Cryptography
Cryptography is derived from a Greek word “crypto” meaning
hidden or secret, and “graphien” which means “writing”. Cryptology is the study
of techniques that help us in performing secure communications through networks
without allowing the information dissemination to the adversaries or any other
unauthorized third party. It involves concepts
of data integrity and confidentiality and calls for strict
authentication. Cryptography involves processes such as Encryption, Decryption,
and
Cryptanalysis
etc. Different types of cryptography include Symmetric Key encryption where
both the sender and receiver share the same key and Public key Cryptography
where the sender and receiver have different keys. Cryptography has always
gained genuine traction from intelligence and law enforcement agencies. The
crime investigation agencies have groups of cryptanalysts who are continuously
involved in the decryption of un-cracked ciphers and generating new, stronger
ciphers for encryption.
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