Untitled

server {
  listen 443;
  server_name app-ca.test.com;
  ssl on;

  ssl_certificate /root/ca/intermediate/certs/app-plus-intermediate.pem;
  ssl_certificate_key /root/ca/intermediate/private/app-ca-interm-ca.test.com.key.pem;
  ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
  ssl_ciphers  HIGH:!aNULL:!MD5;
  ssl_prefer_server_ciphers   on;

  # I have also tried adding the Intermediate CA cert in vain
  # ssl_client_certificate /root/client_rootca_intermediate.crt;
  ssl_client_certificate /root/client_rootca.crt;
  ssl_verify_client on;

  location / {
      root /usr/share/nginx/massl;
      index index.html index.htm;
  }
}

<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/1.13.5</center>
</body>
</html>

$ openssl s_client -connect app-ca.test.com:443 -tls1 -key /root/ca/intermediate/private/client.key.pem -cert /root/ca/intermediate/certs/client.cert.pem -CAfile /root/server_rootca.crt -state -debug
CONNECTED(00000003)
SSL_connect:before/connect initialization
write to 0x2239a90 [0x226e3c3] (181 bytes => 181 (0xB5))
0000 - 16 03 01 00 b0 01 00 00-ac 03 01 16 ed fa 81 3e   ...............>
0010 - fc 25 c1 55 73 8a ca 5f-d3 56 11 a6 0f 38 6e 3c   .%.Us.._.V...8n<
0020 - 52 fb 1f 9b fb 4f 4f 3e-5a fb 82 00 00 64 c0 14   R....OO>Z....d..
0090 - 00 ff 01 00 00 1f 00 0b-00 04 03 00 01 02 00 0a   ................
00a0 - 00 0a 00 08 00 17 00 19-00 18 00 16 00 23 00 00   .............#..
00b0 - 00 0f 00 01 01                                    .....
SSL_connect:SSLv3 write client hello A
read from 0x2239a90 [0x2269e73] (5 bytes => 5 (0x5))
0000 - 16 03 01 00 42                                    ....B
read from 0x2239a90 [0x2269e78] (66 bytes => 66 (0x42))
0000 - 02 00 00 3e 03 01 6f e5-89 1d bd 5a 58 26 d7 11   ...>..o....ZX&..
0010 - 8a 05 fd 2a 04 96 58 2e-2e 19 a7 89 46 a0 5b 21   ...*..X.....F.[!
0020 - c3 90 1c 3e 0b e6 00 c0-14 00 00 16 ff 01 00 01   ...>............
0030 - 00 00 0b 00 04 03 00 01-02 00 23 00 00 00 0f 00   ..........#.....
0040 - 01 01                                             ..
SSL_connect:SSLv3 read server hello A
read from 0x2239a90 [0x2269e73] (5 bytes => 5 (0x5))
0000 - 16 03 01 0c ab                                    .....
read from 0x2239a90 [0x2269e78] (3243 bytes => 3243 (0xCAB))
0000 - 0b 00 0c a7 00 0c a4 00-06 64 30 82 06 60 30 82   .........d0..`0.

0c90 - 5f b6 c7 86 5d 41 b3 fb-9c fe d3 0a 26 01 f9 d9   _...]A......&...
0ca0 - a6 ae 7f ff 4f c7 0b e8-97 b3 1c                  ....O......
depth=2 C = GB, ST = England, L = Melbourne, O = Alice Ltd, OU = IT Services, CN = server-and-ca.test.com, emailAddress = root@server-and-ca.test.com
verify return:1
depth=1 C = GB, ST = England, O = Alice Ltd, OU = Shared Services, CN = server-and-interm-ca.test.com, emailAddress = root@server-and-interm-ca.test.com
verify return:1
depth=0 C = US, ST = California, L = Mountain View, O = Alice Ltd, OU = Alice Ltd Web Services, CN = app-ca-interm-ca.test.com, emailAddress = root@app-ca-interm-ca.test.com
verify return:1
SSL_connect:SSLv3 read server certificate A
read from 0x2239a90 [0x2269e73] (5 bytes => 5 (0x5))
0000 - 16 03 01 01 4b                                    ....K
read from 0x2239a90 [0x2269e78] (331 bytes => 331 (0x14B))
0000 - 0c 00 01 47 03 00 17 41-04 13 5d 81 04 36 18 e7   ...G...A..]..6..
0010 - da bf 5e 30 dd d8 ee 77-f9 56 aa 77 8b 9e cd 3e   ..^0...w.V.w...>.
0110 - d1 82 65 0f 5d 9c 03 ba-5f 7f 62 33 a8 a6 62 8e   ..e.]..._.b3..b.
0120 - f2 5c 03 1d 4d 47 04 16-cb 80 09 39 32 be ca 23   ...MG.....92..#
0130 - 41 95 36 a6 4b 6b f0 6c-df a5 4b 26 d4 4a c5 f3   A.6.Kk.l..K&.J..
0140 - 99 0d c8 d8 aa 5d f8 88-86 b3 15                  .....].....
SSL_connect:SSLv3 read server key exchange A
read from 0x2239a90 [0x2269e73] (5 bytes => 5 (0x5))
0000 - 16 03 01 00 bc                                    .....
read from 0x2239a90 [0x2269e78] (188 bytes => 188 (0xBC))
0000 - 0d 00 00 b4 03 01 02 40-00 ae 00 ac 30 81 a9 31   .......@....0..1
0010 - 0b 30 09 06 03 55 04 06-13 02 47 42 31 10 30 0e   .0...U....GB1.0.
0090 - 06 09 2a 86 48 86 f7 0d-01 09 01 16 1b 72 6f 6f   ..*.H........roo
00a0 - 74 40 63 6c 69 65 6e 74-2d 61 6e 64 2d 63 61 2e   t@client-and-ca.
00b0 - 74 65 73 74 2e 63 6f 6d-0e                        test.com.
00bc - <SPACES/NULS>
SSL_connect:SSLv3 read server certificate request A
SSL_connect:SSLv3 read server done A
write to 0x2239a90 [0x2273910] (1593 bytes => 1593 (0x639))
0000 - 16 03 01 06 34 0b 00 06-30 00 06 2d 00 06 2a 30   ....4...0..-..*0
0010 - 82 06 26 30 82 04 0e a0-03 02 01 02 02 02 10 00   ..&0............
05f0 - 29 2a 6c 40 d1 ed 8f 6d-15 b2 cd 6a 7b 72 30 91   )*l@...m...j{r0.
0600 - ea 29 16 48 f2 11 21 15-3a 50 32 8b 95 87 b8 09   .).H..!.:P2.....
0610 - 11 84 9a a4 d2 b8 46 33-7a a2 79 51 ba 23 8c 96   ......F3z.yQ.#..
0620 - 45 62 2e b9 f5 ea 23 79-53 e0 cb 72 1f e6 19 d4   Eb....#yS..r....
0630 - 75 18 a8 2e 44 2f f3 8b-a7                        u...D/...
SSL_connect:SSLv3 write client certificate A
write to 0x2239a90 [0x2273910] (75 bytes => 75 (0x4B))
0000 - 16 03 01 00 46 10 00 00-42 41 04 b9 b3 02 d2 bc   ....F...BA......
0010 - e2 8b 49 a7 f6 8c 59 66-fc 0e 39 79 c7 23 34 e9   ..I...Yf..9y.#4.
0020 - 3e 04 98 3a 60 78 1d aa-51 06 46 80 09 10 c4 7e   >..:`x..Q.F....~
0030 - a5 e7 05 d1 82 f2 0d bb-9a ca e7 29 01 0b 88 6d   ...........)...m
0040 - ed c3 52 73 b1 d4 3a 95-00 e8                     ..Rs..:...
004b - <SPACES/NULS>
SSL_connect:SSLv3 write client key exchange A
write to 0x2239a90 [0x2273910] (267 bytes => 267 (0x10B))
0000 - 16 03 01 01 06 0f 00 01-02 01 00 5e 29 8e 7c 69   ...........^).|i
0010 - 1e 10 0d 01 39 35 db 18-7e 4a a7 12 ae 12 7e f0   ....95..~J....~.
0020 - d6 93 c5 0a ba 5d e4 f1-a4 ae 8f c4 7d 52 80 16   .....]......}R..
00f0 - 6f 1f 56 73 bc ab 7f 07-1d f7 b4 ec d7 58 57 cd   o.Vs.........XW.
0100 - cd e0 37 b3 58 09 3a 75-93 02 ab                  ..7.X.:u...
SSL_connect:SSLv3 write certificate verify A
write to 0x2239a90 [0x2273910] (6 bytes => 6 (0x6))
0000 - 14 03 01 00 01 01                                 ......
SSL_connect:SSLv3 write change cipher spec A
write to 0x2239a90 [0x2273910] (53 bytes => 53 (0x35))
0000 - 16 03 01 00 30 24 90 78-08 d3 10 f3 f8 e3 c8 86   ....0$.x........
0010 - 82 f1 54 d1 38 7b 57 7b-83 a3 49 b9 3b 80 b2 86   ..T.8{W{..I.;...
0020 - 54 74 92 ec 9a a7 e7 28-1a ec 72 4c 64 8e f3 e3   Tt.....(..rLd...
0030 - 08 96 89 2a 03                                    ...*.
SSL_connect:SSLv3 write finished A
SSL_connect:SSLv3 flush data
read from 0x2239a90 [0x2269e73] (5 bytes => 5 (0x5))
0000 - 16 03 01 06 ea                                    .....
read from 0x2239a90 [0x2269e78] (1770 bytes => 1770 (0x6EA))
0000 - 04 00 06 e6 00 00 01 2c-06 e0 09 8d 58 07 45 c9   .......,....X.E.
0010 - 58 49 42 f4 13 00 47 12-be 22 a2 e3 a0 b6 22 bd   XIB...G.."....".
06d0 - a1 11 26 db 43 c8 6e 47-2f 40 65 61 e1 4e ef 0a   ..&.C.nG/@ea.N..
06e0 - 57 e0 28 19 2d 0d c6 7f-ae 2e                     W.(.-.....
SSL_connect:SSLv3 read server session ticket A
read from 0x2239a90 [0x2269e73] (5 bytes => 5 (0x5))
0000 - 14 03 01 00 01                                    .....
read from 0x2239a90 [0x2269e78] (1 bytes => 1 (0x1))
0000 - 01                                                .
read from 0x2239a90 [0x2269e73] (5 bytes => 5 (0x5))
0000 - 16 03 01 00 30                                    ....0
read from 0x2239a90 [0x2269e78] (48 bytes => 48 (0x30))
0000 - 7d 5f 53 a4 5e 85 67 67-8d 6c d6 6e 93 cd c6 75   }_S.^.gg.l.n...u
0010 - c1 83 17 d9 a8 e3 89 23-86 6b 8a 04 2d 46 7e 95   .......#.k..-F~.
0020 - 15 46 a4 ec 73 f3 3d 78-1b 0e 94 62 79 cf 96 3d   .F..s.=x...by..=
SSL_connect:SSLv3 read finished A
---
Certificate chain
 0 s:/C=US/ST=California/L=Mountain View/O=Alice Ltd/OU=Alice Ltd Web Services/CN=app-ca-interm-ca.test.com/emailAddress=root@app-ca-interm-ca.test.com
   i:/C=GB/ST=England/O=Alice Ltd/OU=Shared Services/CN=server-and-interm-ca.test.com/emailAddress=root@server-and-interm-ca.test.com
 1 s:/C=GB/ST=England/O=Alice Ltd/OU=Shared Services/CN=server-and-interm-ca.test.com/emailAddress=root@server-and-interm-ca.test.com
   i:/C=GB/ST=England/L=Melbourne/O=Alice Ltd/OU=IT Services/CN=server-and-ca.test.com/emailAddress=root@server-and-ca.test.com
---
Server certificate
-----BEGIN CERTIFICATE-----
MIIGYDCCBEigAwIBAgICEAAwDQYJKoZIhvcNAQELBQAwgagxCzAJBgNVBAYTAkdC
MRAwDgYDVQQIDAdFbmdsYW5kMRIwEAYDVQQKDAlBbGljZSBMdGQxGDAWBgNVBAsM
zBcik+fj+MUtDzhEl6EuW1ILjAvt5u4KBxj6d0yAXzleACOYncYWWzMfQdrFmwKh
W2opZQ==
-----END CERTIFICATE-----
subject=/C=US/ST=California/L=Mountain View/O=Alice Ltd/OU=Alice Ltd Web Services/CN=app-ca-interm-ca.test.com/emailAddress=root@app-ca-interm-ca.test.com
issuer=/C=GB/ST=England/O=Alice Ltd/OU=Shared Services/CN=server-and-interm-ca.test.com/emailAddress=root@server-and-interm-ca.test.com
---
Acceptable client certificate CA names
/C=GB/ST=England/L=Sydney/O=Something/OU=Shared Services/CN=client-and-ca.test.com/emailAddress=root@client-and-ca.test.com
Client Certificate Types: RSA sign, DSA sign, ECDSA sign
Server Temp Key: ECDH, P-256, 256 bits
---
SSL handshake has read 5682 bytes and written 2175 bytes
---
New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
SSL-Session:
    Protocol  : TLSv1
    Cipher    : ECDHE-RSA-AES256-SHA
    Session-ID: 2AF7BFD60D3EC4686EAAAE1971FBD8999E65C5C80A32182CB9A668B1411DB09C
    Session-ID-ctx:
    Master-Key: B3F714B4ACB61C6310311025B25AFBAFA9E9AAEBB5ACD5FEEAE5DCAE2690DECBFA4EC5CBD2C8A50F349F43026CD0C564
    Key-Arg   : None
    Krb5 Principal: None
    PSK identity: None
    PSK identity hint: None
    TLS session ticket lifetime hint: 300 (seconds)
    TLS session ticket:
    0000 - 09 8d 58 07 45 c9 58 49-42 f4 13 00 47 12 be 22   ..X.E.XIB...G.."
    0010 - a2 e3 a0 b6 22 bd 0d 71-c9 46 bd ab 84 85 06 f7   ...."..q.F......
    06b0 - 66 76 1f 3e 49 23 dc 2b-be 9e d5 03 b8 a5 a1 7d   fv.>I#.+.......}
    06c0 - 4d 56 79 3f 81 78 a1 11-26 db 43 c8 6e 47 2f 40   MVy?.x..&.C.nG/@
    06d0 - 65 61 e1 4e ef 0a 57 e0-28 19 2d 0d c6 7f ae 2e   ea.N..W.(.-.....

    Start Time: 1506251677
    Timeout   : 7200 (sec)
    Verify return code: 0 (ok)
---
GET / HTTP/1.0
write to 0x2239a90 [0x226e3c6] (90 bytes => 90 (0x5A))
0000 - 17 03 01 00 20 ca 44 95-8c a0 32 52 4d da d8 02   .... .D...2RM...
0010 - db bd 97 88 0e e3 cb b9-9e fb 50 7e 71 24 37 83   ..........P~q$7.
0020 - f8 48 03 a0 a1 17 03 01-00 30 db 99 b2 0c 6c e6   .H.......0....l.
0030 - f4 25 3d 54 2f b1 a3 3c-be 2a 36 94 6c ce 6d 8d   .%=T/..<.*6.l.m.
0040 - 3d 54 82 d3 f0 2a 40 3d-fc 3f 1b 3e 4a 40 10 e5   =T...*@=.?.>J@..
0050 - 1d eb ab 00 69 f1 e0 4a-27 47                     ....i..J'G

write to 0x2239a90 [0x226e3c6] (74 bytes => 74 (0x4A))
0000 - 17 03 01 00 20 95 06 3d-51 d5 7c c2 05 ef a7 d6   .... ..=Q.|.....
0010 - 2b 25 9c dd ec 5f 7c c0-15 83 c6 ca ea 47 a1 b2   +%..._|......G..
0020 - 82 2d 46 7d 64 17 03 01-00 20 3b 2e 36 63 10 b3   .-F}d.... ;.6c..
0030 - 50 c7 ec 36 a4 27 a0 4d-db bb 83 b5 c6 e8 d5 fa   P..6.'.M........
0040 - ca 76 dc e7 63 8f 94 b3-24 3f                     .v..c...$?
read from 0x2239a90 [0x2269e73] (5 bytes => 5 (0x5))
0000 - 17 03 01 01 a0                                    .....
read from 0x2239a90 [0x2269e78] (416 bytes => 416 (0x1A0))
0000 - a6 8b c1 bb a4 aa 12 2e-81 d9 45 41 74 0e 33 a4   ..........EAt.3.
0190 - 37 be 58 ca 01 80 fc 7c-79 2b 3f 54 a4 cd 4a 07   7.X....|y+?T..J.
HTTP/1.1 400 Bad Request
Server: nginx/1.13.5
Date: Sun, 24 Sep 2017 11:14:49 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/1.13.5</center>
</body>
</html>
read from 0x2239a90 [0x2269e73] (5 bytes => 5 (0x5))
0000 - 15 03 01                                          ...
0005 - <SPACES/NULS>
read from 0x2239a90 [0x2269e78] (32 bytes => 32 (0x20))
0000 - c3 75 ba 40 21 83 f7 0e-11 98 7b 44 84 bb 23 d5   .u.@!.....{D..#.
0010 - 80 32 1e 3e b6 b7 dd 4a-16 09 31 e9 62 a9 cd a3   .2.>...J..1.b...
SSL3 alert read:warning:close notify
closed
write to 0x2239a90 [0x226e3c3] (37 bytes => 37 (0x25))
0000 - 15 03 01 00 20 bd 18 f2-df 1b 84 fc 8e e0 80 a1   .... ...........
0010 - 2f 6f 31 b4 4c fc 1c e5-36 1f c5 fb 5d c0 f8 dc   /o1.L...6...]...
0020 - 19 6b 03 c3 2d                                    .k..-
SSL3 alert write:warning:close notify