Split private Key

Michael Sierchio kudzu@tenebras.com
Wed Sep 12 15:12:02 2001

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.