Function totp_lite::totp

pub fn totp<H>(secret: &[u8], time: u64) -> Stringwhere
    H: Update + FixedOutput + CoreProxy,
    H::Core: HashMarker + UpdateCore + FixedOutputCore + BufferKindUser<BufferKind = Eager> + Default + Clone,
    <H::Core as BlockSizeUser>::BlockSize: IsLess<U256>,
    Le<<H::Core as BlockSizeUser>::BlockSize, U256>: NonZero,

Produce a Time-based One-time Password with default settings.

use std::time::{SystemTime, UNIX_EPOCH};
use totp_lite::{totp, Sha512};

// Negotiated between you and the authenticating service.
let password: &[u8] = b"secret";

// The number of seconds since the Unix Epoch.
let seconds: u64 = SystemTime::now().duration_since(UNIX_EPOCH).unwrap().as_secs();

// Specify the desired Hash algorithm via a type parameter.
// `Sha1` and `Sha256` are also available.
let result: String = totp::<Sha512>(password, seconds);
assert_eq!(8, result.len());
assert_eq!("71788658", totp::<Sha512>(password, 1234567890)); // 2009 February 13.