(PECL haru >= 0.0.1)
HaruDoc::setEncryptionMode — Set encryption mode for the document
$mode
[, int $key_len = 5
] )Defines encryption mode for the document. The encryption mode cannot be set before setting the password.
mode
The encryption mode to use. Can be one of the following:
HaruDoc::ENCRYPT_R2 - use "revision2"
algorithm.
HaruDoc::ENCRYPT_R3 - use "revision3"
algorithm. Using this value bumps the version of PDF to 1.4.
key_len
The encryption key length in bytes. This parameter is optional and used only
when mode is HaruDoc::ENCRYPT_R3. The default
value is 5 (40bit).
Returns TRUE on success.
发生错误时抛出 HaruException 异常。