(Software, full documentation and example ballot files)
(Page down for other downloads -- source code and a verification program.)
==== SAVIOCdp.EXE and SAVIOCdp.ZIP files were last updated 2007 December 2.
Each file is relatively small, so they don't take long to download.
Download either of these files and click on it to cause all of the component
files to be expanded into C:\SAVIOC\ or any subdirectory (folder)
you choose ....
This always should work (and is more nearly automatic) with the
first (.EXE) file; it will work with the second (.ZIP) file only if
your computer has an "unzip" utility installed.
[Note: Years ago, one person using
Windows XP reported that the .EXE file would not expand on his system;
however, no one else has reported any such problem, and it has worked
successfully on Windows 95, 98, 2000 and XP. Please
let us know if you encounter any similar difficulties.]
Once the files are expanded, click on the one
named _READ_ME.TXT to start.
This package is being improved regularly, but it has been eminently usable
since mid-2001. It has undergone
extensive public testing -- from 2002 November 10 (when formal recording
of tests began) until 2007 November 26 (when this paragraph was written)
there have been
6512 ballots cast, on 353 diskettes, in 99 different demonstrations.
Test groups have included grade school children, senior
citizens and voters who just finished voting in a public election. SAVIOC
has been changed many times as a result of such tests or new information,
generally to improve usability, flexibility or security. There remain
a few possible improvements that have been noted, but not yet incorporated.
It is virtually
impossible to test non-trivial software exhaustively,
but SAVIOC never
has lost or misattributed
votes in any of its tests going back to early 2001, and rarely has had
an event that required it to be restarted.
If you should happen to discover an error in the package, or have any
suggestions for improving it, please
Five distinct additional download packages are prepared or contemplated.
(Not all are available yet.)
Package 4 is particularly valuable because SAVerify can
be used to verify that a file or entire diskette is what it is supposed to be.
(Click on any of the numbered, indented, blue, underlined links below to
download a package of additional files. Approximate sizes are indicated.)
1. The first package contains all the source code for the programs comprising
the SAVIOC Voting System. (SAVIOC.EXE, HI-MEM.EXE and KBD-CTRL.COM)
2. The second package includes a program (SAVmerge.exe) that can
be used to merge the results from multiple SAVIOC diskettes into a single
set of summary files.
3. The third package is the source code for SAVmerge.
4. The fourth package includes a program (SAVerify.exe) that uses
"hashing" to generate unique "fingerprints" for any file or an entire diskette.
SAVerify can be used by anyone to assure that no one has tampered with SAVIOC
programs or diskettes in any way. No program can
truly verify itself automatically. Nevertheless, SAVerify provides a
way for any individual to run a personalized test just after downloading it,
confirm later that no subsequent changes have been made to SAVerify itself.
5. The fifth package is the source code for SAVerify.
Each download package contains a file
This always is a good place to start.