matt wrote:
> Use dd(1). Say the key is 1000B:
> $ dd if=key.file of=key.file.1 bs=300 count=1
> $ dd if=key.file of=key.file.2 bs=300 skip=1 count=1
> $ dd if=key.file of=key.file.3 bs=300 skip=2
>
This reveals key bits to the holders, however. Using
a K-of-N threshold scheme, or even a simple XOR, prevents
the holders from having any knowledge of the key bits.
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