a method for constructing a message authentication code based on a cryptographic hash function.

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4
votes
1answer
46 views

Why does node.js scrypt function use HMAC this way?

According to the documentation, the scrypt hash function works like so: The hash function does the following: Adds random salt. Creates a HMAC to protect against active attack. Uses ...
1
vote
1answer
370 views

What is a AUTH-KEY in the security of the computers?

I'm studying security in computers and in particular the URL Spoofing. I understand that a form of URL spoofing is phishing. Then I read that a countermeasure against phishing is the authentication ...
6
votes
0answers
858 views

FIDO, U2F Compatibility

I've been following the FIDO standard (a consumer-friendly public-key system similar to SSH key pairs) and it appears that it's close to being complete: both Google and PayPal have been testing it ...
3
votes
0answers
225 views

Using HMAC to generate secret keys

I am developing a platform that uses several secret keys for several usages: key1 for hashing passwords (using pbkdf2-hmac-sha256), key2 to generate non-repeating unpredictable uuids (using aes-128 ...
2
votes
0answers
51 views

Securing a JavaScript app with RESTful backend

I went through the question Securing a JavaScript Single Page App with RESTful backend that has discussions / options around securing a Javascript client side app that invokes RESTful APIs. However, ...
1
vote
0answers
12 views

API Keys for REST

So I'm developing a RESTful API, but I can't for the life of me understand how API keys work. I'm using PHP, which has an HMAC function, which I've read is a good way to sign requests, but what I ...
1
vote
0answers
36 views

HMAC authenticated API calls with multipart/form-data file uploads

We have an existing API where 3rd parties can push data. The API calls are authenticated with HMAC using the same scheme as described in Ruby's ApiAuth library which I use to verify signed requests. ...
1
vote
0answers
92 views

Allowing third-party clients to authenticate with an app server

I'm working on an app that is planned to be licensed to OEMs, who would in turn offer it as a service to their users.  We would host the app server and the OEM would optionally host the app's web ...
1
vote
0answers
155 views

Login Authentication with SSL and HMAC

My question is pretty similar to : http://stackoverflow.com/questions/5487757/using-hmac-sha1-for-api-authentication-how-to-store-the-client-password-secure. Basically, I want to write an API for my ...
1
vote
0answers
159 views

Gladman's file encryption library = AES in counter mode with HMAC-SHA1 authentication?

I would like to use Gladman's algorithm to create AES encrypted data in JavaScript. I use the Crypto-JS library, but its performance is horrible. PBKDF2 is terribly slow, so I switched to another ...
1
vote
0answers
160 views

Is hashing the HMAC secret key a good idea?

I'm implementing a REST API and I've generated 128-bit random API keys which are used with HMAC-SHA1 for authorization. Should I hash the secret key on both the client and server before using it, ...
1
vote
0answers
1k views

Want to implement a really good authentication mechanism for REST API

I own a web application (single page application with Angular), that asks for some data through a set of REST APIs based on my server-side application (using Play Framework 2.2.1). So basically, I'm ...
1
vote
0answers
251 views

Generating API keys within an OAuth2 session for non-web-browser clients

I am using Google's OAuth2 for authentication for a website which also has a RESTful API component. I would like to support connections from clients which are not within a web browser. Also, I'd ...
0
votes
0answers
30 views

Understanding the application of hashes, HMACs, and KDFs

I think that I understand the right application cases for the following crypto functions, but I'd like to confirm my understanding and also propagate the safe use of crypto throughout the intertubes. ...
0
votes
0answers
30 views

Securing REST API with HMAC and SPA

I'm developing a JS based SPA and the backend is a rest api which uses HMAC. The site/app doesn't have the concept of registered users but it has the concept of session. How do i make sure that the ...
0
votes
0answers
18 views

How to help devs use HMAC safely with multiple data values?

I work on an open source web app framework whose users (developers) need to generate "security tokens" (MACs) for various purposes. Since they've traditionally been using vulnerable methods like ...
0
votes
0answers
49 views

Using HMAC when sending data through an untrusted server

I have a set up like this: Payment Server (PS) <> Front End (FE) <> Client JS. I need to get some data from the Client JS to the PS, without the FE being able to modify it and have PS prove ...
0
votes
0answers
79 views

Payment Application Integration - Encryption or HMAC

Doing an integration with an online payment provider. Payment provider will be making a web request to my server to provide some information about the basket content. On my end there's no payment ...