> "and the communicator doesn't know the cells - broadcast your radicalisation on radio and let the cells organise themselves. At least one cell member knows ab

> "and the communicator doesn't know the cells - broadcast your radicalisation on radio and let the cells organise themselves. At least one cell member knows about the communication method" Couldn't be done by sending messages encrypted with private key and the cells decode it with public key? Then the problem is: How to trust public keys to have been provided by the "right" correspondent, and not someone from another gang or law enforcement?