main.rs

use minisign::{KeyPair, SecretKeyBox};
use std::io::Cursor;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let key_pair = KeyPair::generate_encrypted_keypair(Some("pw".to_owned()))?;

    eprintln!("loading secret key from box");
    works(&key_pair)?;
    eprintln!("using secret key directly");
    fails(&key_pair)?;

    Ok(())
}

fn fails(key_pair: &KeyPair) -> Result<(), Box<dyn std::error::Error>> {
    let data = vec![1, 2, 3];

    minisign::sign(
        Some(&key_pair.pk),
        &key_pair.sk,
        Cursor::new(&data),
        true,
        None,
        None,
    )?;

    Ok(())
}

fn works(key_pair: &KeyPair) -> Result<(), Box<dyn std::error::Error>> {
    let data = vec![1, 2, 3];
    let sk_string = key_pair.sk.to_box(None)?.to_string();
    let loaded_sk =
        SecretKeyBox::from_string(&sk_string)?.into_secret_key(Some("pw".to_owned()))?;

    minisign::sign(
        Some(&key_pair.pk),
        &loaded_sk,
        Cursor::new(&data),
        true,
        None,
        None,
    )?;

    Ok(())
}