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mcrypt_cfb

(PHP 3>= 3.0.8, PHP 4 >= 4.0b1)

mcrypt_cfb -- Encrypt/decrypt data in CFB mode

Description

string mcrypt_cfb (int cipher, string key, string data, int mode, string iv)

string mcrypt_cfb (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_cfb() encrypts or decrypts (depending on mode) the data with cipher and key in CFB 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_ecb(), and mcrypt_ofb().

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