Communicating sensitive data

An apparatus for a transmitting node, comprising:

• a processor;
• and
• a memory communicatively coupled to the processor, the memory including instructions that, when executed by the processor, cause the apparatus to:
• transmit a plurality of encoded data messages over a wireless channel to a receiving node;
• receive ACK/NACK responses from the receiving node, respectively indicating successful/unsuccessful decoding by the receiving node of the encoded data messages;
• and
• responsive to receiving a NACK response for a particular encoded data message of the encoded data messages:
• refrain from re-transmitting said particular encoded data message to the receiving node and,
• transmit a next encoded data message of the plurality of encoded data messages to the receiving node.

A method for a receiving node, comprising:

• receiving a plurality of encoded data messages over a wireless channel from a transmitting node;
• attempting to decode the received encoded data messages;
• determining successful/unsuccessful decoding of the encoded data messages;
• responsive to determining successful decoding of a particular encoded data message, allocating the particular decoded data message to a pool associated with the transmitting node;
• and,
• responsive to determining unsuccessful decoding of a particular encoded data message, selecting a replacement data message at random according to a predetermined probability distribution from the pool associated with the transmitting node.