http://i2p-javadocs.i2p/net/i2p/crypto/DirKeyRing.html
Object clone , equals , finalize , getClass , hashCode , notify , notifyAll , toString , wait , wait , wait Constructor Details DirKeyRing public DirKeyRing ( File baseDir) Method Details getKey public PublicKey getKey ( String keyName, String scope, SigType type) throws GeneralSecurityException , IOException Cert must be in the file (escaped keyName).crt,
and have a CN == keyName.
This DOES do a revocation check.
CN check unsupported on Android....