sodium_crypto_core_ristretto255_scalar_sub
(PHP 8 >= 8.1.0)
sodium_crypto_core_ristretto255_scalar_sub — Subtracts a scalar value
Description
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)
See Also
- sodium_crypto_core_ristretto255_scalar_random() - Generates a random key
- sodium_crypto_core_ristretto255_scalar_add() - Adds a scalar value
add a note
User Contributed Notes
There are no user contributed notes for this page.
