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It is the study of Secret (crypto)-Writing (graph). It is the science or art of encompassing the principles and methods of transforming an intelligible message into one that is intelligible and then transforming the message back to its original form. Cryptography is a complex and mathematically challenging field of study. It involves taking some data or message and obfuscating (make unclear or hard to understand) it so that it is unreadable by parties that the message was not intended. Before the message becomes encrypted it is referred to as the plain text. Once a message becomes encrypted it is then referred to as the cipher text.
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