(PHP 7 >= 7.2.0, PHP 8)
sodium_crypto_generichash_init — 初始化用于流式传输的哈希
$key = "", int $length = SODIUM_CRYPTO_GENERICHASH_BYTES): string用于流式传输 generichash API 的初始化方法。
keygenerichash 密钥。
length哈希函数的预期输出长度。
返回一个哈希状态，序列化为原始二进制字符串。
示例 #1 sodium_crypto_generichash_init() 示例
<?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));
?>上面的示例将输出类似于
string(64) "a2939a9163cb7c796ec28e01028489e72475c136b2697ea59e3e760ab4a8ab20" string(64) "a2939a9163cb7c796ec28e01028489e72475c136b2697ea59e3e760ab4a8ab20"