锂钠 "Call to undefined function sodium_randombytes_buf"

Libsodium "Call to undefined function sodium_randombytes_buf"

试图遵循示例 here,但它给了我

Fatal error: Uncaught Error: Call to undefined function sodium_randombytes_buf()

最重要的是,密钥对似乎生成了奇怪的字符串,例如:

kÿòjƒFDú{î—4]F◊î¸˜ßˆu…®_•A∞+.

这正常吗?

这是我的代码

<?php

// send
$message = 'Hi, this is Alice';
$alice_to_bob_kp = sodium_crypto_box_keypair_from_secretkey_and_publickey(
    file_get_contents('./keys/sec-user-1_box_key.txt'),
    file_get_contents('./keys/pub-user-2_box_key.txt')
);
$nonce = sodium_randombytes_buf(SODIUM_CRYPTO_BOX_NONCEBYTES);
$ciphertext = sodium_crypto_box(
    $message,
    $nonce,
    $alice_to_bob_kp
);




// receive
$bob_to_alice_kp = sodium_crypto_box_keypair_from_secretkey_and_publickey(
    // $bob_box_secretkey,
    // $alice_box_publickey
    file_get_contents('./keys/sec-user-2_box_key.txt'),
    file_get_contents('./keys/pub-user-1_box_key.txt')
);
$nonce = sodium_randombytes_buf(SODIUM_CRYPTO_BOX_NONCEBYTES);
$plaintext = sodium_crypto_box_open(
    $ciphertext,
    $nonce,
    $bob_to_alice_kp
);
if ($plaintext === false) {
    die("Malformed message or invalid MAC");
}
die($plaintext);

没有sodium_randombytes_buf()这样的函数示例中的代码使用了\Sodium\randombytes_buf().

编辑:

来自错误历史记录: "The sodium_randombytes_* symbols have been removed a while back, as PHP now provide similar functions without this extension"

Bug #74896 sodium 的 .h 定义了一些没有 .c 实现的函数