openpgp-card/openpgp-card-examples/src/bin/detach-sign.rs
2022-03-29 22:40:26 +02:00

54 lines
1.3 KiB
Rust

// SPDX-FileCopyrightText: 2021 Wiktor Kwapisiewicz <wiktor@metacode.biz>
// SPDX-License-Identifier: MIT OR Apache-2.0
use openpgp_card::OpenPgp;
use openpgp_card_pcsc::PcscBackend;
use openpgp_card_sequoia::card::Open;
use openpgp::parse::Parse;
use openpgp::serialize::stream::{Armorer, Message, Signer};
use openpgp::Cert;
use sequoia_openpgp as openpgp;
fn main() -> Result<(), Box<dyn std::error::Error>> {
let args = std::env::args().collect::<Vec<_>>();
if args.len() < 3 {
eprintln!("Usage: detach-sign card-ident pin-file cert-file");
return Ok(());
}
let card_ident = &args[0];
let pin_file = &args[1];
let cert_file = &args[2];
let mut card = PcscBackend::open_by_ident(card_ident, None)?;
let mut pgp = OpenPgp::new(&mut card);
let mut open = Open::new(pgp.transaction()?)?;
let pin = std::fs::read(pin_file)?;
open.verify_user_for_signing(&pin)?;
let mut sign = open.signing_card().unwrap();
let cert = Cert::from_file(cert_file)?;
let s = sign.signer(&cert)?;
let stdout = std::io::stdout();
let message = Message::new(stdout);
let message = Armorer::new(message).build()?;
let signer = Signer::new(message, s);
let mut signer = signer.detached().build()?;
std::io::copy(&mut std::io::stdin(), &mut signer)?;
signer.finalize()?;
Ok(())
}