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terminal.rs
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terminal.rs
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use openssl::rsa::{Padding, Rsa};
use openssl::pkey::Private;
use openssl::hash::{hash_xof, MessageDigest};
use crate::{device::Device, consts::Consts};
pub struct Terminal {
device: Device,
privkey: Rsa<Private>,
}
impl Terminal {
pub fn generate(name: String) -> Terminal {
let key_pair = Rsa::generate(Consts::RSA_LENGTH).unwrap();
let pubkey = Rsa::public_key_from_der(&key_pair.public_key_to_der().unwrap()).unwrap();
let privkey = key_pair;
let device = Device::new(name, pubkey);
Terminal { device: device, privkey: privkey }
}
pub fn key_bits(&self) -> u32 {
Consts::RSA_LENGTH
}
pub fn get_device(&self) -> &Device {
&self.device
}
pub fn export_public_key(&self) -> Vec<u8> {
self.privkey.public_key_to_der().unwrap()
}
pub fn export_private_key(&self) -> Vec<u8> {
self.privkey.private_key_to_der().unwrap()
}
pub fn encrypt_key(&self, key: &Vec<u8>) -> Vec<u8> {
if key.len() != Consts::AES_KEY_SIZE {
panic!("Incorrenct chacha20-ietf-poly1305 key size")
}
let mut buf = vec![0; self.privkey.size() as usize];
self.privkey.private_encrypt(&key, &mut buf, Padding::PKCS1).unwrap();
buf
}
pub fn sign(&self, msg: &Vec<u8>) -> Vec<u8> {
let mut hashed = vec![0; self.privkey.size() as usize];
hash_xof(MessageDigest::shake_256(), msg, hashed.as_mut_slice()).unwrap();
let mut signed = vec![0; self.privkey.size() as usize];
self.privkey.private_encrypt(&hashed, &mut signed, Padding::NONE).unwrap();
signed
}
}