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    sodium_crypto_generichash_final

    (PHP 7 >= 7.2.0, PHP 8)

    sodium_crypto_generichash_final — Complete the hash

    Description

    sodium_crypto_generichash_final(string &$state, int $length = SODIUM_CRYPTO_GENERICHASH_BYTES): string

    The finalization method for the streaming generichash API.

    Parameters

    state

    Hash state returned from sodium_crypto_generichash_init()

    length

    Output length.

    Return Values

    Cryptographic hash.

    Examples

    Example #1 sodium_crypto_generichash_final() 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));
    ?>

    The above example will output something similar to:

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