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

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3
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2answers
116 views

How to troubleshoot “client certificate” related errors in 2 way HTTPS

I have a webserver which is asking for client certificate for mutual authentication. I have what I think is the right certificate loaded into my client browser. However, the browser is not able to ...
1
vote
1answer
240 views

why gmail's phone verification code not encrypted

while using google's phone verification code system, i have noticed that google phone verification code is always 6 digits cant it be brute forced for randomly generating the 6 digits?is it there any ...
-1
votes
1answer
73 views

How does SSL client authentication work?

I read the RFC document, it mentioned that there are some kinds of client certificate type. So I don't understand what does this type mean. For a instance, one type named rsa_fixed_ecdh, it said, the ...
0
votes
1answer
77 views

USB Token Authentication Security Issues

First of all, I should mention that I read this thread and it was useful in my case, but I need more comments and reviews about this authentication method.USB Token authentication which I want to talk ...
2
votes
4answers
270 views

Why self-signed https is less trustworthy than unencrypted http?

It wouldn't be far-fetched to guesstimate that at least 50% of the web traffic can be intercepted in 2014. However, a guesstimate of active interception attacks is likely an order of magnitude ...
5
votes
2answers
1k views

Do Client Nonces enhance the security of HTTP Digest Auth?

As far as I understand the answer at http://security.stackexchange.com/a/3024/13447, client nonces are meant to prevent attackers from amortizing the costs of brute-force hash computations by being ...
1
vote
1answer
95 views

Use TLS certificate as both server and client?

For a federated server-to-server protocol with domain-based identities, I am thinking of using TLS client certificates as authentication mechanism. I figured that re-using each peer's TLS server ...
11
votes
4answers
466 views

How to protect against login CSRF?

http://seclab.stanford.edu/websec/csrf/csrf.pdf points out that most CSRF protection mechanisms fail to protect login forms. As http://stackoverflow.com/a/15350123/14731 explains: The ...
10
votes
4answers
2k views

Authenticating without a database

I've been inspired by a question over on Code Review, which boils down to: What is the proper way to authenticate a user without a database? Would it be the exact same process if you stored ...
0
votes
2answers
72 views

How does HTTP Basic Auth persist across pageviews?

I am familiar with the basic workings of HTTP Auth, but how does it keep track of authentication between page views? I see there is no cookie created when the initial authentication takes place.
6
votes
4answers
1k views

Is 'Bring your own Identity' as the only authentication option a valid practice?

This question is mainly aimed at OpenID Connect, when it is fully realized. I understand the aversion to signing in with a social networking site, but from what I understand about OIDC, its supposed ...
20
votes
5answers
3k views

Password strength and banks 4 pin code?

Why is it that some security advisers recommend using an 8 character password with upper, lower, digits, and symbols while banks only use a 4 digit number pin for debit and 3 digit pin for credit ...
20
votes
5answers
2k views

Are login “certificates” more secure than standard username + password authentication?

I just opened a new bank account which comes with internet banking. Unlike the others I have used so far, this one requires a personal certificate (a .p12 file stored on my computer) + password for ...
0
votes
0answers
59 views

Authentication for an enterprise application via a reverse proxy in the cloud

I am trying to understand conventional deployments for users accessing HTTP enterprise app from the internet detail: Let's say we have a HTTP reverse proxy in the cloud (amazon) and an enterprise ...
1
vote
0answers
46 views

How to add user entries with password field in LDAP over HTTPS

I am new to this kind of stuff (HTTPS etc.) and pretty much confused on how to go ahead with this. An LDAP server (ApacheDS) at the back-end stores the user details. To add new users, the user ...
0
votes
3answers
56 views

How to secure Password and Salt on a deployed application

I have a question regarding one step of protection more than salt/hash. I work on an application that is distributed to many clients and then deployed on their networks. If I set a password on one ...
15
votes
4answers
253 views

Are malicious relying parties able to abuse OpenID logins?

if I logon with OpenID into a website (crafted by attackers/hackers) I want to know how much damage can they do to me? Are they able to steal my contact info, name, etc (assuming I'm using Gmail ...
0
votes
1answer
36 views

How to sync with multiple authentication services?

I have a peculiar case to work on. We are using a proprietary product which supports LDAP integration. However, it can be configured to use only one LDAP service. (most of the products are shipped ...
1
vote
2answers
141 views

VPN over HTTPs for a web service only

I have a web service (PHP & MySQL on Ubuntu 12.04) running in a corporate intranet. I have also connected it to internet through a firewall letting incoming connections on HTTPs only (port 443). ...
0
votes
1answer
64 views

Mobile authentication

I'm currently working on an Android app in which I want to authenticate someone against an REST API. I want to do this as secure as is (cost-)effective/possible/userfriendly. I've been looking around ...
7
votes
1answer
283 views

How to stop password recovery attempts on accounts?

I am using social networking services such as My Banking GMail PayPal Facebook Twitter Google+ LinkedIn All of these services text messages me a six digit code to login from anywhere, even a ...
0
votes
1answer
93 views

SSL Mutual authentication Fails

When I try to establish a Mutual authentication between server and client, I am getting the errors below. The timing between the server and client is exactly same and also the certs are proper in ...
2
votes
1answer
88 views

Where do browsers store HTTP Authentication details

Where do browsers store HTTP Authentication credentials ? If I gain access to a browser, is there some place I can look where all HTTP Authentication details would be available? In most browsers, even ...
-4
votes
3answers
255 views

Two-factor authentication Without Mobile Phone

Two-factor authentication is based on the notion of “something you know” and “something you have”. Is it absolutely necessary for having your mobile phone involved in two-factor authentication, which ...
3
votes
1answer
94 views

What stops an attacker from tampering with data sent during the SSL/TLS handshake?

On this page, it says the first thing sent is the SSL settings, such as version, and cipher settings. If the attacker, say, wanted to change the encryption method used, what makes this not possible?
1
vote
2answers
78 views

In two step authentication, should I check step 1 before proceeding to step 2 or check both at the end?

I asked this question first on Stack Overflow but it was suggested that Information Security would be a better place for it (pretty obvious in hindsight). ...
1
vote
3answers
88 views

HTTP authentication: identify the client

We have a web-site, where each user has to log-in to access a private area. Inside the private area, there are some information about the user, a profile, including some sensitive information (home ...
0
votes
4answers
581 views

Wifi deauth attack - Difference between Aireplay and MDK3

I am currently working on some Wifi related security issues, and something appeared to me. I have an Open Wifi network, to which a client connects. I try the Deauth attack from Aireplay ...
5
votes
3answers
183 views

Separation of secure login steps

I'm redesigning a login screen for a financial services application. Currently, this requests user ID and password, then (on the same screen) 2 digits from a 6-digit PIN are requested - these 2 digits ...
-1
votes
1answer
22 views

Symmetric Mutual Authentication Case

I have an interesting question about mutual-authentication with a symmetric key. Is this scheme possible and secure? And is this scheme a mutual-authentication scheme? Alice -------"Im ...
10
votes
3answers
948 views

What is the risk and mitigation of accidentally typing a YubiKey password in an open forum?

I have a YubiKey in my laptop (for testing) and accidentally broadcast my YubiKey password out to the Internet. Since this is only a test key, and has no access to anything of value, here are some ...
0
votes
1answer
120 views

Is this email being sent directly to sender?

I am receiving odd emails from a health insurance plan contact. Is this going to an alternate address first? From Kelly Trace Tue Jun 17 05:44:13 2014 X-YMail-OSG: ...
6
votes
4answers
408 views

Is it secure to use *no authentication* for services listening only on localhost?

I have many applications installed on my server that use a webui frontend to control the application. Since I am the only user of the server, I usually bind these applications to 127.0.0.1. As the ...
1
vote
0answers
43 views

Security for message queue in ActiveMQ

I am using ActiveMQ and WSO2 for my application. I need to protect my queue to restrict posting of messages by anonymous users(I need to protect my queue with some password). I know, there is a ...
1
vote
1answer
303 views

Bypassing CVE-2010-4478 (J-PAKE parameter validation) in OpenSSH 5.1

Did anyone successfully exploit CVE-2010-4478 in the past? This is insufficient validation of the J-PAKE public key parameters in OpenSSH up to 5.6. I'm dealing with a vulnerable machine running ...
20
votes
6answers
2k views

Web authentication - password vs key file

There is a corporate web mail site (PHP + MySQL) for limited numbers of users who are employees of a company working remotely with the corporate web portal. Each user has a login and password. I'm ...
3
votes
2answers
66 views

Is an emailed PIN for 2FA worthwhile?

To log in to our web app, our security team is insisting on 2FA as it is hosted on our internal network. The proposed solution is to have a standard username (email address) and password login, which ...
0
votes
2answers
63 views

Best practice for two WebServices that have to authenticate with each other [closed]

I have two WebServices that are hosted by two different applications. Both Applications access each other's webservices: Now both WebServices have to authenticate with each other. Different ...
1
vote
1answer
468 views

Transparently authenticating users or devices on mobile devices

I have an interest in using EAP-TLS to authenticate both users and devices separately on mobile devices (phones, iPods, tablets, etc.). My issue is how to delineate between user authentication and ...
1
vote
1answer
72 views

Secure way of opening web page from iOS without need of logging in

I am developing an iOS application and web page, both use same Parse backend. Web page contains some functionality that is not available in the iOS application. Therefore I would like to present the ...
3
votes
3answers
87 views

Is login limiting still needed if we employ multi-factor authentication?

The status quo is that most online websites limit login attempts per IP address, or even per account since some attackers possess huge amounts of IP addresses. OWASP declares: When multi-factor ...
1
vote
1answer
96 views

Implementing password-reset in a web application by authtoken over email

I think I have a basic understanding of security concerns, but I feel like if I don't know everything, I'm going to implement lousy solutions. Below is my current strategy; Have I overlooked obvious ...
1
vote
1answer
127 views

How could the Skype app log me out from my Facebook account on OSX? Isn't this a huge security flaw?

According to this post (and to my personal experience), installing the Skype app on Facebook and the Skype client on OSX Mavericks will result in you being logged out from Facebook every time you ...
0
votes
1answer
74 views

ChangeCipherSpec Authentication

According to RFC 5246, 7.1. Change Cipher Spec Protocol: The ChangeCipherSpec message is sent during the handshake after the security parameters have been agreed upon, but before the verifying ...
-1
votes
1answer
39 views

What are relation between security services? [closed]

message confidentiality message integrity message authentication non-repudiation The 4 services are related in the sense that one services often implies/provides another. Indicate for each service ...
0
votes
0answers
72 views

CAS protection against CSRF attacks

A website based on Apache Struts uses central authentication service (cas) for login. I'd like to know if additional csrf protection needs to be provided with Struts in case cas doesn't provide that. ...
5
votes
1answer
555 views

A Secure Cookie Protocol

As title says I'm trying to implement a secure cookie protocol HMAC(username|expiration name|data|session key, sk) It seams that session key is not constant during whole application session ...
9
votes
3answers
931 views

HMAC Based Request Signing - Storing the Salt

I'm working on a (non high security) project that currently isn't live but might go live at some point. We have a REST API (implemented using Restlet and Neo4j) running on a server and an Android ...
2
votes
3answers
715 views

Website login protection with chrome extension

Right so I'm developing very private systems recently, and I'm looking into admin login protection. I'm a PHP dev with essential knowledge of js/jq. While I handled most of the stuff so far, I'm ...
1
vote
2answers
642 views

Implementing SRP Challenge login system *with SSL* (Using PHP)

My question: Anyone knows how to implement SRP / Diffie-Hellman authentication in PHP (or if this has already been done)? (Some details) I'm using CodeIgniter with TankAuth (both latest version) ...