tokenly/hmac-auth

HMAC authentication for Tokenly APIs

v1.2.0 2017-11-08 15:06 UTC

Requires

• php: >=5.5.0

Requires (Dev)

• guzzlehttp/guzzle: ~6
• phpunit/phpunit: ~4
• symfony/http-foundation: ~2|~3

Suggests

• guzzlehttp/guzzle: Use with Guzzle >= 6
• rmccue/requests: Use with Requests >= 1.6
• symfony/http-foundation: Used for signing HTTP requests

MIT

• Devon Weller

README

The HMAC authentication component for Tokenly.

Authentication

To authenticate HTTP requests that use this component, you must include 3 HTTP headers with your request:

1. X-Tokenly-Auth-Api-Token
2. X-Tokenly-Auth-Nonce
3. X-Tokenly-Auth-Signature

To generate these headers, you will need an API Token and a secret API Key.

Say my API Token is TWKTkwIQDTvirh6D and my API Secret key is Kun2M2UladalYAeUvXyiKWhFuwrsmSreM841K45O. Here is an explanation of each header.

X-Tokenly-Auth-Api-Token

This token is nothing more than the API Token.

Example: X-Tokenly-Auth-Api-Token: TWKTkwIQDTvirh6D

X-Tokenly-Auth-Nonce

The nonce header is the current unix timestamp in seconds.

Example: X-Tokenly-Auth-Nonce: 1457530047

X-Tokenly-Auth-Signature

The signature is a base64 encoded string using sha256 HMAC. The key for the hash is the API Key. And the message is generated using the following data:

{METHOD}\n
{URL}\n
{PARAMETERS}\n
{API TOKEN}\n
{NONCE}

{METHOD} is the http method such as GET,POST,PUT,DELETE {URL} is the full URL of the api endpoint {PARAMETERS} are required and should be a JSON encoded string representing the parameters. For empty parameters, use {}. {API TOKEN} and {NONCE} are the same as send in the headers.

Items are separated with a single newline character.

After calculating the HMAC, encode the data in base64 format.

Example:

Using the values above and a request of GET https://www.example.com/api/v1/mystuff, the signature header will be:

X-Tokenly-Auth-Signature: hZ6SDgcZzo5AYrS9yopEQo068ax0NojG/CfXWG+RJEA