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Password generator: Difference between revisions
Add Rust implementation
SqrtNegInf (talk | contribs) m (→{{header|Perl}}: modernize code) |
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#9 9P8Qx_P
#10 f0Qho:5</pre>
=={{header|Rust}}==
<lang rust>
use rand::distributions::Alphanumeric;
use rand::prelude::IteratorRandom;
use rand::{thread_rng, Rng};
use std::iter;
use std::process;
use structopt::StructOpt;
const OTHER_VALUES: &str = "!\"#$%&'()*+,-./:;<=>?@[]^_{|}~";
// the core logic that creates our password
fn generate_password(length: u8) -> String {
// cache thread_rng for better performance
let mut rng = thread_rng();
// the Alphanumeric struct provides 3/4
// of the characters for passwords
// so we can sample from it
let mut base_password: Vec<char> = iter::repeat(())
.map(|()| rng.sample(Alphanumeric))
.take(length as usize)
.collect();
let mut end_range = 10;
// if the user supplies a password length less than 10
// we need to adjust the random sample range
if length < end_range {
end_range = length;
}
// create a random count of how many other characters to add
let mut to_add = rng.gen_range(1, end_range as usize);
loop {
// create an iterator of required other characters
let special = OTHER_VALUES.chars().choose(&mut rng).unwrap();
to_add -= 1;
base_password[to_add] = special;
if to_add == 0 {
break;
}
}
base_password.iter().collect()
}
#[derive(StructOpt, Debug)]
#[structopt(name = "password-generator", about = "A simple password generator.")]
struct Opt {
// make it SECURE by default
// https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html
/// The password length
#[structopt(default_value = "160")]
length: u8,
/// How many passwords to generate
#[structopt(default_value = "1")]
count: u8,
}
fn main() {
// instantiate the options and use them as
// arguments to our password generator
let opt = Opt::from_args();
const MINIMUM_LENGTH: u8 = 30;
if opt.length < MINIMUM_LENGTH {
eprintln!(
"Please provide a password length greater than or equal to {}",
MINIMUM_LENGTH
);
process::exit(1);
}
for index in 0..opt.count {
let password = generate_password(opt.length);
// do not print a newline after the last password
match index + 1 == opt.count {
true => print!("{}", password),
_ => println!("{}", password),
};
}
}
</lang>
{{out}}
<pre>
password-generator 30 5
%"/[:*|}zYNaC2C7IRsAXK8zDZR8JC
)fJGVcMqBLQkU5x2YOpo6Oyw0ezWHh
%/@&@2BBOQBLnH74lsqtj92eWZRQzc
|:%!r77MTosArmxe9J3LvKurcdOX3P
(=>#[!%|z84tH5edhGY48hoylopnIA
</pre>
=={{header|Scala}}==
| |||