mcrypt_generic_init

    (PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)

    mcrypt_generic_init — This function initializes all buffers needed for encryption

    Advertencia

    Esta función ha sido declarada OBSOLETA a partir de PHP 7.1.0 y será ELIMINADA a partir de PHP 7.2.0. Su uso está totalmente desaconsejado.

    Descripción

    mcrypt_generic_init(resource$td, string$key, string$iv): int

    You need to call this function before every call to mcrypt_generic() or mdecrypt_generic().

    Parámetros

    td

    The encryption descriptor.

    key

    The maximum length of the key should be the one obtained by calling mcrypt_enc_get_key_size() and every value smaller than this is legal.

    iv

    The IV should normally have the size of the algorithms block size, but you must obtain the size by calling mcrypt_enc_get_iv_size(). IV is ignored in ECB. IV MUST exist in CFB, CBC, STREAM, nOFB and OFB modes. It needs to be random and unique (but not secret). The same IV must be used for encryption/decryption. If you do not want to use it you should set it to zeros, but this is not recommended.

    Valores devueltos

    The function returns a negative value on error: -3 when the key length was incorrect, -4 when there was a memory allocation problem and any other return value is an unknown error. If an error occurs a warning will be displayed accordingly. false is returned if incorrect parameters were passed.

    Ver también

    To Top