Cryptography's aim is to construct schemes or protocols that can still accomplish certain tasks even in the presence of an adversary. A basic task in cryptography is to enable users to communicate securely over an insecure channel in a way that guarantees their transmissions' privacy and authenticity. This installment of Crypto Corner will explain what cryptography is about and how we can scientifically justify a cryptographic scheme's security.
Index Terms:
cryptography, security, public key, PKI
Citation:
Jean-S?bastien Coron, "What Is Cryptography?," IEEE Security and Privacy, vol. 4, no. 1, pp. 70-73, Jan./Feb. 2006, doi:10.1109/MSP.2006.29