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Secure trie shakey / key matching

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This commit is contained in:
obscuren
2015-03-24 15:14:03 +01:00
parent d6da533345
commit bbe795455a
2 changed files with 14 additions and 5 deletions
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11
trie/secure_trie.go
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@ -2,6 +2,8 @@ package trie
import "github.com/ethereum/go-ethereum/crypto"
var keyPrefix = []byte("secure-key-")
type SecureTrie struct {
*Trie
}
@ -11,7 +13,10 @@ func NewSecure(root []byte, backend Backend) *SecureTrie {
}
func (self *SecureTrie) Update(key, value []byte) Node {
return self.Trie.Update(crypto.Sha3(key), value)
shaKey := crypto.Sha3(key)
self.Trie.cache.Put(append(keyPrefix, shaKey...), key)
return self.Trie.Update(shaKey, value)
}
func (self *SecureTrie) UpdateString(key, value string) Node {
return self.Update([]byte(key), []byte(value))
@ -34,3 +39,7 @@ func (self *SecureTrie) DeleteString(key string) Node {
func (self *SecureTrie) Copy() *SecureTrie {
return &SecureTrie{self.Trie.Copy()}
}
func (self *SecureTrie) GetKey(shaKey []byte) []byte {
return self.Trie.cache.Get(append(keyPrefix, shaKey...))
}