From: Subject: KetuFile Master Help Doc Date: Fri, 10 Feb 2006 13:09:33 -0600 MIME-Version: 1.0 Content-Type: multipart/related; boundary="----=_NextPart_000_0000_01C62E43.3C4773C0"; type="text/html" X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01C62E43.3C4773C0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Content-Location: file://E:\D1\ketumail\KetuFile_Master_Help.html KetuFile Master Help Doc


KetuFile Master Help



Using The KetuFile Help System =
Master Help File
MiniHelp Files

1.0 Introduction
1.1 General
Kryptographic Encoding and Transfer = Utility - KETU=20
KetuFile
KetuFile Standard Version =
KetuFile Pro Version
KetuMail
KetuMail Standard Version =
KetuMail Pro Version
KetuFile and KetuMail Licensing =
1.2 What Is Encryption ? =
1.2.1 Introduction To Encryption =
1.2.2 Encrypting Content Files =
1.2.3 Encrypting Executables =
1.3 Applications Of KetuFile =
1.3.1 Email Attachments =
1.3.2 Archiving
1.4 Install And Try Before You Buy =

2.0 Installation and Specifications =
2.1 Operating Systems
2.2 System Requirements
2.3 KetuFile Models
2.3.1 Models
2.3.2 Allowable Decryption =
Any Model Decrypts Any Encrypted File=20
2.4 The .ktu File Name Extension =
Turn OFF 'Known File Extension' Hiding = Is=20 Recommended
2.5 KetuFile Setup.EXE and Setup_beta.exe =
2.5 Revision Information Rev.Txt =
2.6 Revision Number

3.0 Quick Start
3.1 Registering
Run The KetuFile Application =
3.2 Encrypting
Run The KetuFile Application (If Not = Already Running)=20
Select File To Be Encrypted - ORIGINAL = File=20
Enter A Key
Start Encryption
Send Encrypted File As An Email = Attachment=20
3.3 Decrypting : Manual And Automatic=20
Manual Approach To Decrypting - = Run The=20 KetuFile Application (If Not Already Running)
Select Decryption
Select File To Be Decrypted - ORIGINAL = File=20
Enter A Key
Start Decryption
Run Decrypted File
Automatic Approach To Decrypting=20
Automatic Approach To Decrypting An = Email=20 Attachment
Run Decrypted File

4.0 Using KetuFile - Detailed = Instructions=20
4.1 Main Dialog
A General Note On 'Dialogs' =
A General Note On This Help Instruction=20
Begin Description Of Controls/Boxes On = This=20 Dialog
'Edit' Boxes For File Name/Folder =
ORIGINAL File and RESULTING File =
Button, Browse For File
Button, Browse For Folder =
Check Box, Use The Same Resulting Folder = As The Last=20 Time You Ran KetuFile
Button, MiniHelp
Button, Settings
Button, Key
Button, Encrypt Now or Decrypt Now =
Button, Select Encrypt OR Decrypt =
Button, Action/Email =
Button, Run Decrypted File =
Button, Info
Button, OK Quit Program
Begin Description Of Step-By-Step = Operation Of=20 This Dialog
Registration
Encrypt Or Decrypt
Encryption: IMPORTANT NOTE =
Encryption: ORIGINAL File =
Encryption: RESULTING File =
Encryption: Key
Encryption: Begin Actual Encryption =
Encryption: Send Encrypted File As = Email=20 Attachment
Decryption: ORIGINAL File =
Decryption: RESULTING File =
Decryption: Key
Decryption: Begin Actual Decryption =
Decryption: Run Decrypted File =
Decryption: Other Notes
4.2 Key Dialog
A General Note On 'Dialogs' =
A General Note On This Help Instruction=20
Begin Description Of Controls/Boxes On = This Dialog=20
'Edit/Display' Box For The Key =
'Edit' Box For Manually Entering=20 Encryption/Decryption Key
Check Box, See Key
Display Of Nickname For The Current Key=20
List Box, Load Previous Key, Nicknames=20
Button, Delete Selected Nick =
'Edit' Box, Enter NickName, No Spaces=20
Button, Save Key Now
Button, Minihelp
Button, OK
Button, Cancel
Button, ClearKey
Display Box, Key(bits)
Begin Description Of Operation Of This = Dialog=20
Introduction
Entering A Key Manually
Loading A Key That Was Previously Saved = With A=20 Nickname
Seeing Or Hiding The Key =
Clearing A Current Key
Saving A Current Key With A Nickname=20
Delete A Nicknamed Key That Is Saved On = Your Hard=20 Disk
Completing The Key Entry Process =
4.3 MiniHelp Dialog
4.4 Settings Dialog
A General Note On 'Dialogs' =
'OK' And 'Cancel' Buttons =
'Edit' Box For Registration Key =
To Exit From Dialog Without Entering = Registration=20 Number
Use Notepad.EXE Check Box =
Outbound Email Integration =
MAPI
Alternate Email Approach (Manually = Configured),=20 General Info
Finding The Email Default Client=20
Alternate Email Approach, Command=20
Alternate Email Approach, Switches =
Alternate Email Approach, Full = Examples=20
Action, General Info =
Action, Command
Action, Switches
Action, Checkbox, Use Process.Cmd=20
Action, Use Process.Cmd and 'Final' = Command=20 Files
Action, Detailed Examples =
Action Examples: Copy1, Copy Encrypted = File, Same=20 PC
Action Examples: Copy1a, Copy = Encrypted File, Same=20 PC, Process.Cmd
Action Examples: Copy2, Copy Encrypted = File, To=20 Another PC
Action Examples: Copy2a, Copy = Encrypted File, To=20 Another PC, Process.Cmd
Action Examples: Copy3, Copy Encrypted = File, Same=20 PC, Specify Destination Within Action Edit Box =
Action Examples: FTP1, Send Encrypted = File by FTP=20 To A FTP Server, Anywhere In The World
4.5 Action/Email Dialog =

5.0 Security Considerations =
Introduction
What Is A Key?
Attacks
Attacks - Brute Force
Attacks - Intelligent
Evolution Of Attacks
Why KetuFile?
Robustness Of AES
Robustness Of KetuFile
Back Doors
Key Recovery
Some Other Important Areas Of Security=20
Key Selection
Site Security - Computer =
Telephone Security
Wireless Intrusion
ELINT - Electronic Intelligence =
To Be Confident ...

6.0 Contact Information, Tech Support=20



Using The KetuFile Help System =
Master Help File
You are currently viewing the Master Help File. The = Master Help=20 File is a HTML file that is viewed by a traditional Web browser = such as=20 Internet Explorer or Navigator. It can be viewed online at:=20 www.ketufile.com or it can be viewed on your computer from the = copy that=20 is installed with the KetuFile program. The Master Help file is a = single=20 HTML file so that you can easily download it or move it around as = you need=20 to. The file name is: KetuFile_Master_Help.html
The Master Help file can be launched from = the opening=20 Dialog when you run the KetuFile program. This Dialog is called = the Main=20 Dialog and is Dialog #1. The Master Help file can also be viewed = by=20 double-clicking on the file in your KetuFile installation = directory, or=20 running your browser (Internet Explorer, Navigator, etc.) and = using the=20 File menu, choosing Open, then navigating to the KetuFile = directory to=20 select the Master Help file.
MiniHelp Files
MiniHelp Files are associated with specific Dialogs. They = are=20 accessed by clicking the MiniHelp button in any particular Dialog. = These=20 are simple text files, so you can also view them simply by = double-clicking=20 on them. Your operating system will recognize the .txt extension = and=20 launch a program such as Notepad to view them.

1.0 Introduction
1.1 General
Kryptographic Encoding and Transfer = Utility -=20 KETU
The KETU = software products=20 are intended to provide security and file transfer for information = files=20 and executable files that are commonly found on a personal = computer (PC).=20 This software is designed to run on PCs that use the Windows(tm) = operating=20 system.
All Ketu = products use the=20 latest standard for encryption, the Advanced Encryption Standard = (AES).=20 AES allows encryption keys up to 256 bits. Certain Ketu products = allow 512=20 bits, using double AES.
NOTE: The=20 KetuFile programs accepts keys that comprise uppercase and lower = case=20 letters and numbers. This results in an approximately 4-fold = reduction of=20 key states. Therefore a so-called KetuFile 256 bit key has = approximately=20 2^252 states. A so-called KetuFile 512 bit key has approximately = 2^508=20 states.
The approximate = number of=20 possible keys for a 256 bit KetuFile key ( 2^252 ): =
a Trillion x Trillion x Trillion x = Trillion x=20 Trillion x Trillion
The = approximate=20 number of possible keys for a 512 bit KetuFile key ( 2^508 ):=20
a Trillion x Trillion x = Trillion x=20 Trillion x Trillion x Trillion x Trillion x Trillion x Trillion x = Trillion=20 x Trillion x Trillion
A = Trillion is=20 defined (in the U.S.) as: 1,000,000,000,000
Two basic products, each with two variants, comprise the = KETU=20 product line.
KetuFile
This product allows a PC user to encrypt any file that = resides on a=20 PC. The user runs the KetuFile software and then selects, through = a=20 standard GUI interface (graphical user interface) the file that is = to be=20 encrypted. In addition, the user must enter an Encryption Key, = which is a=20 series of numbers and/or letters.
KetuFile will then create an encrypted version of the = original=20 file. The original file is left in-tact on the user's hard disk.=20
The user may then = proceed with a=20 number of other actions depending on the purpose of the = encryption. For=20 example, the user may place the encrypted file on some backup = medium, such=20 as tape. The user may send an email to another party and attach = the=20 encrypted file. The user must convey the Encryption Key to the = recipient=20 of the email by some means other than the email itself. Examples = of this=20 include: phone, fax, courier.

KetuFile Standard Version =
This version of Ketu allows encryption of = one file at=20 a time. The maximum encryption key length is 256 bits ( 2^252 = possible=20 keys).

KetuFile Pro Version
This version of Ketu allows encryption of = several=20 files at one time. The maximum encryption key length is 512 bits ( = 2^508=20 possible keys).

KetuMail
This is an encryption and send-mail client. It has the = basic=20 abilities of the of the KetuFile product but also has a built in = SMTP=20 (simple mail transfer protocol) client capability. This is a = future=20 product - it is not yet available.

KetuMail Standard Version =
This version of Ketu allows encryption = and sending of=20 one file at a time. The maximum encryption key length is 256 bits. =

KetuMail Pro Version
This version of Ketu allows encryption = and sending of=20 several files at one time. The maximum encryption key length is = 512 bits.=20

KetuFile and KetuMail = Licensing
These products are "desktop" = applications. As such=20 they are simple stand-alone clients. A single license may be = installed on=20 a single machine.

1.2 What Is Encryption ? =
1.2.1 Introduction To = Encryption
With regard to files on a computer, = encryption can=20 be: a] the process of hiding or obscuring the content of the = files, or b]=20 disallowing the execution of files that are termed 'executables'.=20
There are many different = types of=20 files on a computer. Common examples of files that contain = 'content' are:=20 text files, word processor files, and spread sheets. Common = examples of=20 files that are 'executable' are: word processor application = programs,=20 utility programs such as image viewer programs, spread sheet = programs,=20 etc.

1.2.2 Encrypting Content Files =
Many times information in a word = processor file can=20 be highly confidential. An example is a common letter to another=20 individual or company. It is often desirable to send this letter = as an=20 email attachment to an associate or client. To ensure that the = risk of=20 compromise of the letter's contents is minimized, encryption is = used.=20 Encryption for this type of 'content' file means 'scrambling' the=20 characters in the letter in such a way that the result is = senseless. It is=20 important to understand, that when KetuFile encrypts a file, it = actually=20 creates a second file. This second file is the encrypted = (scrambled) file.=20 The original file is left intact on the computer's hard disk. = KetuFile=20 will give this second file a file name that is highly similar to = the=20 original file name. KetuFile will add 4 characters to the end of = the=20 original file name to form the encrypted file name. It will add = .ktu=20
Example: If the original = file is=20 info.doc, then the second file, the encrypted file would be = info.doc.ktu=20
This type of encrypting = can be=20 performed for almost any type of file on a PC that is operating = with one=20 of the Operating Systems (example Windows(tm) NT) for which = KetuFile was=20 designed to run.

1.2.3 Encrypting Executables =
There may be reasons to protect a file on = a PC which=20 is an executable. This means, scrambling the executable file so = that it=20 cannot run on the computer. As mentioned in the previous = paragraph, when=20 KetuFile encrypts a file, it actually creates a second, scrambled = file.=20 The original file is left intact on the computer's hard disk. = Example: If=20 the original file is comp.exe, then the second file, the encrypted = file=20 would be comp.exe.ktu

1.3 Applications Of KetuFile =
Following are two obvious examples of the = use of=20 KetuFile for encrypting files.

1.3.1 Email Attachments =
KetuFile can be used to encrypt files = before they are=20 transmitted to another person, organization or system. By = encrypting the=20 file(s), the information contained therein will not be available = to an=20 individual or entity that intercepts or somehow gains access to = that=20 encrypted file. A very common example of this is attaching files = to an=20 email. In this case, a sensitive file would be encrypted first. = Then the=20 encrypted file would be attached to the email for transmission. A = key is=20 used when encrypting a file. The party receiving the email would = have to=20 have the same key in order to decrypt the file. =

There is a convenience feature associated = with saving=20 keys with a nickname. When you encrypt a file, and the key has = been=20 saved-to or loaded-from a nickname, then the nickname is placed in = the=20 header of the encrypted file. This is NOT the key. It is simply a = 'name'=20 for the key that has been placed in the header. Later, when the = encrypted=20 file is to be decrypted, KetuFile will look in the header of that=20 encrypted file to see if there is a nickname for a key. If there = is, then=20 KetuFile will look on your hard disk for such a nicknamed-key. If = KetuFile=20 finds such a nicknamed-key then it will load that key.=20

This provides an = efficiency when=20 transferring a file. As an example, assume that you are sending = documents=20 as email attachments to the xyz company. By the use of telephone, = fax,=20 courier or personal contact, you tell your contact person at the = xyz=20 company that the key you will be using (a random sequence of = letters and=20 numbers), and you tell him/her that you will be saving that key on = your=20 hard disk with the nickname xyzco.

Your contact person at xyz company manually enters that = key into=20 his/her KetuFile program (in the Key Dialog) and also uses the = nickname=20 xyzco. He/she does this just one time. Now your contact person = receives an=20 email (with attachment) from you (for almost all email programs) = he/she=20 can simply click on the attachment. The email program will tell = the=20 operating system (such as Win2k, etc.) to launch KetuFile and load = the=20 attached file. KetuFile will look in the header of that file, find = the=20 nickname, then load the nicknamed-key into the Key Dialog. You = then have=20 only to click, click, to start the decryption. =

As mentioned before, when typing a = nickname for a=20 key, just enter a name, such as xyzco. Don't add any punctuation = or=20 spaces. Don't worry about the .key extension. KetuFile will take = care of=20 that for you.
KetuFile = makes it easy=20 to attach files to outgoing emails using your existing email = client=20 and Ketufile makes it easy to decrypt and read/use email = attachments,=20 again, using your existing email client. Furthermore, once you = have=20 decrypted an incoming email attachment, KetuFile makes it easy to=20 read/review/run that attachment.

1.3.2 Archiving
KetuFile can encrypt a file that is to be stored for = archival=20 purposes. By doing so, the storage location and infrastructure = does not=20 need the same degree of physical security as if the stored file = were not=20 encrypted. As more comapnies use the services of Storage Networks, = the=20 need for encryption of the files will increase.

1.4 Install And Try Before You = Buy=20
Anyone can download and install = the=20 KetuFile DEMO program and try it out. This will give a user an = in-depth=20 idea of what KetuFile can do. This also serves the important = purpose of=20 testing the compatibility of KetuFile with the particular PC = hardware and=20 PC operating system version. Download and install KetuFile before=20 purchasing a license for it.

2.0 Installation and = Specifications
2.1 Operating Systems =
KetuFile is designed for the Windows(tm) = family of=20 operating systems.
Win = 98, NT 4.0=20 SP6a, 2000, XP (tms)
KetuFile will=20 run on certain of the later versions of Win95 that have long file = name=20 support.
Please = download, install=20 and run KetuFile as a DEMO program, prior to purchasing a license = for it,=20 regardless of the operating system.
KetuFile was not written to run on the Mac(tm) operating = system.=20 Nevertheless it may be of interest to mention that, some users = have=20 Virtual PC running Windows on their Mac and report that KetuFile = runs=20 without problem. KetuFile can be downloaded, installed and run, = prior to=20 purchasing a license for it.

2.2 System Requirements =
- RAM: 10 megabytes
- HD: 10 megabytes
- Video=20 Resolution: 800 x 600 minimum

2.3 KetuFile Models
2.3.1 Models
There are 3 models of KetuFile. They are: DEMO, Standard, = and Pro.=20 These models allow the following capabilities.
Maximum Allowed Sizes For These Files = (Encryption):=20
KetuFile Demo 100 = kilobytes=20
KetuFile Standard 10 = megabytes=20
KetuFile Pro 2 gigabytes =
Maximum Allowed Size Of = Key:=20
KetuFile Demo 8 bits=20
KetuFile Standard 256 = bits=20
KetuFile Pro 512 bits=20
NOTE: See the = Introduction section=20 above for more detail on the number of possible keys with the = KetuFile 256=20 Bit keys and the KetuFile 512 Bit keys.

2.3.2 Allowable Decryption =
Any Model Decrypts Any Encrypted = File=20
The marketing philosophy behind = the=20 KetuFile product is that the decryptor is essentially free. A DEMO = model=20 KetuFile (download for free) can decrypt an encrypted file that = has been=20 encrypted by KetuFile DEMO or Standard or Pro model. A user only = needs to=20 download and install the DEMO program, then he/she can decrpyt=20 KetuFile-encrpyted-files that were encrpyted with any of the = license=20 versions.
This important = functionality means that a user can 1] purchase, say, a KetuFile = Pro=20 license, 2] encrypt a sensitive file with a 512 bit key, 3] send = this=20 encrypted file as an email attachment to an associate who has not=20 purchased KetuFile, and 4] tell the associate to download and = install the=20 free DEMO version of the KetuFile program and decrypt the file = that was=20 received as an encrypted email attachment.

2.4 The .ktu File Name = Extension
When KetuFile is installed, the .ktu file = name=20 extension is registered with the operating system. The .ktu = extension=20 exists on files that you have encrypted with KetuFile. The purpose = of=20 registering a file name extension with the operating system is to = allow=20 the user to double-click on such a file and have the operating = system=20 launch the correct application. In the case of KetuFile, this = means that=20 if KetuFile has been properly installed on your system, you can = simply=20 double-click on an encrypted file and have it launch the KetuFile=20 application program.

Example:=20
Assume there is a file = on your hard=20 disk named: info.doc.ktu
Using your=20 "Windows My Computer" or your "Windows Explorer", you may simply=20 double-click on info.doc.ktu and your operating system (Win 98, = NT, Win=20 2000, XP, etc.) will run the KetuFile program and pass the = info.doc.ktu=20 file to it. KetuFile will then start running and load the = info.doc.ktu=20 file for you. This is described in greater detail in the Quick = Start=20 section of this help document where two important topics are = discussed: a]=20 Automatic Approach To Decrypting, and b] Automatic Approach To = Decrypting=20 An Email Attachment.

Turn OFF 'Known File Extension' Hiding = Is=20 Recommended
Your = Operating=20 System shows you the files on your hard disk using "Windows My = Computer"=20 or "Windows Explorer". When you are viewing the files you can set = a number=20 of 'viewing options'. One of the options is for Windows to hide = the=20 extension of the file name, where the extensions are 'well known'. =

For example, if a = file name is:=20 Resume.DOC
Windows may = show this=20 just as: Resume
Since = KetuFile is a=20 properly installed application program, its file extension (ktu) = is=20 registered and therefore Windows classifies it as 'well known'. We = strongly recommend that you do not use this hiding feature. = By not=20 using this hiding feature you will always clearly see, for = instance, a=20 word processor document with it's .DOC file name extension, and an = encrypted version of that same file with it's .DOC.KTU file name=20 extension.

How you = turn this=20 feature off will vary with the operating system. This is something = your=20 Computer System Administrator can help you with.
In Windows NT, when you are looking at, = say, My=20 Computer display of the files on your hard disk, you will select = the View=20 pull down menu, select the Options menu item, then click the View = tab.=20
In Windows XP, when you = are looking=20 at, say, My Computer display of the files on your hard disk, you = will=20 select Tools, then Folder Options.

2.5 KetuFile Setup.EXE and = Setup_beta.exe=20
When KetuFile is downloaded = from the=20 KetuFile site or an authorized distributor's site, it comes as a = single=20 image. This means that the KetuFile program, Help files and = installation=20 wizards are all contained within this single file. The name of the = file=20 for public releases is Setup.EXE. The name of the file for Beta = versions=20 is Setup_beta.EXE.

This=20 Setup.exe (or Setup_beta.exe) file should be placed in a folder by = itself,=20 then executed. The installation wizard will then walk you through = the=20 install process.

If = you already=20 have a version of KetuFile installed, you should use the Windows = operating=20 system facility (Add/Remove Programs/Software) to remove the = current=20 version of KetuFile. Re-install the new version into the SAME=20 folder/directory. Your previous settings will be preserved, = including=20 various preferences and Keys.

2.5 Revision Information = Rev.Txt
A file is included with the installation = that=20 comments on the development status of the version of KetuFile that = was=20 just installed.

2.6 Revision Number
When the KetuFile program is running you = can click on=20 the 'Info' button to see various information about KetuFile, it's=20 installation on your computer and any files that you have prepared = for=20 decryption.
The Revision = Number is=20 of the form: x.,y,z,w
x = is the Major=20 Revision Number
y is the = Minor=20 Revision Number
z is a = Build Number=20 that we usually don't use at all. It is reserved for future use.=20
w is the Build Number=20
The Build Number is an = odd number=20 for Beta versions or pre-releases. The Build Number is an even = number for=20 general (public) releases.

3.0 Quick Start
3.1 Registering
NOTE: If you are trying out the KetuFile program in the = DEMO mode,=20 just skip this registration (Section 3.1), but remember that you = can only=20 encrypt a small file (100 kilobytes max.) and only use a key of 8 = bits (8=20 bits =3D 1 character).

Run The KetuFile Application =
You may use the Windows 'Start' button, = then select=20 'Programs' to find the KetuFile start shortcut or double click on = the=20 Desktop KetuFile shortcut or double click on the KetuFile.EXE icon = in the=20 KetuFile install directory.



Click the Settings button. This will take = you to the=20 Settings And Registration Dialog (Dialog 4). Type in the = Registration=20 number in the box provided. Click the 'OK' button. =
You will be presented with a registration = status=20 Message Box. Click the 'OK' button on this box and this will take = you back=20 to the Main Dialog.

3.2 Encrypting
Run The KetuFile Application (If Not = Already=20 Running)
You may use = the Windows=20 'Start' button, then select 'Programs' to find the KetuFile start = shortcut=20 or double click on the Desktop KetuFile shortcut or double click = on the=20 KetuFile.EXE icon in the KetuFile install directory. =



Select File To Be Encrypted - ORIGINAL=20 File
On the KetuFile = Main Dialog=20 (Dialog 1) click the 'Browse For File' button and navigate to the = file=20 that you want to encrypt and double click on that file. Accept the = RESULTING file that KetuFile suggests.

Enter A Key



On the KetuFile Main Dialog (Dialog 1) = click the=20 'Key' button. Now, on the Key Dialog (Dialog 2), type in a key in = the=20 upper edit box as a sequence of random numbers and letters. = If you=20 want to see the key you are typing, click the 'See Key' check box. = Do not=20 paste a key in from the Windows clipboard.

If you want to save the key that you have = entered,=20 type a nickname for it in the lower right box then click the 'Save = Key=20 Now' button. When entering a nickname, just type a name with no = spaces or=20 punctuation such as: xyzco or jsmith. KetuFile will take care of = adding=20 the .key extension. It is recommended that you always save a key = to a=20 nickname to make subsequent decrypting faster. =

If you have previously saved a key then = you don't=20 have to type it in again. You can just double click on the = nickname in the=20 box on the lower left.
Now click=20 'OK' to indicate that you are satisfied with the key and this will = take=20 you back to the Main Dialog (Dialog 1).

Start Encryption
Click the 'Encrypt Now' button.
The status of the encryption will be shown on the lower = left of the=20 Dialog.
Remember: = KetuFile does not=20 alter the ORIGINAL file that you are encrypting. That file is left = in-tact=20 on your hard disk. KetuFile has created a new file that is the = encrypted=20 file.

Send Encrypted File As An Email=20 Attachment
You = may, of=20 course, run your email client (Outlook, Eudora, etc.) now and send = an=20 email with the encrypted file as an attachment. This will work = reliably=20 but is a bit of 'work' because you have to start your email = client, open a=20 new outbound email message, search/browse for the file that you = just=20 encrypted and designate it as the attachment.

More efficiently, KetuFile, in most = cases, will allow=20 you to send the file you just encrypted with your existing email = client=20 using KetuFile's outbound email integration.
If you have not changed your 'email = integration=20 settings' in the Settings Dialog Box, then KetuFile will be in the = default=20 state which means that it will attempt to use Microsoft 'MAPI' to = connect=20 to your email client.

Now that=20 you have encrypted the file, just click the Email/Action button on = the=20 Main KetuFile Dialog Box. You will now see a new Dialog Box: = Action/Email.=20 Just click the Email button. This will launch your existing email = client=20 and designate the encrypted file as an attachment. =

Now from within your email client, you = can address=20 the email and send it off. You can, of course, add normal text to = the=20 email but remember that this added text is not encrypted and you = should=20 NEVER send the Key in the email. The Key for the file you just = encrypted,=20 should be conveyed by phone, fax, postal mail, courier, etc.=20

3.3 Decrypting : Manual And = Automatic=20
There are 2 approaches to = decryption - a=20 manual approach and an automatic approach.

Manual Approach To Decrypting - = Run The=20 KetuFile Application (If Not Already Running)
You may use the Windows 'Start' button, = then select=20 'Programs' to find the KetuFile start shortcut or double click on = the=20 Desktop KetuFile shortcut or double click on the KetuFile.EXE icon = in the=20 KetuFile install directory.

Select Decryption
Use the 'Select Encrypt OR Decrypt' button. Notice that = when you=20 click this button repeatedly that KetuFile toggles back and forth = between=20 Encrypt and Decrypt. There are 3 labels on this Main Dialog that = change=20 when you change between Encrypt and Decrypt.

Select File To Be Decrypted - ORIGINAL=20 File
On the KetuFile = Main Dialog=20 (Dialog 1) click the 'Browse For File' button and navigate to the = file=20 that you want to decrypt and double click on that file. Accept the = RESULTING file that KetuFile suggests.

Enter A Key
On the KetuFile Main Dialog (Dialog 1) click the 'Key' = button. Now,=20 on the Key Dialog (Dialog 2), type in a key in the upper edit box = that is=20 the very same sequence of random numbers and letters that = was used=20 to Encrypt the file. If you want to see the key you are typing, = click the=20 'See Key' check box.
If = you want to=20 save the key that you have entered, type a nickname for it in the = lower=20 right box then click the 'Save Key Now' button. When entering a = nickname,=20 just type a name with no spaces or punctuation such as: xyzco or = jsmith.=20 KetuFile will take care of adding the .key extension. It is = recommended=20 that you always save a key to a nickname to make subsequent = decrypting=20 faster.

If you have = previously=20 saved a key then you don't have to type it in again. You can just = double=20 click on the nickname in the box on the lower left. =

Now click 'OK' to indicate that you are = satisfied=20 with the key and this will take you back to the Main Dialog = (Dialog 1).=20

Start Decryption
Click the 'Decrypt Now' button.
The status of the decryption will be shown on the lower = left of the=20 Dialog.
Remember: = KetuFile does not=20 alter the ORIGINAL file that you are decrypting. That file is left = in-tact=20 on your hard disk. KetuFile has created a new file that is the = decrypted=20 file.

Run Decrypted File
If you wish to, click The 'Run Decrypted File' Button to = cause the=20 Windows operating system to run the correct application for the = file you=20 just decrypted and see it on screen.

Automatic Approach To = Decrypting=20
This approach assumes that when = the file=20 was encrypted, that the key was saved to a nickname, and that that = very=20 same key is now on the hard disk of your computer with the = same=20 very same nickname.

Using=20 your operating system Explorer or My Computer, double click on the = encrypted file. It will have a .ktu extension. KetuFile will be = run, the=20 encrypted file will be loaded into KetuFile and KetuFile will load = the=20 nicknamed-key. You will be presented with an explanatory Message = Box that=20 will put you just 2 clicks away from decrypting.

Automatic Approach To Decrypting An = Email=20 Attachment
This = approach=20 assumes that when the file was encrypted, that the key was saved = to a=20 nickname, and that that very same key is now on the hard = disk of=20 your computer with the same very same nickname.=20

This will work for = almost all=20 email programs. In the email that you have received, click on the=20 attached, encrypted file. This will usually be a file name or an = icon with=20 file name at the bottom of the email message. It will have a .ktu=20 extension. KetuFile will be run, the encrypted file will be loaded = into=20 KetuFile and KetuFile will load the nicknamed-key. You will be = presented=20 with an explanatory Message Box that will put you just 2 clicks = away from=20 decrypting.

Run Decrypted File
After you have decrypted the file, if you wish to, click = The 'Run=20 Decrypted File' Button to cause the Windows operating system to = run the=20 correct application for the file you just decrypted and see it on = screen.=20

4.0 Using KetuFile - Detailed = Instructions=20
4.1 Main Dialog



A General Note On 'Dialogs' =
When you are running the KetuFile = program, you are=20 looking at a presentation of information and controls in a = rectangular=20 display. This is called a 'Dialog'. Each Dialog has a number and a = name.=20 At the top left of the Dialog there is a number in square = brackets. If the=20 number is shown as [1] then that Dialog would be referred-to as, = Dialog 1.=20 Immediately to the right of the number, is the name of the Dialog. =

A General Note On This Help = Instruction=20
This instruction will first = give a brief=20 description of each of the boxes, controls, buttons, etc. in this = Dialog.=20 Then a description of how to use the Dialog is given. =

Begin Description Of Controls/Boxes On = This=20 Dialog
'Edit' Boxes For File = Name/Folder=20
There are 2 Edit boxes for file = names in=20 this Dialog. The titles of these boxes change depending on whether = you=20 want to encrypt or decrypt. An 'Edit box' both presents text = information=20 to you and allows you to edit/change that information. You may = enter a=20 file and/or path in either of the boxes, or Click the associated = 'Browse'=20 button and search for the file or folder.

ORIGINAL File and RESULTING = File
Whether you are encrypting or decrypting, = you always=20 start with the ORIGINAL File (in the upper Edit box) and end up = with the=20 RESULTING File (in the lower Edit box).
Maximum Allowed Sizes For These Files:
KetuFile Demo 100 kilobytes =
KetuFile Standard 10 megabytes =
KetuFile Pro 2 gigabytes
The first (upper) Edit box holds the = ORIGINAL file.=20

When you are = encrypting, the=20 ORIGINAL file is the file as it exists on your system before = encryption.=20 In the world of encryption and ciphers, this is sometimes = referred-to as=20 the 'Clear Text' file. This is a bit of a misnomer because this = file does=20 not have to be text. It can be a spread sheet, graphics file, = executable=20 file and any other type of file.

When you are decrypting, the ORIGINAL file is the = encrypted file.=20 In the world of encryption and ciphers, this is sometimes = referred-to as=20 the 'Ciphered Text' file. This is a bit of a misnomer because this = file is=20 not text.

The second = (lower)=20 Edit box holds the RESULTING file.
When you are encrypting, the RESULTING file is the file = after the=20 encryption process. The so-called 'Ciphered Text'. If you use = 'MAPI=20 Outbound Email Integration', it is this file that will be passed = to your=20 email client as an attachment.

When you are decrypting, the RESULTING is the file after = the=20 decryption process. The so-called 'Clear Text'.

Button, Browse For File =
This Button is associated with the first = edit box=20 (upper edit box). This Button allows you to browse for a file that = is to=20 be encrypted or decrypted, the ORIGINAL file.

Button, Browse For Folder =
This Button is associated with the second = edit box=20 (lower edit box). This Button allows you to browse for a folder in = which=20 the RESULTING file will be placed.

Check Box, Use The Same Resulting Folder = As The Last=20 Time You Ran KetuFile
When you=20 select a file for the ORIGINAL file, KetuFile will suggest a file = name and=20 file location for the RESULTING file. KetuFile will suggest that = the=20 RESULTING folder be the same as the ORIGINAL. If you set this = Check Box,=20 then KetuFile will suggest the previous folder location. = 'Previous' here=20 means a folder that you used previously.

Button, MiniHelp
This Button pops-up Dialog 3, the Text Browser that = allows you to=20 scroll through a quick help instruction.

Button, Settings
This Button pops-up Dialog 4, which allows you to input = the=20 registration number and select other User preferences. =

Button, Key
This Button pops-up Dialog 2, the Key entry Dialog where = you enter=20 or load the encryption/decryption key for either Encrypting or = Decrypting.=20

Button, Encrypt Now or Decrypt = Now=20
The title of this button is = toggled between=20 'Encrypt Now' and 'Decrypt Now' when you Click the 'Select' = button. The=20 'Select' Button is described in the next item. =

The 'Encrypt Now' / 'Decrypt Now' button = begins the=20 Encryption or Decryption process. Progress on Encryption or = Decryption is=20 shown near the bottom of this Dialog, Dialog 1.

Button, Select Encrypt OR = Decrypt=20
Clicking this button changes = (toggles) 3=20 titles on this Dialog box: 1] title of first (upper) Edit Box, 2] = title of=20 second (lower) Edit Box, 3] title of the Encrypt/Decrypt Now = button.=20

Button, Action/Email =
After you have encrypted a file, you may = wish to send=20 it as an attachment to an email, or perhaps process it in some = other way.=20 This button will allow you to proceed in that manner. Also, this = Button=20 will allow you to perform certain email or other tasks even if you = have=20 not just encrypted a file. Clicking this button will bring up = another=20 Dialog Box that gives you choices.

Button, Run Decrypted File =
After you have decrypted a file, back to = its initial=20 condition, you may wish to 'Run' that file immediately. Here are 2 = examples:
Someone has = sent you a=20 confidential text file. You have just decrypted it. The file name = of that=20 text file is in the lower Edit box, right now. Let's say that the = file=20 name is: C:\dir\info.txt

You=20 wish to read it, right now. Just Click the Button 'Run Decrypted = File'.=20 KetuFile will send that file name to your Windows operating = system. The=20 operating system will see that the extension of the file name is = txt and=20 it will run your text editor (usually Notepad) with the file and = you will=20 immediately see it on screen.

Someone has sent you a confidential Excel spreadsheet = file. You=20 have just decrypted it. The file name of that text file is in the = lower=20 Edit box, right now. Let's say that the file name is: =
C:\dir\data.xls

You wish to view the spreadsheet right now. Just Click = the Button=20 'Run Decrypted File'. KetuFile will send that file name to your = Windows=20 operating system. The operating system will see that the extension = of the=20 file name is xls and it will run your Excel program with the file = and you=20 will immediately see it on screen.

This Button, 'Run Decrypted File' will only work when = your KetuFile=20 program is in the Decrypt mode. Also, if the file extension of the = file=20 name that is in the lower Edit box is ktu then this Button will = not work.=20

Button, Info
This button presents information relative to the basic, = installed=20 KetuFile program as well as files that may be ready for encryption = or=20 decryption.

Data = included is:=20 KetuFile Model Type, KetuFile Version, Registration Number, = Operating=20 System Environment Variable KETUFILE, the Command Line data that = the=20 Operating System passed to the KetuFile program when it launched = KetuFile,=20 ORIGINAL File, RESULTING File, NickName as currently set within = this=20 session of KetuFile, NickName Read from the header of an encrypted = file=20 that is shown in the ORIGINAL file Edit box, Install Directory of=20 KetuFile, the Operating System Current Directory, Header Of = Designated=20 Encrypted File shown in the ORIGINAL Edit box. NOTE: the Header=20 information of an encrypted file is NOT itself, encrypted.=20

Button, OK Quit Program =
Causes the KetuFile program to quit = (end).=20

Begin Description Of Step-By-Step = Operation Of=20 This Dialog
Please read all=20 of the above information on the various controls, edit boxes, etc. = before=20 reading this section on operation.

Registration
Press the 'Settings' Button to allow entry of your = Registration=20 Number. There is a MiniHelp Button on the Settings Dialog (Dialog = 4) to=20 explain Registration.

Encrypt Or Decrypt
Click the 'Encrypt Now' / 'Decrypt Now' Button for the = operation=20 that you desire. The following discussion will present a = description for=20 encryption, then a description for decryption.

Encryption: IMPORTANT NOTE =
When you encrypt a file, KetuFile is = creating ANOTHER=20 file that is encrypted. The file that you started with is left = UNALTERED=20 on your hard disk.

Encryption: ORIGINAL File =
The ORIGINAL file is the one you want to = encrypt. It=20 can be any PC file, such as: text, word processor, spread sheet,=20 executable, batch, image, web page, etc.

Remember there are limitations on the = size of the=20 file you can encrypt or decrypt, depending on the model of = KetuFile that=20 you are using. These are specified above in the section on = ORIGINAL File=20 and RESULTING File.

You can=20 enter a file name manually of use the 'Browse For File' Button to = pop up a=20 familiar search Dialog that allows you to navigate your hard disk, = and in=20 most cases, your Network Neighborhood, to find the file.=20

If you enter the = file name=20 manually, as a 'name only', then KetuFile will assume that the = file is in=20 the Current Directory (Current Folder).
An example of a 'name only' would be:
info.txt

If=20 you enter the file name manually, as a 'full path name', then = KetuFile=20 will not have to make any assumptions and will find that precise = file at=20 the location (folder) you have specified.

An example of a 'full path name' would = be:=20
C:\data\info.txt=20

The Current = Directory is either,=20 the directory that KetuFile is stored in (installed in) or if your = are=20 decrypting and started the KetuFile program by double-clicking on = an=20 encrypted file that ended with the extension .ktu
then the Current Directory will be the = directory=20 (folder) that the encrypted file resides in.

It is recommended that you use the = 'Browse For File'=20 button to specify the ORIGINAL File.

Important Note: The first time that you start KetuFile, = it will use=20 the Current Directory (Current Folder) as the starting point for = your=20 search for a file using 'Browse For File'. KetuFile will remember = the=20 directory (folder) that you specify, so the next time you start = KetuFile=20 it will not go back to the Current Directory.

Encryption: RESULTING File =
KetuFile will suggest a file name and = location=20 (folder) for the RESULTING file. If possible, use this suggestion. = If the=20 location (folder) where the RESULTING file is to be placed is = other-than=20 the suggestion, you may use the 'Browse For Folder' Button to = navigate to=20 the desired location (folder).

The suggested RESUTLING file name is created by taking = the ORIGINAL=20 file name and adding .ktu extension.
Example:
ORIGINAL File is:=20 C:\data\info.txt
RESULTING File=20 suggestion: C:\data\info.txt.ktu

STRONG RECOMMENDATION: Do not change the .ktu = extension on=20 the suggested name of the RESULTING File. Doing so will defeat = certain=20 important convenience features of the KetuFile program, such as = allowing=20 you to double click on a file with .ktu extension and cause the = KetuFile=20 program to run.

Encryption: Key
Click the 'Key' Button to allow you to enter/designate = the=20 encryption/decryption key. There is a MiniHelp Button on the Key = Dialog=20 (Dialog 2) to explain Key entry/designation.

Encryption: Begin Actual = Encryption=20
Click the 'Encrypt Now' Button. = Progress on=20 the encryption is shown on the bottom left of this Dialog.=20

Encryption: Send Encrypted File As = Email=20 Attachment
Now = that you have=20 created an encrypted version of the original file, there resides = on your=20 hard disk a file whose full path name is shown in the Resulting = edit box.=20 You may send this file as an email attachment using your = 'currently=20 installed' email client, such as Outlook or Eudora. =

Click the Action/Email button to see the = Action/Email=20 Dialog Box. Then within that Dialog Box, click Email. You should = now see=20 your email client launched or brought to the forefront and a new = message=20 is ready to send and the encrypted file is shown as an attachment. =
You may now enter an = email address=20 in that message and proceed to send the email. =

Note that the Settings Dialog box = controls how this=20 Email button works. If the Settings box has 'MAPI' selected then = this is=20 the most automatic way to send an email.

In addition, there are various other = special=20 capabilities of the Action/Email Dialog box that are described in = the=20 section of this document for that Dialog.

Decryption: ORIGINAL File =
The ORIGINAL file is the one you want to = decrypt. It=20 will usually have the .ktu extension.
Remember there are limitations on the size of the file = you can=20 encrypt or decrypt, depending on the model of KetuFile that you = are using.=20 These are specified above in the section on ORIGINAL File and = RESULTING=20 File.

You can enter = a file name=20 manually of use the 'Browse For File' Button to pop up a familiar = search=20 Dialog that allows you to navigate your hard disk, and in most = cases, your=20 Network Neighborhood, to find the file.

If you enter the file name manually, as a 'name only', = then=20 KetuFile will assume that the file is in the Current Directory = (Current=20 Folder).
An example of a = 'name only'=20 would be:
info.txt.ktu=20

If you enter the = file name=20 manually, as a 'full path name', then KetuFile will not have to = make any=20 assumptions and will find that precise file at the location = (folder) you=20 have specified.
An = example of a=20 'full path name' would be:
C:\data\info.txt.ktu

The=20 Current Directory is either, the directory that KetuFile is stored = in=20 (installed in) or if your are decrypting and started the KetuFile = program=20 by double-clicking on an encrypted file that ended with the = extension .ktu=20
then the Current = Directory will be=20 the directory (folder) that the encrypted file resides in.=20

It is recommended = that you use=20 the 'Browse For File' button to specify the ORIGINAL File.=20

Important Note: The = first time=20 that you start KetuFile, it will use the Current Directory = (Current=20 Folder) as the starting point for your search for a file using = 'Browse For=20 File'. KetuFile will remember the directory (folder) that you = specify, so=20 the next time you start KetuFile it will not go back to the = Current=20 Directory.

Decryption: RESULTING File =
KetuFile will suggest a file name and = location=20 (folder) for the RESULTING file. If possible, use this suggestion. = If the=20 location (folder) where the RESULTING file is to be placed is = other-than=20 the suggestion, you may use the 'Browse For Folder' Button to = navigate to=20 the desired location (folder).

The suggested RESUTLING file name is created by removing = .ktu=20 extension.
Example: =
ORIGINAL File is: C:\data\info.txt.ktu=20
RESULTING File = suggestion:=20 C:\data\info.txt

Decryption: Key
Click the 'Key' Button to allow you to enter/designate = the=20 encryption/decryption key. There is a MiniHelp Button on the Key = Dialog=20 (Dialog 2) to explain Key entry/designation. Remember, you must = use the=20 exact key to decrypt that was used to encrypt. Remember also that = 'case'=20 is important for letters.

Example: the lower case letter a is entirely different = from the=20 upper case letter A.

Decryption: Begin Actual = Decryption=20
Click the 'Encrypt Now' Button. = Progress on=20 the encryption is shown on the bottom left of this Dialog.=20

Decryption: Run Decrypted File =
KetuFile has the ability to 'run' a file = after it has=20 been decrypted.

Examples are:=20
If the file is a text = file, then=20 'running' it means to run a text editor and pass the file to it.=20
If the file is a = spreadsheet, such=20 as Excel, then 'running' it means to run Excel and pass the = spreadsheet=20 file to it.
As long as = the Windows=20 operating system 'understands' the extension of the file name, it = will=20 know what program to run in order to 'run' that file. For example, = Excel=20 spreadsheets have XLS as the extension of their file names, so = Windows=20 knows to run Excel in order to show you this file. =

Decryption: Other Notes =
On most Windows(tm) operating systems, = when KetuFile=20 is installed, the .ktu file extension will be associated with the = KetuFile=20 program. In most cases, this allows you to double click on an = encrypted=20 file and have the KetuFile program start running. In addition, in = most=20 cases, the name of the ORIGINAL file will be loaded into the = appropriate=20 edit box.
When Dialog 1 = is set for=20 Decryption, and an encrypted file is shown in the ORIGINAL File = edit box,=20 you can Click the Info Button and read the header of the encrypted = file.=20 The header of an encrypted file is not itself, encrypted.=20

4.2 Key Dialog
A General Note On 'Dialogs' =
When you are running the KetuFile = program, you are=20 looking at a presentation of information and controls in a = rectangular=20 display. This is called a 'Dialog'. Each Dialog has a number and a = name.=20 At the top left of the Dialog there is a number in square = brackets. If the=20 number is shown as [1] then that Dialog would be referred-to as, = Dialog 1.=20 Immediately to the right of the number, is the name of the Dialog. =

A General Note On This Help = Instruction=20
This instruction will first = give a brief=20 description of each of the boxes, controls, buttons, etc. in this = Dialog.=20 Then a description of how to use the Dialog is given. =



Begin Description Of Controls/Boxes On = This=20 Dialog
'Edit/Display' Box For The Key =
The Edit/Display box (upper left of = Dialog) displays=20 a Key and allows you to edit it as desired.

'Edit' Box For Manually Entering=20 Encryption/Decryption Key
If you=20 are entering a key for the first time, enter it in the upper left = box.=20 Enter numbers and letters. Remember that upper case letters are = different=20 from lower case letters. More information on Keys is given in the = sections=20 on operation, below.

NOTE: When=20 you have a Key in the above box, it is referred-to as the 'Current = Key'.=20

Check Box, See Key
Each time you initially open the Key Dialog, this Check = Box will be=20 unchecked. The result of this is that the characters in both of = the=20 Edit/Display boxes will be shown as asterisks, not the actual = numbers and=20 letters. As with any entry of 'something secret', it is important = to=20 protect against someone looking over your shoulder. It you click = this=20 Check Box to the 'checked' state, the actual characters will be = shown.=20

Display Of Nickname For The Current = Key=20
Immediately below the Display = box that=20 shows the Key you will see the Nickname of the current Key, if in = fact the=20 current Key was loaded from a Nickname rather than one you entered = manually this time.

List Box, Load Previous Key, = Nicknames=20
This box (Nickname List box) is = located in=20 the lower left of the Dialog. It shows the Nicknames of previously = saved=20 Keys. If you want to use one of those Keys for encryption or = decryption,=20 just double click on the Nickname in the list box. The Key will be = loaded=20 and you will see it appear in the previously discussed Key = Edit/Display=20 box (upper left of Dialog).

Button, Delete Selected Nick =
If there is a Nickname shown, and = selected, in the=20 previously discussed Nickname List box that you wish to delete, = then click=20 this Button to delete it.

'Edit' Box, Enter NickName, No = Spaces=20
This 'Edit' box is in the lower = right of=20 the Dialog. If there is a Key currently in the previously = discussed Key=20 Edit/Display boxes (upper left of Dialog), you may save that Key = for=20 future use. You have to give it a NickName. Here is where you = enter that=20 NickName. Remember, this is just a nickname and as such should not = bear=20 ANY resemblance to the numbers and letters that are in the Key = itself! Be=20 cautious, be safe!

Button, Save Key Now
If there is a Key in the previously = discussed Key=20 Edit/Display boxes (upper left of Dialog), and you have entered a = Nickname=20 in the previously discussed Enter Nickname Edit box (lower right = of=20 Dialog), Then clicking this button will save the Key to your hard = disk.=20

Button, Minihelp
This Button pops-up Dialog 3, the Text Browser that = allows you to=20 scroll through a quick help instruction.

Button, OK
Clicking this Button, quits this Dialog keeping any Key = that you=20 have designated.

Button, Cancel
Clicking this Button, quits this Dialog and does NOT keep = Key.=20

Button, ClearKey
Clicking this Button, clears the Key so you can re-enter, = re-load=20 etc.

Display Box, Key(bits) =
This box shows the Key length in bits.=20

Begin Description Of Operation Of This=20 Dialog
Introduction
When you encrypt a file, there is a Key that specifies = how your=20 file is enciphered to make the ciphered version of your file, = unreadable=20 or in the case of encrypting an executable file, making the file=20 un-runnable. This is the same Key that is used for the decryption = process.=20 This Key is referred-to as the Encryption/Decryption Key or = simply, the=20 Key.

IMPORTANT = NOTE: When=20 you encrypt a file, KetuFile is creating ANOTHER file that is = encrypted.=20 The file that you started with, is left UNALTERED on your hard = disk.=20

Entering A Key Manually =
In the 'Edit' box for Keys (upper left of = Dialog),=20 enter RANDOM letters and numbers. If you use words/phrases from = ANY=20 language, your encrypted file will be BILLIONS of times easier to = crack!=20
As you enter the Key, = you will see=20 the Key Bits Display box showing the length (in bits) of the Key = you have=20 entered thus far.

Loading A Key That Was Previously Saved = With A=20 Nickname
First = select the=20 Nickname in the Nickname list box (lower left of Dialog) by double = clicking on it. The Key will immediately show up in the Key = Edit/Display=20 box (upper left of Dialog).

Seeing Or Hiding The Key =
By clicking the See Key Check Box, you = can toggle=20 between seeing the actual characters in the Key or seeing = asterisks.=20

Clearing A Current Key =
If a Key is currently in the Key Edit = boxes, you can=20 clear it by clicking the Clear Key Button. It will also clear the = Key Bits=20 Display box.

Saving A Current Key With A = Nickname=20
If a Key is currently in the = Key Edit box,=20 you can save it to your hard disk with an associated Nickname.=20

For example, if you = wish to save=20 a Key that you use for documents associated with the XYZ Company, = you=20 might use the Nickname: xyzco
Each=20 Nickname is saved to your hard disk as a file. The actual file = name of=20 this NickName would be: xyzco.key

Don't be concerned with the .key extension on the file = name.=20 KetuFile will take care of that for you. Just specify a Nickname = and let=20 KetuFile add the .key extension.

To save a Current Key, simply enter a Nickname in the = Enter=20 Nickname, No Spaces Edit box (lower right of Dialog). Then Click = the Save=20 Key Now Button.

Delete A Nicknamed Key That Is Saved On = Your Hard=20 Disk
All Nicknamed = (Saved) Keys=20 are shown in the Load Previous Key List box (lower left of = Dialog). If you=20 want to delete one of them, select it by clicking it one time, = then click=20 on the Delete Selected Nick Button.

Completing The Key Entry = Process
After you have manually entered a Key or = loaded a=20 saved (Nicknamed) Key, click the OK Button to indicate that you = are ready=20 to use that Key for encryption or decryption. If you change your = mind and=20 don't want to use the Current Key, click the Cancel Button.=20

4.3 MiniHelp Dialog
The MiniHelp Dialog is a quick reference = guide to=20 using a particular Dialog, i.e. there is a separate MiniHelp for = each of=20 the Dialogs.

4.4 Settings Dialog
A General Note On 'Dialogs' =
When you are running the KetuFile = program, you are=20 looking at a presentation of information and controls in a = rectangular=20 display. This is called a 'Dialog'. Each Dialog has a number and a = name.=20 At the top left of the Dialog there is a number in square = brackets. If the=20 number is shown as [1] then that Dialog would be referred-to as, = Dialog 1.=20 Immediately to the right of the number, is the name of the Dialog. =

IMPORTANT NOTE On = Seeing the=20 Current Registration Number
If you=20 wish to see the current Registration number, you can view it by = returning=20 to Dialog 1, the main KetuFile Dialog, and clicking on the Info = Button.=20

NOTE On Demo Mode Of = Operation=20
Prior to a valid = Registration Number=20 being entered in this Dialog, KetuFile will operate in the Demo = Mode. If=20 an invalid Registration Number is entered, KetuFile will remain in = the=20 Demo mode. If a valid Registration Number is currently in effect = and an=20 invalid number is entered, it will place KetuFile back into the = Demo mode,=20 until a valid Registration Number is entered.

The Settings Dialog is divided into 3 = principle=20 areas: 1) the top area that includes the edit box for the = Registration=20 Number, the viewer to use for MiniHelp, and a few buttons on the = right, 2)=20 the middle area that is enclosed in a box, that has the settings = for=20 outbound email integration, i.e. sending encrypted files as = attachments to=20 an email, and 3) the lower area, that is enclosed in a box, for = the=20 'Actions' settings.



'OK' And 'Cancel' Buttons =
These buttons both allow you to quit this = Dialog. By=20 clicking the 'OK' Button you will quit this Dialog and save any = changes=20 that you have just made. By clicking the 'Cancel' Button you will = quit=20 this Dialog and not save any changes that you have just made.=20

'Edit' Box For Registration = Key
At the top of the Settings Dialog, enter = the=20 Registration Number in the Edit Box, then Click the OK Button. = KetuFile=20 will respond to this action by popping up a message box that tells = you the=20 Model that you have enabled.

An=20 exit code of 777 means that a valid code was entered. An exit code = of 999=20 means that an invalid code was entered.

To Exit From Dialog Without Entering = Registration=20 Number
To Exit From = Dialog=20 Without Entering Registration Number, click the Cancel Button.=20

Use Notepad.EXE Check Box =
Near the top of the Settings Dialog, a = check box=20 allows you to use the operating system text editor or the KetuFile = built-in text browser, for the MiniHelp screens. The advantage of = using=20 the operating system text editor, such as Notepad.EXE, is that you = may=20 simultaneously view the MiniHelp information and interact with the = Dialog=20 boxes.

Outbound Email = Integration=20
These settings are in the = center of the=20 Settings Dialog, enclosed in a box. On the left there are two = check boxes.=20 You may choose one or the other.

MAPI
If you choose MAPI, then that is all you have to do. The = other edit=20 boxes associated with outbound email integration are ignored. MAPI = is the=20 first choice to try. It is the default setting when KetuFile is = installed.=20 It will work with most of the Windows operating systems and their=20 variations and service packs. MAPI relies on your PC having an = email=20 client software installed (Outlook, Eudora, etc.) that is = considered by=20 the Windows operating system to be the 'default mail client' and = MAPI=20 relies on that mail client being MAPI compliant. =

NOTE: 'default mail client' and default = email client'=20 are synonymous.

MAPI = stands for=20 Messaging Applications Program Interface. It is both a 'standard' = and a=20 piece of software provided by Microsoft. It is intended to = simplify and=20 standardize the interfacing of one application program, such as = KetuFile,=20 to another application program, such as Outlook or Eudora. = KetuFile has=20 been tested with various email clients and various Windows = operating=20 systems using the MAPI interface. It has been found to work well = with many=20 of these, with Outlook and Eudora having near-perfect = interoperability.=20 MAPI is not the only approach to outbound email integration with = KetuFile.=20 An Alternate Email Approach is also available. =

If the Check Box for MAPI (Use MAPI) is = indeed=20 checked, then the Buttons, Edit Boxes and Labels for the Alternate = Email=20 Approach are not operable and they are "grayed-out". =

When you click on the alternate email = Checkbox (Use=20 Email Client Below), then the associated Buttons, Edit Boxes and = Labels=20 for the alternate email approach are operable and they are no = longer=20 "grayed-out".

Alternate Email Approach (Manually = Configured),=20 General Info
NOTE: In the=20 following discussion, reference will be made to 'commands', = 'switches',=20 'command line interface', etc. In most of your work on a PC, you = are=20 interacting with a graphical environment. There are lots of pretty = graphics, sculpted buttons and controls, and you 'mouse and click' = your=20 way to success. There is also a 'command line interface' in the = PC,=20 sometimes referred-to as the 'DOS command line' that allows you to = do=20 certain tasks in a simple text-scrolling environment. This = environment=20 includes running various programs, such as a mail client. In = addition, a=20 program that is already running, such as KetuFile, can access this = command=20 line interface, and run other programs, such as mail clients. This = is in=20 fact how KetuFile accomplishes outbound email integration using = the=20 'Alternate' approach that we are now about to discuss.=20

In the Settings = Dialog, in the=20 middle section, you may click on the 'Use Email Client Below' = checkbox.=20 This is the 'Alternate' approach. Now you must enter data into the = two=20 edit boxes that are labeled 'Command' and 'Switches'. If you are = familiar=20 with the 'command line interface' to your email client, then you = probably=20 know what to enter here, but you may wish to at least skim the = detailed=20 explanation that follows.

Finding The Email Default = Client=20
Regardless of whether your = email client is=20 MAPI compliant or not, it may still be the 'registered' default = mail=20 client. In that case, it may have registered in the Windows = Registry, it's=20 existence and, most importantly, the exact settings (commands) = necessary=20 to launch it from the command line.

If the developer of the email client has indeed properly = registered=20 the mail client then you can view this using a button on the = Settings=20 Dialog. On the Settings Dialog, within the Outbound Email = Integration box,=20 there is a button labeled 'View Default Client'. If you = click this=20 button, KetuFile will attempt to find the command to issue on the = command=20 line interface, to launch the default mail client. This will be = shown to=20 you below the Switches edit box.

For example, a typical command for Eudora might be:=20
C:\Program = Files\Eudora\Eudora.exe=20

Another example, a = typical=20 command for Outlook 2003 might be:
C:\Program Files\Office\Office11\Outlook.exe /recycle=20

There is another = Button in this=20 area that says 'Load Default Client', clicking it will take = the=20 same information retrieved by the 'View' button and it will place = that=20 information in the Command edit box.

Alternate Email Approach, = Command=20
The 'Command' is typically the = full path=20 file name to the executable of the mail client that runs the = program. In=20 most cases this command can be issued regardless of whether the = mail=20 client program is already