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mcrypt encode and decode

#1
I am using codeigniter 2x, and I need to decode string I have been given, and that string containes array. For that I got a key, iv, cipher and mode.
I figure out how to set key, cipher and mode:
Code:
$this->load->library('encrypt');
$this->encrypt->set_cipher(MCRYPT_RIJNDAEL_128);
$this->encrypt->set_mode(MCRYPT_MODE_CBC);
$key = 'mysomekey';
But I can't figure out how to use iv I have been give, and decode that string.
On net I did found only this:
Code:
$o = $this->encrypt->decode($o,$key);
Can anyone helps me?
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#2
Hi

This is correct. Just ensure you set the same params in setting/retreiving the encryption string, that way you return the data as is. I use this same method when encrypting get in url sending to emails Smile
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