...The primary aim is to simply learn the fundamentals and finer details of cryptography in general and build working examples of my ideas in code.
The code is shared here for posterity (future folk) in the guise that it may help others also on the path to cryptography.
This code demo uses a 256bit rolling hash table (8x8bytes) at its heart to mix together pre-defined parameters in a way that allows the cipher to produce encoded output that is locked to a key of arbitrary length without padding.
Based upon some random data points the cipher produces encoded output that is non-deterministic in nature, the same key and message will never produce the same output each time it's run.
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