`coinbase/kryptology` GG20 DKG ships secret shares unencrypted

GG20’s joint key-generation procedure (inherited from GG18) assumes the Round 2 P2P delivery of each Shamir share $x_{ij}$ runs over a confidential channel, instantiated in the GG18 paper with Paillier encryption keyed to the recipient. The Coinbase library’s GG20 implementation drops the encryption step and returns the share as a bare struct field (source):

1// FILE: pkg/tecdsa/gg20/participant/dkg_round2.go — coinbase/kryptology
2
3type DkgRound2P2PSend struct {
4    xij *v1.ShamirShare  // raw share — no Paillier encryption applied
5}
6// ...
7p2PSend[id] = &DkgRound2P2PSend{ xij: dp.state.X[id-1] }