How do you access Android credential storage?

In Settings > Location & Security there is a section that allows the user to import certificates. There is also an option, "Use secure credentials" that "Allow[s] applications to access secure certificates and other credentials". I can find no mention of how to get to this in the documentation, and very few mentions of it online aside from people using it to connect to certificate-secured wifi networks. One of the only pertinent things I found was a post claiming that accessing these certificates was actually impossible for regular apps. Is this true? Does anyone know how to access these certificates if it isn't or documentation somewhere that states it is no开发者_运维百科t possible?

Take a look at this Android Issue for some discussion on the topic: http://code.google.com/p/android/issues/detail?id=11231

The Settings screen for installing root certificates can only be used for VPN and WiFi, unfortunately.