X509\AttributeCertificate\AttributeCertificateInfo

Complexity

Total Complexity

38

Size/Duplication

Total Lines	434
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	13

Test Coverage

Coverage

100%

Importance

Changes

0

25 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	9	1
A	hasSerialNumber()	0	3	1
A	hasIssuerUniqueID()	0	3	1
A	withIssuer()	0	5	1
A	withHolder()	0	5	1
A	hasSignature()	0	3	1
A	signature()	0	6	2
A	withExtensions()	0	5	1
A	holder()	0	3	1
A	withSignature()	0	5	1
A	withSerialNumber()	0	5	1
A	attributes()	0	3	1
A	withAdditionalExtensions()	0	5	1
A	withValidity()	0	5	1
A	withAttributes()	0	5	1
A	toASN1()	0	14	3
A	validityPeriod()	0	3	1
A	fromASN1()	0	29	5
A	issuer()	0	3	1
A	issuerUniqueID()	0	6	2
A	extensions()	0	3	1
A	withIssuerUniqueID()	0	5	1
A	withRandomSerialNumber()	0	9	2
A	version()	0	3	1
A	serialNumber()	0	6	2

<?php

declare(strict_types = 1);

namespace Sop\X509\AttributeCertificate;

use Sop\ASN1\Element;
use Sop\ASN1\Type\Constructed\Sequence;
use Sop\ASN1\Type\Primitive\Integer;
use Sop\CryptoBridge\Crypto;
use Sop\CryptoTypes\AlgorithmIdentifier\AlgorithmIdentifier;
use Sop\CryptoTypes\AlgorithmIdentifier\Feature\SignatureAlgorithmIdentifier;
use Sop\CryptoTypes\Asymmetric\PrivateKeyInfo;
use Sop\X509\Certificate\Extension\Extension;
use Sop\X509\Certificate\Extensions;
use Sop\X509\Certificate\UniqueIdentifier;

/**
 * Implements *AttributeCertificateInfo* ASN.1 type.
 *
 * @see https://tools.ietf.org/html/rfc5755#section-4.1
 */
class AttributeCertificateInfo
{
    const VERSION_2 = 1;

    /**
     * AC version.
     *
     * @var int
     */
    protected $_version;

    /**
     * AC holder.
     *
     * @var Holder
     */
    protected $_holder;

    /**
     * AC issuer.
     *
     * @var AttCertIssuer
     */
    protected $_issuer;

    /**
     * Signature algorithm identifier.
     *
     * @var SignatureAlgorithmIdentifier
     */
    protected $_signature;

    /**
     * AC serial number as a base 10 integer.
     *
     * @var string
     */
    protected $_serialNumber;

    /**
     * Validity period.
     *
     * @var AttCertValidityPeriod
     */
    protected $_attrCertValidityPeriod;

    /**
     * Attributes.
     *
     * @var Attributes
     */
    protected $_attributes;

    /**
     * Issuer unique identifier.
     *
     * @var null|UniqueIdentifier
     */
    protected $_issuerUniqueID;

    /**
     * Extensions.
     *
     * @var Extensions
     */
    protected $_extensions;

    /**
     * Constructor.
     *
     * @param Holder                $holder   AC holder
     * @param AttCertIssuer         $issuer   AC issuer
     * @param AttCertValidityPeriod $validity Validity
     * @param Attributes            $attribs  Attributes
     */
    public function __construct(Holder $holder, AttCertIssuer $issuer,
        AttCertValidityPeriod $validity, Attributes $attribs)
    {
        $this->_version = self::VERSION_2;
        $this->_holder = $holder;
        $this->_issuer = $issuer;
        $this->_attrCertValidityPeriod = $validity;
        $this->_attributes = $attribs;
        $this->_extensions = new Extensions();
    }

    /**
     * Initialize from ASN.1.
     *
     * @param Sequence $seq
     *
     * @throws \UnexpectedValueException
     *
     * @return self
     */
    public static function fromASN1(Sequence $seq): self
    {
        $idx = 0;
        $version = $seq->at($idx++)->asInteger()->intNumber();
        if (self::VERSION_2 !== $version) {
            throw new \UnexpectedValueException('Version must be 2.');
        }
        $holder = Holder::fromASN1($seq->at($idx++)->asSequence());
        $issuer = AttCertIssuer::fromASN1($seq->at($idx++));
        $signature = AlgorithmIdentifier::fromASN1($seq->at($idx++)->asSequence());
        if (!$signature instanceof SignatureAlgorithmIdentifier) {
            throw new \UnexpectedValueException(
                'Unsupported signature algorithm ' . $signature->oid() . '.');
        }
        $serial = $seq->at($idx++)->asInteger()->number();
        $validity = AttCertValidityPeriod::fromASN1($seq->at($idx++)->asSequence());
        $attribs = Attributes::fromASN1($seq->at($idx++)->asSequence());
        $obj = new self($holder, $issuer, $validity, $attribs);
        $obj->_signature = $signature;
        $obj->_serialNumber = $serial;
        if ($seq->has($idx, Element::TYPE_BIT_STRING)) {
            $obj->_issuerUniqueID = UniqueIdentifier::fromASN1(
                $seq->at($idx++)->asBitString());
        }
        if ($seq->has($idx, Element::TYPE_SEQUENCE)) {
            $obj->_extensions = Extensions::fromASN1(
                $seq->at($idx++)->asSequence());
        }
        return $obj;
    }

    /**
     * Get self with holder.
     *
     * @param Holder $holder
     *
     * @return self
     */
    public function withHolder(Holder $holder): self
    {
        $obj = clone $this;
        $obj->_holder = $holder;
        return $obj;
    }

    /**
     * Get self with issuer.
     *
     * @param AttCertIssuer $issuer
     *
     * @return self
     */
    public function withIssuer(AttCertIssuer $issuer): self
    {
        $obj = clone $this;
        $obj->_issuer = $issuer;
        return $obj;
    }

    /**
     * Get self with signature algorithm identifier.
     *
     * @param SignatureAlgorithmIdentifier $algo
     *
     * @return self
     */
    public function withSignature(SignatureAlgorithmIdentifier $algo): self
    {
        $obj = clone $this;
        $obj->_signature = $algo;
        return $obj;
    }

    /**
     * Get self with serial number.
     *
     * @param int|string $serial Base 10 serial number
     *
     * @return self
     */
    public function withSerialNumber($serial): self
    {
        $obj = clone $this;
        $obj->_serialNumber = strval($serial);
        return $obj;
    }

    /**
     * Get self with random positive serial number.
     *
     * @param int $size Number of random bytes
     *
     * @return self
     */
    public function withRandomSerialNumber(int $size = 16): self
    {
        // ensure that first byte is always non-zero and having first bit unset
        $num = gmp_init(mt_rand(1, 0x7f), 10);
        for ($i = 1; $i < $size; ++$i) {
            $num <<= 8;
            $num += mt_rand(0, 0xff);
        }
        return $this->withSerialNumber(gmp_strval($num, 10));
    }

    /**
     * Get self with validity period.
     *
     * @param AttCertValidityPeriod $validity
     *
     * @return self
     */
    public function withValidity(AttCertValidityPeriod $validity): self
    {
        $obj = clone $this;
        $obj->_attrCertValidityPeriod = $validity;
        return $obj;
    }

    /**
     * Get self with attributes.
     *
     * @param Attributes $attribs
     *
     * @return self
     */
    public function withAttributes(Attributes $attribs): self
    {
        $obj = clone $this;
        $obj->_attributes = $attribs;
        return $obj;
    }

    /**
     * Get self with issuer unique identifier.
     *
     * @param UniqueIdentifier $uid
     *
     * @return self
     */
    public function withIssuerUniqueID(UniqueIdentifier $uid): self
    {
        $obj = clone $this;
        $obj->_issuerUniqueID = $uid;
        return $obj;
    }

    /**
     * Get self with extensions.
     *
     * @param Extensions $extensions
     *
     * @return self
     */
    public function withExtensions(Extensions $extensions): self
    {
        $obj = clone $this;
        $obj->_extensions = $extensions;
        return $obj;
    }

    /**
     * Get self with extensions added.
     *
     * @param Extension ...$exts One or more Extension objects
     *
     * @return self
     */
    public function withAdditionalExtensions(Extension ...$exts): self
    {
        $obj = clone $this;
        $obj->_extensions = $obj->_extensions->withExtensions(...$exts);
        return $obj;
    }

    /**
     * Get version.
     *
     * @return int
     */
    public function version(): int
    {
        return $this->_version;
    }

    /**
     * Get AC holder.
     *
     * @return Holder
     */
    public function holder(): Holder
    {
        return $this->_holder;
    }

    /**
     * Get AC issuer.
     *
     * @return AttCertIssuer
     */
    public function issuer(): AttCertIssuer
    {
        return $this->_issuer;
    }

    /**
     * Check whether signature is set.
     *
     * @return bool
     */
    public function hasSignature(): bool
    {
        return isset($this->_signature);
    }

    /**
     * Get signature algorithm identifier.
     *
     * @throws \LogicException If not set
     *
     * @return SignatureAlgorithmIdentifier
     */
    public function signature(): SignatureAlgorithmIdentifier
    {
        if (!$this->hasSignature()) {
            throw new \LogicException('signature not set.');
        }
        return $this->_signature;
    }

    /**
     * Check whether serial number is present.
     *
     * @return bool
     */
    public function hasSerialNumber(): bool
    {
        return isset($this->_serialNumber);
    }

    /**
     * Get AC serial number as a base 10 integer.
     *
     * @throws \LogicException If not set
     *
     * @return string
     */
    public function serialNumber(): string
    {
        if (!$this->hasSerialNumber()) {
            throw new \LogicException('serialNumber not set.');
        }
        return $this->_serialNumber;
    }

    /**
     * Get validity period.
     *
     * @return AttCertValidityPeriod
     */
    public function validityPeriod(): AttCertValidityPeriod
    {
        return $this->_attrCertValidityPeriod;
    }

    /**
     * Get attributes.
     *
     * @return Attributes
     */
    public function attributes(): Attributes
    {
        return $this->_attributes;
    }

    /**
     * Check whether issuer unique identifier is present.
     *
     * @return bool
     */
    public function hasIssuerUniqueID(): bool
    {
        return isset($this->_issuerUniqueID);
    }

    /**
     * Get issuer unique identifier.
     *
     * @throws \LogicException If not set
     *
     * @return UniqueIdentifier
     */
    public function issuerUniqueID(): UniqueIdentifier
    {
        if (!$this->hasIssuerUniqueID()) {
            throw new \LogicException('issuerUniqueID not set.');
        }
        return $this->_issuerUniqueID;
    }

    /**
     * Get extensions.
     *
     * @return Extensions
     */
    public function extensions(): Extensions
    {
        return $this->_extensions;
    }

    /**
     * Get ASN.1 structure.
     *
     * @return Sequence
     */
    public function toASN1(): Sequence
    {
        $elements = [new Integer($this->_version), $this->_holder->toASN1(),
            $this->_issuer->toASN1(), $this->signature()->toASN1(),
            new Integer($this->serialNumber()),
            $this->_attrCertValidityPeriod->toASN1(),
            $this->_attributes->toASN1(), ];
        if (isset($this->_issuerUniqueID)) {
            $elements[] = $this->_issuerUniqueID->toASN1();
        }
        if (count($this->_extensions)) {
            $elements[] = $this->_extensions->toASN1();
        }
        return new Sequence(...$elements);
    }

    /**
     * Create signed attribute certificate.
     *
     * @param SignatureAlgorithmIdentifier $algo         Signature algorithm
     * @param PrivateKeyInfo               $privkey_info Private key
     * @param null|Crypto                  $crypto       Crypto engine, use default if not set
     *
     * @return AttributeCertificate
     */
    public function sign(SignatureAlgorithmIdentifier $algo,
        PrivateKeyInfo $privkey_info, ?Crypto $crypto = null): AttributeCertificate
    {
        $crypto = $crypto ?? Crypto::getDefault();
        $aci = clone $this;
        if (!isset($aci->_serialNumber)) {
            $aci->_serialNumber = '0';
        }
        $aci->_signature = $algo;
        $data = $aci->toASN1()->toDER();
        $signature = $crypto->sign($data, $privkey_info, $algo);
        return new AttributeCertificate($aci, $algo, $signature);
    }
}