Connecting to Gmail’s POP (POPS) server always caused a certificate warning on my Nokia E61 Symbian based phone. The solution is to add Google’s Gmail root SSL certificate to the phone. First check the SSL cert that gmail is advertising.


host1:~ kevin$ openssl s_client -connect pop.gmail.com:995 -showcerts
CONNECTED(00000003)
depth=0 /C=US/ST=California/L=Mountain View/O=Google Inc./CN=pop.gmail.com
verify error:num=20:unable to get local issuer certificate
verify return:1
depth=0 /C=US/ST=California/L=Mountain View/O=Google Inc./CN=pop.gmail.com
verify error:num=27:certificate not trusted
verify return:1
depth=0 /C=US/ST=California/L=Mountain View/O=Google Inc./CN=pop.gmail.com
verify error:num=21:unable to verify the first certificate
verify return:1
---
Certificate chain
0 s:/C=US/ST=California/L=Mountain View/O=Google Inc./CN=pop.gmail.com
i:/C=US/O=Equifax/OU=Equifax Secure Certificate Authority
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
---
Server certificate
subject=/C=US/ST=California/L=Mountain View/O=Google Inc./CN=pop.gmail.com
issuer=/C=US/O=Equifax/OU=Equifax Secure Certificate Authority
---
No client certificate CA names sent
---
SSL handshake has read 891 bytes and written 332 bytes
---
New, TLSv1/SSLv3, Cipher is DES-CBC3-SHA
Server public key is 1024 bit
SSL-Session:
Protocol : TLSv1
Cipher : DES-CBC3-SHA
Session-ID: 19B1FF1A50B6ABCDBB1FEDA198E5C69BC6EA76D1786ECEA5CB845DC2D9BBD6EC
Session-ID-ctx:
Master-Key: B1AF3801F0742D2EDB52B010EA2497B3D2AA7D38D65313D57CA0BCD67C59C902938E9F274B09BE95026441F313688179
Key-Arg : None
Start Time: 1150697367
Timeout : 300 (sec)
Verify return code: 21 (unable to verify the first certificate)
---


From this we see the root certificate is from Equifax. This certificate can be found in common root cert bundles but is not shipped by default on Nokia/Synbian phones. For reference here’s the Equifax root certificate.


-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----


The next step is to convert the Equifax certs to a format Symbian will accet. Start with putting it in a .pem file.

equifax.pem

Using openssl it can be converted to der format.


openssl x509 -outform DER -in equifax.pem -out equifax.der


equifax.der

The final step is to transfer these certificates to your phone. USB, IR, or Bluetooth will all work for this purpose. You’ll be prompted to add the certificate to your phone. Accepting this will permantly save the cert on your phone for future. Try connecting to gmail to ensure the certificate prompt/warning is no longer displayed.

ref ref2

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This entry was posted on Sunday, June 18th, 2006 at 11:05 pm and is filed under Gadgets. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.