rust-otp is a Rust library for performing the HMAC-based One-time Passsword Algorithm as per RFC 4226 and the Time-based One-time Password Algorithm as per RFC 6238. These are also the algorithms many mobile-based 2FA apps, such as Google Authenticator and Authy, use to generate 2FA codes.
Just add the library as a dependency by adding the following section to your
[dependencies.otp] git = "https://github.com/TimDumol/rust-otp"
// first argument is the secret, second argument is the counter assert_eq!(make_hotp("base32secret3232".to_ascii(), 0), Some(260182)); // first argument is the secret, followed by the time step in seconds (Google // Authenticator uses a time step of 30), and then the skew in seconds // (often used when calculating HOTPs for a sequence of consecutive // time intervals, to deal with potential latency and desynchronization). assert_eq!(make_totp("base32secret3232".to_ascii(), 30, 0), Some(260182)); // true on Unix epoch
rust-otp is licensed under the MIT license.
The full license is included in this repository in