In connection with the preceding article Concerning the importance of strong passwords and 2-factor authentications we felt the need to dig a bit deeper into the subject of OTP One Time Passwords, and write about time based one-time password and HMAC based one-time password HOTP algorithms. As we explained previously, during 2-factor authentications there are two tokens to be supplied: one we are familiar with is your username and the password, whereas another one is a key token which isn’t known to the general public. In regards to the 2nd factor of authentication mechanisms, usually OTP is used as a protective mechanism.OTP or one-time passwords are what They state: a password, valid for just 1 time. This implies OTP is safer than a normal password since it keeps changing itself, which makes it more challenging to hack them in replay attacks. Since OTP is used only once, there isn’t any need to memorize it. Acquiring it has two chief ways: in the kind of hardware and software tokens.

With hardware components, the device That creates the otp service is plugged into a USB port and it will type in the token for you. Software tokens show the OTP someplace for you e.g. On the display of your cell phone and you can put it in from there.OTPs have two main criteria for Generating treetop and HOTP algorithms. HOTP algorithm relies on two facets: a shared key, and a counter a moving variable. When it is in use, a hash-based message authentication code of the moving factor is going to be generated by using the shared key. Every time a new OTP is generated the moving variable will be incremented, meaning that the generated passwords will be different every time.TOTP algorithms operate similarly, relying on a shared key and a moving variable, but it is a small difference in how it handles the moving factor. With TOTP the moving variable changes depending on the time that has passed since a time. While HOTP passwords can be valid for an infinite quantity of time, TOTP passwords are restricted to a brief window, and they keep on changing.

This means that through 2-factor authentication the user types in the code e.g. Username and password that begins requesting the 2nd, secret token. The server verifies whether its generated code matches the one which is sent to the consumer, and if it is legitimate the authentication is complete.TOTP and HOTP are two helpful way to perform 2-factor authentications. They are based on open standards, and the calculations which are required are done entirely in a software, not needing any other security methods. Implementing those methods in online data storing means a secure and reliable way to make it to the files both safe and easily.I’m sure all people have Seasoned TOTP or HOTP based authentications before.