PublicKey::tweakAdd() - Code Metrics - Inspection of "TransactionInterface: add getBaseSerialization & g..." - Bit-Wasp/bitcoin-php - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#446)

by thomas

created 2017-01-20 09:46 UTC

PublicKey::tweakAdd() A

↳ Parent: PublicKey

Complexity

Conditions	1
Paths	1

Size

Total Lines	6
Code Lines	4

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
eloc	4
nc	1
nop	1
dl	0
loc	6
ccs	4
cts	4
cp	1
crap	1
rs	9.4285
c	0
b	0
f	0

<?php

namespace BitWasp\Bitcoin\Crypto\EcAdapter\Impl\PhpEcc\Key;

use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\PhpEcc\Adapter\EcAdapter;
use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\PhpEcc\Serializer\Key\PublicKeySerializer;
use BitWasp\Bitcoin\Crypto\EcAdapter\Key\Key;
use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PublicKeyInterface;
use BitWasp\Bitcoin\Crypto\EcAdapter\Signature\SignatureInterface;
use BitWasp\Buffertools\BufferInterface;
use Mdanter\Ecc\Primitives\PointInterface;

class PublicKey extends Key implements PublicKeyInterface, \Mdanter\Ecc\Crypto\Key\PublicKeyInterface
{
    /**
     * @var EcAdapter
     */
    private $ecAdapter;

    /**
     * @var PointInterface
     */
    private $point;

    /**
     * @var string
     */
    private $prefix;

    /**
     * @var bool
     */
    private $compressed;

    /**
     * PublicKey constructor.
     * @param EcAdapter $ecAdapter
     * @param PointInterface $point
     * @param bool $compressed
     * @param string $prefix
     */
    public function __construct(
        EcAdapter $ecAdapter,
        PointInterface $point,
        $compressed = false,
        $prefix = null
    ) {
        if (false === is_bool($compressed)) {
            throw new \InvalidArgumentException('PublicKey: Compressed must be a boolean');
        }
        $this->ecAdapter = $ecAdapter;
        $this->point = $point;
        $this->prefix = $prefix;
        $this->compressed = $compressed;
    }

    /**
     * @return \Mdanter\Ecc\Primitives\GeneratorPoint
     */
    public function getGenerator()
    {
        return $this->ecAdapter->getGenerator();
    }

    /**
     * @return \Mdanter\Ecc\Primitives\CurveFpInterface
     */
    public function getCurve()
    {
        return $this->ecAdapter->getGenerator()->getCurve();
    }

    /**
     * @return string
     */
    public function getPrefix()
    {
        return $this->prefix;
    }

    /**
     * @return PointInterface
     */
    public function getPoint()
    {
        return $this->point;
    }

    /**
     * @param BufferInterface $msg32
     * @param SignatureInterface $signature
     * @return bool
     */
    public function verify(BufferInterface $msg32, SignatureInterface $signature)
    {
        return $this->ecAdapter->verify($msg32, $this, $signature);
    }

    /**
     * @param \GMP $tweak
     * @return PublicKeyInterface
     */
    public function tweakAdd(\GMP $tweak)
    {
        $offset = $this->ecAdapter->getGenerator()->mul($tweak);
        $newPoint = $this->point->add($offset);
        return $this->ecAdapter->getPublicKey($newPoint, $this->compressed);
    }

    /**
     * @param \GMP $tweak
     * @return PublicKeyInterface
     */
    public function tweakMul(\GMP $tweak)
    {
        $point = $this->point->mul($tweak);
        return $this->ecAdapter->getPublicKey($point, $this->compressed);
    }

    /**
     * @param BufferInterface $publicKey
     * @return bool
     */
    public static function isCompressedOrUncompressed(BufferInterface $publicKey)
    {
        $vchPubKey = $publicKey->getBinary();
        if ($publicKey->getSize() < self::LENGTH_COMPRESSED) {
            return false;
        }

        if ($vchPubKey[0] === self::KEY_UNCOMPRESSED) {
            if ($publicKey->getSize() !== self::LENGTH_UNCOMPRESSED) {
                // Invalid length for uncompressed key
                return false;
            }
        } elseif (in_array($vchPubKey[0], [
            self::KEY_COMPRESSED_EVEN,
            self::KEY_COMPRESSED_ODD
        ])) {
            if ($publicKey->getSize() !== self::LENGTH_COMPRESSED) {
                return false;
            }
        } else {
            return false;
        }

        return true;
    }

    /**
     * @return bool
     */
    public function isCompressed()
    {
        return $this->compressed;
    }

    /**
     * @param PublicKey $other
     * @return bool
     */
    private function doEquals(self $other)
    {
        return $this->compressed === $other->compressed
            && $this->point->equals($other->point)
            && (($this->prefix === null || $this->prefix === null) || ($this->prefix === $other->prefix));
    }

    /**
     * @param PublicKeyInterface $other
     * @return bool
     */
    public function equals(PublicKeyInterface $other)
    {
        /** @var self $other */
        return $this->doEquals($other);
function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
    }

    /**
     * @return BufferInterface
     */
    public function getBuffer()
    {
        return (new PublicKeySerializer($this->ecAdapter))->serialize($this);
    }
}


1		<?php
2
3		namespace BitWasp\Bitcoin\Crypto\EcAdapter\Impl\PhpEcc\Key;
4
5		use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\PhpEcc\Adapter\EcAdapter;
6		use BitWasp\Bitcoin\Crypto\EcAdapter\Impl\PhpEcc\Serializer\Key\PublicKeySerializer;
7		use BitWasp\Bitcoin\Crypto\EcAdapter\Key\Key;
8		use BitWasp\Bitcoin\Crypto\EcAdapter\Key\PublicKeyInterface;
9		use BitWasp\Bitcoin\Crypto\EcAdapter\Signature\SignatureInterface;
10		use BitWasp\Buffertools\BufferInterface;
11		use Mdanter\Ecc\Primitives\PointInterface;
12
13		class PublicKey extends Key implements PublicKeyInterface, \Mdanter\Ecc\Crypto\Key\PublicKeyInterface
14		{
15		/**
16		* @var EcAdapter
17		*/
18		private $ecAdapter;
19
20		/**
21		* @var PointInterface
22		*/
23		private $point;
24
25		/**
26		* @var string
27		*/
28		private $prefix;
29
30		/**
31		* @var bool
32		*/
33		private $compressed;
34
35		/**
36		* PublicKey constructor.
37		* @param EcAdapter $ecAdapter
38		* @param PointInterface $point
39		* @param bool $compressed
40		* @param string $prefix
41		*/
42	384	public function __construct(
43		EcAdapter $ecAdapter,
44		PointInterface $point,
45		$compressed = false,
46		$prefix = null
47		) {
48	384	if (false === is_bool($compressed)) {
49		throw new \InvalidArgumentException('PublicKey: Compressed must be a boolean');
50		}
51	384	$this->ecAdapter = $ecAdapter;
52	384	$this->point = $point;
53	384	$this->prefix = $prefix;
54	384	$this->compressed = $compressed;
55	384	}
56
57		/**
58		* @return \Mdanter\Ecc\Primitives\GeneratorPoint
59		*/
60	202	public function getGenerator()
61		{
62	202	return $this->ecAdapter->getGenerator();
63		}
64
65		/**
66		* @return \Mdanter\Ecc\Primitives\CurveFpInterface
67		*/
68		public function getCurve()
69		{
70		return $this->ecAdapter->getGenerator()->getCurve();
71		}
72
73		/**
74		* @return string
75		*/
76	218	public function getPrefix()
77		{
78	218	return $this->prefix;
79		}
80
81		/**
82		* @return PointInterface
83		*/
84	350	public function getPoint()
85		{
86	350	return $this->point;
87		}
88
89		/**
90		* @param BufferInterface $msg32
91		* @param SignatureInterface $signature
92		* @return bool
93		*/
94		public function verify(BufferInterface $msg32, SignatureInterface $signature)
95		{
96		return $this->ecAdapter->verify($msg32, $this, $signature);
97		}
98
99		/**
100		* @param \GMP $tweak
101		* @return PublicKeyInterface
102		*/
103	8	public function tweakAdd(\GMP $tweak)
104		{
105	8	$offset = $this->ecAdapter->getGenerator()->mul($tweak);
106	8	$newPoint = $this->point->add($offset);
107	8	return $this->ecAdapter->getPublicKey($newPoint, $this->compressed);
108		}
109
110		/**
111		* @param \GMP $tweak
112		* @return PublicKeyInterface
113		*/
114	2	public function tweakMul(\GMP $tweak)
115		{
116	2	$point = $this->point->mul($tweak);
117	2	return $this->ecAdapter->getPublicKey($point, $this->compressed);
118		}
119
120		/**
121		* @param BufferInterface $publicKey
122		* @return bool
123		*/
124	122	public static function isCompressedOrUncompressed(BufferInterface $publicKey)
125		{
126	122	$vchPubKey = $publicKey->getBinary();
127	122	if ($publicKey->getSize() < self::LENGTH_COMPRESSED) {
128	8	return false;
129		}
130
131	120	if ($vchPubKey[0] === self::KEY_UNCOMPRESSED) {
132	60	if ($publicKey->getSize() !== self::LENGTH_UNCOMPRESSED) {
133		// Invalid length for uncompressed key
134	36	return false;
135		}
136	90	} elseif (in_array($vchPubKey[0], [
137	66	self::KEY_COMPRESSED_EVEN,
138	33	self::KEY_COMPRESSED_ODD
139	33	])) {
140	58	if ($publicKey->getSize() !== self::LENGTH_COMPRESSED) {
141	32	return false;
142		}
143	29	} else {
144	14	return false;
145		}
146
147	106	return true;
148		}
149
150		/**
151		* @return bool
152		*/
153	250	public function isCompressed()
154		{
155	250	return $this->compressed;
156		}
157
158		/**
159		* @param PublicKey $other
160		* @return bool
161	218	*/
162		private function doEquals(self $other)
163	218	{
164		return $this->compressed === $other->compressed
165		&& $this->point->equals($other->point)
166		&& (($this->prefix === null \|\| $this->prefix === null) \|\| ($this->prefix === $other->prefix));
167		}
168
169		/**
170		* @param PublicKeyInterface $other
171		* @return bool
172		*/
173		public function equals(PublicKeyInterface $other)
174		{
175		/** @var self $other */
176		return $this->doEquals($other);
		0 ignored issues – show Documentation introduced 2017-01-18 15:19 UTC by Report Bug Copy Issue Report `$other` is of type `object<BitWasp\Bitcoin\C...l\PhpEcc\Key\PublicKey>`, but the function expects a `object<self>`. It seems like the type of the argument is not accepted by the function/method which you are calling. In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug. We suggest to add an explicit type cast like in the following example: function acceptsInteger($int) { } $x = '123'; // string "123" // Instead of acceptsInteger($x); // we recommend to use acceptsInteger((integer) $x); Loading history...
177		}
178
179		/**
180		* @return BufferInterface
181		*/
182		public function getBuffer()
183		{
184		return (new PublicKeySerializer($this->ecAdapter))->serialize($this);
185		}
186		}
187

Bit-Wasp / bitcoin-php

Pull Request — master (#446)

PublicKey::tweakAdd() A

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