使用openssl从服务器获取证书 [英] Using openssl to get the certificate from a server

问题描述

我试图获取远程服务器的证书，然后我可以使用它添加到我的密钥库并在我的java应用程序中使用。

I am trying to get the certificate of a remote server, which I can then use to add to my keystore and use within my java application.

（谁在节假日:(）告诉我我可以运行这个：

A senior dev (who is on holidays :( ) informed me I can run this:

openssl s_client -connect host.host:9999

要获得原始证书，我可以复制和导出，我收到以下输出： / p>

To get a raw certificate dumped out, which I can then copy and export. I receive the following output:

depth=1 /C=NZ/ST=Test State or Province/O=Organization Name/OU=Organizational Unit Name/CN=Test CA
verify error:num=19:self signed certificate in certificate chain
verify return:0
23177:error:14094410:SSL routines:SSL3_READ_BYTES:sslv3 alert handshake failure:s3_pkt.c:1086:SSL alert number 40
23177:error:140790E5:SSL routines:SSL23_WRITE:ssl handshake failure:s23_lib.c:188:

我也尝试过这个选项

-showcerts 

和这一个（在debian心目中运行）

and this one (running on debian mind you)

-CApath /etc/ssl/certs/ 

错误。

此来源表示我可以使用CApath标志，但它似乎并没有帮助。我尝试了多个路径无效。

This source says I can use that CApath flag but it doesn't seem to help. I tried multiple paths to no avail.

请让我知道我在哪里出错。

Please let me know where I'm going wrong.

推荐答案

原来，这里有更多的复杂性：我需要提供更多的细节来滚动。我认为它的事情，它的一个连接，需要客户端认证，和hankshake需要更多的信息，继续到证书被转储的阶段。

It turns out there is more complexity here: I needed to provide many more details to get this rolling. I think its something to do with the fact that its a connection that needs client authentication, and the hankshake needed more info to continue to the stage where the certificates were dumped.

这是我的工作命令：

openssl s_client -connect host:port -key our_private_key.pem -showcerts \
                 -cert our_server-signed_cert.pem

希望这是一个向正确的方向微调，与一些更多的信息。

Hopefully this is a nudge in the right direction for anyone who could do with some more info.

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