!is_string($privateKey)) {
            throw new \InvalidArgumentException('The private key must be a string or a binary string.');
        }

        $isPrivateBase64String = (
            !empty($privateKey) && preg_match('%^[a-zA-Z0-9/+]*={0,2}$%', $privateKey) && strlen($privateKey) % 4 === 0
        );

        if (!$isPrivateBase64String) {
            throw new \InvalidArgumentException('The private key must be a valid Base64 formatted string.');
        }
    }

    /**
     * Internal method for the validation of the public key string representation format.
     *
     * @param string $publicKey The public key input string.
     *
     * @throws \Exception Validation errors.
     *
     * @internal The parameter is passed via reference from the main logical method for performance reasons.
     */
    protected function validatePublicKeyFormat(&$publicKey)
    {
        if (!is_string($publicKey)) {
            throw new \InvalidArgumentException('The public key must be a string or a binary string.');
        }

        $isPublicBase64String = (
            !empty($publicKey) && preg_match('%^[a-zA-Z0-9/+]*={0,2}$%', $publicKey) && strlen($publicKey) % 4 === 0
        );

        if (!$isPublicBase64String) {
            throw new \InvalidArgumentException('The public key must be a valid Base64 formatted string.');
        }
    }

    /**
     * Internal method for the validation of the private key resource.
     *
     * @param string $privateKey The private key input string.
     *
     * @return string The extracted public key string from the private key resource.
     * @throws \Exception Validation errors.
     *
     * @internal The parameter is passed via reference from the main logical method for performance reasons.
     *
     * @codeCoverageIgnore
     */
    protected function validatePrivateKeyResource(&$privateKey)
    {
        // Get the private key
        $privateKeyResource = openssl_pkey_get_private(base64_decode($privateKey));

        if ($privateKeyResource === false) {
            throw new \RuntimeException(
                'Failed to import the private key, probably because of ' .
                'a misconfigured OpenSSL library or an invalid key.'
            );
        }

        $privateKeyInformation = openssl_pkey_get_details($privateKeyResource);

        if ($privateKeyInformation === false) {
            throw new \RuntimeException(
                'Failed to export the key\'s information, probably because of a misconfigured ' .
                'OpenSSL library or an invalid private key.'
            );
        } elseif ($privateKeyInformation['bits'] !== static::KEY_SIZE) {
            throw new \DomainException('The private key is not of the correct size: `' . static::KEY_SIZE . '`.');
        }

        // Free the private key (resource cleanup)
        openssl_free_key($privateKeyResource);
        $privateKeyResource = null;

        return base64_encode((string)$privateKeyInformation['key']); // <- The extracted public key
    }

    /**
     * Internal method for the validation of the public key resource.
     *
     * @param string $publicKey The public key input string.
     *
     * @throws \Exception Validation errors.
     *
     * @internal The parameter is passed via reference from the main logical method for performance reasons.
     *
     * @codeCoverageIgnore
     */
    protected function validatePublicKeyResource(&$publicKey)
    {
        $publicKeyResource = openssl_pkey_get_public(base64_decode($publicKey));

        if ($publicKeyResource === false) {
            throw new \RuntimeException(
                'Failed to import the public key, probably because of ' .
                'a misconfigured OpenSSL library or an invalid key.'
            );
        }

        $publicKeyInformation = openssl_pkey_get_details($publicKeyResource);

        if ($publicKeyInformation === false) {
            throw new \RuntimeException(
                'Failed to export the key\'s information, probably because of a misconfigured ' .
                'OpenSSL library or an invalid public key.'
            );
        } elseif ($publicKeyInformation['bits'] !== static::KEY_SIZE) {
            throw new \DomainException('The public key is not of the correct size: `' . static::KEY_SIZE . '`.');
        }

        // Free the public key (resource cleanup)
        openssl_free_key($publicKeyResource);
        $publicKeyResource = null;
    }

    /**
     * Internal method for the validation of the private and public key pair string representations.
     *
     * @param string $privateKey The private key input string.
     * @param string $publicKey The public key input string.
     *
     * @throws \Exception Validation errors.
     */
    protected function validateKeyPair($privateKey, $publicKey)
    {
        $this->validatePrivateKeyFormat($privateKey);
        $this->validatePublicKeyFormat($publicKey);

        $extractedPublicKey = $this->validatePrivateKeyResource($privateKey);

        $this->validatePublicKeyResource($publicKey);

        // @codeCoverageIgnoreStart
        $thePairIsNotMatching = (
            strlen($extractedPublicKey) !== strlen($publicKey) ||
            substr($extractedPublicKey, -8) !== substr($extractedPublicKey, -8) ||
            hash('sha256', $extractedPublicKey) !== hash('sha256', $publicKey)
        );

        if ($thePairIsNotMatching) {
            throw new \RuntimeException('The private and public key pair are not matching and can not be used.');
        }
        // @codeCoverageIgnoreEnd
    }

    /**
     * Setter for the whole key pair as an array.
     *
     * @param string $privateKey The private key string.
     * @param string $publicKey The public key string.
     *
     * @return $this The encryption/signature algorithm object.
     * @throws \Exception Validation errors.
     */
    public function setKeyPair($privateKey, $publicKey)
    {
        $this->validateKeyPair($privateKey, $publicKey);

        // Set the key pair
        $this->privateKey = $privateKey;
        $this->publicKey = $publicKey;

        return $this;
    }

    /**
     * Getter for the whole key pair as an array.
     *
     * @param bool|int|null $asArray Flag for exporting as an array, instead of an object.
     *
     * @return \stdClass|array The private and public key pair as an object/array.
     */
    public function getKeyPair($asArray = false)
    {
        if ($asArray == true) {
            return [
                self::PRIVATE_KEY_INDEX_NAME => $this->privateKey,
                self::PUBLIC_KEY_INDEX_NAME => $this->publicKey
            ];
        } else {
            $object = new \stdClass();

            $object->{self::PRIVATE_KEY_INDEX_NAME} = $this->privateKey;
            $object->{self::PUBLIC_KEY_INDEX_NAME} = $this->publicKey;

            return $object;
        }
    }

    /**
     * Setter for the private key string property.
     *
     * @param string $privateKey The private key string.
     *
     * @return $this The encryption/signature algorithm object.
     * @throws \Exception Validation errors.
     */
    public function setPrivateKey($privateKey)
    {
        $this->validatePrivateKeyFormat($privateKey);
        $this->validatePrivateKeyResource($privateKey);

        // Set the key pair
        $this->privateKey = $privateKey;

        return $this;
    }

    /**
     * Getter for the private key string property.
     *
     * @return string The private key string.
     */
    public function getPrivateKey()
    {
        return ($this->privateKey !== '') ? $this->privateKey : null;
    }

    /**
     * Setter for the public key string property.
     *
     * @param string $publicKey The public key string.
     *
     * @return $this The encryption/signature algorithm object.
     * @throws \Exception Validation errors.
     */
    public function setPublicKey($publicKey)
    {
        $this->validatePublicKeyFormat($publicKey);
        $this->validatePublicKeyResource($publicKey);

        // Set the key pair
        $this->publicKey = $publicKey;

        return $this;
    }

    /**
     * Getter for the public key string property.
     *
     * @return string The public key string.
     */
    public function getPublicKey()
    {
        return ($this->publicKey !== '') ? $this->publicKey : null;
    }

    /**
     * Checks if the private key is present.
     *
     * @throws \Exception If there is no private key set.
     */
    public function checkIfThePrivateKeyIsSet()
    {
        if ($this->privateKey === '') {
            throw new \RuntimeException('There is no private key set, please generate or import your key pair.');
        }
    }

    /**
     * Checks if the public key is present.
     *
     * @throws \Exception If there is no public key set.
     */
    public function checkIfThePublicKeyIsSet()
    {
        if ($this->publicKey === '') {
            throw new \RuntimeException('There is no public key set, please generate or import your key pair.');
        }
    }
}


1		<?php
2
3		/**
4		* Trait implementation of the public and private key pair capabilities for asymmetric encryption/signing algorithms.
5		*/
6
7		namespace CryptoManana\Core\Traits\MessageEncryption;
8
9		use \CryptoManana\Core\Interfaces\MessageEncryption\KeyPairInterface as KeyPairSpecification;
10
11		/**
12		* Trait KeyPairTrait - Reusable implementation of `KeyPairInterface`.
13		*
14		* @see \CryptoManana\Core\Interfaces\MessageDigestion\KeyPairInterface The abstract specification.
15		*
16		* @package CryptoManana\Core\Traits\MessageEncryption
17		*
18		* @property string $privateKey The private key string property storage.
19		* @property string $publicKey The public key string property storage.
20		*
21		* @mixin KeyPairSpecification
22		*/
23		trait KeyPairTrait
24		{
25		/**
26		* Internal method for the validation of the private key string representation format.
27		*
28		* @param string $privateKey The private key input string.
29		*
30		* @throws \Exception Validation errors.
31		*
32		* @internal The parameter is passed via reference from the main logical method for performance reasons.
33		*/
34	288	protected function validatePrivateKeyFormat(&$privateKey)
35		{
36	288	if (!is_string($privateKey)) {
37	8	throw new \InvalidArgumentException('The private key must be a string or a binary string.');
38		}
39
40		$isPrivateBase64String = (
41	288	!empty($privateKey) && preg_match('%^[a-zA-Z0-9/+]*={0,2}$%', $privateKey) && strlen($privateKey) % 4 === 0
42		);
43
44	288	if (!$isPrivateBase64String) {
45	8	throw new \InvalidArgumentException('The private key must be a valid Base64 formatted string.');
46		}
47	288	}
48
49		/**
50		* Internal method for the validation of the public key string representation format.
51		*
52		* @param string $publicKey The public key input string.
53		*
54		* @throws \Exception Validation errors.
55		*
56		* @internal The parameter is passed via reference from the main logical method for performance reasons.
57		*/
58	288	protected function validatePublicKeyFormat(&$publicKey)
59		{
60	288	if (!is_string($publicKey)) {
61	8	throw new \InvalidArgumentException('The public key must be a string or a binary string.');
62		}
63
64		$isPublicBase64String = (
65	288	!empty($publicKey) && preg_match('%^[a-zA-Z0-9/+]*={0,2}$%', $publicKey) && strlen($publicKey) % 4 === 0
66		);
67
68	288	if (!$isPublicBase64String) {
69	8	throw new \InvalidArgumentException('The public key must be a valid Base64 formatted string.');
70		}
71	288	}
72
73		/**
74		* Internal method for the validation of the private key resource.
75		*
76		* @param string $privateKey The private key input string.
77		*
78		* @return string The extracted public key string from the private key resource.
79		* @throws \Exception Validation errors.
80		*
81		* @internal The parameter is passed via reference from the main logical method for performance reasons.
82		*
83		* @codeCoverageIgnore
84		*/
85		protected function validatePrivateKeyResource(&$privateKey)
86		{
87		// Get the private key
88		$privateKeyResource = openssl_pkey_get_private(base64_decode($privateKey));
89
90		if ($privateKeyResource === false) {
91		throw new \RuntimeException(
92		'Failed to import the private key, probably because of ' .
93		'a misconfigured OpenSSL library or an invalid key.'
94		);
95		}
96
97		$privateKeyInformation = openssl_pkey_get_details($privateKeyResource);
98
99		if ($privateKeyInformation === false) {
100		throw new \RuntimeException(
101		'Failed to export the key\'s information, probably because of a misconfigured ' .
102		'OpenSSL library or an invalid private key.'
103		);
104		} elseif ($privateKeyInformation['bits'] !== static::KEY_SIZE) {
105		throw new \DomainException('The private key is not of the correct size: `' . static::KEY_SIZE . '`.');
106		}
107
108		// Free the private key (resource cleanup)
109		openssl_free_key($privateKeyResource);
110		$privateKeyResource = null;
111
112		return base64_encode((string)$privateKeyInformation['key']); // <- The extracted public key
113		}
114
115		/**
116		* Internal method for the validation of the public key resource.
117		*
118		* @param string $publicKey The public key input string.
119		*
120		* @throws \Exception Validation errors.
121		*
122		* @internal The parameter is passed via reference from the main logical method for performance reasons.
123		*
124		* @codeCoverageIgnore
125		*/
126		protected function validatePublicKeyResource(&$publicKey)
127		{
128		$publicKeyResource = openssl_pkey_get_public(base64_decode($publicKey));
129
130		if ($publicKeyResource === false) {
131		throw new \RuntimeException(
132		'Failed to import the public key, probably because of ' .
133		'a misconfigured OpenSSL library or an invalid key.'
134		);
135		}
136
137		$publicKeyInformation = openssl_pkey_get_details($publicKeyResource);
138
139		if ($publicKeyInformation === false) {
140		throw new \RuntimeException(
141		'Failed to export the key\'s information, probably because of a misconfigured ' .
142		'OpenSSL library or an invalid public key.'
143		);
144		} elseif ($publicKeyInformation['bits'] !== static::KEY_SIZE) {
145		throw new \DomainException('The public key is not of the correct size: `' . static::KEY_SIZE . '`.');
146		}
147
148		// Free the public key (resource cleanup)
149		openssl_free_key($publicKeyResource);
150		$publicKeyResource = null;
151		}
152
153		/**
154		* Internal method for the validation of the private and public key pair string representations.
155		*
156		* @param string $privateKey The private key input string.
157		* @param string $publicKey The public key input string.
158		*
159		* @throws \Exception Validation errors.
160		*/
161	288	protected function validateKeyPair($privateKey, $publicKey)
162		{
163	288	$this->validatePrivateKeyFormat($privateKey);
164	288	$this->validatePublicKeyFormat($publicKey);
165
166	288	$extractedPublicKey = $this->validatePrivateKeyResource($privateKey);
167
168	288	$this->validatePublicKeyResource($publicKey);
169
170		// @codeCoverageIgnoreStart
171		$thePairIsNotMatching = (
172		strlen($extractedPublicKey) !== strlen($publicKey) \|\|
173		substr($extractedPublicKey, -8) !== substr($extractedPublicKey, -8) \|\|
174		hash('sha256', $extractedPublicKey) !== hash('sha256', $publicKey)
175		);
176
177		if ($thePairIsNotMatching) {
178		throw new \RuntimeException('The private and public key pair are not matching and can not be used.');
179		}
180		// @codeCoverageIgnoreEnd
181	288	}
182
183		/**
184		* Setter for the whole key pair as an array.
185		*
186		* @param string $privateKey The private key string.
187		* @param string $publicKey The public key string.
188		*
189		* @return $this The encryption/signature algorithm object.
190		* @throws \Exception Validation errors.
191		*/
192	288	public function setKeyPair($privateKey, $publicKey)
193		{
194	288	$this->validateKeyPair($privateKey, $publicKey);
195
196		// Set the key pair
197	288	$this->privateKey = $privateKey;
198	288	$this->publicKey = $publicKey;
199
200	288	return $this;
201		}
202
203		/**
204		* Getter for the whole key pair as an array.
205		*
206		* @param bool\|int\|null $asArray Flag for exporting as an array, instead of an object.
207		*
208		* @return \stdClass\|array The private and public key pair as an object/array.
209		*/
210	8	public function getKeyPair($asArray = false)
211		{
212	8	if ($asArray == true) {
213		return [
214	8	self::PRIVATE_KEY_INDEX_NAME => $this->privateKey,
215	8	self::PUBLIC_KEY_INDEX_NAME => $this->publicKey
216		];
217		} else {
218	8	$object = new \stdClass();
219
220	8	$object->{self::PRIVATE_KEY_INDEX_NAME} = $this->privateKey;
221	8	$object->{self::PUBLIC_KEY_INDEX_NAME} = $this->publicKey;
222
223	8	return $object;
224		}
225		}
226
227		/**
228		* Setter for the private key string property.
229		*
230		* @param string $privateKey The private key string.
231		*
232		* @return $this The encryption/signature algorithm object.
233		* @throws \Exception Validation errors.
234		*/
235	16	public function setPrivateKey($privateKey)
236		{
237	16	$this->validatePrivateKeyFormat($privateKey);
238	16	$this->validatePrivateKeyResource($privateKey);
239
240		// Set the key pair
241	16	$this->privateKey = $privateKey;
242
243	16	return $this;
244		}
245
246		/**
247		* Getter for the private key string property.
248		*
249		* @return string The private key string.
250		*/
251	24	public function getPrivateKey()
252		{
253	24	return ($this->privateKey !== '') ? $this->privateKey : null;
254		}
255
256		/**
257		* Setter for the public key string property.
258		*
259		* @param string $publicKey The public key string.
260		*
261		* @return $this The encryption/signature algorithm object.
262		* @throws \Exception Validation errors.
263		*/
264	16	public function setPublicKey($publicKey)
265		{
266	16	$this->validatePublicKeyFormat($publicKey);
267	16	$this->validatePublicKeyResource($publicKey);
268
269		// Set the key pair
270	16	$this->publicKey = $publicKey;
271
272	16	return $this;
273		}
274
275		/**
276		* Getter for the public key string property.
277		*
278		* @return string The public key string.
279		*/
280	24	public function getPublicKey()
281		{
282	24	return ($this->publicKey !== '') ? $this->publicKey : null;
283		}
284
285		/**
286		* Checks if the private key is present.
287		*
288		* @throws \Exception If there is no private key set.
289		*/
290	128	public function checkIfThePrivateKeyIsSet()
291		{
292	128	if ($this->privateKey === '') {
293	8	throw new \RuntimeException('There is no private key set, please generate or import your key pair.');
294		}
295	120	}
296
297		/**
298		* Checks if the public key is present.
299		*
300		* @throws \Exception If there is no public key set.
301		*/
302	168	public function checkIfThePublicKeyIsSet()
303		{
304	168	if ($this->publicKey === '') {
305	8	throw new \RuntimeException('There is no public key set, please generate or import your key pair.');
306		}
307	160	}
308		}
309

TonyKaravasilev / CryptoManana

Push — master ( b8fcd2...ffbcb5 )

KeyPairTrait::getPublicKey() A

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