How can I access user-installed keys and certificates from my Android app?

Question

I've been struggling to consume user installed identity CA certs from a p12 file on an SD card. The certs and keys are installed using the Secure Credential Storage (Location & Security > Install from SD card).

I haven't found any documentation stating the location if the keys and certificates once imported. I tried to create an instance of a TrustManagerFactory with no luck, it just contained all the pre-installed SSL certificates.

Creating an KeyStore with the default parameters doesn't seem to work either. Any suggestions would be much appreciated!

Answer 1

Take a look at the JavaMail Crypto and Bouncy Castle combo.

They allow you to import the p12 file using a file input stream and let you deal with it accordingly.

It can be tricky to get set up and if you get frustrated, there is a 30 day free trial with Chilkat developed specifically for android which I can confirm works perfectly.