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encryption means converting a given data or text or program into some codified form. This encrypted form can not be understood by any one easily. One needs to decrypt the encrypted data by using the opposite process of encryption.


Encryption is the most effective way to achieve data security. To read an encrypted file, you must have access to a secret key or password that enables you to decrypt it. Unencrypted data is called plain text ;encrypted data is referred to as cipher text.
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