Authentication - establishing the authenticity of a person or other entity. Not to be confused with authorization - defining access rights to resources.

learn more… | top users | synonyms (1)

1
vote
0answers
40 views

Is what flexi_auth does with its use of its $this->auth object good practice?

I am looking at the authentication library Flexi_auth for CodeIgniter. To use the library you have to create a object one time in the controller before the lib is used Like this: `$this->auth ...
8
votes
2answers
1k views

Role Based Authorization vs. Claim Based Authorization

What is the difference between "role based authorization" and "claim based authorization"? Under which circumstances would it be appropriate to implement each of these authorization models?
1
vote
4answers
168 views

How is “security word” safe from man in the middle attack?

In this bank site I read the following lines Item #2 - You will also need to create a "Security Word". This allows you to verify that you have reached our Internet Banking site, and not some other ...
1
vote
1answer
173 views

How does YubiKey protects it's secret key?

From what I understand, a YubiKey stores a secret key which can be used to generate passwords to enter a server. How does a YubiKey protect it's secret key? If it is plugged into an infected ...
-1
votes
2answers
67 views

user identity certificate

I want to create a new scheme for user identification, like X.509 certificates, but not X.509. Is it possible to use this new certificate over the existing Internet? and if yes, what are basic ...
1
vote
1answer
233 views

Google's Mobile Authentication for REST APIs

So I'm trying to create and secure a mobile REST API on an existing server that runs our web app. We're not going to open the API to the public and we will be writing the client app using ...
3
votes
0answers
410 views

MPPE-Send and Receive key derivation from MS-CHAPv2

I am trying to get the MS-MPPE-Send-key and MS-MPPE-Recv-key from the MS-CHAPv2 challenge material. I am able to follow the RFCs 2548 3078 and 3079 to the step of getting the GetNewKeyFromSHA() it is ...
5
votes
4answers
1k views

Password-free logins using your email address only?

The state of logins is horrendous. With each site having it's own rules for passwords, it can be very hard to remember what variation you used on any given site. Logins are pure pain. One thing I ...
1
vote
0answers
103 views

Implementing OAuth flow in JavaScript

I am making a custom auth flow for the application. It is inspired by OAuth 2.0. Dev sends user to an auth page on my domain, passing callback_url and api_id. I redirect user to callback_url, passing ...
0
votes
1answer
88 views

Can I use a CDN for static content without sacrificing SSL keys?

I would like to use a CDN for the static content of a website. But obviously I do not wish to share my SSL key with any external service. What are my options? An ideal solution would be to link to ...
0
votes
2answers
94 views

SSL/TLS Question [closed]

I am currently working on my SSL/TLS assignment and I got a question to ask. What is the use of a login password since it is not needed for establishing secret communication between your computer and ...
3
votes
1answer
301 views

OWASP Recommendation on Client-Side Password Hashing

The OWASP Application Security FAQ recommends the use of JavaScript to produce a salted hash of the password client-side with JavaScript prior to sending it to the server. Is this something truly ...
0
votes
2answers
121 views

how to store key securely [duplicate]

I will receive some secret key from server which I will use as an authentication key for a MAC function in the future. But my question is how do I store this key securely on my machine? Will I have to ...
4
votes
2answers
100 views

Is there a security advantage to requiring a user id instead of just /me in an api request?

Is there a security advantage to requiring a request to conform to /api/1234 instead of /api/me? Both would obviously have access tokens. My guess is that api/1234 is more secure because if someone ...
6
votes
4answers
313 views

Isn't OpenID over HTTP (not HTTPS) fatally flawed when delegates are used?

First, I have a private delegate set up on my web site for OpenID and pointed my SE account at the URL on my web site; SE has no knowledge of the actual OpenID provider endpoint until my delegate ...
2
votes
1answer
112 views

A problem with the cookie theft detection mechanism of Barry Jaspan's Improved Persistent Login Cookie scheme

I have read this article http://jaspan.com/improved_persistent_login_cookie_best_practice i intend to implement cookie theft detection mechanism Barry Jaspan devised in it. but a problem seemed to ...
2
votes
2answers
138 views

Authentication for external applications

I need to design an application for internal corporate use. The application must be hosted externally. Ideally I'd like that application to be able to authenticate and authorize against the corporate ...
1
vote
0answers
181 views

Safe communication via rest api between two known servers

i would like to have some advice on the following scenario: I'm using kinvey as backend but because it doesn't provide the ability to run custom code i have set up another server. So basically when x ...
5
votes
2answers
261 views

Can I trust large companies like Google not to store failed password attempts?

Let's say, for example, that I accidentally entered my Microsoft account password instead of my Google account password when logging in to some Google web service. After getting an error message, I ...
1
vote
2answers
238 views

What is it common to only say “username or password is incorrect” in case of login errors? [duplicate]

When logging in to a site with wrong user/password credentials, the displayed error is most generally a generic "username or password is incorrect". Looking into some PHP code that handles such login ...
2
votes
1answer
443 views

Android access tokens and access to all google services

My questions is based on the asnwer on that question: Can the Gmail password be recovered from the Android Gmail app? So, as I understand when we setup google account on Android devices, it stores ...
1
vote
1answer
557 views

How can a gmail recipient open email in two different countries, at the same time?

I sent an email to person in Russia, and tracked it with Right Inbox, when the email is opened I get notified. The problem is I get 2 different IP addresses, one in Russia, and one in the US, both ...
1
vote
3answers
189 views

Is there a law against one email containing both a login and a password?

I see most companies either supply a login or a password in an email, but never both in one email. Is this a "best practice" or is there an actual law that prevents legitimate companies from providing ...
4
votes
3answers
481 views

Web Certificate invalidation - You might be connecting to a website that is pretending to be [Site name]

Recently while trying to log-in to Facebook this notification starts to appear: At first I ignored it (by pressing Continue), but it started to popup every time I navigate through the website! I ...
20
votes
9answers
2k views

How can I ensure that I connect to the right wireless Access Point?

Under Windows/Linux, client side. How can I ensure that I'm not connecting to a rogue AP?
7
votes
3answers
1k views

Is HTTPS and Basic Authentication secure enough for banking webservices (RESTful)?

I have been reading about SSL/TLS for the last few days and looks like it has never been practically cracked. Given SSL/TLS is used for all communications between client application and the server, ...
7
votes
3answers
8k views

What is single sign on versus federated login?

What is the difference between Federated Login and Single Sign On authentication methods?
1
vote
3answers
161 views

How to figure out who is pummeling my WP install with bogus login attempts

I have a WordPress install which uses the plugin Wordfence. I set Wordfence to block the IP of anyone trying to log in with a non-existent username. For several months now, I have been getting many ...
1
vote
0answers
46 views

What's The Easiest Way To Maintain Remote Users Access to a Webapp

Here is a real world case: A chain of high schools (several hundreds) has many websites (~ 3x number of Schools) that are content driven by users (the students). Every school maintains about 2-4 ...
2
votes
3answers
137 views

Message authentication code based on a single AES block

I think I need to use a MAC for ensuring the integrity of a URL that my system will provide to an end user that will use it to download a content from another component of the system, i.e., an URL has ...
1
vote
0answers
113 views

Routing Protocol Encryption

As far as I know 'newer' versions of routing protocols support authentication between routers. What about encryption and integrity checks? Some implementations like this one from Cisco use MD5, which ...
1
vote
3answers
337 views

Can Paypal be used to verify a user's identity?

As I use my Paypal account for various online services, I noticed that vendors integrate differently with Paypal for on-demand payment, and scheduled payments. I also noticed that Paypal offers a ...
2
votes
5answers
664 views

Do any organizations use Smart Cards other than the military?

The military's Common Access Card (CAC) seems legit. Do other companies/organizations employ their use? If not, why? UPDATE What are the pros/cons of smart cards, compared to other methods?
1
vote
1answer
110 views

Is using an old Android phone for 2-factor authentication safe?

I apologize in advance if this is the wrong place to ask this, I didn't know a better place to start. I have a rooted HTC Hero (CDMA) that is no longer receiving service and is just kind of...sitting ...
1
vote
4answers
120 views

Are there any web services which use any other form of authentication, than passwords? [closed]

Out of curiosity and interest I was wondering if anyone had come across any web based services which offer users other forms of authentication, other than the standard password or PIN? Or if ...
4
votes
3answers
947 views

Safe to expose Active Directory via LDAPS externally?

We currently access Active Directory via LDAPS internally for authentication and user data retrieval. Is it common, or safe, to expose this publicly over LDAPs? Addendum 1: Our business case, ...
3
votes
1answer
432 views

What are the risks posed by “pass-through authentication” and how are they mitigated?

Related: Local Admin has Domain Admin rights "Pass-through authentication" on Windows systems allows for the possibility for user accounts with the same name and password to impersonate one ...
14
votes
3answers
5k views

Is the Facebook login form using SSL without https in the URL?

If I go to http://facebook.com, I am not redirected to https://www.facebook.com. If it doesn't have https in the URL, can the login be secure? Usually I am redirected to an https page on other sites? ...
1
vote
1answer
191 views

Local Admin has Domain Admin rights

While installing a new XP machine that had not been connected to the domain I was browsing to a UNC path and was not prompted for authentication. I then went to the different mapped drives and found ...
10
votes
4answers
3k views

Security measures against packet sniffing

I work in a environment where packet sniffing can be easily done . I was worried about my confidential data . Please suggest how is it done and precaution which i can take at client level.
5
votes
3answers
785 views

Is it possible to use a GPG or SSH key for web based authentication in a secure fashion?

Let's say hypothetically I am writing a web application targeting technically inclined, security-conscious users who have no problems generating and using GPG or SSH keys. Is it possible to use said ...
14
votes
6answers
6k views

Could SQRL really be as secure as they say?

I just came across https://www.grc.com/sqrl/sqrl.htm With Secure QR Login, your phone snaps the QR code displayed on a website's login page . . . . and YOU are securely logged in. This ...
1
vote
3answers
209 views

How safe is it to provide my administrator account password for a 3rd party software: EasyUS Todo Backup?

I've been recently searching for a backup solution for my Windows desktop. That's when I came across this free software called EasyUS Todo Backup. (I know it's a mouthful but English doesn't seem to ...
9
votes
7answers
3k views

Two-Step vs. Two-Factor Authentication - Is there a difference?

These days, there's pretty much three forms of authentication in general use on the web: Single-factor authentication, e.g.: PIN or password. Two-factor authentication, e.g.: Single-factor plus a ...
17
votes
3answers
34k views

What is the difference between authorized_key and known_host file for SSH?

I am learning basics of SSH protocol. I am confused between the contents of the following 2 files: ~/.ssh/authorized_keys: Holds a list of authorized public keys for servers. When the client ...
15
votes
4answers
5k views

Google Account: implications of using application-specific passwords

In the wake of the recent Mat Honan story I decided to try out two-factor authentication on my Google account. But in order to keep using it with Exchange, the Android OS, Google Talk and Google ...
4
votes
1answer
166 views

Oauth Consumer Secret?

Using OAuth you have a consumer key and consumer secret to identify your application and the user provides an OAuth access token and secret to authenticate your application access to their account, ...
1
vote
1answer
349 views

Additional security for WebRTC/DTLS-SRTP with PGP?

I am having a thought experiment. Can you help me? Two clients who both use PGP. They initiate a WebRTC call using DTLS-SRTP via a 3rd party server. Is there any benefit of encrypting, via their ...
7
votes
3answers
2k views

How secure is Android's facial recognition?

Android supports using facial recognition for unlocking your phone. How secure is that mechanism? For instance, if someone has a good quality picture of your face, can they defeat the facial ...
1
vote
2answers
135 views

Does this show the need for a two-factor authentication?

I need some help for my understanding while reading through this authentication scheme in WEP. In a WEP authentication scheme, the station first sends a request for authentication. However, this ...