Cryptography is a technique used to hide the meaning of a message and is derived from the Greek word kryptos (hidden).Complete sample project PDF file is available for download.

Summary Of Cryptography:

 

Cryptography is the science of writing in secret code and is  an ancient art the first documented use of cryptography in writing dates back to 1900 B.C. when an Egyptian scribe used non-standard hieroglyphs in an inscription. Some experts argue that cryptography appeared spontaneously sometime after writing was invented, with applications ranging from diplomatic missives to war-time battle plans. It is no surprise, then, that new forms of cryptography came soon after the widespread development of computer communication. In data and telecommunications, cryptography is necessary when communicating over any untrusted medium, which includes just about any network, particularly the Internet.

Cryptography is a technique used to hide the meaning of a message and is derived from the Greek word kryptos (hidden). This is different from steganographic techniques in that one is not hiding the actual message, only the meaning of the message. If a message were to fall into the hands of the wrong person, cryptography should ensure that, that message could not be read. Typically the sender and receiver agree upon a message scrambling protocol beforehand and agree upon methods for encrypting and decryption messages. Cryptography is further divided into two implementation techniques and those include transposition and substitution.

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