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- Screenfile SCRAMBLE.SCN Screen# 01
-
- In this section of the documentation we will look at how to initiate data
- encryption. This is OPTIONAL and is only necessary if your computer is
- officially used by people who are not authorised to see payroll information, or
- if your computer is kept in an unlocked office where it might be used
- unofficially after hours by people working overtime.
-
- These procedures need only be done once per employee file to start the
- encryption process, after that it will be maintained automatically. However,
- for encryption to be maintained you must have already set up your own employee
- file (as opposed to testing PAYROLL USA with Anthistle Systems test employee
- file, otherwise when the test files are deleted the data encryption will stop
- and you will need to repeat this procedure with your own employees to restart
- it).
-
- First start PAYUSA in the normal way and if multiple configuration files exist
- select the one you wish to initiate encryption on. The above main menu will
- then appear. Select choice "F6 DOCUMENTATION / SLIDE SHOW / DOS SHELL"
-
- Screenfile SCRAMBLE.SCN Screen# 02
-
- When the above sub menu appears take choice "F4 SHELL TO DOS (TO EXECUTE DOS
- COMMANDS)"
-
- Screenfile SCRAMBLE.SCN Screen# 03
-
- Insert the first of our two distribution diskettes in drive A: and do a
- directory to verify that SCRAMBLE.EXE is on the diskette. Your screen will now
- look something like the above except your DOS copyright notice may look
- different, the drive letter in your DOS prompt may be C: instead of D: and the
- contents of the diskette directory may be different. If you have the trial
- version then SCRAMBLE.EXE may even be missing as for marketing reasons the
- trial has to fit on no more than 2 diskettes and we may be short on diskette
- space necessitating the omission of non essential or little used programs. (If
- so, you will receive any missing programs when you become a Registered User.)
- If SCRAMBLE.EXE is NOT on the distribution diskette then just type EXIT and
- press Enter to return to the PAYUSA menu.
-
- If SCRAMBLE.EXE is on the distribution diskette type A:\SCRAMBLE ENC and press
- Enter. Note the parameter " ENC" after the name of the program, this is to
- tell SCRAMBLE to ENCrypt the files. Note also we are not changing the active
- drive, we are including the path (A:\) to the program as a prefix to its name.
- DOS 3.xx or greater may be required for this method of running the program to
- work. We need to keep the hard disk the active drive because when SCRAMBLE
- starts it will look for the PAYUSA.CNF configuration file on the active
- directory, which in turn tells it where to find the data that is to be
- encrypted. You can easily check which version of DOS you are using by typing
- VER at the DOS prompt and pressing Enter.
-
- Screenfile SCRAMBLE.SCN Screen# 04
-
- SCRAMBLE will then encrypt the input data directory (which may be different to
- the D:\PAYIN\ shown in the above example).
-
- Screenfile SCRAMBLE.SCN Screen# 05
-
- SCRAMBLE will then encrypt the output data directory (which may be different to
- the D:\PAYOUT\ shown in the above example).
-
- Screenfile SCRAMBLE.SCN Screen# 06
-
- When SCRAMBLE returns to the DOS Prompt simply type EXIT and press enter to
- return to the PAYUSA menu.
-
- Screenfile SCRAMBLE.SCN Screen# 07
-
- Then press Esc to exit the sub menu and return to the main menu.
-
- Screenfile SCRAMBLE.SCN Screen# 08
-
- And from the main menu press F7 or Esc to exit back to DOS. Do not make any
- other selections from the menu yet. First we have to go back to DOS and restart
- PAYUSA so it can detect that it is dealing with encrypted files.
-
- This completes the one time start up procedure for using encrypted files. The
- next part of this section shows how encryption is automatically maintained,
- followed by a final part that shows how to discontinue encryption.
-
- Screenfile SCRAMBLE.SCN Screen# 09
-
- Start up PAYUSA again in the normal way.
-
- Screenfile SCRAMBLE.SCN Screen# 10
-
- PAYUSA will detect the encrypted files and display the above screen. This and
- the following two screens will be seen each time you use PAYUSA with encrypted
- files
-
- Screenfile SCRAMBLE.SCN Screen# 11
-
- SCRAMBLE un-encrypts the encrypted files on the input directory. The last
- character of the encrypted file name extension will be a graphic character.
-
- Screenfile SCRAMBLE.SCN Screen# 12
-
- Then SCRAMBLE un-encrypts the encrypted files on the output directory. The last
- character of the encrypted file name extension will be a graphic character.
-
- Screenfile SCRAMBLE.SCN Screen# 13
-
- Then the main PAYUSA menu appears. Now you can make any choice and run your
- payroll in the normal way.
-
- Screenfile SCRAMBLE.SCN Screen# 14
-
- When you are finished with your payroll session and exit from the main PAYUSA
- menu then PAYUSA will display the above screen.
-
- Screenfile SCRAMBLE.SCN Screen# 15
-
- Then SCRAMBLE will encrypt the input directory
-
- Screenfile SCRAMBLE.SCN Screen# 16
-
- Then SCRAMBLE will encrypt the output directory, your data is now safe if you
- lock up the diskette containing SCRAMBLE.EXE in a desk drawer or in your safe.
- SCRAMBLE.EXE can also be used to encrypt and decrypt other sensitive files of
- any type on your computer. Run it as a stand alone program from the DOS prompt
- with no parameters to see information on how to do this, and to see the
- restrictions and limitations of Anthistle Systems & Programming Ltd. liability
- concerning its use.
-
- This concludes the documentation of automatic detection and handling of
- encrypted payroll files. In the remaining screens of this section we will see
- how to discontinue automatic us of SCRAMBLE.
-
- Screenfile SCRAMBLE.SCN Screen# 17
-
- If you decide to discontinue data encryption it must be done directly from the
- DOS prompt for the data directories concerned, rather than in a DOS SHELL
- started from PAYUSA (because we have to defeat the automatic detection
- procedure before it begins, and it would already have begun if PAYUSA had been
- started). If you have only one set of employee files the data directories will
- most likely be \PAYIN and \PAYOUT (our defaults). If you have multiple
- configuration files and the one you want is started by selecting the SMITH.CNF
- configuration then the data directories are most likely \SMITH\PAYIN and
- \SMITH\PAYOUT . You can test this by doing a directory from the DOS prompt,
- example DIR \PAYIN or DIR \SMITH\PAYIN and the files will be listed on the
- screen. If they are encrypted files the last character of the filename
- extension will be a graphic character.
-
- Screenfile SCRAMBLE.SCN Screen# 18
-
- Insert your diskette containing SCRAMBLE.EXE in drive A: then change directory
- to the hard drive input payroll data directory, done in the above example with
- CD \PAYIN . Then type DIR and press enter to verify that the files listed are
- the ones you expect. If everything looks good, type A:\SCRAMBLE DEC and press
- enter. Note the active directory is the hard disk data directory, and we are
- executing SCRAMBLE from drive A: by prefixing its name with the path to where
- it resides (DOS 3.xx may be required to do this). Note also the parameter
- " DEC" after the program name, this tells SCRAMBLE to DECrypt the directory.
-
- Screenfile SCRAMBLE.SCN Screen# 19
-
- Because it cannot find the configuration file, SCRAMBLE does not know if it is
- processing payroll data or not. If we reply Y it will not decrypt the files
- but instead will display instructions for the normal use with payroll. This is
- not normal use, so we lie a little and reply N so it thinks these are not
- payroll files.
-
- Screenfile SCRAMBLE.SCN Screen# 20
-
- SCRAMBLE will display the file names and ask if it is OK to proceed. Now we can
- reply Y and the files will be decrypted (unscrambled).
-
- Screenfile SCRAMBLE.SCN Screen# 21
-
- The files will be listed one by one as they are decrypted, then when they are
- all done SCRAMBLE will terminate and return you to DOS.
-
- Screenfile SCRAMBLE.SCN Screen# 22
-
- Now we change directory to the output directory, in this example done with
- CD \PAYOUT , then we repeat exactly the same steps we did with the input
- directory.
-
- Screenfile SCRAMBLE.SCN Screen# 23
-
- Lie a little and reply N again on the above screen.
-
- Screenfile SCRAMBLE.SCN Screen# 24
-
- Reply Y on the above screen.
-
- Screenfile SCRAMBLE.SCN Screen# 25
-
- And the output files are listed as they are decrypted.
-
- Screenfile SCRAMBLE.SCN Screen# 26
-
- If at this point you do a directory display of the input and output directories
- then you will see that the last character of the filename extension is now back
- to normal (no longer a graphic) indicating that the file is no longer
- encrypted. Providing there are no encrypted files on either the input or on the
- output directories then the next time you use PAYUSA you will no longer be
- asked for the SCRAMBLE.EXE diskette when accessing these employees.
-
-