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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_sizeReturns 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

mcrypt_enc_get_iv_size(resource $td): int

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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