(PHP 8 >= 8.1.0)
sodium_crypto_core_ristretto255_sub — Subtracts an element
Subtracts an element q
from p
.
Available as of libsodium 1.0.18.
This function is currently not documented; only its argument list is available.
p
An element.
q
An element.
Returns a 32-byte random string.
Example #1 sodium_crypto_core_ristretto255_sub() example
<?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:
bool(true)