otp-rs

RFC-complaint one-time password algorithms written in Rust.

The HMAC-based one-time password algorithm is implemented as per RFC4226. The time-based one-time password algorithm is implemented as per RFC 6238.

Installation

[dependencies]
otp-rs= "0.1"

HOTP Example

  let otp = HOTP::new("secret");
  /// Generate code with counter 0 input
  let code = otp.generate(0).unwrap();

  println!("{}", code);

TOTP Example

let otp = TOTP::new("secret");
/// Generate code with period and current timestamp
 let timestamp = SystemTime::now()
    .duration_since(UNIX_EPOCH)
    .unwrap()
    .as_secs();
  let code = otp.generate(30, timestamp);
  println!("{}", code);