scrypt-1.2.1/lib/README

   1 The source code under this directory is taken from the client for the
   2 Tarsnap online backup system (and released under the 2-clause BSD license
   3 with permission of the author); keeping this code in sync with the Tarsnap
   4 code is highly desirable and explains why there is some functionality
   5 included here which is not actually used by the scrypt file encryption
   6 utility.