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Trying to get an HTTPS session working using client certificates from a self-signed CA. The connection should check that all certificates are valid, both client and server side.

The process I followed is roundly as follows:

  1. Create Certificate Authority

    openssl genrsa -out CA.key 4096
    openssl req -new -key CA.key -out CA.csr
    openssl x509 -req -days 365 -in CA.csr -out CA.crt -signkey CA.key
    
  2. Create Server Certificate

    openssl genrsa -out server.key 4096
    openssl req -new -key server.key -out server.csr
    openssl ca -in server.csr -cert CA.crt -keyfile CA.key -out server.crt
    
  3. Create Client Certificate

    openssl genrsa -out client.key 4096
    openssl req -new -key client.key -out client.csr
    openssl ca -in client.csr -cert CA.crt -keyfile CA.key -out client.crt
    
  4. Configure Apache

    <VirtualHost _default_:443>
      SSLEngine on
      SSLCertificateFile "server.crt"
      SSLCertificateKeyFile "server.key"
      SSLCACertificateFile "CA.crt"
      <Directory "/var/www">
          SSLVerifyClient optional
          SSLVerifyDepth 10
          SSLOptions +StdEnvVars +ExportCertData
      </Directory>
    </VirtualHost>  
    

Now I try and make a test connection:

wget \
    --post-data 'id=1234' \
    --certificate=client.crt \
    --ca-certificate=CA.crt  \
    https://test.example.com:443

The resulting output from wget shows (over and over), in part:

HTTP request sent, awaiting response... No data received.
Retrying.

Checking the SSL error log from Apache give me the following messages:

[debug] ssl_engine_io.c(1606): [client xx.xx.xx.xx] total of 41 bytes in buffer, eos=1
[client xx.xx.xx.xx] Requesting connection re-negotiation
[debug] ssl_engine_io.c(1908): OpenSSL: I/O error, 5 bytes expected to read on BIO#80b075190 [mem: 80b0ca003]
[debug] ssl_engine_kernel.c(771): [client xx.xx.xx.xx] Performing full renegotiation: complete handshake protocol (client does support secure renegotiation)
[debug] ssl_engine_kernel.c(1892): OpenSSL: Handshake: start
[debug] ssl_engine_kernel.c(1900): OpenSSL: Loop: SSL renegotiate ciphers
[debug] ssl_engine_kernel.c(1900): OpenSSL: Loop: SSLv3 write hello request A
[debug] ssl_engine_kernel.c(1900): OpenSSL: Loop: SSLv3 flush data
[debug] ssl_engine_kernel.c(1900): OpenSSL: Loop: SSLv3 write hello request C
[info] [client xx.xx.xx.xx] Awaiting re-negotiation handshake
[debug] ssl_engine_kernel.c(1892): OpenSSL: Handshake: start
[debug] ssl_engine_kernel.c(1900): OpenSSL: Loop: before accept initialization
[debug] ssl_engine_io.c(1908): OpenSSL: I/O error, 5 bytes expected to read on BIO#80b075190 [mem: 80b0ca003]
[debug] ssl_engine_kernel.c(1929): OpenSSL: Exit: error in SSLv3 read client hello B
[error] [client xx.xx.xx.xx] Re-negotiation handshake failed: Not accepted by client!?
[debug] ssl_engine_io.c(1650): [client xx.xx.xx.xx] read from buffered SSL brigade, mode 0, 8192 bytes
[debug] ssl_engine_io.c(1725): [client xx.xx.xx.xx] buffered SSL brigade exhausted
[debug] ssl_engine_io.c(1650): [client xx.xx.xx.xx] read from buffered SSL brigade, mode 2, 0 bytes
[info] [client XX:XX:XX:XX::xx] Connection to child 3 established (server register.kiosk.tain.com:443)
[info] Seeding PRNG with 656 bytes of entropy
[debug] ssl_engine_kernel.c(1892): OpenSSL: Handshake: start 
[debug] ssl_engine_kernel.c(1900): OpenSSL: Loop: before/accept initialization

Run the openssl client to see if there's anything to help in here:

openssl s_client \
    -showcerts \
    -connect test.example.com:443 \
    -cert client.crt \
    -key client.key \
    -CAfile CA.crt

In the reply I see the following:

---
Server certificate
subject=/C=XX/ST=XXXXX/O=XXXX/CN=test.example.com
issuer=/O=XXXX/L=XXXXX/ST=XXXXX/C=SE/CN=XXXX Certificate Authority
---
No client certificate CA names sent
---
SSL handshake has read 3846 bytes and written 519 bytes
---
New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-GCM-SHA384
Server public key is 4096 bit

"No client certificate CA names sent" looks different to what I am expecting. I want client certificates.

Where am I going wrong?

4

1 回答 1

2

谈论“自签名 CA”真的没有意义。您的标题(“自签名客户端 SSL 证书 [...] ”)表明您正在谈论自签名客户端证书。您不是:您在谈论由您自己的 CA 颁发的客户端证书。

您已将SSLVerifyClient指令放在一个Directory部分中,这意味着一旦客户端发出尝试访问该目录的请求,就需要重新协商以获取客户端证书。

由于您的配置中没有DocumentRoot指令,因此不清楚请求是否/会尝试访问此目录(这可能取决于编译选项,具体取决于打包/var/www方式,但不是默认值)。

直接SSLVerifyClient放入您的虚拟主机中至少应该openssl s_client看到一个客户端证书请求。修复DocumentRoot可能还不够,因为您需要发出 HTTP 请求来触发重新协商。

于 2013-10-25T16:55:32.330 回答