Signature PlugIn Help
Signature PlugIn adds a signature to any response made through
it. It does this by adding a _signature
channel to any response.
Signature PlugIn also automatically checks and verifies signed
responses. It does this by verifying any _signature channel it detects.
You can setup a signature at both source and sink, and the sink can be
assured that any response it receives has a matching signature.
Responses that don't match a signature are rejected and a null response
is returned.
The signature is a message digest incorporating the source data, the
timestamp, and the signature-password provided upon
startup.
The signature password itself is never transmitted, it is a symmetric
secret key.
A simple usage example is to use the same Signature plugin to both
generate and check a signature, as in: Signature/Signature/Source/chan.