mcrypt_get_iv_size

PHP Manual
Prev		Next

mcrypt_get_iv_size

(PHP4 CVS only)

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

Description

int mcrypt_get_iv_size (string cipher, string mode)

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

Cipher is one of the MCRYPT_ciphername constants of the name of the algorithm as string.

Mode is one of the MCRYPT_MODE_modename constants of one of "ecb", "cbc", "cfb", "ofb", "nofb" or "stream".

Prev	Home	Next
mcrypt_list_modes	Up	mcrypt_encrypt