sodium_crypto_generichash_init

sodium_crypto_generichash_init

Initialize a hash for streaming

string **sodium_crypto_generichash_init** string $key int $length

The initialization method for the streaming generichash API.

keyThe generichash key.

lengthThe expected output length of the hash function.

Returns a hash state, serialized as a raw binary string.

Voorbeeld: example

<?php
$messages = [random_bytes(32), random_bytes(32), random_bytes(16)];
$state = sodium_crypto_generichash_init('', 32);
foreach ($messages as $message) {
    sodium_crypto_generichash_update($state, $message);
}
$final = sodium_crypto_generichash_final($state, 32);
var_dump(sodium_bin2hex($final));
$allAtOnce = sodium_crypto_generichash(implode('', $messages));
var_dump(sodium_bin2hex($allAtOnce));
?>

string(64) "a2939a9163cb7c796ec28e01028489e72475c136b2697ea59e3e760ab4a8ab20"
string(64) "a2939a9163cb7c796ec28e01028489e72475c136b2697ea59e3e760ab4a8ab20"