one-time-password Questions
2
Solved
Every TOTP implementation (even FreeOTP by RedHat) I find uses Base32 encoding/decoding for its generated secret.
Why is Base64 not used, since Base32 uses roughly 20 % more space and its main adva...
Gloaming asked 28/4, 2018 at 23:50
0
My textfield read the OTP code from sms message,
if the user press on from message the other textfields work fine, but if the user not use it, the OTP message still appears as suggestion to fill ot...
Cheap asked 16/5, 2019 at 23:18
4
I'm in the process of rolling my own JWT token auth, however, I would really like it to be a one time-token – so once it's used, the server generates a new token and the client will have to use tha...
Lambaste asked 1/5, 2017 at 13:9
2
Solved
While registering from my app I was sending OTP to the registered mobile number I want to retrieve that OTP in my app without opening SMS app...When the user received OTP message I need to display ...
Jaguarundi asked 2/11, 2015 at 7:47
1
Solved
I'm using Pyotp for generating OTP. Default expiry of this token is 30sec. How can I change the default expiry to some 60 seconds?
This is the simple code I'm using.
secret = pyotp.random_base32()...
Inwardly asked 2/7, 2018 at 10:21
2
Solved
In Google Authenticator app you can either scan a QR code or manually type a key provided by the issuer.
In the following screenshot you can see the setup of 2FA among Google Security settings, di...
Exert asked 13/11, 2017 at 15:15
0
I'm currently building a personal website in Yesod 1.4.5, and at the moment I'm implementing authentication. Authenticating with a username and password was easy enough - I used Yesod.Auth.HashDB -...
Misguidance asked 6/10, 2017 at 4:53
3
Solved
I want to implement OTP functionality in my android application.
In this application, after signup user will receive one time password key. After verifying OTP, user will be able to register/open a...
Bascio asked 14/3, 2014 at 8:59
4
Solved
I am doing a project of using OTP for the login of the websites, I have created a button named "Generate" once clicked it will create an OTP and send an SMS via HTTP gateway, then it stores the pas...
Denudate asked 12/3, 2014 at 13:4
1
Solved
I have seen this link Two Factor Auth using goolgle authenticator on how to create a two factor authentication in web api, but my requirements are little different.
I want to use two factor auth...
Globefish asked 10/4, 2017 at 7:45
2
Solved
I am currently trying to recreate a Google One Time Password generator. I use a shared secret generated when I setup Google Authenticator.
I tried looking into the Google Authenticator sources and ...
Most asked 1/11, 2016 at 21:12
2
Solved
I tried to copy the HOTPAlgorithm.java codes (HOTPAlgorithm.java) and compared it against the official HOTP RFC 4226's sample implementation (RFC4226 Page 27) found on Page 27 of the official RFC42...
Lenny asked 22/5, 2015 at 8:35
1
Solved
Background
I'm currently working on a two-factor authentication system where user are able to authenticate using their smartphone. Before the user can make use of their device they need to verify...
Rutherfordium asked 30/11, 2015 at 15:1
1
Solved
With OtpKeyProv-Plugin it is possible to lock the database with HOTP-passwords. I'm searching for possibility to lock my database with time-based passwords. It would allow to generate the keys on m...
Charlie asked 19/8, 2014 at 7:7
1
Solved
Recently, my bank sent me this tiny device that generates a unique code that must be used when performing online transactions, all the device does is generate this unique code when I press a ...
Reptile asked 11/8, 2014 at 17:26
2
We've had to code an OTP based authentication. I have seen some apps, like my bank's app, which when it sends the OTP also then immediately does a quick popup of the SMS that has just arrived, so I...
Dressmaker asked 30/7, 2014 at 10:14
3
Solved
I am working on an internet trading application with its mobile and iPhone applications available. With the recent market trend, we are working on including two-factor authentication. For tha...
Lump asked 3/1, 2014 at 10:46
2
Solved
I have a web application, and am tasked with adding secure sign-on to bolster security, akin to what Google has added to Google accounts.
Use Case
Essentially, when a user logs in, we want to de...
Shurwood asked 12/6, 2012 at 3:59
3
Solved
I am attempting to wrap my brain around generating a 6 digit/character non case sensitive expiring one-time password.
My source is https://www.rfc-editor.org/rfc/rfc4226#section-5
First the definit...
Mcmillian asked 29/11, 2010 at 20:53
3
Solved
Overview
I'm trying to come up with a way for a server and client to be able to generate a unique IV for each request that is both different for every client and yet deterministic. What I mean by ...
Paraboloid asked 12/7, 2011 at 23:46
3
Solved
I need to create a one-time pad to encrypt some data (a few KBs in size). How should I go about generating this one-time pad to avoid all of the pseudo-random problems associated with basic random ...
Eo asked 12/1, 2011 at 18:14
4
I'm doing a module which allow users to reset password. I noticed how most websites they provide a confirmation link which contain query string that has a unique hash.
My question is: How can I ge...
Nonna asked 24/8, 2010 at 15:47
5
Solved
I'm trying to write an encrpytion using the OTP method. In keeping with the security theories I need the plain text documents to be stored only in memory and never ever written to a physical drive....
Lynnell asked 15/2, 2009 at 21:8
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