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HIDEMYSMS –ANTI-NSA ENKRIPCIJA HIDEMYSMS –ANTI-NSA ENCRIPTION

Autori: Luka Jevtović, Rastko Mioĉinović Uĉenici I godine Trinaeste beogradske
gimnazije i polaznici Regionalnog centra za talente–Beograd II
Mentor: Mateja Opaĉić

Rezime

U svetu u kom se trenutno nalazimo potreba da saĉuvamo svoje liĉne i privatne
podatke postaje sve veća, a nedavna intruzivnost NSA korporacije na upravo te liĉne podatke

o kojoj je ĉitav internet brujao naredna 3 meseca definitivno nije popravila situaciju.

Ĉinjenica je da nikada ne moţemo biti potpuno sigurni, ali to ne znaĉi da bi trebalo odustati
od svih pokušaja zaštite. I dok trenutno većina društa ima i koristi neki antivirus/spyware

softver na svom raĉunaru, mobilni telefoni su i dalje delimiĉno nezaštićeni. Naravno, postoje
„male“ verzije svih većih antivirusnih programa koje su prilagoćene Android ili iOS

operativnim sistemima, ali polje samog protoka SMS poruka, koje ponekada nose vrlo vaţne
informacije, je i dalje otvoreno raznim vrstama „napada“ – tu smo mi ţeleli da stupimo na

snagu. Poĉetna ideja bila je ĉisto enkriptovanje SMS poruka pre slanja, a zatim dekodiranje

iste samo na telefonu primaoca, a u toku razvitka te aplikacije unapredili smo je još nekim
korisnim dodacima.

Ključne reči: SMS, enkripcija,aplikacija, Android, poruka, signal, matrica

Abstract

In a world where the need for a good protection over our private data and information
is growing bigger each day, and NSA’s recent intrusions on the field of our personal data,

about which the Internet grew wild in the next 3 months, did not fix that situation. The fact is,
we can never be absolutely sure whether our data is secure or not, but that does not mean that

we should abandon all ways of protecting it. And while most of the people already have and is
using some kind of antimalware/spyware software, cellphones are still quite vulnerable. Of

course, there are “small” versions of those antivirus programs that are designed for Android or

iOS operating systems, but the field of sending and receiving SMS messages, which often
carry some very important information, are still quite open to all sorts of “attacks” – and that

is where we wanted to jump in. The original idea was purely encryption of SMS messages

before sending, and decoding of the same message on only those cellphones that we would
choose, but during the development of the application, we added some minor upgrades.

Key words: SMS, encryption, application, Android, message, signal, matrix