Shannon introduced the classic model of a cryptosystem in 1949, where Eve has access to
an identical copy of the cyphertext that Alice sends to Bob. Shannon defined perfect secrecy …

Secure communications are becoming increasingly relevant in the development of space
technology. Well-established cryptographic technology is already in place and is expected …

Wiretap channels form the most basic building block of physical-layer and information-
theoretic security. Considerable research work has gone into the information-theoretic …

We derive a lower bound on the secrecy capacity of a compound wiretap channel with
channel state information at the transmitter which matches the general upper bound on the …

We study the problem of achieving strong secrecy over wiretap channels at negligible cost,
in the sense of maintaining the overall communication rate of the same channel without …

This paper is concerned with coding theorems for a generalized wiretap channel. In the
problem of the wiretap channel it is important to characterize the secrecy capacity, ie, the …

The issues of privacy and security in wireless communication networks have taken on an
increasingly important role as these networks continue to flourish worldwide. Traditionally …

We investigate the fundamental secrecy limits of arbitrary wiretap channels using the
information-spectrum approach and we provide a random coding theorem for the secrecy …

In a point-to-point communication system, which consists of a sender, a receiver, and a set of
noiseless channels, the sender wishes to transmit a private message to the receiver through …

Reliable communication imposes an upper limit on the achievable rate, namely the
Shannon capacity. Wyner's wiretap coding ensures a security constraint and reliability, but …