balmet.com

Fe.php (5207B)

---

 <?php
 
 if (class_exists('ParagonIE_Sodium_Core32_Curve25519_Fe', false)) {
     return;
 }
 
 /**
  * Class ParagonIE_Sodium_Core32_Curve25519_Fe
  *
  * This represents a Field Element
  */
 class ParagonIE_Sodium_Core32_Curve25519_Fe implements ArrayAccess
 {
     /**
      * @var array<int, ParagonIE_Sodium_Core32_Int32>
      */
     protected $container = array();
 
     /**
      * @var int
      */
     protected $size = 10;
 
     /**
      * @internal You should not use this directly from another application
      *
      * @param array<int, ParagonIE_Sodium_Core32_Int32> $array
      * @param bool $save_indexes
      * @return self
      * @throws SodiumException
      * @throws TypeError
      */
     public static function fromArray($array, $save_indexes = null)
     {
         $count = count($array);
         if ($save_indexes) {
             $keys = array_keys($array);
         } else {
             $keys = range(0, $count - 1);
         }
         $array = array_values($array);
 
         $obj = new ParagonIE_Sodium_Core32_Curve25519_Fe();
         if ($save_indexes) {
             for ($i = 0; $i < $count; ++$i) {
                 $array[$i]->overflow = 0;
                 $obj->offsetSet($keys[$i], $array[$i]);
             }
         } else {
             for ($i = 0; $i < $count; ++$i) {
                 $array[$i]->overflow = 0;
                 $obj->offsetSet($i, $array[$i]);
             }
         }
         return $obj;
     }
 
     /**
      * @internal You should not use this directly from another application
      *
      * @param array<int, int> $array
      * @param bool $save_indexes
      * @return self
      * @throws SodiumException
      * @throws TypeError
      */
     public static function fromIntArray($array, $save_indexes = null)
     {
         $count = count($array);
         if ($save_indexes) {
             $keys = array_keys($array);
         } else {
             $keys = range(0, $count - 1);
         }
         $array = array_values($array);
         $set = array();
         /** @var int $i */
         /** @var int $v */
         foreach ($array as $i => $v) {
             $set[$i] = ParagonIE_Sodium_Core32_Int32::fromInt($v);
         }
 
         $obj = new ParagonIE_Sodium_Core32_Curve25519_Fe();
         if ($save_indexes) {
             for ($i = 0; $i < $count; ++$i) {
                 $set[$i]->overflow = 0;
                 $obj->offsetSet($keys[$i], $set[$i]);
             }
         } else {
             for ($i = 0; $i < $count; ++$i) {
                 $set[$i]->overflow = 0;
                 $obj->offsetSet($i, $set[$i]);
             }
         }
         return $obj;
     }
 
     /**
      * @internal You should not use this directly from another application
      *
      * @param mixed $offset
      * @param mixed $value
      * @return void
      * @throws SodiumException
      * @throws TypeError
      */
     public function offsetSet($offset, $value)
     {
         if (!($value instanceof ParagonIE_Sodium_Core32_Int32)) {
             throw new InvalidArgumentException('Expected an instance of ParagonIE_Sodium_Core32_Int32');
         }
         if (is_null($offset)) {
             $this->container[] = $value;
         } else {
             ParagonIE_Sodium_Core32_Util::declareScalarType($offset, 'int', 1);
             $this->container[(int) $offset] = $value;
         }
     }
 
     /**
      * @internal You should not use this directly from another application
      *
      * @param mixed $offset
      * @return bool
      * @psalm-suppress MixedArrayOffset
      */
     public function offsetExists($offset)
     {
         return isset($this->container[$offset]);
     }
 
     /**
      * @internal You should not use this directly from another application
      *
      * @param mixed $offset
      * @return void
      * @psalm-suppress MixedArrayOffset
      */
     public function offsetUnset($offset)
     {
         unset($this->container[$offset]);
     }
 
     /**
      * @internal You should not use this directly from another application
      *
      * @param mixed $offset
      * @return ParagonIE_Sodium_Core32_Int32
      * @psalm-suppress MixedArrayOffset
      */
     public function offsetGet($offset)
     {
         if (!isset($this->container[$offset])) {
             $this->container[(int) $offset] = new ParagonIE_Sodium_Core32_Int32();
         }
         /** @var ParagonIE_Sodium_Core32_Int32 $get */
         $get = $this->container[$offset];
         return $get;
     }
 
     /**
      * @internal You should not use this directly from another application
      *
      * @return array
      */
     public function __debugInfo()
     {
         if (empty($this->container)) {
             return array();
         }
         $c = array(
             (int) ($this->container[0]->toInt()),
             (int) ($this->container[1]->toInt()),
             (int) ($this->container[2]->toInt()),
             (int) ($this->container[3]->toInt()),
             (int) ($this->container[4]->toInt()),
             (int) ($this->container[5]->toInt()),
             (int) ($this->container[6]->toInt()),
             (int) ($this->container[7]->toInt()),
             (int) ($this->container[8]->toInt()),
             (int) ($this->container[9]->toInt())
         );
         return array(implode(', ', $c));
     }
 }