You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
111 lines
3.5 KiB
111 lines
3.5 KiB
#![cfg_attr(nightly, feature(asm))]
|
|
|
|
|
|
#![allow(dead_code)]
|
|
|
|
//extern crate test;
|
|
|
|
#[macro_use] mod ext; #[allow(unused_imports)] use ext::*;
|
|
|
|
mod key;
|
|
mod cha;
|
|
mod stream;
|
|
|
|
use key::{Key, IV};
|
|
|
|
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
|
|
pub enum Mode
|
|
{
|
|
Encrypt, Decrypt, Keygen
|
|
}
|
|
|
|
fn keys() -> Result<(Mode, Key, IV), base64::DecodeError>
|
|
{
|
|
let mut args = std::env::args();
|
|
let prog_name = args.next().unwrap();
|
|
|
|
let mode = match args.next()
|
|
.map(|x| x.chars().next().map(|x| x.to_ascii_lowercase()))
|
|
.flatten()
|
|
{
|
|
Some('e') => Mode::Encrypt,
|
|
Some('d') => Mode::Decrypt,
|
|
Some('k') => Mode::Keygen,
|
|
other => {
|
|
eprintln!("{} (v{}) - chacha20_poly1305 command line encryption tool",
|
|
env!("CARGO_PKG_NAME"),
|
|
env!("CARGO_PKG_VERSION"));
|
|
eprintln!(" by {} with <3 (licensed GPL v3.0 or later)", env!("CARGO_PKG_AUTHORS"));
|
|
eprintln!("\nStreams stdin to stdout through a chacha20_poly1305 cipher.");
|
|
eprintln!();
|
|
eprintln!("Usage: {} encrypt [<base64 key>] [<base64 iv>]", prog_name);
|
|
eprintln!("Usage: {} decrypt [<base64 key>] [<base64 iv>]", prog_name);
|
|
eprintln!("Usage: {} keygen [<base64 key>] [<base64 iv>]", prog_name);
|
|
eprintln!("Usage: {} help", prog_name);
|
|
eprintln!();
|
|
eprintln!("(Key size is {}, IV size is {})", cha::KEY_SIZE, cha::IV_SIZE);
|
|
eprintln!("(requires OpenSSL 1.1.0 or newer)");
|
|
eprintln!("\nencrypt/decrypt:\n\tIf a key and/or IV are not provided, they are generated randomly and printed to stderr in order on one line each.");
|
|
eprintln!("\tIf the key and/or IV provided's size is lower than the cipher's key/IV size, the rest of the key/IV is padded with 0s. If the size is higher, the extra bytes are ignored.");
|
|
eprintln!("\nkeygen:\n\tThe key/iv is printed in the same way as auto-generated keys for the en/decryption modes, but to stdout instead of stderr. If a key is given as parameter, the key is not printed. If the iv is given as a parameter also, nothing is printed.");
|
|
eprintln!("\nhelp:\n\tPrint this message to stderr then exit with code 0");
|
|
std::process::exit(if other == Some('h') {0} else {1})
|
|
}
|
|
};
|
|
|
|
let key = match args.next() {
|
|
Some(key) => key.parse()?,
|
|
None => {
|
|
let key = Key::new();
|
|
if mode == Mode::Keygen {
|
|
println!("{}", base64::encode(&key));
|
|
} else {
|
|
eprintln!("{}", base64::encode(&key));
|
|
}
|
|
key
|
|
},
|
|
};
|
|
let iv = match args.next() {
|
|
Some(iv) => iv.parse()?,
|
|
None => {
|
|
let iv = IV::new();
|
|
if mode == Mode::Keygen {
|
|
println!("{}", base64::encode(&iv));
|
|
} else {
|
|
eprintln!("{}", base64::encode(&iv));
|
|
}
|
|
iv
|
|
},
|
|
};
|
|
|
|
Ok((mode, key, iv))
|
|
}
|
|
|
|
fn main() {
|
|
|
|
let (mode, key, iv) = keys().expect("Failed to read keys from argv (base64)");
|
|
|
|
let stdout = std::io::stdout();
|
|
let input = std::io::stdin();
|
|
|
|
// Streaming
|
|
use std::io::Write;
|
|
match mode
|
|
{
|
|
Mode::Encrypt => {
|
|
let mut output = stream::Sink::encrypt(stdout.lock(), key, iv).expect("Failed to create encrypter");
|
|
std::io::copy(&mut input.lock(), &mut output).expect("Failed to encrypt");
|
|
output.flush().expect("Failed to flush stdout");
|
|
},
|
|
Mode::Decrypt => {
|
|
let mut output = stream::Sink::decrypt(stdout.lock(), key, iv).expect("Failed to create decrypter");
|
|
std::io::copy(&mut input.lock(), &mut output).expect("Failed to decrypt");
|
|
output.flush().expect("Failed to flush stdout");
|
|
},
|
|
Mode::Keygen => {
|
|
//println!("{}", base64::encode(&key));
|
|
//println!("{}", base64::encode(&iv));
|
|
},
|
|
}
|
|
}
|