We
present here a more memory efficient method for encoding binary
information into words of prescribed length and weight. Existing
solutions either require complicated float point arithmetic or
additional memory overhead, making it a challenge for resource
constrained computing environment. The solution we propose here solves
these problems yet obtains better coding efficiency by a memory
efficient approximation of the critical intermediate value in constant
weight coding. For the time being, the design presented in this brief is
the most compact one for any code-based encryption schemes.
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