How to convert PFX certificate to JKS format
Use ikeyman.bat provided by IBM as part of Websphere and other IBM products, or similar key management utility for your Java platform. It has capability to import PKCS12 certificates (which exactly what PFX is) and save it as Java Key Store.
Or Another possible way consists of 3 steps conversion: (prerequisite – having JDK installed on the machine) :
1. Extract from PFX file key and cert in PEM format
openssl pkcs12 -nocerts -in %_PFXFILE% -out %_KEYPEM% -passin pass:%_PASSWD% -passout pass:%_PASSWD%openssl pkcs12 -clcerts -nokeys -in %_PFXFILE% -out %_CERTPEM% -passin pass:%_PASSWD
2. Convert both cert and key from PEM to DER format
openssl pkcs8 -topk8 -nocrypt -in %_KEYPEM% -inform PEM -out %_KEYDER% -outform DER -passin pass:%PASSWD%openssl x509 -in %_CERTPEM% -inform PEM -out %_CERTDER% -outform DER
3. Use java code to combine Cert and Key to JKS store format
java ImportKey %_KEYDER% %_CERTDER% %_KEYSTORE% %_ALIAS% %_JKSPASSWD%
To automate this process I have created batch utility you could use.
Download “How to convert PFX to JKS.doc” file from the right side bar Box.net widget, extract all the files in the attachement, and set JAVA_HOME to your JDK installation, then run the bat file:
>pfx2jks.bat <pfxFile> <pfxPassword> <JksPassword>
pfxFile – pfx file you would like to convert
pfxPassword – password set on pfx file (provided to you along with pfx)
jksPassword – password you would like to set on JKS store
Here is the sample output:
C:\certtests\pfx2jks>PFX2JKS.bat ..\certs\intesbtest.pfx xxxx testjks
Using JAVA_HOME: c:\IBM\WID62\jdk
To JKS store: C:\certtests\certs\intesbtest.jks
With Password: xxxx
MAC verified OK
Key extracted in PEM format
MAC verified OK
Cert extracted in PEM format
Key converted to DER format
Cert converted to DER format
Using keystore-file : C:\certtests\certs\intesbtest.jks
One certificate, no chain.
Key and certificate stored.
Java Keystore C:\certtests\certs\intesbtest.jks was created successfully….. with password testjks
More useful SSL information on http://www.sslshopper.com/article-most-common-java-keytool-keystore-commands.html