Beacon node authentication

Send authenticated requests to a beacon node protected by HTTP Basic, or header-based access control.

HTTP Basic Access Authentication

If you want to use Charon with a HTTP basic access authentication protected beacon node, then you can supply charon run with the --beacon-node-headers flag. The flag's value should be set like: Authorization=Basic <credentials> where Authorizationwill be the header key and Basic <credentials> will be the header value. The <credentials> are a Base64 encoding of the username and password joined by a single colon :.

These headers will be sent in every request to every beacon node. This could leak your credentials to the other beacon nodes. Make sure you trust every listed beacon node.

Usage example

Suppose we have a HTTP Basic access protected beacon node with username john and password doe. To access it we would construct the credentials by running the following command:

echo -n "john:doe" | base64

Then you could pass the flag to your Charon instance like this:

charon run --beacon-node-headers="Authorization=Basic am9objpkb2U="

Or you could specify it as an environment variable like this:

CHARON_BEACON_NODE_HEADERS="Authorization=Basic am9objpkb2U="

Note that 'Authorization' is followed with an = rather than the usual :.