Function decrypt_file 

pub fn decrypt_file(c: &Config) -> Result<(), Error>

Decrypts a file using the options wrapped in a Config.

Errors

Returns an Error if:

• any of the I/O operations fail (IoError)
• the two input files differ in length (InvalidInput)

Example

use onetime_cli::Config;
use onetime_cli::decrypt_file;
use onetime_cli::Error;

let c = Config::new("secret.txt");

let res = decrypt_file(&c)?;