IV workaround and miscellaneous fixes

- Created a iv.txt file to export and import the IV for decryption
- Set defaults to be more aligned with normal usage (non-verbose,
non-looping)
- Corrected options to correctly input the verbose flag
- Cleaned up FileSources to eliminate unneeded variables
- Corrected errant output if not running in performance or verbose mode
- Added binary flag support to keygen