Computer Science – Cryptography and Security
Scientific paper
2009-10-12
Computer Science
Cryptography and Security
14 pages, 2 figures and 1 table
Scientific paper
In 2006, Peris-Lopez et al. [1, 2, 3] initiated the design of ultralightweight RFID protocols -with the UMAP family of protocols- involving only simple bitwise logical or arithmetic operations such as bitwise XOR, OR, AND, and addition. This combination of operations was revealed later to be insufficient for security. Then, Chien et al. proposed the SASI protocol [4] with the aim of offering better security, by adding the bitwise rotation to the set of supported operations. The SASI protocol represented a milestone in the design of ultralightweight protocols, although certain attacks have been published against this scheme [5, 6, 7]. In 2008, a new protocol, named Gossamer [8], was proposed that can be considered a further development of both the UMAP family and SASI. Although no attacks have been published against Gossamer, Lee et al. [9] have recently published an alternative scheme that is highly reminiscent of SASI. In this paper, we show that Lee et al.'s scheme fails short of many of its security objectives, being vulnerable to several important attacks like traceability, full disclosure, cloning and desynchronization.
der Lubbe Jan C. A. van
Hernandez-Castro Julio C.
Peris-Lopez Pedro
Tapiador Juan M. E.
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