Rust encrypt with RSA public key

We use cargo to build this example.

Require modules:

rsa = "0.5.0"

rand = "0.8.4"

My code to show, How to encrypt, decrypt with RSA

//src/cargo.toml

[package]

name = "algorithm"

version = "0.1.0"

edition = "2021"

[dependencies]

rsa = "0.5.0"

rand = "0.8.4"

//src/main.rs

use rand::rngs::OsRng;

use rsa::{PaddingScheme, PublicKey, RsaPrivateKey, RsaPublicKey};

pub fn main() {

let mut rng = OsRng;

let bits = 512;

let private_key = RsaPrivateKey::new(&mut rng, bits)         .expect("failed to generate a key");

let public_key = RsaPublicKey::from(&private_key);

// Encrypt

let plain_text = b"Hello world!";

let cipher_text = public_key

.encrypt(

&mut rng,

PaddingScheme::new_pkcs1v15_encrypt(),

&plain_text[..],

)

.expect("failed to encrypt");

println!("Cipher Text: {:?}", cipher_text);

// Decrypt

let decrypted_text = private_key

.decrypt(             PaddingScheme::new_pkcs1v15_encrypt(),             &cipher_text)

.expect("failed to decrypt");

println!(         "Plain text: {}",         String::from_utf8_lossy(&decrypted_text)         );

}

Thanks.