public void TestVerifyProof()
{
var mpt = new MPTTrie <TestKey, TestValue>(mptdb.GetSnapshot(), root.Hash);
HashSet <byte[]> proof = mpt.GetProof("ac01".HexToBytes());
TestValue value = MPTTrie <TestKey, TestValue> .VerifyProof(root.Hash, "ac01".HexToBytes(), proof);
Assert.IsNotNull(value);
Assert.AreEqual(value.ToString(), "abcd");
}
public void TestVerifyProof()
{
var mpt = new MPTTrie(rootHash, mptdb);
var result = mpt.GetProof("ac01".HexToBytes(), out HashSet <byte[]> proof);
Assert.IsTrue(result);
result = MPTTrie.VerifyProof(rootHash, "ac01".HexToBytes(), proof, out byte[] value);
Assert.IsTrue(result);
}
public bool VerifyProof(UInt256 root, byte[] key, HashSet <byte[]> proof, out byte[] value)
{
var result = MPTTrie.VerifyProof(root, key, proof, out value);
if (result)
{
value = value.AsSerializable <StorageItem>().Value;
}
return(result);
}
public void TestVerifyProof()
{
var mpt = new MPTTrie <TestKey, TestValue>(mptdb.GetSnapshot(), root.Hash);
var result = mpt.TryGetProof("ac01".HexToBytes(), out var proof);
Assert.IsTrue(result);
TestValue value = MPTTrie <TestKey, TestValue> .VerifyProof(root.Hash, "ac01".HexToBytes(), proof);
Assert.IsNotNull(value);
Assert.AreEqual(value.ToString(), "abcd");
}
public void TestEmptyValueIssue633()
{
var key = "01".HexToBytes();
var snapshot = new TestSnapshot();
var mpt = new MPTTrie <TestKey, TestValue>(snapshot, null);
mpt.Put(key, Array.Empty <byte>());
var val = mpt["01".HexToBytes()];
Assert.IsNotNull(val);
Assert.AreEqual(0, val.Size);
var r = mpt.TryGetProof(key, out var proof);
Assert.IsTrue(r);
val = MPTTrie <TestKey, TestValue> .VerifyProof(mpt.Root.Hash, key, proof);
Assert.IsNotNull(val);
Assert.AreEqual(0, val.Size);
}
private string VerifyProof(UInt256 root_hash, byte[] proof)
{
var proofs = new HashSet <byte[]>();
using MemoryStream ms = new MemoryStream(proof, false);
using BinaryReader reader = new BinaryReader(ms, Utility.StrictUTF8);
var key = reader.ReadVarBytes(MPTNode.MaxKeyLength);
var count = reader.ReadVarInt();
for (ulong i = 0; i < count; i++)
{
proofs.Add(reader.ReadVarBytes());
}
var skey = key.AsSerializable <StorageKey>();
var sitem = MPTTrie <StorageKey, StorageItem> .VerifyProof(root_hash, skey, proofs);
if (sitem is null)
{
throw new RpcException(-100, "Verification failed");
}
return(Convert.ToBase64String(sitem.Value));
}