Qbasic/QuickBasic Programming

This Windows program is the culmination of my programs using a modified form of a Vigenère Polygraphic Square Table that was invented by Blaise de Vigenère and used extensively in the very early days of paper and pencil cryptology. This program uses a table consisting of every typewriter key on the keyboard, CHR$[32] through CHR$[126] plus CHR$[9] tab, CHR$[10] line feed, and CHR$[13] carriage return. This results in a table size of 98 x 98 that is not printable because of the control characters. Simple text can still be manually typed and formatted using tabs and carriage returns within this program. However, to obtain any kind of desired formatting, any HTML editor is first used because Hyper Text Markup Language is written with text base instructions: a source code that is interpreted by the browser to give sophisticated formatted output. The source code of the standalone HTML file is copied to the Windows Clipboard and pasted into this program. The front end interface of this latest program is almost identical with my previous Extended Reciprocal Table Auto Key Solver. Since a large amount of HTML source code can be worked on, I have included visual counters so that a user knows what is going on while the program is either scanning for valid text or Enciphering/Deciphering. The zip file contains the Windows executable, the source code, a PDF of this program with screen shots, a PDF of the Extended Reciprocal Table Auto Key Solver [for review of the auto key algorithm], a PDF of the Extended Reciprocal One Time Pad Table [illustrating the table design], and an enciphered HTML file saved in a text file.

Source included - QB64 - 1.05 MB - 1188 downloads

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