The Sources of Randomness in Smartphones with Symbian OS

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Authors	KRHOVJÁK Jan ŠVENDA Petr MATYÁŠ Václav SMOLÍK Luděk
Year of publication	2007
Type	Article in Proceedings
Conference	Security and Protection of Information 2007
MU Faculty or unit	Faculty of Informatics
Citation
Field	Informatics
Keywords	CCD; CMOS; entropy; mobile device; smartphone; source of randomness; Symbian.
Description	This paper is focused on the analysis of randomness sources available in current mobile phones. We discuss specifics of the mobile devices, identify potential sources of randomness, and define types of possible attackers. An analysis of a camera and a microphone input noise as a source of randomness has been performed and amount of available entropy estimated.
Related projects:	Cryptographic random and pseudo-random number generators