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s_client 没有因证书撤销而失败？

tag-icon • tag-icon ssl certificate openssl x509
s_client 没有因证书撤销而失败？

我正在使用带有 EFF 的 Firefox无处不在的 HTTPS。我最近访问了 Lavabit 的网站，看看它是否接受捐赠：

在此处输入图片描述

考虑到历史，撤销是意料之中的事……

但是，我没有使用 OpenSSL 的 复制结果s_client。下面，我得到Verify return code: 3 (unable to get certificate CRL)的是X509_V_ERR_UNABLE_TO_GET_CRL，而不是X509_V_ERR_CERT_REVOKED: certificate revoked。命令是：

openssl s_client -connect lavabit.com:443 -crl_check -CAfile valicert_class2_root.crt

CA 文件可以在以下位置找到ValiCert 旧版证书链。

$ echo -e "GET / HTTP/1.0\r\n" | openssl s_client -connect lavabit.com:443 -crl_check -CAfile valicert_class2_root.crt 
CONNECTED(00000003)
depth=0 O = *.lavabit.com, OU = Domain Control Validated, CN = *.lavabit.com
verify error:num=3:unable to get certificate CRL
verify return:1
depth=3 L = ValiCert Validation Network, O = "ValiCert, Inc.", OU = ValiCert Class 2 Policy Validation Authority, CN = http://www.valicert.com/, emailAddress = [email protected]
verify return:1
depth=2 C = US, O = "The Go Daddy Group, Inc.", OU = Go Daddy Class 2 Certification Authority
verify return:1
depth=1 C = US, ST = Arizona, L = Scottsdale, O = "GoDaddy.com, Inc.", OU = http://certificates.godaddy.com/repository, CN = Go Daddy Secure Certification Authority, serialNumber = 07969287
verify return:1
depth=0 O = *.lavabit.com, OU = Domain Control Validated, CN = *.lavabit.com
verify return:1
---
Certificate chain
 0 s:/O=*.lavabit.com/OU=Domain Control Validated/CN=*.lavabit.com
   i:/C=US/ST=Arizona/L=Scottsdale/O=GoDaddy.com, Inc./OU=http://certificates.godaddy.com/repository/CN=Go Daddy Secure Certification Authority/serialNumber=07969287
 1 s:/C=US/ST=Arizona/L=Scottsdale/O=GoDaddy.com, Inc./OU=http://certificates.godaddy.com/repository/CN=Go Daddy Secure Certification Authority/serialNumber=07969287
   i:/C=US/O=The Go Daddy Group, Inc./OU=Go Daddy Class 2 Certification Authority
 2 s:/C=US/O=The Go Daddy Group, Inc./OU=Go Daddy Class 2 Certification Authority
   i:/L=ValiCert Validation Network/O=ValiCert, Inc./OU=ValiCert Class 2 Policy Validation Authority/CN=http://www.valicert.com//[email protected]
 3 s:/L=ValiCert Validation Network/O=ValiCert, Inc./OU=ValiCert Class 2 Policy Validation Authority/CN=http://www.valicert.com//[email protected]
   i:/L=ValiCert Validation Network/O=ValiCert, Inc./OU=ValiCert Class 2 Policy Validation Authority/CN=http://www.valicert.com//[email protected]
---
Server certificate
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
subject=/O=*.lavabit.com/OU=Domain Control Validated/CN=*.lavabit.com
issuer=/C=US/ST=Arizona/L=Scottsdale/O=GoDaddy.com, Inc./OU=http://certificates.godaddy.com/repository/CN=Go Daddy Secure Certification Authority/serialNumber=07969287
---
No client certificate CA names sent
---
SSL handshake has read 5357 bytes and written 715 bytes
---
New, TLSv1/SSLv3, Cipher is DHE-RSA-AES256-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
SSL-Session:
    Protocol  : TLSv1
    Cipher    : DHE-RSA-AES256-SHA
    Session-ID: 67541EBB72FADE3B388F12AD47964AFE...
    Session-ID-ctx: 
    Master-Key: A070BD05576771DD47459ED6071807FC...
    Key-Arg   : None
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    Start Time: 1397614017
    Timeout   : 300 (sec)
Verify return code: 3 (unable to get certificate CRL)
---
DONE

服务器的证书似乎指向有效的 CRL。

知道我可能做错了什么吗？

答案1

openssl 的一个问题是其文档糟糕且使用晦涩难懂。即使使用选项，-crl_check它也不会进行任何 OCSP 检查或下载 CRL，您也不能使用类似-CRLfiles_client 的功能。您需要做的是将 CRL 和 CA 放在同一个文件中（通过查看源代码找到它，它实际上是可读的）。

由于您似乎已经拥有 PEM 格式的 CA，因此valicert_class2_root.crt您可以执行以下操作将 CRL 添加到其中：

  • http://crl.godaddy.com/gds1-64.crl使用 wget 或类似工具从证书中给出的URL 获取 CRL
  • 由于您获得的 CRL 是 DER 格式，因此您需要使用以下命令将其转换为 PEMopenssl crl -in gds1-64.crl -inform der -out crl.pem
  • 附加crl.pem到您的 CA 文件

如果你重试相同的s_client命令，你会得到Verify return code: 23 (certificate revoked)

答案2

当我研究这个问题时，斯蒂芬 (Steffan) 抢先找到了答案。

他的答案最适合快速完成任务。如果您想改用 CApath，则需要确保文件名经过正确哈希处理 ($HASH.r0)，而这在 openssl 中完全没有记录。如果您使用该方法，则应确保将所有 CRL 附加到文件中，而不仅仅是第一个证书的 CRL。

有一些工具可以获取 CRL 来填充您的系统： http://wiki.nikhef.nl/grid/FetchCRL3

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