package chain import ( "github.com/ethereum/go-ethereum/ethtrie" "github.com/ethereum/go-ethereum/ethutil" ) type DerivableList interface { Len() int GetRlp(i int) []byte } func DeriveSha(list DerivableList) []byte { trie := ethtrie.New(ethutil.Config.Db, "") for i := 0; i < list.Len(); i++ { trie.Update(string(ethutil.NewValue(i).Encode()), string(list.GetRlp(i))) } return trie.GetRoot() }