Re: Simple secret-sharing protocol with verifiability

Kristian Gjøsteen <kristiag+news@xxxxxxxxxxxx> wrote in
news:8olqf3-og02.ln1@xxxxxxxxxxxxxxxxxxxxx:

Neo <neoscandal@xxxxxxxxx> wrote:
The secret sharing scheme is key K is divided as k1,k2,....kn b/w n
users such that k1 xor k2 xor...kn = K. All the n keys are thus
required to form the key.

According to my verification protocol, the following hashes are built
initally when k1, k2.. etc are created:

h(k1), h(h(k1),k2), h(h(h(k1),k2),k3).... and so on upto kn. We now
have n digests.

This isn't secure if K is one bit long.

Use a commitment scheme. Every player gets his share. Everyone gets
a commitment to every share. Every player gets an opening of his
share.

Binding prevents any player from cheating. Hiding prevents leakage
of the secret.


Could you provide links where this is expalined more clearly. The key I
intend to use would minimum be 128 bits long.

Regards
.

Relevant Pages

  • Re: Simple secret-sharing protocol with verifiability
    ... digests. ... This isn't secure if K is one bit long. ... Use a commitment scheme. ... Every player gets his share. ...
    (sci.crypt)
  • Re: Recording digital TV when analog is switched off?
    ... At home I have a Soni TV with built in Freeview, plus a Soni DVD ... along with a Digi Box and a basic VCR player. ...
    (uk.media.tv.misc)
  • Re: RIP LFC
    ... See if you can spot the player among this pile of fucking garbage: ... Fernando Morientes Real Madrid £6,300,000 13.01.2005 ... Once I built a railroad, ... can you spare a dime? ...
    (uk.sport.football.clubs.liverpool)
  • Re: ... anybody actually talk about hi-fi here anymore
    ... is still built to a higher technical quality. ... Expensive equipment tends to be built to a higher ... Name some commercial CD players or sound cards that do so. ... Why don't you admit that you're badly disturbed that I own an SACD player ...
    (rec.audio.pro)
  • Re: ... anybody actually talk about hi-fi here anymore
    ... post) is still built to a higher technical quality. ... I already have a SACD player that sounds and measures well. ...
    (rec.audio.pro)
Quantcast