1 files changed, 45 insertions, 0 deletions
diff --git a/trie/secure_trie.go b/trie/secure_trie.go
new file mode 100644
index 000000000..f7a1950e5
--- /dev/null
+++ b/trie/secure_trie.go
@@ -0,0 +1,45 @@
+package trie
+
+import "github.com/ethereum/go-ethereum/crypto"
+
+var keyPrefix = []byte("secure-key-")
+
+type SecureTrie struct {
+	*Trie
+}
+
+func NewSecure(root []byte, backend Backend) *SecureTrie {
+	return &SecureTrie{New(root, backend)}
+}
+
+func (self *SecureTrie) Update(key, value []byte) Node {
+	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))
+}
+
+func (self *SecureTrie) Get(key []byte) []byte {
+	return self.Trie.Get(crypto.Sha3(key))
+}
+func (self *SecureTrie) GetString(key string) []byte {
+	return self.Get([]byte(key))
+}
+
+func (self *SecureTrie) Delete(key []byte) Node {
+	return self.Trie.Delete(crypto.Sha3(key))
+}
+func (self *SecureTrie) DeleteString(key string) Node {
+	return self.Delete([]byte(key))
+}
+
+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...))
+}