2 results listed
In this study, an application sending location via short message(SMS) has been developed for smartphones using Android operating system while internet is disabled in case of emergency. If Global Position System(GPS) of user’s phone is disabled, the application warns the user by vibration and screen message. In emergency calls is to inform emergency call center by sending SMS or to send SMS to a predetermined number about the coordinate of caller by using A-GPS(Assisted GPS) feature.eveloped application has tested both indoors and outdoors as well as on different brands and models of Android. The error rate of outdoor tests is approximately 10-15 meters and the indoor result is approximately 15-30 meters. Transmission times of SMS are 14-32 seconds and 20-92 seconds respectively. SMS transmission time differs from region to region depending on
connection time to base station and magnetic pollution.
International Conference on Cyber Security and Computer Science
ICONCS
Abdurrahman HAZER
İbrahim ÖZER
Remzi YILDIRIM
In this work, cryptography has been developed to
ensure that confidential information is communicated securely.
As a method, a randomly generated phase mask and a grey level
picture made entirely of noise is used. The information that is
corrupted in phase is placed in this noisy image according to a
predetermined algorithm. First of all, the image is closed with a
randomly generated phase mask and then the pixel values of the
image whose phase value is completely corrupted are scattered
into the carrier by sliding along with certain mathematical
operations. In order to recover the encrypted image and
information, carrier and randomly generated phase keys are
used respectively. It has been tested that the reliability of the
algorithm developed with two keys and robustness of the
algorithm to noise attacks. In addition, the reliability of the
developed algorithm is also tested with techniques such as
correlation, histogram and contrast stretching.
International Conference on Cyber Security and Computer Science
ICONCS
Abdurrahman HAZER
İbrahim ÖZER
Remzi YILDIRIM