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: http://old.hcs.cmc.msu.ru/php/function.mcrypt-get-iv-size.html
Дата изменения: Sun Feb 3 22:45:03 2002 Дата индексирования: Mon Oct 1 22:59:06 2012 Кодировка: |
(PHP 4 >= 4.0.2)
mcrypt_get_iv_size -- Returns the size of the IV belonging to a specific cipher/mode combinationThe first prototype is when linked against libmcrypt 2.2.x, the second when linked against libmcrypt 2.4.x.
mcrypt_get_iv_size() 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.
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".
Td is the algorithm specified.