Package dev.vink.jtotp

Class TOTPGenerator

java.lang.Object

dev.vink.jtotp.TOTPGenerator

public class TOTPGenerator
extends Object

Class for generating Time-based One-Time Passwords (TOTP) using HMAC values.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	TOTPGenerator.Builder	Builder class for constructing instances of TOTPGenerator.

Method Summary

Modifier and Type	Method	Description
String	generateWithDrift(int drift)	Generates a TOTP with a custom drift in time steps.
String	generateWithTime(long time)	Generates a TOTP for a specific time.
String	next()	Generates the TOTP for the next time step.
String	now()	Generates the current TOTP based on the current time.
String	previous()	Generates the TOTP for the previous time step.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

now

public String now()

Generates the current TOTP based on the current time.

Returns:

The current TOTP as a string.

previous

public String previous()

Generates the TOTP for the previous time step.

Returns:

The previous TOTP as a string.

next

public String next()

Generates the TOTP for the next time step.

Returns:

The next TOTP as a string.

generateWithDrift

public String generateWithDrift(int drift)

Generates a TOTP with a custom drift in time steps.

Parameters:

drift - The number of time steps to drift (positive or negative).

Returns:

The TOTP with the specified drift as a string.

generateWithTime

public String generateWithTime(long time)

Generates a TOTP for a specific time.

Parameters:

time - The time in seconds since the Unix epoch.

Returns:

The TOTP for the specified time as a string.