PHP
PHP jest obiektowym, skryptowym jezykiem programowania zaprojektowanym do tworzenia dynamicznych stron www.Funkcje PHP
Oficjalna strona PHP
Dodatkowe aplikacje PHP
Dodatkowe modu³y PHP
Wortal PHP
(PHP 4 >= 4.0.2, PHP 5)
mcrypt_get_iv_size -- Returns the size of the IV belonging to a specific cipher/mode combinationmcrypt_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
or one of "ecb", "cbc", "cfb", "ofb", "nofb" or "stream". The IV is
ignored in ECB mode as this mode does not require it. You will need to
have the same IV (think: starting point) both at encryption and
decryption stages, otherwise your encryption will fail.
It is more useful to use the mcrypt_enc_get_iv_size() function as this uses the resource returned by mcrypt_module_open().
See also mcrypt_get_block_size(), mcrypt_enc_get_iv_size() and mcrypt_create_iv().
| Poprzedni | Spis treści | Następny |
| mcrypt_get_cipher_name | Początek rozdziału | mcrypt_get_key_size |