sodium_crypto_core_ristretto255_sub
PHP function
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(PHP 8 >= 8.1.0)
Subtracts an element
Description
sodium_crypto_core_ristretto255_sub(string $p, string $q): string
Subtracts an element q from p. Available as of libsodium 1.0.18.
Func
Parameters
pAn element.
qAn element.
Return Values
Returns a 32-byte random String.
Examples
sodium_crypto_core_ristretto255_sub() example
php
<?php
$foo = sodium_crypto_core_ristretto255_random();
$bar = sodium_crypto_core_ristretto255_random();
$value = sodium_crypto_core_ristretto255_add($foo, $bar);
$value = sodium_crypto_core_ristretto255_sub($value, $bar);
var_dump(hash_equals($foo, $value));
?>The above example will output:
output
bool(true)