mcrypt_get_iv_size()

mcrypt_get_iv_size - Returns the size of the IV belonging to a specific cipher/mode combination

Syntax

int mcrypt_get_iv_size ()

Arguments

-

Description

Gets the size of the IV belonging to a specific cipher / mode combination.

Version

PHP 4.0.2, 5

Return value

Returns the size of the Initialisation Vector (IV) in bytes. On error the function returns FALSE. If the IV is ignored in the specified cipher/mode combination zero is returned.