siv2r
@siv2r.bsky.social
libsecp256k1 dev supported by @spiralbtc | Prev: Maths @IITKgp, Intern @summerofbitcoin
While reviewing the ChillDKG BIP, I noticed a neat property: In a t-of-n Shamir sharing scheme, where combining shares s1, s2, and s3 gives a secret c. If you offset these shares by adding a constant k (i.e., s1 + k, s2 + k, s3 + k), the result will be an offset secret c + k.
January 18, 2025 at 8:37 AM
While reviewing the ChillDKG BIP, I noticed a neat property: In a t-of-n Shamir sharing scheme, where combining shares s1, s2, and s3 gives a secret c. If you offset these shares by adding a constant k (i.e., s1 + k, s2 + k, s3 + k), the result will be an offset secret c + k.