On Saturday, 29 March 2014, at 9:44 am, Tamas Blummer wrote: > I used Shamir's Secret Sharing to decompose a seed for a BIP32 master key, > that is I think more future relevant than a single key. > Therefore suggest to adapt the BIP for a length used there typically 16 or 32 > bytes and have a magic code to indicate its use as key vs. seed.
I have expanded the BIP so that it additionally applies to BIP32 master seeds of sizes 128, 256, and 512 bits. https://github.com/whitslack/btctool/blob/bip/bip-xxxx.mediawiki The most significant change versus the previous version is how the coefficients of the polynomials are constructed. Previously they were SHA-256 digests. Now they are SHA-512 digests, modulo a prime number that is selected depending on the size of the secret. ------------------------------------------------------------------------------ _______________________________________________ Bitcoin-development mailing list Bitcoin-development@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bitcoin-development
