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// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package transactions
import (
"path/filepath"
"testing"
"github.com/algorand/go-algorand/config"
"github.com/algorand/go-algorand/crypto"
"github.com/algorand/go-algorand/crypto/merklearray"
"github.com/algorand/go-algorand/protocol"
"github.com/algorand/go-algorand/test/framework/fixtures"
"github.com/algorand/go-algorand/test/partitiontest"
"github.com/stretchr/testify/require"
)
// TxnMerkleElemRaw this struct helps creates a hashable struct from the bytes
type TxnMerkleElemRaw struct {
Txn crypto.Digest // txn id
Stib crypto.Digest // hash value of transactions.SignedTxnInBlock
}
func txnMerkleToRaw(txid [crypto.DigestSize]byte, stib [crypto.DigestSize]byte) (buf []byte) {
buf = make([]byte, 2*crypto.DigestSize)
copy(buf[:], txid[:])
copy(buf[crypto.DigestSize:], stib[:])
return
}
// ToBeHashed implements the crypto.Hashable interface.
func (tme *TxnMerkleElemRaw) ToBeHashed() (protocol.HashID, []byte) {
return protocol.TxnMerkleLeaf, txnMerkleToRaw(tme.Txn, tme.Stib)
}
func TestTxnMerkleProof(t *testing.T) {
partitiontest.PartitionTest(t)
defer fixtures.ShutdownSynchronizedTest(t)
t.Parallel()
a := require.New(fixtures.SynchronizedTest(t))
var fixture fixtures.RestClientFixture
fixture.Setup(t, filepath.Join("nettemplates", "OneNodeFuture.json"))
defer fixture.Shutdown()
client := fixture.LibGoalClient
// We will create three new accounts, transfer some amount of money into
// the first account, and then transfer a smaller amount to the second
// account while closing out the rest into the third.
accountList, err := fixture.GetWalletsSortedByBalance()
a.NoError(err)
baseAcct := accountList[0].Address
walletHandle, err := client.GetUnencryptedWalletHandle()
a.NoError(err)
acct0, err := client.GenerateAddress(walletHandle)
a.NoError(err)
status, err := client.Status()
a.NoError(err)
// Transfer some money to acct0, as well as other random accounts to
// fill up the Merkle tree with more than one element.
// we do not want to have a full tree in order the catch an empty element edge case
for i := 0; i < 5; i++ {
accti, err := client.GenerateAddress(walletHandle)
a.NoError(err)
_, err = client.SendPaymentFromUnencryptedWallet(baseAcct, accti, 1000, 10000000, nil)
a.NoError(err)
}
tx, err := client.SendPaymentFromUnencryptedWallet(baseAcct, acct0, 1000, 10000000, nil)
a.NoError(err)
txid := tx.ID()
txidSHA256 := tx.IDSha256() // only used for verification
confirmedTx, err := fixture.WaitForConfirmedTxn(status.LastRound+10, baseAcct, txid.String())
a.NoError(err)
a.NotNil(confirmedTx.ConfirmedRound)
blk, err := client.BookkeepingBlock(*confirmedTx.ConfirmedRound)
a.NoError(err)
proofresp, proof, err := fixture.TransactionProof(txid.String(), *confirmedTx.ConfirmedRound, crypto.Sha512_256)
a.NoError(err)
proofrespSHA256, proofSHA256, err := fixture.TransactionProof(txid.String(), *confirmedTx.ConfirmedRound, crypto.Sha256)
a.NoError(err)
element := TxnMerkleElemRaw{Txn: crypto.Digest(txid)}
copy(element.Stib[:], proofresp.Stibhash[:])
elems := make(map[uint64]crypto.Hashable)
elems[proofresp.Idx] = &element
err = merklearray.Verify(blk.TxnCommitments.NativeSha512_256Commitment.ToSlice(), elems, proof.ToProof())
if err != nil {
t.Logf("blk.TxnCommitments : %v \nproof path %v \ndepth: %d \nStibhash %v\nIndex: %d", blk.TxnCommitments.NativeSha512_256Commitment.ToSlice(), proof.Path, proof.TreeDepth, proofresp.Stibhash, proofresp.Idx)
a.NoError(err)
}
element = TxnMerkleElemRaw{Txn: crypto.Digest(txidSHA256)}
copy(element.Stib[:], proofrespSHA256.Stibhash[:])
elems = make(map[uint64]crypto.Hashable)
elems[proofrespSHA256.Idx] = &element
err = merklearray.VerifyVectorCommitment(blk.TxnCommitments.Sha256Commitment.ToSlice(), elems, proofSHA256.ToProof())
if err != nil {
t.Logf("blk.TxnCommitments : %v \nproof path %v \ndepth: %d \nStibhash %v\nIndex: %d", blk.TxnCommitments.Sha256Commitment.ToSlice(), proofSHA256.Path, proofSHA256.TreeDepth, proofrespSHA256.Stibhash, proofrespSHA256.Idx)
a.NoError(err)
}
}
// make sure transaction proof SHA256 does not exist in current consensus version (until we upgrade)
func TestTxnMerkleProofSHA256(t *testing.T) {
partitiontest.PartitionTest(t)
defer fixtures.ShutdownSynchronizedTest(t)
t.Parallel()
a := require.New(fixtures.SynchronizedTest(t))
var fixture fixtures.RestClientFixture
fixture.Setup(t, filepath.Join("nettemplates", "TwoNodes50EachV32.json"))
defer fixture.Shutdown()
client := fixture.LibGoalClient
// We will create three new accounts, transfer some amount of money into
// the first account, and then transfer a smaller amount to the second
// account while closing out the rest into the third.
accountList, err := fixture.GetWalletsSortedByBalance()
a.NoError(err)
baseAcct := accountList[0].Address
walletHandle, err := client.GetUnencryptedWalletHandle()
a.NoError(err)
acct0, err := client.GenerateAddress(walletHandle)
a.NoError(err)
status, err := client.Status()
a.NoError(err)
// Transfer some money to acct0, as well as other random accounts to
// fill up the Merkle tree with more than one element.
// we do not want to have a full tree in order the catch an empty element edge case
for i := 0; i < 5; i++ {
accti, err := client.GenerateAddress(walletHandle)
a.NoError(err)
_, err = client.SendPaymentFromUnencryptedWallet(baseAcct, accti, 1000, 10000000, nil)
a.NoError(err)
}
tx, err := client.SendPaymentFromUnencryptedWallet(baseAcct, acct0, 1000, 10000000, nil)
a.NoError(err)
txid := tx.ID()
confirmedTx, err := fixture.WaitForConfirmedTxn(status.LastRound+10, baseAcct, txid.String())
a.NoError(err)
a.NotNil(confirmedTx.ConfirmedRound)
blk, err := client.BookkeepingBlock(*confirmedTx.ConfirmedRound)
a.NoError(err)
proto := config.Consensus[blk.CurrentProtocol]
a.False(proto.EnableSHA256TxnCommitmentHeader)
a.NotEqual(crypto.Digest{}, blk.TxnCommitments.NativeSha512_256Commitment)
a.Equal(crypto.Digest{}, blk.TxnCommitments.Sha256Commitment) // should be empty since not yet supported
}
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