A Study In Cryptography

Cryptography is the study and practice of techniques used to secure communications between parties and avoid being looked upon by third party. Generally speaking, cryptography constructs and analyzes protocols that prevent any third party of having access to private data that might concern individuals or government bodies, and it is applied to information security to ensure data confidentiality, data integrity, authentication and non-repudiation. Modern cryptography relies heavily on advanced mathematics, computer science, physics, electrical engineering, and communications science.