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use rand::rngs::OsRng;
use rsa::{RsaPrivateKey, RsaPublicKey, PublicKeyParts};
use rsa::pkcs1::{ToRsaPrivateKey, ToRsaPublicKey};
use std::env;
use std::fs::File;
use std::io::Write;
fn main() {
// 引数からターゲットの文字列を取得
let args: Vec<String> = env::args().collect();
if args.len() != 2 {
eprintln!("Usage: {} <target_string>", args[0]);
std::process::exit(1);
}
let target_string = &args[1];
println!("Target {}", target_string);
let mut attempt_count = 0;
loop {
attempt_count += 1;
println!("{}: Generating RSA-4096 key pair...", attempt_count);
// ランダムなRSA-4096鍵ペアを生成する
let mut rng = OsRng;
let bits = 4096;
let private_key = match RsaPrivateKey::new(&mut rng, bits) {
Ok(key) => key,
Err(e) => {
eprintln!("Failed to generate a key: {:?}", e);
continue;
}
};
let public_key = RsaPublicKey::from(&private_key);
println!("Attempt {}: Key pair generated", attempt_count);
// 公開鍵をPEM形式に変換
let public_pem = match public_key.to_pkcs1_pem() {
Ok(pem) => pem,
Err(e) => {
eprintln!("Failed to convert public key to PEM: {:?}", e);
continue;
}
};
println!("Attempt {}: Public key PEM extracted", attempt_count);
// PEM形式の公開鍵にターゲットの文字列が含まれているかチェックする
if public_pem.contains(target_string) {
println!("Match found on attempt {}!", attempt_count);
println!("Generated RSA-4096 key pair where public key PEM contains the target string.");
// 鍵ペアを保存するかどうか対話式に
println!("Do you want to save the key pair? (yes/no)");
let mut input = String::new();
std::io::stdin().read_line(&mut input).expect("Failed to read line");
if input.trim().eq_ignore_ascii_case("yes") {
save_key_pair(&private_key, &public_key);
}
break;
} else {
println!("Attempt {}: No match found", attempt_count);
}
}
}
fn save_key_pair(private_key: &RsaPrivateKey, public_key: &RsaPublicKey) {
let private_pem = private_key.to_pkcs1_pem().expect("failed to convert private key to PEM");
let public_pem = public_key.to_pkcs1_pem().expect("failed to convert public key to PEM");
let mut private_file = File::create("private_key.pem").expect("failed to create private key file");
private_file.write_all(private_pem.as_bytes()).expect("failed to write private key");
let mut public_file = File::create("public_key.pem").expect("failed to create public key file");
public_file.write_all(public_pem.as_bytes()).expect("failed to write public key");
println!("Key pair saved to 'private_key.pem' and 'public_key.pem'");
}
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