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<?php |
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/** |
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* The hash algorithm abstraction specification. |
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*/ |
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namespace CryptoManana\Core\Abstractions\MessageDigestion; |
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use \CryptoManana\Core\Interfaces\MessageDigestion\SaltingCapabilitiesInterface as DataSalting; |
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use \CryptoManana\Core\Interfaces\MessageDigestion\DigestionFormatsInterface as DigestFormatting; |
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use \CryptoManana\Core\Traits\MessageDigestion\SaltingCapabilitiesTrait as SaltingCapabilities; |
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use \CryptoManana\Core\Traits\MessageDigestion\DigestionFormatsTrait as DigestOutputFormats; |
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/** |
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* Class AbstractHashAlgorithm - The hash algorithm abstraction representation. |
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* |
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* @package CryptoManana\Core\Abstractions\MessageDigestion |
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* |
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* @mixin SaltingCapabilities |
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* @mixin DigestOutputFormats |
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*/ |
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abstract class AbstractHashAlgorithm implements DataSalting, DigestFormatting |
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{ |
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/** |
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* Data salting capabilities. |
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* |
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* {@internal Reusable implementation of `SaltingCapabilitiesInterface`. }} |
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*/ |
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use SaltingCapabilities; |
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/** |
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* Digest outputting formats. |
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* |
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* {@internal Reusable implementation of `DigestionFormatsInterface`. }} |
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*/ |
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use DigestOutputFormats; |
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/** |
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* The salt string property storage. |
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* |
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* @var string The salting string value. |
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*/ |
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protected $salt = ''; |
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/** |
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* The salting mode property storage. |
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* |
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* @var int The salting mode integer code value. |
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*/ |
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protected $saltingMode = self::SALTING_MODE_APPEND; |
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/** |
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* The digest output format property storage. |
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* |
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* @var int The output format integer code value. |
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*/ |
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protected $digestFormat = self::DIGEST_OUTPUT_HEX_UPPER; |
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/** |
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* Internal method for adding the salt string to the input data via the chosen salting mode. |
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* |
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* @param string $data The input data for hashing. |
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* |
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* @return string The input data with proper salting. |
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*/ |
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protected function addSaltString($data) |
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{ |
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switch ($this->saltingMode) { |
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case self::SALTING_MODE_APPEND: // passwordSALT |
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$data .= $this->salt; |
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break; |
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case self::SALTING_MODE_PREPEND: // SALTpassword |
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$data = $this->salt . $data; |
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break; |
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case self::SALTING_MODE_INFIX_INPUT: // SALTpasswordTLAS |
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$data = $this->salt . $data . strrev($this->salt); |
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break; |
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case self::SALTING_MODE_INFIX_SALT: // passwordSALTdrowssap |
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$data = $data . $this->salt . strrev($data); |
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break; |
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case self::SALTING_MODE_REVERSE_APPEND: // passwordTLAS |
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$data .= strrev($this->salt); |
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break; |
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case self::SALTING_MODE_REVERSE_PREPEND: // TLASpassword |
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$data = strrev($this->salt) . $data; |
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break; |
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case self::SALTING_MODE_DUPLICATE_SUFFIX: // passwordSALTTLAS |
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$data = $data . $this->salt . strrev($this->salt); |
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break; |
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case self::SALTING_MODE_DUPLICATE_PREFIX: // SALTTLASpassword |
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$data = $this->salt . strrev($this->salt) . $data; |
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break; |
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case self::SALTING_MODE_PALINDROME_MIRRORING: // SALTpassworddrowssapTLAS |
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$data = $this->salt . $data . strrev($data) . strrev($this->salt); |
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break; |
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default: // case self::SALTING_MODE_NONE: |
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break; |
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} |
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return $data; |
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} |
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/** |
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* Hash algorithm constructor. |
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*/ |
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abstract public function __construct(); |
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/** |
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* Calculates a hash value for the given data. |
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* |
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* @param string $data The input string. |
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* |
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* @return string The digest. |
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* @throws \Exception Validation errors. |
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*/ |
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abstract public function hashData($data); |
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} |
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TonyKaravasilev /
CryptoManana
