PHP 带 SSL/TLS 的套接字 - 无法使用合适的共享密码

Question

我正在尝试使用 PHP 带 SSL/TLS 的套接字创建服务器和客户端。但是，当向服务器发送数据时，我收到以下错误：

PHP Warning: stream_socket_accept(): SSL_R_NO_SHARED_CIPHER: no suitable shared cipher could be used. This could be because the server is missing an SSL certificate (local_cert context option) in server.php on line 32

我查看了其他示例并尝试了各种更改但无济于事。非常感谢任何帮助。

client.php

<?php

$host = '192.168.10.10';
$port = 8080;
$timeout = 30;
$cert = 'assets/cert.pem';

$context = stream_context_create(
    [ 'ssl'=> [ 'local_cert'=> $cert, "crypto_method" => STREAM_CRYPTO_METHOD_TLS_CLIENT ] ]
);

stream_context_set_option($context, 'ssl', 'allow_self_signed', true);
stream_context_set_option($context, 'ssl', 'verify_peer', false);
stream_context_set_option($context, 'ssl', 'verify_peer_name', false);

if ($socket = stream_socket_client( 'tls://'.$host.':'.$port, $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $context) ) {
    $meta = stream_get_meta_data($socket);

    print_r( $meta );

    fwrite($socket, "Hello, World!\n");
    echo stream_socket_recvfrom($socket,8192);
    fclose($socket);
} else {
   echo "ERROR: $errno - $errstr\n";
}

server.php

<?php

// Set the ip and port we will listen on
$address = '192.168.10.10';
$port = 8080;

$cert = 'assets/cert.pem';

$context = stream_context_create();

stream_context_set_option($context, 'ssl', 'local_cert', $cert);
stream_context_set_option($context, 'ssl', 'crypto_method', STREAM_CRYPTO_METHOD_TLS_SERVER);

stream_context_set_option($context, 'ssl', 'allow_self_signed', true);
stream_context_set_option($context, 'ssl', 'verify_peer', false);
stream_context_set_option($context, 'ssl', 'verify_peer_name', false);

$server = stream_socket_server('tls://'.$address.':'.$port, $errno, $errstr, STREAM_SERVER_BIND|STREAM_SERVER_LISTEN, $context);

// Display server start time
echo "PHP Socket Server started at " . $address . " " . $port . ", at ". date( 'Y-m-d H:i:s' ) ."\n";

// loop and listen
while (true) {
    /* Accept incoming requests and handle them as child processes */
    $client = stream_socket_accept($server);

    $ip = stream_socket_get_name( $client, true );

    echo "New connection from " . $ip;

    stream_set_blocking($client, true); // block the connection until SSL is done
    stream_socket_enable_crypto($client, true, STREAM_CRYPTO_METHOD_TLS_SERVER);

    // Read the input from the client – 1024 bytes
    $input = fread($client, 1024);

    // unblock connection
    stream_set_blocking($client, false);

    // Strip all white spaces from input
    $output = preg_replace("[ \t\n\r]", "", $input) . "[=12=]";

    $new = $input;

    // Display Date, IP and Msg received
    echo date( 'Y-m-d H:i:s' ) . " | " . $ip . ": 3[0;32m" . $input . "3[0m" . PHP_EOL;

    fclose($client);
}

// Close the master sockets
socket_close($sock);

Answer 1

PHP 有可悲的 SSL 问题。更糟糕的是，它们是 OS 依赖的，大多数修复都是针对 REHL 的。我正在为您提供示例完整代码和其他指南。他们可能会帮助你。为避免这些错误，this library is commonly used。这并不总是实用的。

第 32 行应该是这样的：

stream_set_blocking($client, true); // block the connection until SSL is done

这里是stream blocking doc on PHP manual, also read this. Here is a good guide on using SSL with PHP, here is example of client-server。可以以这种方式添加密码：

$context = stream_context_create(
    [
        'ssl' => [
            'ciphers' => 'DHE-RSA-AES256-SHA:LONG-CIPHER',
        ],
    ]
);

Answer 2

事实证明，问题与 OpenSSL 和可用的传输流有关。该问题已通过以下方式解决：

正在将 OpenSSL 更新到最新版本（1.0.2k，以支持 TLS v1.2）
正在重新编译PHP以启用 tlsv1.2 传输流

更新代码以在服务器和客户端上使用 tlsv1.2:// 作为协议，例如

$server = stream_socket_server('tlsv1.2://'.$address.':'.$port, $errno, 
  $errstr, STREAM_SERVER_BIND|STREAM_SERVER_LISTEN, $context);

和

$socket = stream_socket_client( 'tlsv1.2://'.$host.':'.$port, $errno,
  $errstr, 30, STREAM_CLIENT_CONNECT, $context)

一旦传输流更新为 TLSv1.2，就不再需要密码选项，脚本成功协商了 TLS 连接。

Answer 3

我遇到过类似的问题。但是我的证书和私钥在单独的文件中。根据 PHP 文档，您应该能够单独加载私钥：

stream_context_set_option($context, 'ssl', 'local_cert', '/etc/apache2/ssl/public_crt.cert');
stream_context_set_option($context, 'ssl', 'local_pk', '/etc/apache2/ssl/private_key.pem');

事实证明这对我不起作用，导致原始 post 中出现相同的错误消息。将证书和密钥合并到一个文件中就成功了：

cat public_crt.cert private_key.pem > combined_cert.pem

并在 PHP 中设置新的组合证书，使事情起作用：

stream_context_set_option($context, 'ssl', 'local_cert', '/etc/apache2/ssl/combined_cert.pem');

PHP 带 SSL/TLS 的套接字 - 无法使用合适的共享密码

PHP Sockets with SSL / TLS - no suitable shared cipher could be used

ssl

client-server

php-socket

php-7

tls1.2