4 releases
Uses old Rust 2015
0.1.4 | Dec 4, 2018 |
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0.1.3 | Dec 2, 2018 |
0.1.2 | Nov 8, 2018 |
0.1.1 | Nov 8, 2018 |
#13 in #one-time
25KB
277 lines
winternitz
winternitz is a small crate implementing a quantum-resistant one-time signature
scheme, the LDWM_SHA256_M20_W8
variant of LDWM (but not MTS) as described in
https://tools.ietf.org/html/draft-mcgrew-hash-sigs-02.
Usage
Each private key may only be used to sign ONE message. Signing multiple messages with a single key could reveal your private key data.
extern crate rand;
extern crate winternitz;
use rand::{thread_rng, RngCore};
fn main() {
// Fill up the space of a new private key with entropy.
let mut privkey = [0; winternitz::PRIVKEY_SIZE];
thread_rng().fill_bytes(&mut privkey);
// Generate your public key from your private key.
let mut pubkey = [0; winternitz::PUBKEY_SIZE];
winternitz::derive_pubkey(&privkey, &mut pubkey).unwrap();
// Sign a message.
let msg = b"squeamish ossifrage";
let mut sig = [0; winternitz::SIG_SIZE];
winternitz::sign(&privkey, msg, &mut sig).unwrap();
// Verify a signature.
assert!(winternitz::verify(&pubkey, msg, &sig).unwrap());
}
Dependencies
~4MB
~53K SLoC