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<?php |
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namespace LeKoala\Encrypt; |
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use ParagonIE\CipherSweet\BlindIndex; |
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use ParagonIE\CipherSweet\CipherSweet; |
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use ParagonIE\CipherSweet\EncryptedField; |
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use ParagonIE\CipherSweet\Transformation\LastFourDigits; |
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/** |
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* Value will be set on parent record through built in getField |
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* mechanisms for composite fields |
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* |
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* This can be useful to store phone numbers, national numbers... |
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* We keep two indexes: |
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* - One with the full record |
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* - One with the last 4 numbers (so if your phone number is +00 471 123 456, it will be searchable with 3456) |
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*/ |
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class EncryptedNumberField extends EncryptedDBField |
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{ |
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const SHORT_INDEX_SUFFIX = "LastFourBlindIndex"; |
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/** |
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* @var array<string,string> |
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*/ |
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private static $composite_db = array( |
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"Value" => "Varchar(191)", |
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"BlindIndex" => 'Varchar(32)', |
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"LastFourBlindIndex" => 'Varchar(16)', |
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); |
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/** |
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* @param int $default |
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* @return int |
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*/ |
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public function getLastFourIndexSize($default = null) |
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{ |
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if (array_key_exists('last_four_index_size', $this->options)) { |
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return $this->options['last_four_index_size']; |
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} |
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return $default; |
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} |
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/** |
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* @return string |
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*/ |
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public function getLastFourBlindIndexField() |
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{ |
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return $this->getField('LastFourBlindIndex'); |
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} |
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/** |
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* @param mixed $value |
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* @param bool $markChanged |
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* @return $this |
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*/ |
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public function setLastFourBlindIndexField($value, $markChanged = true) |
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{ |
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return $this->setField('LastFourBlindIndex', $value, $markChanged); |
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} |
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/** |
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* @param CipherSweet $engine |
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* @param bool $fashHash |
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* @return EncryptedField |
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*/ |
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public function getEncryptedField($engine = null, $fashHash = null) |
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{ |
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if ($engine === null) { |
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$engine = EncryptHelper::getCipherSweet(); |
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} |
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if ($fashHash === null) { |
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$fashHash = EncryptHelper::getFashHash(); |
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} |
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$lastFourIndexSize = $this->getLastFourIndexSize(self::SMALL_INDEX_SIZE); |
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$indexSize = $this->getIndexSize(self::LARGE_INDEX_SIZE); |
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//TODO: review how naming is done (see: getEncryptedRow) |
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// fieldName needs to match exact db name for row rotator to work properly |
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$fieldName = $this->name . self::VALUE_SUFFIX; |
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$indexName = $this->name . self::INDEX_SUFFIX; |
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$shortIndexName = $this->name . self::SHORT_INDEX_SUFFIX; |
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$encryptedField = (new EncryptedField($engine, $this->tableName, $fieldName)) |
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->addBlindIndex(new BlindIndex($shortIndexName, [new LastFourDigits()], $lastFourIndexSize, $fashHash)) |
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->addBlindIndex(new BlindIndex($indexName, [], $indexSize, $fashHash)); |
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return $encryptedField; |
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} |
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/** |
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* @param SQLSelect $query |
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* @return void |
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*/ |
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// public function addToQuery(&$query) |
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// { |
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// parent::addToQuery($query); |
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// $query->selectField(sprintf('"%s' . self::VALUE_SUFFIX . '"', $this->name)); |
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// $query->selectField(sprintf('"%s' . self::INDEX_SUFFIX . '"', $this->name)); |
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// $query->selectField(sprintf('"%s' . self::SHORT_INDEX_SUFFIX . '"', $this->name)); |
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// } |
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} |
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lekoala /
silverstripe-encrypt
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