encrypted-messages

In implementations/rust/ockam/ockam_transport_ble/src/driver/packet.rs:104:

// TODO Currently we only support packet lengths up to 2^16
// bits long.
//
// The reason for this is that I'm too lazy right now to setup
// a control channel for this BLE UART implementation and
// instead rely on the probability of receiving an 8 byte long
// packet consisting of 6 zero bytes followed b

for example:

• limit number of kdf iterations for out of order message delivery
• limit max message size
• patch serde_cbor to limit maximum memory allocation

I'm not sure how best to pick these limits, so for now I'm going to leave TODO's in the code that reference this issue.

(probably partial) list of places in the code where this needs to be fixed:

• read_cbor
• `send_