Covert Messaging through TCP Timestamps

Covert Messaging through TCP Timestamps

Covert channels exist in most communications systems and allow individuals to communicate truly undectably. However, covert channels are seldom used due to their complexity. A protocol for sending data over a common class of low-bandwidth covert channels has been developed. The protocol is secure ag...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Giffin, John, Greenstadt, Rachel, Litwack, Peter, Tibbetts, Richard
Format: Buchkapitel
Sprache:eng
Schlagworte:
Applied sciences
Exact sciences and technology
Hash Function
Miscellaneous
Occupation Number
Packet Header
Shared Secret
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Transmission Control Protocol
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Beschreibung
Zusammenfassung:Covert channels exist in most communications systems and allow individuals to communicate truly undectably. However, covert channels are seldom used due to their complexity. A protocol for sending data over a common class of low-bandwidth covert channels has been developed. The protocol is secure against attack by powerful adversaries. The design of a practical system implementing the protocol on a standard platform (Linux) exploiting a channel in a common communications system (TCP timestamps) is presented. A partial implementation of this system has been accomplished.
ISSN:0302-9743
1611-3349
DOI:10.1007/3-540-36467-6_15