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Digg mcrypt_get_iv_size
Returns the size of the IV belonging to a specific cipher/mode combination
(PHP 4 >= 4.0.2, PHP 5)
mcrypt_get_iv_size() returns the size of
the Initialisation Vector (IV) in bytes. On error the function
returns 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(). Example 1297. mcrypt_get_iv_size() example<?phpSee also mcrypt_get_block_size(), mcrypt_enc_get_iv_size() and mcrypt_create_iv(). |
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mcrypt_cbc mcrypt_cfb mcrypt_create_iv mcrypt_decrypt mcrypt_ecb mcrypt_enc_get_algorithms_name mcrypt_enc_get_block_size mcrypt_enc_get_iv_size mcrypt_enc_get_key_size mcrypt_enc_get_modes_name mcrypt_enc_get_supported_key_sizes mcrypt_enc_is_block_algorithm_mode mcrypt_enc_is_block_algorithm mcrypt_enc_is_block_mode mcrypt_enc_self_test mcrypt_encrypt mcrypt_generic_deinit mcrypt_generic_end mcrypt_generic_init mcrypt_generic mcrypt_get_block_size mcrypt_get_cipher_name mcrypt_get_iv_size mcrypt_get_key_size mcrypt_list_algorithms mcrypt_list_modes mcrypt_module_close mcrypt_module_get_algo_block_size mcrypt_module_get_algo_key_size mcrypt_module_get_supported_key_sizes mcrypt_module_is_block_algorithm_mode mcrypt_module_is_block_algorithm mcrypt_module_is_block_mode mcrypt_module_open mcrypt_module_self_test mcrypt_ofb mdecrypt_generic |
