Various methods of protecting secret images and images holding secret data.

Cryptography is a method of protecting information and communications through the use of codes, so that only those for whom the information is intended can read and process it. The prefix "crypt-" means "hidden" or "vault" -- and the suffix "-graphy" stands for "writing."

Cryptography is the science of protecting information by transforming it into a secure format. ... An example of basic cryptography is a encrypted message in which letters are replaced with other characters. To decode the encrypted contents, you would need a grid or table that defines how the letters are transposed.

Cryptography is the study of concepts like Encryption, decryption, used to provide secure communication whereas encryption is the process of encoding a message with an algorithm.

Cryptography is defined as the system by which data and information of value are stored or transmitted in such a way that only those for whom it is intended can read, interpret or process it. Effectively, cryptography obscures information from unauthorized snoopers and interceptors. In the same way, it can be used to hide dubious and clandestine activities in our modern cyber world today.