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encrypt and decrypt the content of file


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hi,i want to encrypt and decrypt the content of file. Now just i found the encrypt from http://www.w3schools.com/php/func_string_crypt.asp and that code work for mebut i didn't found the decrypt from w3schools....i found the decrypt tutor from http://www.php.net/manual/en/function.mcrypt-decrypt.phpbut i really don't understand.... :wacko: anyone can you explain to me....???? :facepalm:

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The crypt() function is one-way encryption which is not meant to be decrypted. The mcrypt's decrypt() function is meant for a completely different thing. Encryption always involves an algorithm and a key, if not several keys. The mcrypt_decrypt() method is for decryptying data that was encrypted with this tunction: http://www.php.net/manual/en/function.mcrypt-encrypt.php

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