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<?php |
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namespace kalanis\kw_auth\Methods; |
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use kalanis\kw_address_handler\Handler; |
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use kalanis\kw_auth\Interfaces\IAuthCert; |
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/** |
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* Class UrlHash |
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* @package kalanis\kw_auth\AuthMethods |
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* Authenticate via hashed values |
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* |
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* query: |
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* //dummy/u:whoami/?pass=asdf123ghjk456×tamp=123456&digest=poiuztrewq |
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* |
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* makes following call: |
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* hash($algorithm = <md5 | sha256 | ...> , $key = 'mnbvcx987' . $data = '//dummy/u:whoami/?pass=asdf123ghjk456×tamp=123456&salt=789' , $signature = 'poiuztrewq' |
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* |
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* - it removed digest value and added locally stored salt |
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*/ |
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class UrlHash extends AMethods |
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{ |
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use TStamp; |
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const INPUT_NAME = 'name'; |
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const INPUT_NAME2 = 'user'; |
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const INPUT_STAMP = 'timestamp'; |
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const INPUT_DIGEST = 'digest'; |
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const INPUT_SALT = 'salt'; |
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/** @var IAuthCert */ |
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protected $authenticator; |
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/** @var Handler */ |
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protected $uriHandler = null; |
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/** @var string */ |
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protected $algorithm = ''; |
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/** |
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* @param IAuthCert $authenticator |
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* @param AMethods|null $nextOne |
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* @param Handler $uriHandler |
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* @param string $algorithm for hash function |
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* @link https://php.net/manual/en/function.hash.php |
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*/ |
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public function __construct(IAuthCert $authenticator, ?AMethods $nextOne, Handler $uriHandler, string $algorithm) |
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{ |
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parent::__construct($authenticator, $nextOne); |
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$this->uriHandler = $uriHandler; |
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$this->algorithm = $algorithm; |
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} |
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public function process(\ArrayAccess $credentials): void |
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{ |
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$name = $credentials->offsetExists(static::INPUT_NAME) ? strval($credentials->offsetGet(static::INPUT_NAME)) : '' ; |
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$name = $credentials->offsetExists(static::INPUT_NAME2) ? strval($credentials->offsetGet(static::INPUT_NAME2) ): $name ; |
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$stamp = $credentials->offsetExists(static::INPUT_STAMP) ? intval(strval($credentials->offsetGet(static::INPUT_STAMP))) : 0 ; |
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$wantedUser = $this->authenticator->getCertData(strval($name)); |
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if ($wantedUser && !empty($stamp) && $this->checkStamp($stamp)) { |
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// now we have private salt from our storage, so it's time to check it |
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// digest out, salt in |
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1 |
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$digest = strval($this->uriHandler->getParams()->offsetGet(static::INPUT_DIGEST)); |
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$this->uriHandler->getParams()->offsetUnset(static::INPUT_DIGEST); |
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$this->uriHandler->getParams()->offsetSet(static::INPUT_SALT, $wantedUser->getPubSalt()); |
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$data = strval($this->uriHandler->getAddress()); |
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// verify |
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if (hash($this->algorithm, $wantedUser->getPubKey() . $data) == $digest) { |
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// OK |
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$this->loggedUser = $wantedUser; |
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} |
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} |
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} |
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public function remove(): void |
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{ |
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} |
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} |
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alex-kalanis /
kw_auth
