Function.mcrypt-enc-get-iv-size
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mcrypt_enc_get_iv_size — Returns the size of the IV of the opened algorithm
Beschreibung
int mcrypt_enc_get_iv_size ( resource $td )
This function returns the size of the IV of the algorithm specified by the
encryption descriptor in bytes. An IV is used in cbc, cfb and ofb modes,
and in some algorithms in stream mode.
Parameter-Liste
- td
- The encryption descriptor.
Rückgabewerte
Returns the size of the IV, or 0 if the IV is ignored in the algorithm.