TY - JOUR T1 - Public-Key Cryptography JF - Handbook of Information and Communication Security Y1 - 2010 A1 - Katz, Jonathan AB - Public-key cryptography ensures both secrecy and authenticity of communication using public-key encryption schemes and digital signatures, respectively. Following a brief introduction to the public-key setting (and a comparison with the classical symmetric-key setting), we present rigorous definitions of security for public-key encryption and digital signature schemes, introduce some number-theoretic primitives used in their construction, and describe various practical instantiations. M3 - 10.1007/978-3-642-04117-4_2 ER -