Short Message Service (sms) security solution for mobile devices

D. PERFORMANCE 
MEASUREMENTS 
The previous sections described the power consumption, speed and 
overhead considerations for encryption solutions. The aim of the measurements 
is to provide a means to assess an actual performance experiment of some 
encryption schemes on a specific modern device. Due to the varied hardware 
and software implementations on mobile devices, this set of measurement 
figures cannot be taken as definitive. However, it provides a comparison among 

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the different encryption schemes and a coarse estimate for programmers 
planning to implement software-based encryption in their applications.
The main tasks of this experiment were collect empirical data on the 
power consumption, the time associated with encryption and the data size 
overheads imposed by selected symmetric encryption and asymmetric 
encryption schemes. 
1. Instrumentation 
Setup 
a. Hardware 
The mobile device used for this experiment is the Eten-M600 
Smartphone. The hardware specifications for the device are listed in Table 3. 
This phone was selected because it has most of the features that can be 
expected to be found in future mobile devices. The Operating System used is the 
latest Windows Mobile™ 5.0 with a rich Application Programming Interface (API) 
support for application developers. 
Operating System
Windows Mobile™ 5.0 software for Pocket PCs 
Processor
Samsung S3C 2440 400 MHz Processor 
Memory
256 MB Flash ROM, 64 MB SDRAM 
Display
2.8", 240 x 320, 65,536 colors LTPS TFT- LCD 
Dimensions 
(LxWxH)
111.7 x 60.7 x 22 mm 
Weight
174 g 
Communications
GSM quad-band 850/900/1800/1900 MHz, GPRS 
Class B / Multi-slot Class10 Bluetooth v2.0 compliant, 
WiFi IEEE802.11b
Camera
Built-in 2.0 Mega Pixels, up to 1600 x 1200 resolution 
Expansibility
SDIO/SD/MMC card slot 
Interface/Audio
Built-in microphone and speaker, external stereo 
headset jack 
Interface/Data
USB Sync, headset jack, Cradle with 2nd battery 
charger 
Table 3. E-TEN M600 Hardware Specifications 

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Figure 13. E-TEN M600 (From Ref. [33])