tomcat doesn't deliver intermediate certificate (https)
I created a key and a csr on console, using the openssl executable. Then I sent the csr to a CA and got the certificate back. Now I want to import it into tomcat.
So I created a PKCS#12 file out of my key and my certificate:
openssl pkcs12 -export -in mycert.cert -inkey mykey.pem -out key_and_cert.p12
and then created a keystore containing it:
keytool -importkeystore -deststorepass [password] -destkeystore keystore.jks -srckeystore key_and_cert.p12 -srcstoretype PKCS12 -srcstorepass [password]
Then I import the intermediate certificate chain.crt:
keytool -import -trustcacerts -alias root -file chain.crt -keystore keystore.jks
Here the output of "keytool -keystore keystore.jks -list":
Keystore-Typ: JKS
Keystore-Provider: SUN
Ihr Keystore enthält 2 Einträge.
root, 14.11.2011, trustedCertEntry,
Zertifikatsfingerabdruck (MD5): [fingerprint]
1, 14.11.2011, PrivateKeyEntry,
Zertifikatsfingerabdruck (MD5): [fingerprint]
The tomcat server.xml contains:
<Connector port="443" protocol="HTTP/1.1" SSLEnabled="true"
maxThreads="150" scheme="https" secure="true"
clientAuth="false" URIEncoding="UTF-8" compression="on"
sslProtocol="TLS"
keystoreFile="/[absolute-path]/keystore.jks"
keystorePass="[password]" />
When I restart tomcat, it logs no errors in catalina.out, everything seems to be ok. But when I run firefox, it reports
[domain] uses an invalid security certificate.
The certificate is not trusted because no issuer chain was provided.
(Error code: sec_error_unknown_issuer)
Running "openssl s_client -connect [domain]:443 -showcerts" returns
CONNECTED(00000003)
depth=0 C = DE, OU = Domain Control Validated, CN = [domain]
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 C = DE, OU = Domain Control Validated, CN = [domain]
verify error:num=27:certificate not trusted
verify return:1
depth=0 C = DE, OU = Domain Control Validated, CN = [domain]
verify error:num=21:unable to verify the first certificate
verify return:1
---
Certificate chain
0 s:/C=DE/OU=Domain Control Validated/CN=[domain]
i:/C=BE/O=GlobalSign nv-sa/CN=GlobalSign Domain Validation CA - G2
-----BEGIN CERTIFICATE-----
[certificate from mycert.cert]
-----END CERTIFICATE-----
---
Server certificate
subject=/C=DE/OU=Domain Control Validated/CN=[domain]
issuer=/C=BE/O=GlobalSign nv-sa/CN=GlobalSign Domain Validation CA - G2
---
No client certificate CA names sent
---
SSL handshake has read 1777 bytes and written 289 bytes
---
New, TLSv1/SSLv3, Cipher is ECDHE-RSA-AES256-SHA
Server public key is 2048 bit
Secure Renegotiation IS supported
Compression: NONE
Expansion: NONE
SSL-Session:
Protocol : SSLv3
Cipher : ECDHE-RSA-AES256-SHA
Session-ID: [session-id]
Session-ID-ctx:
Master-Key: [master-key]
Key-Arg : None
PSK identity: None
PSK identity hint: None
Start Time: 1321268519
Timeout : 7200 (sec)
Verify return code: 21 (unable to verify the first certificate)
---
I think tomcat doesn't deliver the intermediate certificate although it knows it. What can I do to make tomcat deliver it?
Additional information: When importing the pkcs12 certificate, there is no certificate chain error, because the -importkeystore command doesn't checks the chain. I also tried to import the intermediate certificate first and then call -importkeystore. I got the same results.
edit: I just tried another way by inserting the chain directly in the PKCS#12 certificate and get the following error:
$ openssl pkcs12 -export -CAfile chain.pem -in mycert.cert -inkey mykey.pem -out key_and_cert.p12 -name tomcat -chain
Error unable to get issuer certificate getting chain.
But the chain certificate is ok:
$ openssl verify chain.pem
chain.pem: OK
Answer
I had to create a CA file by finding the root cert for my issuer and then putting the intermediate cert above it in the same file. Then I ran:
openssl pkcs12 -export -chain -inkey mykey.key -in mye.crt -name "tomcat" -CAfile intermediate_plus_root.crt -out key_and_cert.p12