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Key agreement over a radio link

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On Bluetooth repairing: key agreement based on symmetric-key cryptography

Serge Vaudenay

Despite many good (secure) key agreement protocols based on public-key cryptography exist, secure associations between two wireless devices are often established using symmetric-key cryptography for cost reasons. The consequence is that common daily used s ...

2005

On the possibility of constructing meaningful hash collisions for public keys

Arjen Lenstra

It is sometimes argued that finding meaningful hash collisions might prove difficult. We show that for several common public key systems it is easy to construct pairs of meaningful and secure public key data that either collide or share other characteristi ...

2005

Public Key Cryptography - PKC 2005 - 8th International Workshop on Theory and Practice in Public Key Cryptography

The proceedings contain 28 papers from the Public Key Cryptography - PKC 2005 - 8th International Workshop on Theory and Practice in Public Key Cryptography. The topics discussed include: a new related message attack on RSA; breaking a cryptographic protoc ...

Springer2005

A Formal Semantics For Protocol Narrations

Sébastien Briais

Protocol narrations are an informal means to describe, in an idealistic manner, the functioning of cryptographic protocols as a single intended sequence of cryptographic message exchanges among the protocol's participants. Protocol narrations have also bee ...

2005

Location verification and key management in wireless networks

Srdan Capkun

This thesis is primarily concerned with two security mechanisms for wireless networks: location verification and key management. These mechanisms are potential building blocks in the security architectures of a range of applications. Under location verific ...

EPFL2004

Quantum Cryptography : On the Security of the BB84 Key-Exchange Protocol

Thomas Baignères

In 1984, C.H. Bennet and G. Brassard proposed a new protocol aimed to solve the problem of symmetric cryptographic key exchange. This protocol was called BB84 after the name of its authors. While a traditional method would rely on public key cryptography ( ...

2003

High performance VLSI architectures implementing strong cryptographic primitives

Feth Allah Cherigui

The main topic of this thesis is related to the state of the art in designing cryptographic primitives from a hardware point of view. A special emphasis is dedicated to low-power/low-energy CMOS design. A set of solutions is proposed including an LFSR base ...

EPFL2002

Building blocks for secure services

Levente Buttyan

This thesis is concerned with two security mechanisms: authenticated key transport and rational exchange protocols. These mechanisms are potential building blocks in the security architecture of a range of different services. Authenticated key transport pr ...

EPFL2002

InK-edge extended X-ray absorption fine structure of InGaN epilayers and quantum boxes

Nicolas Grandjean

Extended X-ray absorption fine structure (EXAFS) above the In K-edge of luminescent InGaN heterostructures provides a unique probe of local structure on an atomic length scale. Through a process of fitting the experimental spectrum, we can refine a model o ...

2002

Efficient generation of prime numbers

Serge Vaudenay

The generation of prime numbers underlies the use of most public-key schemes, essentially as a major primitive needed for the creation of key pairs or as a computation stage appearing during various cryptographic setups. Surprisingly, despite decades of in ...

2000