See http://android-developers.blogspot.com/2013/08/some-securerandom-thoughts.html

Since this library appears to be directly using numbers from a default-initialized SecureRandom, it should not be used on Android versions below 4.4 without a separate intialization step.

Either the fix should be applied in the code here where applicable (via reflection, probably, to avoid borking non-Android environments), or there should be a big disclaimer and a minimum Android recommendation of 4.4 rather than 2.3.3 for using this library.