Entries tagged ssss

Related tags: debian, lenny, meta, pre-disclosure.

Death is... whimsical... today.

Monday, 12 January 2009

I'm not sure how you can pre-announce something in a way that cannot be later faked.

The best I can imagine is you write it in a text file and post the size / hash of the file.

steve@skx:~$ ls -l 10-march-2009
-rw-r--r-- 1 steve users 234 Jan 12 21:40 10-march-2009
steve@skx:~$ sha1sum 10-march-2009
99d1b6d625ed4c15a3be2be5fec63c17941c370d  10-march-2009
steve@skx:~$ md5sum 10-march-2009
1a0e68b8fbb3b0fe30e5b4a9413ceeec  10-march-2009

I don't need anybody to keep me honest, but I welcome interesting suggestions on more neat ways to pre-confirm you have content that hasn't been changed between being written and being released...?

I guess you could use GPG and a disposible key-pair, and then post the secret key afterward, but that feels kinda wrong too.

Update of course you could post the detached signature. D'oh.

Shamir's Secret Sharing could be another option - posting just enough pieces of the secret to make recovery possible with the addition of one piece that was witheld until the later date. Jake wrote a nice introduction to secret sharing a couple of years ago.

ObFilm: Léon



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