(3.0.8 - 3.0.18 only, PHP 4 >= 4.0.0)
mcrypt_ofb -- Encrypt/decrypt data in OFB mode
Description
string mcrypt_ofb (int cipher, string key, string data, int mode,
string iv)
string mcrypt_ofb (string cipher, string key, string data, int mode [,
string iv])
The first prototype is when linked against libmcrypt 2.2.x, the second when linked against
libmcrypt 2.4.x.
mcrypt_ofb() encrypts or decrypts (depending on mode) the
data with cipher and key in OFB cipher mode and returns
the resulting string.
Cipher is one of the MCRYPT_ciphername constants.
Key is the key supplied to the algorithm. It must be kept secret.
Data is the data which shall be encrypted/decrypted.
Mode is MCRYPT_ENCRYPT or MCRYPT_DECRYPT.
IV is the initialization vector.
See also: mcrypt_cbc(), mcrypt_cfb(), and
mcrypt_ecb().
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