Bruce Christianson (auth.), Bruce Christianson, Bruno's Security Protocols: 14th International Workshop, Cambridge, PDF

By Bruce Christianson (auth.), Bruce Christianson, Bruno Crispo, James A. Malcolm, Michael Roe (eds.)

ISBN-10: 3642049044

ISBN-13: 9783642049040

This booklet constitutes the completely refereed post-proceedings of the 14th foreign Workshop on safeguard Protocols, held in Cambridge, united kingdom, in March 2006.

The 21 revised complete papers awarded including edited transcriptions of a few of the discussions following the shows have gone through a number of rounds of reviewing, revision, and choice. one of the themes addressed are authentication, anonymity, cryptographics and biometrics, cryptographic protocols, community protection, privateness, SPKI, user-friendliness, entry regulate, API safety, expenditures of safeguard, and others.

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Additional info for Security Protocols: 14th International Workshop, Cambridge, UK, March 27-29, 2006, Revised Selected Papers

Example text

We now briefly describe the attack on the Secure Messaging For Keys command of the CCA, which allows us to extract secret keys (and PIN updates) 44 B. Adida et al. being sent to a smartcard, and inject our own keys and messages without authorisation. The CCA command Secure Messaging For Keys is basically a special kind of key export. It takes a key stored locally on an HSM, decrypts it, then formats it up as part of a secure message. This secure message format is specified by template input arguments to the command – consisting of a template and and offset at which to insert the encrypted data.

Lack of trusted display means there is no way to confirm who you are doing business with, and what amount is being transacted, so it becomes possible to relay the entire data stream to another location. Let’s look at these two well-known drawbacks in more detail. 1 Eavesdropping POS Terminals If account and PIN data can be eavesdropped from an EMV transaction at a Point-Of-Sale (POS) terminal, it is easy to make a magnetic stripe card containing that data, for fraudulent use in a foreign country where EMV is not supported.

With Phish and Chips 45 4. consider the first |plaintext | blocks of c, effectively discarding the last block. This truncated value is simply {plaintext }K2 , our desired result. This very straightforward observation undermines any security merits of the template-fill-in operation of the HSM – the programmer might as well be able to use the special wrapping key shared between HSM and card in a conventional Data_Encrypt command. 3 Extracting Keys Such message injection can compromise the operation of particular cards actively, for instance by constructing a message containing a known PIN for the card.

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Security Protocols: 14th International Workshop, Cambridge, UK, March 27-29, 2006, Revised Selected Papers by Bruce Christianson (auth.), Bruce Christianson, Bruno Crispo, James A. Malcolm, Michael Roe (eds.)


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