  The physical attributes of the dynamic vehicle-to-vehicle (V2V) propagation
channel can be utilised for the generation of highly random and symmetric
cryptographic keys. However, in a physical-layer key agreement scheme,
non-reciprocity due to inherent channel noise and hardware impairments can
propagate bit disagreements. This has to be addressed prior to the symmetric
key generation which is inherently important in social Internet of Things (IoT)
networks, including in adversarial settings (e.g. battlefields). In this paper,
we parametrically incorporate temporal variability attributes, such as
three-dimensional (3D) scattering and scatterers mobility. Accordingly, this is
the first work to incorporate such features into the key generation process by
combining non-reciprocity compensation with turbo codes. Preliminary results
indicate a significant improvement when using Turbo Codes in bit mismatch rate
(BMR) and key generation rate (KGR) in comparison to sample indexing
techniques.
