SymfonyWorld Online 2022 Winter Edition

sodium_crypto_core_ristretto255_scalar_sub

(PHP 8 >= 8.1.0)

sodium_crypto_core_ristretto255_scalar_subSubtracts a scalar value

Description

sodium_crypto_core_ristretto255_scalar_sub(string $x, string $y): string

Subtracts a scalar y from x. Available as of libsodium 1.0.18.

Warning

This function is currently not documented; only its argument list is available.

Parameters

x

Scalar, representing the X coordinate.

y

Scalar, representing the Y coordinate.

Return Values

Returns a 32-byte random string.

Examples

Example #1 sodium_crypto_core_ristretto255_scalar_sub() example

<?php

$foo 
sodium_crypto_core_ristretto255_scalar_random();
$bar sodium_crypto_core_ristretto255_scalar_random();

$value sodium_crypto_core_ristretto255_scalar_add($foo$bar);
$value sodium_crypto_core_ristretto255_scalar_sub($value$bar);

var_dump(hash_equals($foo$value));
?>

The above example will output:

bool(true) 

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