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Cryptography is a form of hiding the text so to increase the security of the information. It can also be defined as the process of converting the valuable information into some form of non-scene information which can be understand able by the sender and the intended receiver only. On the other hand the main purpose of using coding is to reduce the error probability and to increase the efficiency of the channel. There are mainly two types of coding used in every system i.e. source coding and channel coding.
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