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CryptoAnalyzer Version 1.0 Copyright (c) 1993 All Rights Reserved by William Ned Miller 7504 Saffron Court Hanover MD 21076 (410) 766-2365 Section Page 1.0 Introduction ............................................... 1 1.1 Document Layout ......................................... 2 2.0 System Requirements ........................................ 3 2.1 Hardware Requirements ................................... 3 2.2 Video Adapters .......................................... 3 2.3 Operating System Limitations ............................ 3 3.0 Installation ............................................... 4 4.0 Program Options ............................................ 5 4.1 Substitution Helper ..................................... 5 4.2 Substitution ............................................ 7 4.2.1 Encipher ........................................... 8 4.2.2 Encipher with Keyword .............................. 10 4.2.3 Decipher with Keyword .............................. 11 4.3 Railfence ............................................... 12 4.3.1 Encipher ........................................... 13 4.3.2 Decipher ........................................... 15 4.3.3 Decipher Helper .................................... 15 5.0 Licensing .................................................. 16 6.0 Disclaimer ................................................. 17 7.0 Where CryptoAnalyzer Can Be Found .......................... 18 - i - 1.0 Introduction CryptoAnalyzer, CRY, is a program to aid the user in the solving of cryptograms. Not only is CRY an aid but it will also allow the user to easily create their own cryptograms. This version of the program will aid the user in solving substitution and railfence type cryptograms but future release of the program will contain additional methods. There are many features to CryptoAnalyzer the following lists a few: 1) Text entered under one option will be carried over to another. This way the user will not have to re-enter data when going from one method to another. 2) Text listed in the lower window, when the F1 key has been pressed, can be dump to a user defined file. 3) The simple substitution helper will save the user a lot of erasers and rubbed out paper when this type of cryptogram is being solved. The following display will be presented to the user when CRY is executed. +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | | | 1. Substitution Helper | | 2. Substitution | | 3. Railfence | | | | | | | | | | | | | | | | | | | | | | | | | | | +-------------------------------------------------------------------------+ | F10=Exit| |----------------$8.50 Shareware Contribution Requested-------------------+ Pressing the "1" key will enter the "Substitution Helper", "2" will enter "Substitution" and "3" will enter "Railfence" encipher and decipher options. Pressing the F10 function from this window will exit CryptoAnalyzer and leave the user at the point where CRY was executed. CryptoAnalyzer was developed in the programming language Ada. - 1 - 1.1 Document Layout The remainder of this document is as follows: Chapter 2 - System Requirements Chapter 3 - Installation Procedures Chapter 4 - Program Options Chapter 5 - Licensing Chapter 6 - Disclaimer Chapter 7 - Where CryptoAnalyzer Can Be Found - 2 - 2.0 System Requirements This chapter describes system requirements necessary to execute CryptoAnalyzer 2.1 Hardware Requirements CryptoAnalyzer is compatible with the XT, AT, PS2 models and other 100% compatible systems. 2.2 Video Adapters CryptoAnalyzer will operate with all type of video adapters. It has been designed and tested with Monochrome, EGA, CGA and VGA adapters. 2.3 Operating System Limitations CryptoAnalyzer has been designed to execute on systems with DOS versions 3.00 through 5.00. - 3 - 3.0 Installation Procedures The following procedures allow new users to easily install CryptoAnalyzer on their system. The following procedures make the assumption that you have a hard disk as drive "c", boot from that drive and will be using "CRY" as the directory for the program. 1. Make a subdirectory "CRY" under the "C:\" (root) directory. mkdir cry 2. Copy all CRY files to this new "C:\CRY" directory. copy *.* c:\cry 3. Type "cry" at the DOS prompt cd dry cry - 4 - 4.0 Program Options This chapter will explain each of the options available with the CryptoAnalyzer program. 4.1 Substitution Helper Choosing this option from the main menu will aid the user in solving substitution cryptograms. Upon selection the following will be presented to the user: +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | | | | | Enter Cipher Text | | +---------------------------------------------------------------------+ | | |Now is the time | | | |for all good | | | |men to come | | | |to the | | | |aid | | | |of their country. | | | +---------------------------------------------------------------------+ | | | | | | | | | | | | | | | | | | | | | | | | | +-------------------------------------------------------------------------+ | F10=Stop Editing| +-------------------------------------------------------------------------+ At this point, the user enter in the cipher text that is to be deciphered. Once all of the text has been entered, press the F10 function key to stop the editing process and enter the substitution helper. The following will be displayed: NOTE Plain or cipher text entered on one screen will be retained and be accessible on another. - 5 - +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | | | Cipher=ABCDEFGHIJKLMNOPQRSTUVWXYZ Cipher Letter _ | | Enter Plain Text Plain =-------------------------- Plain Letter | | +---------------------------------------------------------------------+ | | |Now is the time | | | |for all good | | | |men to come | | | |to the | | | |aid | | | |of their country. | | | +---------------------------------------------------------------------+ | | | | --- -- --- ---- | | --- --- ---- | | --- -- ---- | | -- --- | | --- | | -- ----- -------. | | | | | |A= 2 C= 2 E= 6 G= 1 I= 4 K= M= 3 O= 9 Q= S= 2 U= 1 W= Y= 1| |B= D= 2 F= 2 H= 3 J= L= 2 N= 3 P= R= 3 T= 7 V= X= Z= 1| +-------------------------------------------------------------------------+ | F10=Exit| +-------------------------------------------------------------------------+ This window will be all that is needed to solve a cryptogram that uses simple substitution. The window contains a number of fields that will aid the user in solving a cryptogram. 1) The top part of the window contains the mapping from cipher text to plain text. 2) The bottom of the window will contain a frequency count of each letter in the cryptogram. This may aid the user in determining the more frequent letters used in the english language. 3) Just under the cipher text will be where the plain text will be displayed. At first, the plain text will be displayed as '-'. As a cipher letter is mapped to a plain letter the mapping will be displayed. 4) At the top right will be the user's input fields that are used to enter a cipher letter and a plain text letter. When these two fields are filled in, a mapping from cipher to plain text will be performed and the various portions of the window will be updated to reflect the users input. The following are a few examples that may be entered: - 6 - Cipher Letter: A Plain Letter: B In this example the program will map the letter "A" to the letter "B". In the plain text area the letter "B" will be displayed corresponding to the letter "A" that is in the cipher text area. The cipher to plain mapping at the top of the window will be updated to reflect the input. Cipher Letter: A Plain Letter: - In this example the program will erase the mapping of the letter "A" to the letter "B". This will be reflected in the cipher to plain text mapping and also in the plain text area. 4.2 Substitution Choosing this option from the main menu will aid the user in enciphering and deciphering substitution cryptograms. Upon selection the following will be presented to the user: +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | | | | | 1. Encipher | | 2. Encipher With Keyword | | 3. Decipher With Keyword | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-------------------------------------------------------------------------+ | F10=Main Menu| +-------------------------------------------------------------------------+ - 7 - 4.2.1 Encipher Choosing the "Encipher" option from the main menu will aid the user in enciphering substitution cryptograms. Upon selection, the following will be presented to the user: +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | | | | | Enter Plain Text | | +---------------------------------------------------------------------+ | | |Now is the time | | | |for all good | | | |men to come | | | |to the | | | |aid | | | |of their country. | | | +---------------------------------------------------------------------+ | | | | | | | | | | | | | | | | | | | | | | | | | +-------------------------------------------------------------------------+ | F10=Stop Editing| +-------------------------------------------------------------------------+ At this point, the user enters in the plain text that is to be enciphered. Once all of the text has been entered, press the F10 function key to stop the editing process and enter the enciphering process. The following will be displayed: - 8 - +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | | | Enter Plain Text | | +---------------------------------------------------------------------+ | | |Now is the time | | | |for all good | | | |men to come | | | |to the | | | |aid | | | |of their country. | | | +---------------------------------------------------------------------+ | | | | | | | | | | | | | | | | | | | +-------------------------------------------------------------------------+ |F1=Process F2=Cipher F9=File F10=Exit| +-------------------------------------------------------------------------+ At this point there are two options. The "Cipher" options, by pressing F2, will allow the user to create a cryptogram by choosing their own substitution letters. The following will be presented to the user: +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | | | Enter Plain Text | | +---------------------------------------------------------------------+ | | |Now is the time | | | |for all good | | | |men to come | | | |to the | | | |aid | | | |of their country. | | | +---------------------------------------------------------------------+ | | | | Plain =ABCDEFGHIJKLMNOPQRSTUVWXYZ | | Cipher =-------------------------- | | | | Plain _ | | Cipher | | | | | | | +-------------------------------------------------------------------------+ |F1=Process F2=Cipher F10=Exit| +-------------------------------------------------------------------------+ - 9 - The user can choose their own substitution letter by letter. First a plain text letter and then a cipher letter. As the letters are entered, the mapping will be displayed above the user entry fields. Once all of the letters have been mapped, choosing the "Process" option, F1, the ciphered text will be generated and displayed. After the F1 key has been pressed and the cryptogram created, the F9 function key can be used to dump the text to a file. The user will be given the chance to choose their own output file or the default 'crypto.txt' can be used. Once the file name has been chosen pressing the enter will cause the file to be created in the current directory. Pressing the 'ESC' key will cancel the file output option. 4.2.2 Encipher with Keyword Choosing the "Encipher with Keyword" option from the substitution menu will aid the user in enciphering substitution cryptograms. The user will be presented with a window in which to enter the plain text. Once the plain text has been entered and the F10 key pressed, the user is ready to create the cipher text. The following will be displayed for the user: +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | | | Shift: _ | | Enter Plain Text Keyword: | | +---------------------------------------------------------------------+ | | |Now is the time | | | |for all good | | | |men to come | | | |to come to | | | |aid | | | |of their country. | | | +---------------------------------------------------------------------+ | | | | | | | | | | | | | | | | | | | | | | | | | +-------------------------------------------------------------------------+ |F1=Process F2=Shift F3=Keyword F10=Exit| +-------------------------------------------------------------------------+ - 10 - Enciphering a substitution with this option requires the user to enter a keyword and a shift value. If no keyword or shift values are provided then the ciphered text will be the same as the plain text. 1) Keyword - Pressing the F3 function key will place the cursor on this field. The key must contain the letters "A-Z". This is usually a common word. 2) Shift - Pressing the F2 function key will place the cursor on this field. This is an integer value between 0 and 26. This indicate how much to shift the keyword and the rest of the alphabet to create the cipher map. A value of zero indicates that the alphabet is NOT to be shifted. The following is a few examples using a keyword and a shift value: 1) Keyword = MILLER Shift = 0 Plain =ABCDEFGHIJKLMNOPQRSTUVWXYZ Cipher=MILERABCDFGHJKNOPQSTUVWXYZ In this example not much substitution will take place just where the keyword is enter into the equation. The shift value of '0' did not cause a shift in the cipher alphabet. 2) Keyword = MILLER Shift = 25 Plain =ABCDEFGHIJKLMNOPQRSTUVWXYZ Cipher=ZMILERABCDFGHJKNOPQSTUVWXY In this example 25 out of 26 letter letters were substituted. The letter "e" happens to map back to the letter "e". If the shift had been another value no letter would map back onto itself. Notice how the second 'L' in 'MILLER' has been remove from the keyword. Once the cipher alphabet has been created, pressing the F1 function key will create the cryptogram from this alphabet. It will be display in the lower half of the window. 4.2.3 Decipher with Keyword Choosing the "Decipher with Keyword" option from the substitution menu will aid the user in deciphering substitution cryptograms. The user will be presented with a window in which to enter the cipher text. Once the cipher text has been entered and the F10 key pressed, the user is ready to recreate the plain text. The procedures to recreate the plain text are the same as described in the previous section. Remember the user must know the keyword and shift value in order for the plain text to be reconstructed. If these values are not known then using the "substitution helper" will aid in the reconstruction. - 11 - 4.3 Railfence Choosing this option from the main menu will aid the user in enciphering and deciphering railfence cryptograms. Upon selection, the following will be presented to the user: +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | | | | | 1. Encipher | | 2. Decipher | | 3. Decipher Helper | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +-------------------------------------------------------------------------+ | F10=Main Menu| +-------------------------------------------------------------------------+ - 12 - 4.3.1 Encipher Choosing the "Encipher" option from the Railfence menu will aid the user in enciphering railfence cryptograms. Upon selection the following will be presented to the user: +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | | | | | Enter Plain Text | | +---------------------------------------------------------------------+ | | |Now is the time | | | |for all good | | | |men to come | | | |to the | | | |aid | | | |of their country. | | | +---------------------------------------------------------------------+ | | | | | | | | | | | | | | | | | | | | | | | | | +-------------------------------------------------------------------------+ | F10=Stop Editing| +-------------------------------------------------------------------------+ At this point the user enters in the plain text that is to be enciphered. Once all of the text has been entered, press the F10 function key to stop the editing process and enter the enciphering process. The following will be displayed: - 13 - +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | | | Enter Plain Text Height = | | +---------------------------------------------------------------------+ | | |Now is the time | | | |for all good | | | |men to come | | | |to the | | | |aid | | | |of their country. | | | +---------------------------------------------------------------------+ | | | | | | | | | | | | | | | +-------------------------------------------------------------------------+ |F1=Process F2=Height F9=File F10=Exit| +-------------------------------------------------------------------------+ At this point there are two options. The "Height" options, by pressing F2, will allow the user to choose a height for their rails. After entering a height, press the F1 function key to produce the cryptogram. The following will be presented to the user: +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | | | Enter Plain Text Height = 5 | | +---------------------------------------------------------------------+ | | |Now is the time | | | |for all good | | | |men to come | | | |to the | | | |aid | | | |of their country. | | | +---------------------------------------------------------------------+ | | | | +---------------------------------------------------------------------+ | | |NTLNO FUOEI ALETT TOTON WHMRG MOEHD HCTIT EOODC MEIER RSFOO AIY | | | | | | | | | | | | | | | | | | | | | | | +---------------------------------------------------------------------+ | | | +-------------------------------------------------------------------------+ |F1=Process F2=Height F9=File F10=Exit| +-------------------------------------------------------------------------+ - 14 - 4.3.2 Decipher Choosing the "Decipher" option from the main menu will aid the user in deciphering railfence cryptograms. The processing and parameters are the same as in enciphering a railfence cryptogram. 4.3.3 Decipher Helper Choosing the "Decipher Helper" option from the main menu will aid the user in deciphering railfence cryptograms. Once the text has been entered and the F1 function key has been pressed, the following will be presented to the user: +-----------------CryptoAnalyzer V1.0 by William Ned Miller---------------+ | Up: ^ | | Enter Plain Text Down: v Height: 5 | | +---------------------------------------------------------------------+ | | |Now is the time | | | |for all good | | | |men to come | | | |to the | | | |aid | | | |of their country. | | | +---------------------------------------------------------------------+ | | | | +---------------------------------------------------------------------+ | | |NTLNO FUOEI ALETT TOTON WHMRG MOEHD HCTIT EOODC MEIER RSFOO AIY | | | | | | | | | | | | | | | | | | | | | | | +---------------------------------------------------------------------+ | | | +-------------------------------------------------------------------------+ |F1=Process F9=File F10=Exit| +-------------------------------------------------------------------------+ Using the up and down arrow keys, the user will be able to go through heights ranging from 3 to 20. The plain text will be displayed in the lower window. - 15 - 5.0 Licensing * A $8.50 shareware contribution is requested for using the program. * The author retains the sole right to sell the program. * The author grants users the right to copy and distribute the program within the following constraints: - All program files remain unaltered and are distributed together. - No attempt is made to sell the program, or to make money from it or any modified version of it. - The program is not bundled with any other hardware or software transactions without the author's permission. - Only the original "non-cloned" version of the program with the startup time delay is distributed. - Recognized user groups may charge a maximum $7 duplication or distribution fee. * Continued use of the program (more than 3 weeks) by any individual, corporation or institution without a single user or site license is prohibited. * Single user licenses are obtained by sending in the $8.50 shareware contribution. * User that send in the requested contribution will receive instructions on how to remove the shareware request and insert their own name and registration number. * Once CryptoAnalyzer has been registered the registration follows the program for all future releases of the program. - 16 - 6.0 Disclaimer The author disclaims all warranties expressed or implied as to the quality or performance of this program. The author will not be held liable for any lost profits, lost savings or any other direct, indirect, incidental or consequential damages resulting from the use of this program. Your use of this program constitutes your agreement to this disclaimer and your release of the author from any form of liability or litigation. - 17 - 7.0 Where CryptoAnalyzer Can Be Found The latest version of CryptoAnalyzer and other products developed by this author can be found on the following BBS: The Programmer's Corner Columbia Maryland 301-596-7692 through 7697 301-995-6873 through 6877 301-621-3424 and 3436 - 18 - CryptoAnalyzer Version 1.0 Copyright (c) 1993 All Rights Reserved William Ned Miller 7504 Saffron Court Hanover MD 21076 (410) 766-2365 Registration Form Registration Provides: 1) Notification of the next release of CryptoAnalyzer. 2) Instructions on how to remove the shareware contribution request and insert the users name and registration number. Registration follows all future release of the program. To register your copy of CryptoAnalyzer please fill in the following information and send it along with $8.50 (US) to: William Ned Miller { Please only send } 7504 Saffron Court { checks drawn on } Hanover MD 21076 { U.S. banks or } { postal money } { orders. } Name: ____________________________________________________________ Address: _________________________________________________________ __________________________________________________________________ Phone: (Optional) ( )______-__________________________________ Where Did You Get CryptoAnalyzer _________________________________ __________________________________________________________________ Comments: ________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________ __________________________________________________________________