Improvements to Shamir Secret Sharing to verify the integrity of shares issued by a central dealer.

Chelsea H. Komlo fed045bbe5 add verifying commitment		6 lat temu
src	fed045bbe5 add verifying commitment	6 lat temu
.gitignore	86643c7c22 Initial commit of empty cargo	6 lat temu
Cargo.toml	921ec26068 Sharing	6 lat temu