> I'm really surprised that more modern cryptography isn't expected from these radios Military radios absolutely do have modern cryptography. That is half the

> I'm really surprised that more modern cryptography isn't expected from these radios Military radios absolutely do have modern cryptography. That is half the reason why the NSA exists. If you think you know better most likely you are wrong, or you are seeing some system which is held back so they can maintain compatibility with coalition forces. You don’t need revocation certificates to zero out the key material of a radio. In fact it wouldn’t work reliably because it assumes all network participants are within radio range and listening when you want to zero your keys. Much more easy and reliable is to delete the key material localy on the radio. This zeroing can be also performed by a remote signal.