linux – 来自基于OpenSSL的分层证书颁发机构的Nginx和客户端证书

我正在尝试设置根证书颁发机构,从属证书颁发机构,并生成由Debian Squeeze上的Nginx 0.7.67接受的任何此CA签名的客户端证书.我的问题是根CA签名的客户端证书工作正常,而从属CA签名的一个导致“400 Bad Request.SSL证书错误”.

第1步：Nginx虚拟主机配置：

server {
 
    server_name  test.local;
 
    access_log  /var/log/Nginx/test.access.log;
 
    listen                  443 default ssl;
    keepalive_timeout       70;
 
    ssl_protocols           SSLv3 TLSv1;
    ssl_ciphers             AES128-SHA:AES256-SHA:RC4-SHA:DES-CBC3-SHA:RC4-MD5;
    ssl_certificate         /etc/Nginx/ssl/server.crt;
    ssl_certificate_key     /etc/Nginx/ssl/server.key;
    ssl_client_certificate  /etc/Nginx/ssl/client.pem;
    ssl_verify_client       on;
    ssl_session_cache       shared:SSL:10m;
    ssl_session_timeout     5m;
 
    location / {
            proxy_pass http://testsite.local/;
    }
}

第2步：根和从属CA的PKI基础架构组织(基于this 文章)：

# mkdir ~/pki && cd ~/pki
# mkdir rootCA subCA
# cp -v /etc/ssl/openssl.cnf rootCA/
# cd rootCA/
# mkdir certs private crl newcerts; touch serial; echo 01 > serial; touch index.txt; touch crlnumber; echo 01 > crlnumber
# cp -Rvp * ../subCA/

rootCA / openssl.cnf几乎没有变化：

[ CA_default ]
 
dir             = .                     # Where everything is kept
...
certificate     = $dir/certs/rootca.crt # The CA certificate
...
private_key     = $dir/private/rootca.key # The private key

和subCA / openssl.cnf：

[ CA_default ]
 
dir             = .                     # Where everything is kept
...
certificate     = $dir/certs/subca.crt  # The CA certificate
...
private_key     = $dir/private/subca.key # The private key

第3步：自签名根CA证书生成：

# openssl genrsa -out ./private/rootca.key -des3 2048
# openssl req -x509 -new -key ./private/rootca.key -out certs/rootca.crt -config openssl.cnf
Enter pass phrase for ./private/rootca.key:
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,If you enter '.',the field will be left blank.
-----
Country Name (2 letter code) [AU]:
State or Province Name (full name) [Some-State]:
Locality Name (eg,city) []:
Organization Name (eg,company) [Internet Widgits Pty Ltd]:
Organizational Unit Name (eg,section) []:
Common Name (eg,YOUR name) []:rootca
Email Address []:

第4步：从属CA证书生成：

# cd ../subCA
# openssl genrsa -out ./private/subca.key -des3 2048
# openssl req -new -key ./private/subca.key -out subca.csr -config openssl.cnf
Enter pass phrase for ./private/subca.key:
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,YOUR name) []:subca
Email Address []:
 
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []:

步骤5：根CA证书的从属CA证书签名：

# cd ../rootCA/
# openssl ca -in ../subCA/subca.csr -extensions v3_ca -config openssl.cnf
Using configuration from openssl.cnf
Enter pass phrase for ./private/rootca.key:
Check that the request matches the signature
Signature ok
Certificate Details:
        Serial Number: 1 (0x1)
        Validity
            Not Before: Feb  4 10:49:43 2013 GMT
            Not After : Feb  4 10:49:43 2014 GMT
        Subject:
            countryName               = AU
            stateOrProvinceName       = Some-State
            organizationName          = Internet Widgits Pty Ltd
            commonName                = subca
        X509v3 extensions:
            X509v3 Subject Key Identifier:
                C9:E2:AC:31:53:81:86:3F:CD:F8:3D:47:10:FC:E5:8E:C2:DA:A9:20
            X509v3 Authority Key Identifier:
                keyid:E9:50:E6:BF:57:03:EA:6E:8F:21:23:86:BB:44:3D:9F:8F:4A:8B:F2
                DirName:/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=rootca
                serial:9F:FB:56:66:8D:D3:8F:11
 
            X509v3 Basic Constraints:
                CA:TRUE
Certificate is to be certified until Feb  4 10:49:43 2014 GMT (365 days)
Sign the certificate? [y/n]:y
 
1 out of 1 certificate requests certified,commit? [y/n]y
...
# cd ../subCA/
# cp -v ../rootCA/newcerts/01.pem certs/subca.crt

步骤6：根CA(对于Nginx虚拟主机)生成和签名服务器证书：

# cd ../rootCA
# openssl genrsa -out ./private/server.key -des3 2048
# openssl req -new -key ./private/server.key -out server.csr -config openssl.cnf
Enter pass phrase for ./private/server.key:
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,YOUR name) []:test.local
Email Address []:
 
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []:
# openssl ca -in server.csr -out certs/server.crt -config openssl.cnf

步骤7：客户端#1证书生成和根CA签名：

# openssl genrsa -out ./private/client1.key -des3 2048
# openssl req -new -key ./private/client1.key -out client1.csr -config openssl.cnf
Enter pass phrase for ./private/client1.key:
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,YOUR name) []:Client #1
Email Address []:
 
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []:
# openssl ca -in client1.csr -out certs/client1.crt -config openssl.cnf

步骤8：客户端#1证书转换为PKCS12格式：

# openssl pkcs12 -export -out certs/client1.p12 -inkey private/client1.key -in certs/client1.crt -certfile certs/rootca.crt

步骤9：下属CA生成和签署客户端#2证书：

# cd ../subCA/
# openssl genrsa -out ./private/client2.key -des3 2048
# openssl req -new -key ./private/client2.key -out client2.csr -config openssl.cnf
Enter pass phrase for ./private/client2.key:
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,YOUR name) []:Client #2
Email Address []:
 
Please enter the following 'extra' attributes
to be sent with your certificate request
A challenge password []:
An optional company name []:
# openssl ca -in client2.csr -out certs/client2.crt -config openssl.cnf

步骤10：客户端#2证书转换为PKCS12格式：

# openssl pkcs12 -export -out certs/client2.p12 -inkey private/client2.key -in certs/client2.crt -certfile certs/subca.crt

步骤11：将服务器证书和私钥传递给Nginx(使用OS超级用户权限执行)：

# cd ../rootCA/
# cp -v certs/server.crt /etc/Nginx/ssl/
# cp -v private/server.key /etc/Nginx/ssl/

步骤12：将根CA和从属CA证书传递给Nginx(使用OS超级用户权限执行)：

# cat certs/rootca.crt > /etc/Nginx/ssl/client.pem
# cat ../subCA/certs/subca.crt >> /etc/Nginx/ssl/client.pem

client.pem文件如下所示：

# cat /etc/Nginx/ssl/client.pem
-----BEGIN CERTIFICATE-----
MIID6TCCAtGgAwIBAgIJAJ/7VmaN048RMA0GCSqGSIb3DQEBBQUAMFYxCzAJBgNV
BAYTAkFVMRMwEQYDVQQIEwpTb21lLVN0YXRlMSEwHwYDVQQKExhJbnRlcm5ldCBX
aWRnaXRzIFB0eSBMdGQxDzANBgNVBAMTBnJvb3RjYTAeFw0xMzAyMDQxMDM1NTda
...
-----END CERTIFICATE-----
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number: 1 (0x1)
...
-----BEGIN CERTIFICATE-----
MIID4DCCAsigAwIBAgIBatanBgkqhkiG9w0BAQUFADBWMQswCQYDVQQGEwJBVTET
MBEGA1UECBMKU29tZS1TdGF0ZTEhMB8GA1UEChMYSW50ZXJuZXQgV2lkZ2l0cyBQ
dHkgTHRkMQ8wDQYDVQQDEwZyb290Y2EwHhcNMTMwMjA0MTA0OTQzWhcNMTQwMjA0
...
-----END CERTIFICATE-----

看起来一切正常：

# service Nginx reload
# Reloading Nginx configuration: Enter PEM pass phrase:
# Nginx.
#

步骤13：在浏览器中安装* .p12证书(在我的情况下为Firefox)给出了我上面提到的问题.客户端#1 = 200 OK,客户端#2 = 400错误请求/ SSL证书错误.任何想法我该怎么办？

更新1：SSL连接测试尝试的结果：

# openssl s_client -connect test.local:443 -CAfile ~/pki/rootCA/certs/rootca.crt -cert ~/pki/rootCA/certs/client1.crt -key ~/pki/rootCA/private/client1.key -showcerts
Enter pass phrase for tmp/testcert/client1.key:
CONNECTED(00000003)
depth=1 C = AU,ST = Some-State,O = Internet Widgits Pty Ltd,CN = rootca
verify return:1
depth=0 C = AU,CN = test.local
verify return:1
---
Certificate chain
 0 s:/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=test.local
   i:/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=rootca
-----BEGIN CERTIFICATE-----
MIIDpjCCAo6gAwIBAgIBAjANBgkqhkiG9w0BAQUFADBWMQswCQYDVQQGEwJBVTET
MBEGA1UECBMKU29tZS1TdGF0ZTEhMB8GA1UEChMYSW50ZXJuZXQgV2lkZ2l0cyBQ
dHkgTHRkMQ8wDQYDVQQDEwZyb290Y2EwHhcNMTMwMjA0MTEwNjAzWhcNMTQwMjA0
...
-----END CERTIFICATE-----
 1 s:/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=rootca
   i:/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=rootca
-----BEGIN CERTIFICATE-----
MIID6TCCAtGgAwIBAgIJAJ/7VmaN048RMA0GCSqGSIb3DQEBBQUAMFYxCzAJBgNV
BAYTAkFVMRMwEQYDVQQIEwpTb21lLVN0YXRlMSEwHwYDVQQKExhJbnRlcm5ldCBX
aWRnaXRzIFB0eSBMdGQxDzANBgNVBAMTBnJvb3RjYTAeFw0xMzAyMDQxMDM1NTda
...
-----END CERTIFICATE-----
---
Server certificate
subject=/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=test.local
issuer=/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=rootca
---
Acceptable client certificate CA names
/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=rootca
/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=subca
---
SSL handshake has read 3395 bytes and written 2779 bytes
---
New,TLSv1/SSLv3,Cipher is AES256-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: zlib compression
Expansion: zlib compression
SSL-Session:
    Protocol  : TLSv1
    Cipher    : AES256-SHA
    Session-ID: 15BFC2029691262542FAE95A48078305E76EEE7D586400F8C4F7C516B0F9D967
    Session-ID-ctx: 
    Master-Key: 23246CF166E8F3900793F0A2561879E5DB07291F32E99591BA1CF53E6229491FEAE6858BFC9AACAF271D9C3706F139C7
    Key-Arg   : None
    PSK identity: None
    PSK identity hint: None
    SRP username: None
    TLS session ticket:
    0000 - c2 5e 1d d2 b5 6d 40 23-b2 40 89 e4 35 75 70 07   .^...m@#.@..5up.
    0010 - 1b bb 2b e6 e0 b5 ab 10-10 bf 46 6e aa 67 7f 58   ..+.......Fn.g.X
    0020 - cf 0e 65 a4 67 5a 15 ba-aa 93 4e dd 3d 6e 73 4c   ..e.gZ....N.=nsL
    0030 - c5 56 f6 06 24 0f 48 e6-38 36 de f1 b5 31 c5 86   .V..$.H.86...1..
    ...
    0440 - 4c 53 39 e3 92 84 d2 d0-e5 e2 f5 8a 6a a8 86 b1   LS9.........j...
 
    Compression: 1 (zlib compression)
    Start Time: 1359989684
    Timeout   : 300 (sec)
    Verify return code: 0 (ok)
---

客户端#2和根CA证书似乎一切正常,但请求返回400错误请求错误：

# openssl s_client -connect test.local:443 -CAfile ~/pki/rootCA/certs/rootca.crt -cert ~/pki/subCA/certs/client2.crt -key ~/pki/subCA/private/client2.key -showcerts
Enter pass phrase for tmp/testcert/client2.key:
CONNECTED(00000003)
depth=1 C = AU,CN = test.local
verify return:1
...
    Compression: 1 (zlib compression)
    Start Time: 1359989989
    Timeout   : 300 (sec)
    Verify return code: 0 (ok)
---
GET / HTTP/1.0
 
HTTP/1.1 400 Bad Request
Server: Nginx/0.7.67
Date: Mon,04 Feb 2013 15:00:43 GMT
Content-Type: text/html
Content-Length: 231
Connection: close
 
<html>
<head><title>400 The SSL certificate error</title></head>
<body bgcolor="white">
<center><h1>400 Bad Request</h1></center>
<center>The SSL certificate error</center>
<hr><center>Nginx/0.7.67</center>
</body>
</html>
closed

客户端#2证书和从属CA证书的验证失败：

# openssl s_client -connect test.local:443 -CAfile ~/pki/subCA/certs/subca.crt -cert ~/pki/subCA/certs/client2.crt -key ~/pki/subCA/private/client2.key -showcerts
Enter pass phrase for tmp/testcert/client2.key:
CONNECTED(00000003)
depth=1 C = AU,CN = rootca
verify error:num=19:self signed certificate in certificate chain
verify return:0
...
    Compression: 1 (zlib compression)
    Start Time: 1359990354
    Timeout   : 300 (sec)
    Verify return code: 19 (self signed certificate in certificate chain)
---
GET / HTTP/1.0
 
HTTP/1.1 400 Bad Request
...

串联CA证书和客户端#2仍然会出现400错误请求错误(但客户端#1仍然可以正常运行)：

# cat certs/rootca.crt ../subCA/certs/subca.crt > certs/concatenatedca.crt
# openssl s_client -connect test.local:443 -CAfile ~/pki/rootCA/certs/concatenatedca.crt -cert ~/pki/subCA/certs/client2.crt -key ~/pki/subCA/private/client2.key -showcerts
Enter pass phrase for tmp/testcert/client2.key:
CONNECTED(00000003)
depth=1 C = AU,CN = test.local
verify return:1
---
...
    Compression: 1 (zlib compression)
    Start Time: 1359990772
    Timeout   : 300 (sec)
    Verify return code: 0 (ok)
---
GET / HTTP/1.0
 
HTTP/1.1 400 Bad Request
...

更新2：我已设法通过启用调试重新编译Nginx.以下是Client#1轨道成功连接的部分：

2013/02/05 14:08:23 [debug] 38701#0: *119 accept: <MY IP ADDRESS> fd:3
2013/02/05 14:08:23 [debug] 38701#0: *119 event timer add: 3: 60000:2856497512
2013/02/05 14:08:23 [debug] 38701#0: *119 kevent set event: 3: ft:-1 fl:0025
2013/02/05 14:08:23 [debug] 38701#0: *119 malloc: 28805200:660
2013/02/05 14:08:23 [debug] 38701#0: *119 malloc: 28834400:1024
2013/02/05 14:08:23 [debug] 38701#0: *119 posix_memalign: 28860000:4096 @16
2013/02/05 14:08:23 [debug] 38701#0: *119 http check ssl handshake
2013/02/05 14:08:23 [debug] 38701#0: *119 https ssl handshake: 0x16
2013/02/05 14:08:23 [debug] 38701#0: *119 SSL server name: "test.local"
2013/02/05 14:08:23 [debug] 38701#0: *119 SSL_do_handshake: -1
2013/02/05 14:08:23 [debug] 38701#0: *119 SSL_get_error: 2
2013/02/05 14:08:23 [debug] 38701#0: *119 SSL handshake handler: 0
2013/02/05 14:08:23 [debug] 38701#0: *119 verify:1,error:0,depth:1,subject:"/C=AU    /ST=Some-State/O=Internet Widgits Pty Ltd/CN=rootca",issuer: "/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=rootca"
2013/02/05 14:08:23 [debug] 38701#0: *119 verify:1,depth:0,subject:"/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=Client #1",issuer: "/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=rootca"
2013/02/05 14:08:23 [debug] 38701#0: *119 SSL_do_handshake: 1
2013/02/05 14:08:23 [debug] 38701#0: *119 SSL: TLSv1,cipher: "AES256-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(256) Mac=SHA1"
2013/02/05 14:08:23 [debug] 38701#0: *119 http process request line
2013/02/05 14:08:23 [debug] 38701#0: *119 SSL_read: -1
2013/02/05 14:08:23 [debug] 38701#0: *119 SSL_get_error: 2
2013/02/05 14:08:23 [debug] 38701#0: *119 http process request line
2013/02/05 14:08:23 [debug] 38701#0: *119 SSL_read: 1
2013/02/05 14:08:23 [debug] 38701#0: *119 SSL_read: 524
2013/02/05 14:08:23 [debug] 38701#0: *119 SSL_read: -1
2013/02/05 14:08:23 [debug] 38701#0: *119 SSL_get_error: 2
2013/02/05 14:08:23 [debug] 38701#0: *119 http request line: "GET / HTTP/1.1"

以下是Client#2轨道不成功连接的部分：

2013/02/05 13:51:34 [debug] 38701#0: *112 accept: <MY_IP_ADDRESS> fd:3
2013/02/05 13:51:34 [debug] 38701#0: *112 event timer add: 3: 60000:2855488975
2013/02/05 13:51:34 [debug] 38701#0: *112 kevent set event: 3: ft:-1 fl:0025
2013/02/05 13:51:34 [debug] 38701#0: *112 malloc: 28805200:660
2013/02/05 13:51:34 [debug] 38701#0: *112 malloc: 28834400:1024
2013/02/05 13:51:34 [debug] 38701#0: *112 posix_memalign: 28860000:4096 @16
2013/02/05 13:51:34 [debug] 38701#0: *112 http check ssl handshake
2013/02/05 13:51:34 [debug] 38701#0: *112 https ssl handshake: 0x16
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL server name: "test.local"
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL_do_handshake: -1
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL_get_error: 2
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL handshake handler: 0
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL_do_handshake: -1
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL_get_error: 2
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL handshake handler: 0
2013/02/05 13:51:34 [debug] 38701#0: *112 verify:0,error:20,subject:"/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=subca",issuer: "/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=rootca"
2013/02/05 13:51:34 [debug] 38701#0: *112 verify:0,error:27,issuer: "/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=rootca"
2013/02/05 13:51:34 [debug] 38701#0: *112 verify:1,subject:"/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=Client #2",issuer: "/C=AU/ST=Some-State/O=Internet Widgits Pty Ltd/CN=subca"
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL_do_handshake: 1
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL: TLSv1,cipher: "AES256-SHA SSLv3 Kx=RSA Au=RSA Enc=AES(256) Mac=SHA1"
2013/02/05 13:51:34 [debug] 38701#0: *112 http process request line
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL_read: 1
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL_read: 524
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL_read: -1
2013/02/05 13:51:34 [debug] 38701#0: *112 SSL_get_error: 2
2013/02/05 13:51:34 [debug] 38701#0: *112 http request line: "GET / HTTP/1.1"

所以我得到OpenSSL错误#20然后#27.根据验证documentation：

20 X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: unable to get local issuer certificate
 
    the issuer certificate could not be found: this occurs if the issuer certificate of an untrusted certificate cannot be found.
 
27 X509_V_ERR_CERT_UNTRUSTED: certificate not trusted
 
    the root CA is not marked as trusted for the specified purpose.

解决方法

据我所理解,

ssl_verify_depth 2;

应该做的伎俩.有关详情,请参见http://nginx.org/r/ssl_verify_depth.

linux – 来自基于OpenSSL的分层证书颁发机构的Nginx和客户端证书

解决方法

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