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use crate::utils::{adler64, inverse_mod, powmod};
use crate::window_state::WindowState;
use eframe::egui;
pub struct Window {
message: String,
key: String,
signed: Option<u64>,
error: Option<String>,
}
impl Default for Window {
fn default() -> Self {
Self {
message: String::new(),
key: String::new(),
signed: None,
error: None,
}
}
}
impl Window {
fn sign(&mut self) {
let split = self.key.split(",").collect::<Vec<&str>>();
if split.len() != 2 {
self.signed = None;
self.error = Some("Неверный формат ключа".to_string());
return;
}
let y = match split[0].parse::<u64>() {
Ok(num) => num,
Err(_) => {
self.signed = None;
self.error = Some("Не удалось прочитать открытый ключ".to_string());
return;
}
};
let p = match split[1].parse::<u64>() {
Ok(num) => num,
Err(_) => {
self.signed = None;
self.error = Some("Не удалось прочитать модуль".to_string());
return;
}
};
let h = adler64(self.message.as_bytes()) % p;
let h1 = inverse_mod(h as i64, p as i64) as u64;
self.signed = Some(powmod(y, h1, p));
}
}
impl WindowState for Window {
fn get_name(&self) -> &str {
"Подделать подпись"
}
fn update(&mut self, ui: &mut egui::Ui) {
ui.label("Сообщение для подписи:");
let resp1 = ui.add(egui::TextEdit::multiline(&mut self.message));
ui.label("Открытый ключ:");
let resp2 = ui.add(egui::TextEdit::singleline(&mut self.key));
if resp1.changed() || resp2.changed() {
self.signed = None;
self.error = None;
}
if ui.button("Подписать").clicked() {
self.sign();
}
if let Some(signature) = &self.signed {
let mut tmp = signature.to_string();
ui.horizontal(|ui| {
ui.label("Подпись:");
ui.add_enabled(false, egui::TextEdit::singleline(&mut tmp));
});
if ui.button("Скопировать подпись").clicked() {
ui.output().copied_text = tmp.clone();
}
if ui.button("Скопировать сообщение").clicked() {
ui.output().copied_text = self.message.clone();
}
}
if let Some(error) = &self.error {
ui.label(error);
}
}
}
|
