eddsa_key_gen

#!/usr/bin/env php
<?php

define('KEY_DIRECTORY', getcwd() . '/keys');
define('PRIVATE_KEY', KEY_DIRECTORY . '/private.key');
define('PUBLIC_KEY', KEY_DIRECTORY . '/public.key');


function main(): int
{
    try {
        $keyPair = sodium_crypto_sign_keypair();
        $privateKey = base64_encode(sodium_crypto_sign_secretkey($keyPair));
        $publicKey = base64_encode(sodium_crypto_sign_publickey($keyPair));

        if (!file_exists(KEY_DIRECTORY) && mkdir(KEY_DIRECTORY, 0755) === false) {
            fprintf(STDERR, "Error while creating directory: %s" . PHP_EOL, KEY_DIRECTORY);
            return 1;
        }

        if (file_put_contents(PRIVATE_KEY, $privateKey, LOCK_EX) === false) {
            fprintf(STDERR, "Error while writing private key: %s" . PHP_EOL, PRIVATE_KEY);
            return 1;
        }


        if (file_put_contents(PUBLIC_KEY, $publicKey, LOCK_EX) === false) {
            fprintf(STDERR, "Error while writing public key: %s" . PHP_EOL, PRIVATE_KEY);
            return 1;
        }

        if (!chmod(PRIVATE_KEY, 0600)) {
            fprintf(STDERR, "Error while setting 0600 permission on private key: %s" . PHP_EOL, PRIVATE_KEY);
            return 1;
        }
        fprintf(STDOUT, 'Key generation complete. Output in: %s' . PHP_EOL, KEY_DIRECTORY);
    } catch (Throwable $e) {
        fprintf(STDERR, "Error: %s" . PHP_EOL, $e->getMessage());
        return 1;
    }

    return 0;
}

exit(main());