mcrypt_enc_get_iv_size
(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)
mcrypt_enc_get_iv_size — Returns the size of the IV of the opened algorithm
Advertencia
Esta función ha sido declarada OBSOLETA a partir de PHP 7.1.0 y será ELIMINADA a partir de PHP 7.2.0. Su uso está totalmente desaconsejado.
Descripción
This function returns the size of the IV of the algorithm specified by the encryption descriptor in bytes. An IV is used in cbc, cfb and ofb modes, and in some algorithms in stream mode.
Parámetros
-
td -
The encryption descriptor.
Valores devueltos
Returns the size of the IV, or 0 if the IV is ignored by the algorithm.
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