(PECL imagick 2 >= 2.3.0, PECL imagick 3)
Imagick::decipherImage — Deciphers an image
Deciphers image that has been enciphered before. The image must be enciphered using Imagick::encipherImage(). This method is available if Imagick has been compiled against ImageMagick version 6.3.9 or newer.
passphrase
The passphrase
Returns true
on success.