(PHP 3>= 3.0.8, 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().
