Installing Self Signed smtp/imapd/pop3 Certificate on K800i Sony Ericsson

I own this beautiful K800i phonecell about 3 years more or less. The great things is K800i’s email client support for smtp authentication, imap, pop3, ssl, tls, port customization. I will show you how to plant my self signed smtp server certificate into K800i

First of all we need to copy the certificate to have a .cer extension. The phone uses this as the clue that the file is a certificate and will ask if it is to be installed.

Self signed cert for ougoing SMTP

# cd /etc/postfix
# cp cacert.pem smtp.cer
# more smtp.pem   
-----BEGIN CERTIFICATE-----
MIIDvzCCAyigAwIBAgIJAK6WD/vgjFZcMA0GCSqGSIb3DQEBBAUAMIGcMQswCQYD
VQQGEwJJRDEUMBIGA1UECBMLREtJIEpha2FydGExEDAOBgNVBAcTB0pha2FydGEx
---- snip ----
---- snip ----
---- snip ----
jUSsVnNPHYewsKdKRfzoivMqQgI+IIzw5NXiE78lpmAsZOdMfkR4U+dpTr87mCmE
wcBi07++mqLhDvYvcGw4ol1Yp7sX4NgMbTrZ6APpaI8l4Rx4jb2p7UXU0YGx7aPV
idZr
-----END CERTIFICATE-----

Self signed cert for imap/pop3

# cd /usr/lib/courier-imap/share
# grep -B 17 "END CERTIFICATE" imapd.pem > imapd.cer
# more imapd.cer
-----BEGIN CERTIFICATE-----
MIIC7TCCAlagAwIBAgIJAPytD1n7bAyqMA0GCSqGSIb3DQEBBQUAMIGsMQswCQYD
VQQGEwJJRDEMMAoGA1UECBMDSktUMRAwDgYDVQQHEwdKYWthcnRhMRwwGgYDVQQK
---- snip ----
---- snip ----
---- snip ----
AEgiPdQBeR9AX6le9Dh7UWxDZUBq7Lmuv2IpnArLfs2GpWvJ4t1kQKpmyU+3HIJM
eWEO/rg+5B4qR+dBv2PhrXTihBhZH7hXvYeziRGte2RaXUyq9xHNLJlp3TB4/hiW
q6z+pFlkpttKiQVmbd3ELtdsgK6DP9PVeVpY/J4U806q
-----END CERTIFICATE-----

Do it same way for pop3 certificate

# grep -B 17 "END CERTIFICATE" pop3d.pem > pop3d.cer
# more pop3d.cer
-----BEGIN CERTIFICATE-----
MIIC7TCCAlagAwIBAgIJAIvLXVMuVgpEMA0GCSqGSIb3DQEBBQUAMIGsMQswCQYD
VQQGEwJJRDEMMAoGA1UECBMDSktUMRAwDgYDVQQHEwdKYWthcnRhMRwwGgYDVQQK
---- snip ----
---- snip ----
---- snip ----
2N0CAwEAAaMVMBMwEQYJYIZIAYb4QgEBBAQDAgZAMA0GCSqGSIb3DQEBBQUAA4GB
AIptayGk8jbeXzvo9YBi2y/on1Z0zzqMuuvyTAX5n7+f18WqK26Y0De+PMgzluN2
rWFHXMGhHqlxbud948LOPFl+2RrAizVsDRWhIxzOKrzDGtM8nP81qVK+w7pxq0Gd
rIocWj/SF/xqR+1ynsi7dEthuiKuYwVeOgvnVJ2fB1HD
-----END CERTIFICATE-----

Now we can download those 3 certificates from server using scp or any good ftp tool

Next step is planting self signed certificates to K800i, We can use bluetooth, In my case i used MyPhoneExplorer, using USB data cable. You can download the latest version here http://www.fjsoft.at/en/downloads.php

Before connecting K800i to computer, don’t forget install K800 usb driver.or MyPhoneExplorer won’t listing k800 usb device.

Here is the step:

• Open MyPhoneExplorer
• Goto menu FIle then klik “Connect or F1” (MyPhoneExplorer will automatically detect K800i)
• Click on Files (at left menu) ther’s sub menu will expand
• Click on application (i Know this supposed to be java apps installer tool, but it also work for installing certificates, in mycase/hopefully yours too).
• Click on Cup Image on the top(install java application)
• It will pop “open Dialog” then pick one of our certificates we have downloaded. e.g emtp.cer
• Look at the phone, K800i will pop Dialog asking us if we agree to install certificate, click left navigation bar(yes) on the phone.
• Do it same way for others certificates.
• done

To check the certificate do Settings > Security > Certificates > Trusted certificates. The new certificate will appear in the list.

Now we can Using IMAP with tls/ssl, SMTP outgoing with tls/ssl (using authentication). I will discuss it in another story 🙂