Encrypt the specified SD card file.
The path starts in the root directory of the SD card e.g. secret.txt, secret/recording.mp3
Key Name is the name of the encryption key to use.
Usually the key is deleted after encryption, set Leave Key if you have more files to encrypt.
There must be space left on the SD card at least equal to the size of the file before starting encryption.
See Encryption in the Userguide for details.
You can also access Tasker's encryption features via File Magic, a Tasker-integrated file manager.