4.

Learn Encryption Techniques with BASIC and C++
(Publisher: Wordware Publishing, Inc.)
Author(s): Gil Held
ISBN: 1556225989
Publication Date: 10/01/98

Table of Contents

Appendix A
Companion CD-ROM Files

This appendix lists the names of each of the files contained on the companion CD-ROM, as well as a description of the function of each file. To facilitate readers obtaining additional information concerning the operation and utilization of each program, files are listed in this appendix in the order in which they are described in each chapter, by chapter. The .EXE files, which are executable versions of the BASIC and C++ programs, are not listed in the book; however, they are listed below in the same chapter in which the BASIC or C++ program is described.

There are two directories on the CD: BASIC and C. The BASIC directory contains BASIC language source and executable programs, while the C directory contains C++ language source and executable programs. In the chart below, the .EXE file is listed only once with the name of the corresponding program followed by .xxx. The .CPP executable is in the C directory, and the .BAS executable is in the BASIC directory.

Chapter	Filename	Description
2	SHIFT.BAS	This program creates a sequence of shifted alphabets.
	SHIFT.CPP	This program is the C++ version of SHIFT.BAS.
	SHIFT.EXE	This is the executable version of SHIFT.CPP.
	CIPHER1.BAS	This program creates a shifted alphabet based upon the entry of an alphabetic shift key character.
	CIPHER1.CPP	This program is the C++ version of CIPHER1.BAS.
	CIPHER1.EXE	This is the executable version of CIPHER1.xxx.
	CIPHER2.BAS	This program enciphers a one-line message using a cipher alphabet formed by shifting the plaintext alphabet through the use of an alphabetic shift key.
	CIPHER2.CPP	This program is the C++ version of CIPHER2.BAS.
	CIPHER2.EXE	This is the executable version of CIPHER2.xxx.
	CIPHER3.BAS	This program expands upon the functionality of CIPHER2.BAS by adding a routine which displays the resulting enciphered text in groups of five characters.
	CIPHER3.CPP	This program is the C++ version of CIPHER3.BAS.
	CIPHER3.EXE	This is the executable version of CIPHER3.xxx.
	CIPHER4.BAS	This program expands upon the functionality of CIPHER3.BAS by permitting spaces between words in a plaintext message and selectively enciphering the message using a simple monoalphabetic substitution process.
	CIPHER4.CPP	This program is the C++ version of CIPHER4.BAS.
	CIPHER4.EXE	This is the executable version of CIPHER4.xxx.
	DCIPHER4.BAS	This program deciphers a message previously enciphered through the use of CIPHER4.BAS.
	DCIPHER4.CPP	This program is the C++ version of DCIPHER4.BAS.
	DCIPHER4.EXE	This is the executable version of DCIPHER4.xxx.
3	WORD.BAS	This program develops an alphabet based upon the entry of a keyword or keyword phrase.
	WORD.CPP	This program is the C++ version of WORD.BAS.
	WORD.EXE	This is the executable version of WORD.xxx.
	CIPHER5.BAS	This program enciphers a message based upon the use of a keyword or keyword phrase and an alphabetic shift key using a monoalphabetic substitution process.
	CIPHER5.CPP	This program is the C++ version of CIPHER5.BAS.
	CIPHER5.EXE	This is the executable version of CIPHER5.xxx.
	DCIPHER5.BAS	This program deciphers a message enciphered using the program DCIPHER5.BAS.
	DCIPHER5.CPP	This program is the C++ version of DCIPHER5.BAS.
	DCIPHER5.EXE	This is the executable version of DCIPHER5.xxx.
4	CIPHERTR.BAS	This program enciphers a message using a transposition matrix and a monoalphabetic substitution process based upon a keyword or keyword phrase and an alphabetic shift key. This program displays the composition of different alphabets to illustrate the operation of the enciphering process.
	CIPHERTR.CPP	This program is the C++ version of CIPHERTR.BAS.
	CIPHERTR.EXE	This is the executable version of CIPHERTR.xxx.
	TRANSPORT.CPP	This program is a C++ expansion of BASIC’s TRANSPORT subroutine.
	TRANSPORT.EXE	This is the executable version of TRANSPORT.CPP.
	CIPHER6.BAS	This program adds an interval extraction capability to CIPHERTR.BAS.
	CIPHER6.CPP	This program is the C++ version of CIPHER6.BAS.
	CIPHER6.EXE	This is the executable version of CIPHER6.xxx.
	DCIPHER6.BAS	This program deciphers messages enciphered using the program CIPHER6.BAS.
	DCIPHER6.CPP	This program is the C++ version of DCIPHER6.BAS.
	DCIPHER6.EXE	This is the executable version of DCIPHER6.xxx.
5	POLY1.BAS	This program creates a Vigenére tableau.
	POLY1.CPP	This program is the C++ version of POLY1.BAS.
	POLY1.EXE	This is the executable version of POLY1.xxx.
	COUNT.CPP	This program performs a frequency count of the contents of an encrypted file.
	COUNT.EXE	This is the executable version of COUNT.CPP.
	POLY2.BAS	This program enciphers a message based upon the use of two keywords or keyword phrases using a polyalphabetic substitution process and 26 cipher alphabets.
	POLY2.CPP	This program is the C++ version of POLY2.BAS.
	POLY2.EXE	This is the executable version of POLY2.xxx.
	DPOLY2.BAS	This program deciphers messages previously enciphered using the program POLY2.BAS.
	DPOLY2.CPP	This program is the C++ version of DPOLY2.BAS.
	DPOLY2.EXE	This is the executable version of DPOLY2.xxx.
6	RANDOM1.BAS	This program generates random numbers between 0 and 25.
	RANDOM1.CPP	This program is the C++ version of RANDOM1.BAS.
	RANDOM1.EXE	This is the executable version of RANDOM1.xxx.
	RANDOM2.BAS	This program demonstrates the use of random numbers to encipher a one-line message.
	RANDOM2.CPP	This program is the C++ version of RANDOM2.BAS.
	RANDOM2.EXE	This is the executable version of RANDOM2.xxx.
	DRANDOM2.BAS	This programs deciphers a one-line message previously enciphered using the program RANDOM2.BAS.
	DRANDOM2.CPP	This program is the C++ version of DRANDOM2.BAS.
	DRANDOM2.EXE	This is the executable version of DRANDOM2.xxx.
	ASCII.CPP	This program displays the ASCII value of characters.
	ASCII.EXE	This is the executable version of ASCII.CPP.
	POSITION.BAS	This program demonstrates the positioning to a place in the BASIC random number generator based upon a “secret” code up to six characters in length.
	POSITION.CPP	This program is the C++ version of POSITION.BAS.
	POSITION.EXE	This is the executable version of POSITION.xxx.
	RTEST.BAS	This program scans a random number seed to locate any sequence of five repeated numbers.
	RTEST.EXE	This is the executable version of RTEST.BAS.
	RANDOM3.BAS	This program enciphers messages using the BASIC random number generator and a six-position “secret” code to locate a starting point in the random number generator.
	RANDOM3.CPP	This program is the C++ version of RANDOM3.BAS.
	RANDOM3.EXE	This is the executable version of RANDOM3.xxx.
	DRANDOM3.BAS	This program deciphers messages previously enciphered using the program RANDOM3.BAS.
	DRANDOM3.CPP	This program is the C++ version of DRANDOM3.BAS.
	DRANDOM3.EXE	This is the executable version of DRANDOM3.xxx.
7	ENCIPHER.BAS	This program performs encipherment using seven previously developed routines.
	ENCIPHER.EXE	This is the executable version of ENCIPHER.BAS.
	DECIPHER.BAS	This program deciphers data previously enciphered using the ENCIPHER.BAS program.
	DECIPHER.EXE	This is the executable version of DECIPHER.BAS.
	SECRET.MSG	This file contains the challenge message that readers can attempt to decipher.

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