Obtains the default KeyManagerFactory algorithm name.

The default algorithm can be changed at runtime by setting the value of the "ssl.KeyManagerFactory.algorithm" security property (set in the Java security properties file or by calling java.security.Security.setProperty(java.lang.String, java.lang.String)) to the desired algorithm name.

Returns: the default algorithm name as specified in the Java security properties, or an implementation-specific default if no such property exists.