| Author | Brendel, Jacqueline; Fischlin, Marc |
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| Date | 2017 |
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| Type | Conference Proceedings |
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| Abstract | The Extended Access Control (EAC) protocol allows to create a shared cryptographic key
between a client and a server. While originally used in the context of identity card systems and machine
readable travel documents, the EAC protocol is increasingly adopted as a universal solution to secure
transactions or for attribute-based access control with smart cards. Here we discuss how to enhance
the EAC protocol by a so-called zero-round trip time (0RTT) mode. Through this mode the client can,
without further interaction, immediately derive a new key from cryptographic material exchanged in
previous executions. This makes the 0RTT mode attractive from an efficiency viewpoint such that the
upcoming TLS 1.3 standard, for instance, will include its own 0RTT mode. Here we show that also
the EAC protocol can be augmented to support a 0RTT mode. Our proposed EAC+0RTT protocol
is compliant with the basic EAC protocol and adds the 0RTT mode smoothly on top. We also prove
the security of our proposal according to the common security model of Bellare and Rogaway in the
multi-stage setting. |
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| Isbn | 978-3-319-66401-9 |
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| Serie | Lecture notes in computer science |
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| In | Computer Security – ESORICS 2017. 22nd European Symposium on Research in Computer Security, Proceedings, p.297-314 |
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| Publisher | Springer International Publishing |
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| Partn | TUD-CS-2017-0212 |
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| Url | https://tubiblio.ulb.tu-darmstadt.de/id/eprint/98112 |
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