(PHP 7 >= 7.2.0, PHP 8)
sodium_crypto_generichash_update — Add message to a hash
Appends a message to the internal hash state.
stateThe return value of sodium_crypto_generichash_init().
messageData to append to the hashing state.
Always returns true.
Example #1 sodium_crypto_generichash_update() example
<?php
$messages = [random_bytes(32), random_bytes(32), random_bytes(16)];
$state = sodium_crypto_generichash_init();
foreach ($messages as $message) {
sodium_crypto_generichash_update($state, $message);
}
$final = sodium_crypto_generichash_final($state);
var_dump(sodium_bin2hex($final));
$allAtOnce = sodium_crypto_generichash(implode('', $messages));
var_dump(sodium_bin2hex($allAtOnce));
?>The above example will output something similar to:
string(64) "e16e28bbbbcc39d9f5b1cbc33c41f1d217808640103e57a41f24870f79831e04" string(64) "e16e28bbbbcc39d9f5b1cbc33c41f1d217808640103e57a41f24870f79831e04"