sodium_crypto_core_ristretto255_sub
(PHP 8 >= 8.1.0)
sodium_crypto_core_ristretto255_sub — 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.
Warning
This function is currently not documented; only its argument list is available.
Parameters
-
p -
An element.
-
q -
An element.
Return Values
Returns a 32-byte random string.
Examples
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)
See Also
- sodium_crypto_core_ristretto255_random() - Generates a random key
- sodium_crypto_core_ristretto255_add() - Adds an element
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.sodium-crypto-core-ristretto255-sub.php
