# HaruDoc::setEncryptionMode

(PECL haru:0.0.1)

HaruDoc::setEncryptionMode — Set encryption mode for the document

### Description

bool HaruDoc::setEncryptionMode ( int `$mode` [, int `$key_len` ] )

Defines encryption mode for the document. The encryption mode cannot be set before setting the password.

### Parameters

`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).

### Return Values

Returns `TRUE` on success.

### Errors/Exceptions

Throws HaruException on error.

### See Also

- HaruDoc::setPassword()
- HaruDoc::setPermission()