๐Ÿ‘‰ SMS text encryption with GSM charactersโ—

by Johannes Mรผller

Version 1 (August 17, 2019)

Download (41 downloads)

๐™€๐™ฃ๐™˜๐™ง๐™ฎ๐™ฅ๐™ฉ๐™จ ๐˜ผ๐™Ž๐˜พ๐™„๐™„ ๐™ฉ๐™š๐™ญ๐™ฉ ๐™ฌ๐™ž๐™ฉ๐™ ๐™ค๐™ฃ๐™š ๐™ค๐™› 1๏ธโƒฃ2๏ธโƒฃ7๏ธโƒฃ ๐™ฅ๐™ง๐™š๐™œ๐™š๐™ฃ๐™š๐™ง๐™–๐™ฉ๐™š๐™™ ๐™ฉ๐™ง๐™ช๐™š๐™ก๐™ฎ ๐™จ๐™š๐™˜๐™ช๐™ง๐™š ๐™ ๐™š๐™ฎ๐™จ.
Key is randomly selected and preshared so that the cipher text cannot be easily decrypted by propability analysis.
the cipher is mapped to the GSM Alphabet to efficiently use all 160 7-bit Charakters per SMS.

let me know if you think 127 keys is not enough and there needs to be 127^2 keys

Next version will cover the transmission of periodic encrypted status reports (GPS, cell info, wifi APs, ...) to a receiver with datalogger.