International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Sampath Kannan

Publications

Year
Venue
Title
2006
EPRINT
Security Protocols with Isotropic Channels
We investigate the security properties of "isotropic channels", broadcast media in which a receiver cannot reliably determine whether a message originated from any particular sender and a sender cannot reliably direct a message away from any particular receiver. We show that perfect isotropism implies perfect (information-theoretic) secrecy, and that asymptotically close to perfect secrecy can be achieved on any channel that provides some (bounded) uncertainty as to sender identity. We give isotropic security protocols under both passive and active adversary models, and discuss the practicality of realizing isotropic channels over various media.
1985
CRYPTO