#HTTPIE JWT MAC#

How you want to store the tokens and retrieve them is up to you.

The get_hawk_id function is a function that takes a request and a tokenid and returns a tuple of (token_id, token_key). Here is a demo of how we implemented it for Daybed, a form validation and data storage API: If you’re writing pyramid applications, you’ll be happy to learn that Ryan Kelly put together a library that makes Hawk work as an Authentication provider for them. In addition, it helps crafting requests using the requests library:Īlternatively, if you don’t have the token id and key, you can pass the hawk session token presented earlier and the lib will take care of the derivation for you. $ http GET localhost:5000/registration -auth-type=hawk -auth='id:key' $ http GET localhost: 5000 /registration -auth-type=hawk -auth= 'id:key' Luckily, HTTPie allows you to plug different authentication schemes for it, so we created a wrapper around mohawk to add hawk support to the requests lib.ĭoing hawk requests in your terminal is now as simple as: To showcase APIs in the documentation, we like to use HTTPie, a curl-replacement with a nicerĪPI, built around the python requests library. Then, the key material you’ll get out of the HKDF need to be separated into two parts, the first 32 hex caracters are the hawk id, and the next 32 ones are the hawk key. The /picl/v1/sessionToken is a reference to this way ofĭeriving the credentials, not an actual URL. You’ll need to use the following parameters: key_material = HKDF(hawk_session, '', '/picl/v1/sessionToken', 32*2) In order to get the hawk credentials, you’ll need to:įirst, do an HKDF derivation on the given session token. This token can be derived to split this string in two values (hawk id and hawk key) that you will use to sign your next requests. When your server application needs to send you the credentials, it will return it inside a specific Hawk-Session-Token header. The excellent team behind Firefox Accounts put together a scheme to do that, if you are not interested in the details, jump directly to the next section. To sign the requests, a client needs to retrieve a token id and a token key from the server.

#HTTPIE JWT MAC#

It is an authentication scheme for HTTP, built around HMAC digests of requests and responses.Įvery authenticated client request has an Authorization header containing a MAC (Message Authentication Code) and some additional metadata, then each server response to authenticated requests contains a Server-Authorization header thatauthenticates the response, so the client is sure it comes from the right server. Hawk is a relatively new technology, crafted by one of the original OAuth specification authors, that intends to replace the 2-legged OAuth authentication scheme using a simpler approach. At Mozilla, we recently had to implement the Hawk authentication scheme for a number of projects, and we came up creating two libraries to ease integration into Pyramid and Node.js apps.

Httpie jwt