[Hardware] Notes... The case for an open client

[Elektron]

> A CRC could be used instead of a sum for the residual. The CRC 
> polynomial X^32+1 would be easy enough to implement in both hardware 
> and software and offers the same distributive properties as addition. 
> It would be nice if everyone used the same residual function but it's 
> not absolutely necessary. The residual is used for local testing and 
> random verification.

Isn't that just a rotate and XOR, anyway? (which isn't much better than 
just a XOR either)

- Purr