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Computer Identification Using JavaScript Timestamps
Jireš, Michal ; Večeřa, Vojtěch (referee) ; Polčák, Libor (advisor)
This thesis deals with remote computer identification based on its internal clock skew. This clock skew will be determined using JavaScript timestamps. The goal of this thesis is to create web page, that will use clock skew to identify computer. This web page will also be used to test time distortion capabilities of browser extension JavaScript Restrictor. Web page will try to identify computer using different security presents thus testing their efficiency.
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Computer Identity Based on Its Internal Clock Skew
Franková, Barbora ; Matoušek, Petr (referee) ; Polčák, Libor (advisor)
Thesis deals with remote computer identification based on its internal clock skew. It describes various methods to collect and evaluate time-related data extracted from TCP, ICMP and Javascript. Software package that implements some of those methods is attached as well. During the work, many experiments were carried out to find out possible effects of certain factors. Tests were aimed on software (operation systems, web browsers and time synchronization) as well as hardware (temperature, power source, distance and network connection type) of the remote systems. Interesting results were discovered in areas of IPv4/IPv6 address pairing and NTP time synchronization.
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Computer Identification Using JavaScript Timestamps
Jireš, Michal ; Večeřa, Vojtěch (referee) ; Polčák, Libor (advisor)
This thesis deals with remote computer identification based on its internal clock skew. This clock skew will be determined using JavaScript timestamps. The goal of this thesis is to create web page, that will use clock skew to identify computer. This web page will also be used to test time distortion capabilities of browser extension JavaScript Restrictor. Web page will try to identify computer using different security presents thus testing their efficiency.
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Computer Identity Based on Its Internal Clock Skew
Franková, Barbora ; Matoušek, Petr (referee) ; Polčák, Libor (advisor)
Thesis deals with remote computer identification based on its internal clock skew. It describes various methods to collect and evaluate time-related data extracted from TCP, ICMP and Javascript. Software package that implements some of those methods is attached as well. During the work, many experiments were carried out to find out possible effects of certain factors. Tests were aimed on software (operation systems, web browsers and time synchronization) as well as hardware (temperature, power source, distance and network connection type) of the remote systems. Interesting results were discovered in areas of IPv4/IPv6 address pairing and NTP time synchronization.
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