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Random Stream Cipher

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Ranked as 35365 on our all-time top downloads list with 767 downloads.
Ranked as 14736 on our top downloads list for the past seven days with 2 downloads.

cipher.zip
Filename cipher.zip (Download)
Title Random Stream Cipher
Description This is, as you can tell by the directory it's in, an encryption tool written in BASIC. There are numerous ways to encrypt data, but this program exhibits what I believe is the most efficient and secure encryption method for the TI-83/84 Plus family. It takes data in the form of a string, then encrypts it using a stream cipher based on the random number generator built into the calculator. Better yet, it first preprograms a seed for the random number generator by asking for an encryption key, which can be any positive integer you want. Decrypts perfectly, with no errors ever found. Just in case someone stole your calculator as you were encrypting some data, the program automatically deletes each variable it uses as soon as it's done with it. When you're done using the data, you can even run the built-in Destroy function, which, as you may guess, deletes both the encrypted and decrypted forms of the data. Instructions and screenshots are included.
Author Deep Toaster (deeptoaster@gmail.com)
Category TI-83/84 Plus BASIC Misc. Programs (Encryption)
File Size 26,752 bytes
File Date and Time Thu May 20 07:58:06 2010
Documentation Included? Yes

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ARCHIVE CONTENTS

Archive Contents
Name Size
cipher3.gif   4703
CIPHER.8xp   902
cipher.txt   659
cipher1.gif   19459
cipher2.gif   15293

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