idsmith 0.5.4

Validate and generate checksum-correct IBANs, personal IDs, bank accounts, credit cards, SWIFT/BIC, company IDs, driver's licenses, tax IDs, and passports.
Documentation 
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use rand::Rng;

pub fn generate(rng: &mut rand::rngs::ThreadRng) -> String {
    let mut s = String::from("P");
    for _ in 0..9 {
        s.push((b'0' + rng.gen_range(0..=9u8)) as char);
    }
    s.push((b'A' + rng.gen_range(0..26)) as char);
    s
}

pub fn validate(code: &str) -> bool {
    let clean = code.to_uppercase().replace([' ', '-'], "");
    if clean.len() != 11 {
        return false;
    }
    let first = clean.chars().next().unwrap();
    let last = clean.chars().last().unwrap();
    (first == 'A' || first == 'P')
        && clean[1..10].chars().all(|c| c.is_ascii_digit())
        && last.is_ascii_alphabetic()
}