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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25 views

bundling session information in a binary

We are in the process of developing a desktop app. When a user is logged into the website we create a dynamic binary(.exe) and add session information to that binary which is valid for one time login. ...
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1answer
19 views

What should I watch out for when using pam_ssh_agent_auth?

I got tired remembering passphrases for my SSH logins and heard about pam_ssh_agent_auth. Unfortunately I hadn't found any security audit of it and I don't know enough low-level details about SSH to ...
0
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0answers
10 views

Does PKCS 1.5 padding make it possible for an attacker to extract the private key or not? Is PKCS 1.5 safe to use in authentication context?

Im currently writing a authentication app based on RSA, for Android that should be impossible to copy, even if you have physical access to a phone without lockscreen/PIN. However, the HSM inside the ...
0
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0answers
29 views

Is any encyption used for EAP-TLS certificate exchange?

I was reading about the EAP-TLS and mutual client - server authentication using digital certificates. In the authentication process explained in RFC 5216, both server and client exchange ...
0
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1answer
41 views

How can I test my SSO connection without having access to the Identity Provider?

I'm trying to set up an SSO connection using Auth0. My app is set up as the Service Provider (SP), and it needs to work with PingFederate as the Identity Provider (IdP). I don't have access to an ...
1
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1answer
73 views

Is using dynamic obfuscation and peppers for password hashing a good idea?

I've read now the whole day about password hashing and secure authentication and though I read very often that mostly every own algorithm makes the proven hashing methods just less secure, I just got ...
-8
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1answer
176 views

Sign In vs Log In [closed]

Using Web apps, I started to believe that these are synonyms. But, suddenly, at the bottom, developing a web app, I received the following response from a Google server: {"google_logged_in":false,"...
6
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2answers
170 views

How does Google store passwords for remote IMAP/POP services?

It is possible to add non-Google accounts to Gmail and retrieve their mail messages via POP or IMAP. As part of the setup process, one has to provide the login username and password for these accounts....
3
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3answers
76 views

Additional confirmation for online bank payments

Nowadays, when someone is making an online payment, the associated bank often requires an authentication step. As far as I know, there are mainly two ways to do this: SMS Verification. The Bank ...
1
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1answer
88 views

Does SAML 2.0 define how to pass username and password for authentication?

I'm aware of how SAML is used for single sign on (SSO). That is, redirection to IDP from SP and getting the user's identity from the SAML response/assertion. My question is: Does SAML 2.0 ...
0
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0answers
15 views

Password Managers — Generating Passwords On The Fly a Safe Approach? [duplicate]

Most password managers store user credentials for individual services encrypted on their own back-end databases, so that your passwords are available on multiple devices. So, a DB compromise on these ...
1
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1answer
71 views

Pro's and Con's of current 2-step-verification processes?

I am currently working on a project, and we are exploring different types of current industry MFA standards. The most known ones would most likely be HOTP & TOTP pins, which are used in the '...
1
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3answers
260 views

why don't we store passwords in a database using encryption instead of hashing? [duplicate]

hashing is a one way method, if a user lost his password he will never be able to get that password from the server, so why don't we store passwords in a database using encryption instead of hashing?
2
votes
1answer
241 views

There might be a man in the middle attack against my server

I have a little $7.20/y VPS, and the fingerprint for the ECDSA key has changed three times on me. This time, it happened shortly after I reinstalled the server (same day, in fact.) I always disable ...
87
votes
12answers
12k views

Is a 6 digit numerical password secure enough for online banking?

My bank went through a major redesign of their customer online banking system recently. The way security is managed across the platform was also reviewed. The password I am able to set now to log in ...
1
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1answer
176 views

How Google Authenticator in Android mobile identifies this is the right SSH server?

I am new to Google Authenticator mechanism. I have gone through the basics of mechanism but I couldn't understood the logic behind it to make a connection to the Linux machine. I have a Linux machine ...
1
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1answer
107 views

Everykey (Bluetooth master key) - is it really secure? [closed]

Obligatory disclosure I have no relation to the Everykey company and do not mean to promote them in any way. I came across the product Everykey that claims to be "your only key" by allowing you to ...
0
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2answers
98 views

Smartphone 2FA has been broken?

This research states that two factor authentication has been broken by the possibility to remotely install an app on a device. I believe that an attacker can publish an app in the store that is ...
205
votes
17answers
18k views

Passwords being sent in clear text due to users' mistake in typing it in the username field

Upon reviewing the Logs generated by different SIEMs (Splunk, HP Logger Trial and the AlienVault platform’s SIEM) I noticed that for some reason quite a few users tend to make the mistake of typing ...
1
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1answer
36 views

Limiting access to data in a web application from IPs outside the network

My goal is to build a system (PHP + MySQL) where a user will have access to particular data only when logged in locally (from one of the office computers with a local IP), and to all the non-sensitive ...
3
votes
2answers
88 views

Sending non-expiring access token on each request vs using refresh tokens?

When securing REST APIs for mobile applications, what you often see is the use of refresh tokens. They exist because: Access Tokens have expiration date. We don't want the user to have to enter his ...
1
vote
1answer
35 views

How can I detect if IETF TokenBinding is in use for bearer tokens?

Token Binding increases the security of traditional bearer tokens (cookies). This Blog describes that ASP.NET can use Token Binding. As a security consultant, I'd like to observe or detect that this ...
1
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1answer
42 views

What data is sent between an NFC/BTLE FIDO U2F device and Chrome (or other agent)?

I need to explain what "conversation" occurs between a FIDO U2F device (YubiKey NEO) and the agent (Chrome). I want to know if it's a challenge response, and ultimately figure out how much ...
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votes
1answer
133 views

Why not just blacklist every IP except yours?

Inspired as a continuation of this question: Is it practical to pre-blacklist certain GeoIP regions? Why would it not make sense to blacklist every single IP address that shouldn't have access to a ...
0
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0answers
19 views

Is “full loop” and “half loop” authentication the right word to describe this 2FA sequence?

I'm looking for a term to describe this abstract thought about multifactor devices and how they are implemented. In the examples below, there are different levels of device authentication, but the ...
-2
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1answer
69 views

Best way to control who can run my application? [closed]

I am planning to make an application and I don't want everyone to use it (only allowed people). What I was going to do is getting the MAC address of the user and add it to our database "allowed_users" ...
1
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1answer
80 views

How important is a static IP address when authenticating with my server?

I am looking to move my business into a small office. I have found somewhere very suitable but unfortunately they cannot provide a static IP address. Currently, to connect to my server from home I ...
0
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0answers
28 views

From a credential flow perspective, whats the difference between FIDO UAF and FIDO 2.0 Web Services?

The FIDO Standard allows for devices and authentication schemes to be certified as UAF or U2F. This allows for flexible unified authentication, and optional second factor enrollment and registration. ...
0
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0answers
20 views

Key Distribution Center Key Protocol Analysis

http://i68.tinypic.com/fwu92v.png As shown in the image, why is Circle 1 to be B and Circle 2 to be A? Why is not the opposite, that is, Circle 1 to be A and Circle 2 to be B? like this picture ...
433
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22answers
92k views

How does changing your password every 90 days increase security?

Where I work I'm forced to change my password every 90 days. This security measure has been in place in many organizations for as long as I can remember. Is there a specific security vulnerability ...
3
votes
1answer
43 views

Relatively simple OTP code generated by SafeNet MobilePass

I noticed something peculiar while logging into the VPN of the company I work for. I generated a one-time passcode from MobilePass, and the code displayed was “010010”. I captured an image of this ...
0
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0answers
63 views

OWASP-ZAP and DVWA Login

I need to do a pentest of the DVWA application. To do that, I chose the OWASP-ZAP tool. I followed all the steps of this tutorial. But when I try to run the "spider" the program doesn't find all the ...
1
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1answer
53 views

How to secure android REST basic authentication credentials against reverse engineering?

As far as I know, in basic REST API authentication, username and password to access web service resources are baked into the app's code. On the other hand, it seems not difficult to reverse engineer ...
1
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0answers
60 views

Azure AD B2C vs Auth0

I am trying to work on security architecture for our SaaS application. The good finding was Azure AD B2C which is launched recently. And first comparison was with Auth0. Is this is correct comparison?...
0
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2answers
47 views

SSL protocol analysis

1) What is the use of Cert B in this protocol? 2) What does it prove to Alice? 3) Is it okay if we remove Cert B in this protocol? Even without Cert B, isn't the fact that Bob used his private key ...
1
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0answers
44 views

How can I authenticate securely to an internal website from an iPad without an strong password?

I would like to authenticate from an iPad to a website securely without using a strong password. I have though of these possibilities: Credentials stored in the iPad (like Gmail credentials). Using ...
-1
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0answers
65 views

HMAC Signature Based authentication for REST APIs

We are building publicly available RESTful APIs for eCommerce where clients can place logistics requests with us. We want stateless authentication on these APIs. While on-boarding, every client will ...
2
votes
1answer
53 views

Will the Credential Management API now available in Chrome 51 be widely adopted?

Google Chrome 51 stable includes support for the Credential Management API. This implementation is based on the W3C spec. Will other browsers support this technology (particularly Safari)? Will web ...
1
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0answers
32 views

Simulation vs Formal Analysis of Authentication Protocols

I received a review for my journal paper in which we proposed WOOlim or nspk kind of authentication protocols. We proved the strength of our protocol with rigorous formal methods using CSP and rank ...
15
votes
6answers
10k views

How to implement multi factor authentication using a token generator?

I'd like to implement multi factor authentication on a few projects. Now the first factor would be username and password, for the second factor I would like to use a token generator. These tokens ...
47
votes
10answers
5k views

Isn't OAuth, OpenID, Facebook Connect, and others crazy from a security standpoint?

I work with APIs all the time and I work with web developers who insist that OAuth, OpenID, etc are far superior than a home-brew method. Every site seems to be using these as well now for ease of use ...
1
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0answers
27 views

Dynamic Key Management in WPA through Radius server

Can anybody tell me in detail (or provide good links), how the dynamic key management is done by the authentication server in WPA? In other words, let's say I gave my credentials to the authentication ...
0
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0answers
32 views

Use MDC to provide origin authentication for public key encryption?

Why can't we use an manipultation detection code (MDC) to provide origin authentication when using public-key encryption?
0
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0answers
24 views

Providing identity verification via confirmed contact info to unconfirmed address w/o leaking information?

I emailed a known e-mail address for my local telecommunications/internet company about a complaint with their service. It appears the person I emailed forwarded this to somebody else in their office ...
3
votes
0answers
949 views

Social Login + OAuth2-secured REST API

I'm implementing social login with Facebook, Twitter and Google+ on our OAuth2-secured REST API (secured using spring-security-oauth). I'd like to make sure that the following flow is secure and that ...
1
vote
1answer
683 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 ...
0
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2answers
41 views

Is there any added security/vulnerabilities if you allow a “trusted-party” to vouch you are legit, if you were locked out of your account?

I was reading this answer on a question. http://security.stackexchange.com/a/498/106817 Recently, at the OWASP AppSec 2010 conference in Orange County, Bill Cheswick from AT&T talked at ...
1
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4answers
377 views

OAuth2 vs. JSON authentication

1) To what extent is OAuth2 more secure than JSON authentication (both over SSL)? The context is a client (one server) querying another server (via API) within a local network using RESTFul. Prior to ...
6
votes
4answers
342 views

Why is using SQL injection to extract passwords or password hashes from a login database (that should never legitimately disclose them) even possible?

(Okay, so I'll confess upfront that while I'm trying to educate myself the current state of my knowledge on web applications security is still pretty shallow. So I appreciate your patience if the way ...
2
votes
0answers
42 views

What is the current consensus on storage of primary credentials or long-lived cryptographic tokens?

The problem: some environments need to use plain text credentials or long-lived tokens in order to unlock a specific functionality. Examples include third party legacy services which need a login/...