Abstract Quantum Key Distribution (QKD) is a method for transmitting a cryptographic key
between a sender and receiver in a theoretically unconditionally secure way. Unfortunately …

Secure communications and cryptography is as old as civilization itself. The Greek Spartans
for instance would cipher their military messages and, for Chinese, just the act of writing the …

This work describes the using of Universal and Strongly Universal classes of hash functions
for unconditionally secure message authentication in quantum cryptogra-phy. Different …