chain/derive_sha.go


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package chain

import (
    "github.com/ethereum/go-ethereum/ethutil"
    "github.com/ethereum/go-ethereum/trie"
)

type DerivableList interface {
    Len() int
    GetRlp(i int) []byte
}

func DeriveSha(list DerivableList) []byte {
    trie := trie.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()
}