github.com/deroproject/derosuite@v2.1.6-1.0.20200307070847-0f2e589c7a2b+incompatible/walletapi/tx_creation_test.go

// Copyright 2017-2018 DERO Project. All rights reserved.
// Use of this source code in any form is governed by RESEARCH license.
// license can be found in the LICENSE file.
// GPG: 0F39 E425 8C65 3947 702A  8234 08B2 0360 A03A 9DE8
//
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

package walletapi

import "os"
import "fmt"
import "testing"
import "bytes"
import "crypto/rand"
import "path/filepath"
import "encoding/hex"
import "encoding/binary"
import "runtime/pprof"

import "github.com/deroproject/derosuite/globals"
import "github.com/deroproject/derosuite/crypto"
import "github.com/deroproject/derosuite/crypto/ringct"
import "github.com/deroproject/derosuite/transaction"

func init() {
	globals.Init_rlog()
}

// this will test that the keys are placed properly and thus can be decoded by recievers
func Test_Creation_TX(t *testing.T) {

	temp_db := filepath.Join(os.TempDir(), "dero_temporary_test_wallet.db")

	os.Remove(temp_db)

	w, err := Create_Encrypted_Wallet(temp_db, "QWER", *crypto.RandomScalar())
	if err != nil {
		t.Fatalf("Cannot create encrypted wallet, err %s", err)
	}

	defer os.Remove(temp_db) // cleanup after test
	//sender,_ := Generate_Keys_From_Random() // we have a single sender

	var receivers []*Account

	randomBytes := make([]byte, 4)

	for loop := 0; loop < 10; loop++ { // run the test randomly 200 times
		rand.Read(randomBytes)
		random_inputs := 1 + (binary.LittleEndian.Uint32(randomBytes) % 20) //minimum 1 input is necessary
		rand.Read(randomBytes)
		random_outputs := 1 + (binary.LittleEndian.Uint32(randomBytes) % 20) //minimum 1 output is necessary

		if loop == 0 {
			random_inputs = 100
		}

		if loop == 1 {
			random_outputs = 200 // randomly place 200 outputs in single tx
		}

		if loop == 2 {
			random_inputs = 500
			random_outputs = 2
		}

		txw := TX_Wallet_Data{WAmount: 4000000000000}
		txw.TXdata.Index_Global = 739
		txw.TXdata.Height = 730
		txw.WKey.Destination = crypto.HexToKey("dbdfd2a3e9da6911b0a3e37e8e448f2de2477f81760585c2f197736bac127e0f")
		txw.WKey.Mask = crypto.HexToKey("01e4e85ab0b5e30dd86b5356f0f6b4177738b9e6b32041c4e4781a2f26083101")
		txw.WKimage = crypto.HexToKey("d8fb3b4260aea6582400a5f48244ff3f7c4dc36420698e3decc5d28ba04733c2")
		txw.TXdata.InKey.Destination = crypto.HexToKey("ed0da9e74d240088a07909ea354b8d140b753642e25495e0931b4623b25ff523")
		txw.TXdata.InKey.Mask = crypto.HexToKey("dbddab6c6b3063074e7cfd1a7f83f184ad78e92c8ff25118c0ed4edc77015948")

		var outs []ringct.Output_info
		for i := uint32(0); i < random_outputs; i++ {
			r, _ := Generate_Keys_From_Random()
			receivers = append(receivers, r)

			out := ringct.Output_info{Public_Spend_Key: receivers[i].GetAddress().SpendKey,
				Public_View_Key: receivers[i].GetAddress().ViewKey}

			if i == 0 { // balance the outputs
				out.Amount = uint64(random_inputs) * txw.WAmount
			}
			outs = append(outs, out) // fill outs with random address
		}

		var ins []ringct.Input_info
		for i := uint32(0); i < random_inputs; i++ {

			ins = append(ins, ringct.Input_info{Amount: txw.WAmount, Key_image: crypto.Hash(txw.WKimage), Sk: txw.WKey, Index_Global: txw.TXdata.Index_Global})

			//now we must the ring members
			ins[i].Ring_Members = append(ins[i].Ring_Members, txw.TXdata.Index_Global)
			ins[i].Pubs = append(ins[i].Pubs, txw.TXdata.InKey)

			// lets add 5 ring members randomly
			for j := uint64(0); j < 5; j++ {
				ins[i].Ring_Members = append(ins[i].Ring_Members, txw.TXdata.Index_Global+j+1)
				ins[i].Pubs = append(ins[i].Pubs, ringct.CtKey{Destination: *crypto.RandomScalar(), Mask: *crypto.RandomScalar()})
			}
		}

		// 739th main net consumed output
		var payment_id []byte

		if loop%2 == 0 {
			payment_id = make([]byte, 32, 32) // test 32 byte payment id
		} else {
			payment_id = make([]byte, 8, 8) // make encrypted payment ID
		}

		if loop%3 == 0 {
			payment_id = make([]byte, 0, 0) // test with out payment id
		}

		bulletproof := false
		if loop%2 == 1 {
			bulletproof = true
		}

		tx := w.Create_TX_v2(ins, outs, 0, 0, payment_id, bulletproof)

		if !tx.RctSignature.Verify() {
			t.Fatalf("TX ring signature verification failed")
		}

		// now check whether the outputs can be verified successfuly after serdes
		var tx2 transaction.Transaction
		tx2.DeserializeHeader(tx.Serialize())
		tx2.Parse_Extra()

		public_key := tx2.Extra_map[transaction.TX_PUBLIC_KEY].(crypto.Key)

		if len(payment_id) == 8 { // test whether payment ID was encrypted and decrypted successfully
			epayid := tx.PaymentID_map[transaction.TX_EXTRA_NONCE_ENCRYPTED_PAYMENT_ID].([]byte)

			derivation := crypto.KeyDerivation(&public_key, &receivers[0].Keys.Viewkey_Secret)
			payid := EncryptDecryptPaymentID(derivation, public_key, epayid)

			t.Logf("epay id %x  decrypted %x", epayid, payid)

			if !bytes.Equal(payment_id, payid) {
				t.Fatalf("8 byte encrypted payment ID missing failed")
			}

		}

		if len(payment_id) == 32 { // test full 32 byte payment id
			if !bytes.Equal(payment_id, tx.PaymentID_map[transaction.TX_EXTRA_NONCE_PAYMENT_ID].([]byte)) {
				t.Fatalf("32 byte payment ID missing, failed")
			}
		}
		for output_index := range outs {

			tx_out_to_key := tx2.Vout[output_index].Target.(transaction.Txout_to_key)
			if !receivers[output_index].Is_Output_Ours(public_key, uint64(output_index), tx_out_to_key.Key) {
				t.Fatalf("Output mismatch index %d", output_index)
			}

		}
		t.Logf("inputs %5d\toutputs %5d\t tx size %4d KB %+v", random_inputs, random_outputs, len(tx.Serialize())/1024, bulletproof)
	}

}

// this will test that the keys are placed properly and thus can be decoded by recievers
// this also forces the ring size from 2 to 10
func Test_Creation_TX_Size(t *testing.T) {

	temp_db := filepath.Join(os.TempDir(), "dero_temporary_test_wallet.db")

	os.Remove(temp_db)

	w, err := Create_Encrypted_Wallet(temp_db, "QWER", *crypto.RandomScalar())
	if err != nil {
		t.Fatalf("Cannot create encrypted wallet, err %s", err)
	}

	defer os.Remove(temp_db) // cleanup after test
	//sender,_ := Generate_Keys_From_Random() // we have a single sender

	var receivers []*Account

	randomBytes := make([]byte, 4)

	for loop := 0; loop < 1; loop++ { // run the test randomly 200 times
		rand.Read(randomBytes)
		random_inputs := 1 + (binary.LittleEndian.Uint32(randomBytes) % 20) //minimum 1 input is necessary
		rand.Read(randomBytes)
		random_outputs := 1 + (binary.LittleEndian.Uint32(randomBytes) % 20) //minimum 1 output is necessary

		random_inputs = 20 * uint32(loop+1)
		random_outputs = 2

		txw := TX_Wallet_Data{WAmount: 4000000000000}
		txw.TXdata.Index_Global = 739
		txw.TXdata.Height = 730
		txw.WKey.Destination = crypto.HexToKey("dbdfd2a3e9da6911b0a3e37e8e448f2de2477f81760585c2f197736bac127e0f")
		txw.WKey.Mask = crypto.HexToKey("01e4e85ab0b5e30dd86b5356f0f6b4177738b9e6b32041c4e4781a2f26083101")
		txw.WKimage = crypto.HexToKey("d8fb3b4260aea6582400a5f48244ff3f7c4dc36420698e3decc5d28ba04733c2")
		txw.TXdata.InKey.Destination = crypto.HexToKey("ed0da9e74d240088a07909ea354b8d140b753642e25495e0931b4623b25ff523")
		txw.TXdata.InKey.Mask = crypto.HexToKey("dbddab6c6b3063074e7cfd1a7f83f184ad78e92c8ff25118c0ed4edc77015948")

		var outs []ringct.Output_info
		for i := uint32(0); i < random_outputs; i++ {
			r, _ := Generate_Keys_From_Random()
			receivers = append(receivers, r)

			out := ringct.Output_info{Public_Spend_Key: receivers[i].GetAddress().SpendKey,
				Public_View_Key: receivers[i].GetAddress().ViewKey}

			if i == 0 { // balance the outputs
				out.Amount = uint64(random_inputs) * txw.WAmount
			}
			outs = append(outs, out) // fill outs with random address
		}

		ring_sizes := []uint64{1, 2, 3, 4, 5, 6, 7, 8, 10}

		for x := range ring_sizes {

			var ins []ringct.Input_info
			for i := uint32(0); i < random_inputs; i++ {

				ins = append(ins, ringct.Input_info{Amount: txw.WAmount, Key_image: crypto.Hash(txw.WKimage), Sk: txw.WKey, Index_Global: txw.TXdata.Index_Global})

				//now we must the ring members
				ins[i].Ring_Members = append(ins[i].Ring_Members, txw.TXdata.Index_Global)
				ins[i].Pubs = append(ins[i].Pubs, txw.TXdata.InKey)

				// lets add 5 ring members randomly
				for j := uint64(0); j < ring_sizes[x]; j++ {
					ins[i].Ring_Members = append(ins[i].Ring_Members, txw.TXdata.Index_Global+j+1)
					ins[i].Pubs = append(ins[i].Pubs, ringct.CtKey{Destination: *crypto.RandomScalar(), Mask: *crypto.RandomScalar()})
				}
			}

			// 739th main net consumed output
			var payment_id []byte

			if loop%2 == 0 {
				payment_id = make([]byte, 32, 32) // test 32 byte payment id
			} else {
				payment_id = make([]byte, 8, 8) // make encrypted payment ID
			}

			if loop%3 == 0 {
				payment_id = make([]byte, 0, 0) // test with out payment id
			}

			bulletproof := true

			tx := w.Create_TX_v2(ins, outs, 0, 0, payment_id, bulletproof)

			if !tx.RctSignature.Verify() {
				t.Fatalf("TX ring signature verification failed")
			}

			// now check whether the outputs can be verified successfuly after serdes
			var tx2 transaction.Transaction
			tx2.DeserializeHeader(tx.Serialize())
			tx2.Parse_Extra()

			public_key := tx2.Extra_map[transaction.TX_PUBLIC_KEY].(crypto.Key)

			if len(payment_id) == 8 { // test whether payment ID was encrypted and decrypted successfully
				epayid := tx.PaymentID_map[transaction.TX_EXTRA_NONCE_ENCRYPTED_PAYMENT_ID].([]byte)

				derivation := crypto.KeyDerivation(&public_key, &receivers[0].Keys.Viewkey_Secret)
				payid := EncryptDecryptPaymentID(derivation, public_key, epayid)

				//t.Logf("epay id %x  decrypted %x", epayid, payid)

				if !bytes.Equal(payment_id, payid) {
					t.Fatalf("8 byte encrypted payment ID missing failed")
				}

			}

			if len(payment_id) == 32 { // test full 32 byte payment id
				if !bytes.Equal(payment_id, tx.PaymentID_map[transaction.TX_EXTRA_NONCE_PAYMENT_ID].([]byte)) {
					t.Fatalf("32 byte payment ID missing, failed")
				}
			}
			for output_index := range outs {

				tx_out_to_key := tx2.Vout[output_index].Target.(transaction.Txout_to_key)
				if !receivers[output_index].Is_Output_Ours(public_key, uint64(output_index), tx_out_to_key.Key) {
					t.Fatalf("Output mismatch index %d", output_index)
				}

			}
			t.Logf("inputs %5d\toutputs %5d\t  ring size %5d tx size %4d KB %+v", random_inputs, random_outputs, ring_sizes[x], len(tx.Serialize())/1024, bulletproof)
		}
	}

}

/* Related logs here for improvig the test here
 *
[wallet dERoiV]: integrated_address
Random payment ID: <0cbd6e050cf3b73c>
Matching integrated address: dERijfr9y7XhWkdEPp17RJLXVoHkr2ucMdEbgGgpskhLb33732LBifWMCZhPga3EcjXoYqfM9jRv3W3bnWUSpdmKL24FBjG6ctTAEg1jrhDHh
[wallet dERoiV]: address
dERoiVavtPjhWkdEPp17RJLXVoHkr2ucMdEbgGgpskhLb33732LBifWMCZhPga3EcjXoYqfM9jRv3W3bnWUSpdmK5Jur1PhN6P
[wallet dERoiV]: help

[wallet dERoiV]: transfer dERijfr9y7XhWkdEPp17RJLXVoHkr2ucMdEbgGgpskhLb33732LBifWMCZhPga3EcjXoYqfM9jRv3W3bnWUSpdmKL24FBjG6ctTAEg1jrhDHh 1
Wallet password:
Sending 1.000000000000.  The transaction fee is 0.049197120000
Is this okay?  (Y/Yes/N/No): y
Transaction successfully submitted, transaction <ea551b02b9f1e8aebe4d7b1b7f6bf173d76ae614cb9a066800773fee9e226fd7>
You can check its status by using the `show_transfers` command.
[wallet dERoiV]: get_tx_key ea551b02b9f1e8aebe4d7b1b7f6bf173d76ae614cb9a066800773fee9e226fd7
unknown command: ge_tx_key ea551b02b9f1e8aebe4d7b1b7f6bf173d76ae614cb9a066800773fee9e226fd7
[wallet dERoiV]: get_tx_key ea551b02b9f1e8aebe4d7b1b7f6bf173d76ae614cb9a066800773fee9e226fd7
Wallet password:
Tx key: af7b5a4e75410d585e7faeb254811ea1274f6d20205205213c79655fe3958c07
Height 2175, transaction <31b019dba022b29f8342f71c4ede91fea8b4236469786ae55f131af3432d3989>, received 31.661910734197
Height 2175, transaction <ea551b02b9f1e8aebe4d7b1b7f6bf173d76ae614cb9a066800773fee9e226fd7>, received 7.862704628648
*  Height 2175, transaction <ea551b02b9f1e8aebe4d7b1b7f6bf173d76ae614cb9a066800773fee9e226fd7>, received 1.000000000000
Height 2175, transaction <ea551b02b9f1e8aebe4d7b1b7f6bf173d76ae614cb9a066800773fee9e226fd7>, spent 8.903560733970
Height 2175, transaction <ea551b02b9f1e8aebe4d7b1b7f6bf173d76ae614cb9a066800773fee9e226fd7>, spent 0.008341014678

*/
// this will test that the keys are placed properly and thus can be decoded by recievers
func Test_Creation_TX_Encrypted_PaymentID_check(t *testing.T) {
	temp_db := filepath.Join(os.TempDir(), "dero_temporary_test_wallet.db")

	os.Remove(temp_db)

	w, err := Create_Encrypted_Wallet(temp_db, "QWER", crypto.HexToKey("aebcbe93d8c386f954bbc2122d9d6423b7e5b77a6ad31c6a43855e15b9760c0d"))
	if err != nil {
		t.Fatalf("Cannot create encrypted wallet, err %s", err)
	}

	defer os.Remove(temp_db) // cleanup after test

	tx_created_by_oldwallet_hex := "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"
	tx_created_by_oldwallet, _ := hex.DecodeString(tx_created_by_oldwallet_hex)

	var tx transaction.Transaction

	err = tx.DeserializeHeader(tx_created_by_oldwallet)
	if err != nil {
		t.Fatalf("TX could not be deserialized. This needs to be fixed urgently as encrypted payment ID functionalyi is broken")
	}

	// the tx is sending payment to itself with encrypted payment
	tx.Parse_Extra()

	public_key := tx.Extra_map[transaction.TX_PUBLIC_KEY].(crypto.Key)

	payment_id := "0cbd6e050cf3b73c"

	// lets locate and decode payment id, see whether it matches with expected value
	epayid := tx.PaymentID_map[transaction.TX_EXTRA_NONCE_ENCRYPTED_PAYMENT_ID].([]byte)

	derivation := crypto.KeyDerivation(&public_key, &w.account.Keys.Viewkey_Secret)
	payid := EncryptDecryptPaymentID(derivation, public_key, epayid)

	t.Logf("epay id %x  decrypted %x  original payment ID %s ", epayid, payid, payment_id)

	if payment_id != fmt.Sprintf("%x", payid) {
		t.Fatalf("8 byte encrypted payment ID missing failed, Critical, encrypted payment Id failed")
	}
}

// this will  create the transaction and benchmark the verification times
// this also forces the ring size from 2 to 10
func benchmark_TX_Verification(b *testing.B, num_inputs uint32, num_outputs uint32, num_ring_size int) (tx *transaction.Transaction) {

	temp_db := filepath.Join(os.TempDir(), "dero_temporary_test_wallet.db")

	os.Remove(temp_db)

	w, err := Create_Encrypted_Wallet(temp_db, "QWER", *crypto.RandomScalar())
	if err != nil {
		b.Fatalf("Cannot create encrypted wallet, err %s", err)
	}

	defer os.Remove(temp_db) // cleanup after test
	//sender,_ := Generate_Keys_From_Random() // we have a single sender

	var receivers []*Account

	randomBytes := make([]byte, 4)

	rand.Read(randomBytes)
	random_inputs := 1 + (binary.LittleEndian.Uint32(randomBytes) % 20) //minimum 1 input is necessary
	rand.Read(randomBytes)
	random_outputs := 1 + (binary.LittleEndian.Uint32(randomBytes) % 20) //minimum 1 output is necessary

	random_inputs = num_inputs
	random_outputs = num_outputs

	txw := TX_Wallet_Data{WAmount: 4000000000000}
	txw.TXdata.Index_Global = 739
	txw.TXdata.Height = 730
	txw.WKey.Destination = crypto.HexToKey("dbdfd2a3e9da6911b0a3e37e8e448f2de2477f81760585c2f197736bac127e0f")
	txw.WKey.Mask = crypto.HexToKey("01e4e85ab0b5e30dd86b5356f0f6b4177738b9e6b32041c4e4781a2f26083101")
	txw.WKimage = crypto.HexToKey("d8fb3b4260aea6582400a5f48244ff3f7c4dc36420698e3decc5d28ba04733c2")
	txw.TXdata.InKey.Destination = crypto.HexToKey("ed0da9e74d240088a07909ea354b8d140b753642e25495e0931b4623b25ff523")
	txw.TXdata.InKey.Mask = crypto.HexToKey("dbddab6c6b3063074e7cfd1a7f83f184ad78e92c8ff25118c0ed4edc77015948")

	var outs []ringct.Output_info
	for i := uint32(0); i < random_outputs; i++ {
		r, _ := Generate_Keys_From_Random()
		receivers = append(receivers, r)

		out := ringct.Output_info{Public_Spend_Key: receivers[i].GetAddress().SpendKey,
			Public_View_Key: receivers[i].GetAddress().ViewKey}

		if i == 0 { // balance the outputs
			out.Amount = uint64(random_inputs) * txw.WAmount
		}
		outs = append(outs, out) // fill outs with random address
	}

	ring_size := uint64(num_ring_size)

	var ins []ringct.Input_info
	for i := uint32(0); i < random_inputs; i++ {

		ins = append(ins, ringct.Input_info{Amount: txw.WAmount, Key_image: crypto.Hash(txw.WKimage), Sk: txw.WKey, Index_Global: txw.TXdata.Index_Global})

		//now we must the ring members
		ins[i].Ring_Members = append(ins[i].Ring_Members, txw.TXdata.Index_Global)
		ins[i].Pubs = append(ins[i].Pubs, txw.TXdata.InKey)

		// lets add 5 ring members randomly
		for j := uint64(0); j < ring_size; j++ {
			ins[i].Ring_Members = append(ins[i].Ring_Members, txw.TXdata.Index_Global+j+1)
			ins[i].Pubs = append(ins[i].Pubs, ringct.CtKey{Destination: *crypto.RandomScalar(), Mask: *crypto.RandomScalar()})
		}
	}

	// 739th main net consumed output
	var payment_id []byte

	bulletproof := true

	tx = w.Create_TX_v2(ins, outs, 0, 0, payment_id, bulletproof)

	return tx

}

/*
func Benchmark_TX_Verification_inputs_10_outputs_2_mixin_7(b *testing.B){
	benchmark_TX_Verification(b,10,2,7)
}
func Benchmark_TX_Verification_inputs_10_outputs_4_mixin_7(b *testing.B){
	benchmark_TX_Verification(b,10,4,7)
}
func Benchmark_TX_Verification_inputs_10_outputs_7_mixin_7(b *testing.B){
	benchmark_TX_Verification(b,10,7,7)
}
func Benchmark_TX_Verification_inputs_10_outputs_9_mixin_7(b *testing.B){
	benchmark_TX_Verification(b,10,9,7)
}
func Benchmark_TX_Verification_inputs_10_outputs_11_mixin_7(b *testing.B){
	benchmark_TX_Verification(b,10,11,7)
}
*/

/*
func Benchmark_TX_Verification(b *testing.B){

	cpufile,err := os.Create("/tmp/cpuprofile.prof")
			if err != nil{

			}
			if err := pprof.StartCPUProfile(cpufile); err != nil {
            }
        	defer pprof.StopCPUProfile()

        	input := uint32(20)
        	output := uint32(2)
        	mixin := 7

				b.Run(fmt.Sprintf("in %d/ out %d/mixin %d", input, output,mixin), func(b *testing.B) {
					tx := benchmark_TX_Verification(b,input,output,mixin)
					b.Logf("tx size %d bytes    %d KB", len(tx.Serialize()), len(tx.Serialize())/1024)
	b.ResetTimer()
	for n := 0; n < b.N; n++ {
		if !tx.RctSignature.Verify() {
			b.Fatalf("TX ring signature verification failed")
		}
	}
		})



}
*/

// verify and confirm few parameters for the network
func Benchmark_TX_Verification(b *testing.B) {

	cpufile, err := os.Create("/tmp/cpuprofile.prof")
	if err != nil {

	}
	if err := pprof.StartCPUProfile(cpufile); err != nil {
	}
	defer pprof.StopCPUProfile()

	for input := uint32(10); input < 400; input += 50 {
		for output := uint32(1); output < 9; output += 2 {
			for mixin := 5; mixin < 15; mixin += 3 {
				b.Run(fmt.Sprintf("in %d/ out %d/mixin %d", input, output, mixin), func(b *testing.B) {
					benchmark_TX_Verification(b, input, output, mixin)
				})
			}
		}
	}
}

/*  specific testing if required
// inputs
func Benchmark_TX_Verification_inputs_10_outputs_2_mixin_8(b *testing.B){
	benchmark_TX_Verification(b,10,2,8)
}
*/