<?php
declare(strict_types=1);
namespace ParagonIE\Ristretto;
use ParagonIE\HiddenString\HiddenString;
use SodiumException;
class ScalarValue extends Ristretto
{
/**
* @throws SodiumException
*/
public static function random(): ScalarValue
{
return new ScalarValue(
new HiddenString(sodium_crypto_core_ristretto255_scalar_random())
);
}
/**
* @throws SodiumException
*/
public function add(ScalarValue $other): ScalarValue
{
$result = sodium_crypto_core_ristretto255_scalar_add(
$this->bytes->getString(),
$other->getBytes()->getString()
);
return new ScalarValue(new HiddenString($result));
}
/**
* @throws SodiumException
*/
public function complement(): ScalarValue
{
return new ScalarValue(
new HiddenString(
sodium_crypto_core_ristretto255_scalar_complement($this->bytes->getString())
)
);
}
/**
* @throws SodiumException
*/
public function mul(ScalarValue $other): ScalarValue
{
$result = sodium_crypto_core_ristretto255_scalar_mul(
$this->bytes->getString(),
$other->getBytes()->getString()
);
return new ScalarValue(new HiddenString($result));
}
/**
* @throws SodiumException
*/
public function sub(ScalarValue $other): ScalarValue
{
$result = sodium_crypto_core_ristretto255_scalar_sub(
$this->bytes->getString(),
$other->getBytes()->getString()
);
return new ScalarValue(new HiddenString($result));
}
/**
* @throws SodiumException
*/
public function multBase(): GroupElement
{
return new GroupElement(
new HiddenString(
sodium_crypto_scalarmult_ristretto255_base($this->bytes->getString())
)
);
}
/**
* @throws SodiumException
*/
public function invert(): ScalarValue
{
return new ScalarValue(
new HiddenString(
sodium_crypto_core_ristretto255_scalar_invert($this->bytes->getString())
)
);
}
/**
* @throws SodiumException
*/
public function negate(): ScalarValue
{
return new ScalarValue(
new HiddenString(
sodium_crypto_core_ristretto255_scalar_negate($this->bytes->getString())
)
);
}
/**
* @throws SodiumException
*/
public function scalarPointMultiply(GroupElement $pk): GroupElement
{
return new GroupElement(
new HiddenString(
sodium_crypto_scalarmult_ristretto255(
$this->bytes->getString(),
$pk->getBytes()->getString()
)
)
);
}
}
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