没有带Boost证书的C ++ SSL客户端

时间:2017-06-14 11:18:48

标签: c++ ssl boost boost-asio tls1.2

我正在尝试使用SSL开发一个简单的boost::asio客户端 - 服务器应用程序。

我已经为ssl客户端服务器下载,编译并运行了boost示例。然而,在上述示例中,必须将证书作为硬盘中的文件提供给客户端。我想避免这种情况。

据我所知,在SSL协议中,服务器可以向客户端发送其证书。然后,客户端在整个会话期间使用该证书。

如何使用boost::asio库实现上述功能?

修改

我想要一个不需要这样做的客户端:

ctx.load_verify_file("path to certificate.crt");

我只想要加密连接,我不需要验证任何内容。

2 个答案:

答案 0 :(得分:0)

始终是发送证书的服务器。客户端证书是可选的,不经常使用¹。

因此,您希望在没有外部证书文件的情况下运行服务器。在这种情况下,只需从其他来源读取证书即可。

只需替换server.cpp

中的行
context_.use_certificate_chain_file("server.pem");
context_.use_private_key_file("server.pem", boost::asio::ssl::context::pem);
context_.use_tmp_dh_file("dh2048.pem");

context_.use_certificate_chain(boost::asio::buffer(s_server_pem));
context_.use_private_key(boost::asio::buffer(s_server_pem), boost::asio::ssl::context::pem);
context_.use_tmp_dh(boost::asio::buffer(s_dh2048_pem));

相应的样本证书和DH参数将是常量,如:

static unsigned char const s_server_pem[] = {
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  0x2d, 0x2d, 0x0a };

static unsigned char const s_dh2048_pem[] = {
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  0x71, 0x41, 0x6c, 0x42, 0x71, 0x51, 0x52, 0x6f, 0x56, 0x55, 0x55, 0x67, 0x75, 0x2b, 0x39, 0x43, 0x66, 0x32, 0x39, 0x77, 0x58, 0x6a, 0x56, 0x6c,
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  0x61, 0x6f, 0x36, 0x73, 0x41, 0x66, 0x62, 0x34, 0x55, 0x64, 0x47, 0x45, 0x55, 0x6c, 0x77, 0x48, 0x55, 0x58, 0x5a, 0x72, 0x41, 0x56, 0x35, 0x31,
  0x6f, 0x4d, 0x33, 0x30, 0x77, 0x49, 0x42, 0x41, 0x67, 0x3d, 0x3d, 0x0a, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x45, 0x4e, 0x44, 0x20, 0x44, 0x48, 0x20,
  0x50, 0x41, 0x52, 0x41, 0x4d, 0x45, 0x54, 0x45, 0x52, 0x53, 0x2d, 0x2d, 0x2d, 0x2d, 0x2d, 0x0a

¹我不认为任何提升样本都使用客户端证书。

答案 1 :(得分:0)

我找到了答案。

使用客户端而不需要提供服务器证书的方法是替换以下代码片段(从boost ssl示例中提取)

socket_.set_verify_mode(boost::asio::ssl::verify_peer);
socket_.set_verify_callback(
  boost::bind(&client::verify_certificate, this, _1, _2));

由此:

socket_.set_verify_mode(boost::asio::ssl::verify_none);

并且,在main方法中,注释或删除以下行:

ctx.load_verify_file("...");