If new identity subscribes to channel it needs to send the shared key to the backend. The shared key is created by the private encr. key stored in the identity doc + the asym public key stored in the channel info
Use this shared key to encrypt the state of the subscriber
If new identity subscribes to channel it needs to send the shared key to the backend. The shared key is created by the private encr. key stored in the identity doc + the asym public key stored in the channel info
Use this shared key to encrypt the state of the subscriber
add tests