neoneo-go/pkg/core/interop/crypto/ecdsa_test.go

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package crypto
import (
"encoding/binary"
"testing"
"github.com/nspcc-dev/neo-go/pkg/core/interop"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
"github.com/nspcc-dev/neo-go/pkg/vm"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func initCHECKMULTISIG(msg []byte, n int) ([]stackitem.Item, []stackitem.Item, map[string]*keys.PublicKey, error) {
var err error
keyMap := make(map[string]*keys.PublicKey)
pkeys := make([]*keys.PrivateKey, n)
pubs := make([]stackitem.Item, n)
for i := range pubs {
pkeys[i], err = keys.NewPrivateKey()
if err != nil {
return nil, nil, nil, err
}
pk := pkeys[i].PublicKey()
data := pk.Bytes()
pubs[i] = stackitem.NewByteArray(data)
keyMap[string(data)] = pk
}
sigs := make([]stackitem.Item, n)
for i := range sigs {
sig := pkeys[i].Sign(msg)
sigs[i] = stackitem.NewByteArray(sig)
}
return pubs, sigs, keyMap, nil
}
func subSlice(arr []stackitem.Item, indices []int) []stackitem.Item {
if indices == nil {
return arr
}
result := make([]stackitem.Item, len(indices))
for i, j := range indices {
result[i] = arr[j]
}
return result
}
func initCHECKMULTISIGVM(t *testing.T, n int, ik, is []int) *vm.VM {
buf := make([]byte, 5)
buf[0] = byte(opcode.SYSCALL)
binary.LittleEndian.PutUint32(buf[1:], ecdsaSecp256r1CheckMultisigID)
v := vm.New()
v.GasLimit = -1
ic := &interop.Context{Trigger: trigger.Verification}
v.RegisterInteropGetter(GetInterop(ic))
v.LoadScript(buf)
msg := []byte("NEO - An Open Network For Smart Economy")
pubs, sigs, _, err := initCHECKMULTISIG(msg, n)
require.NoError(t, err)
pubs = subSlice(pubs, ik)
sigs = subSlice(sigs, is)
v.Estack().PushVal(sigs)
v.Estack().PushVal(pubs)
v.Estack().PushVal(msg)
return v
}
func testCHECKMULTISIGGood(t *testing.T, n int, is []int) {
v := initCHECKMULTISIGVM(t, n, nil, is)
require.NoError(t, v.Run())
assert.Equal(t, 1, v.Estack().Len())
assert.True(t, v.Estack().Pop().Bool())
}
func TestCHECKMULTISIGGood(t *testing.T) {
t.Run("3_1", func(t *testing.T) { testCHECKMULTISIGGood(t, 3, []int{1}) })
t.Run("2_2", func(t *testing.T) { testCHECKMULTISIGGood(t, 2, []int{0, 1}) })
t.Run("3_3", func(t *testing.T) { testCHECKMULTISIGGood(t, 3, []int{0, 1, 2}) })
t.Run("3_2", func(t *testing.T) { testCHECKMULTISIGGood(t, 3, []int{0, 2}) })
t.Run("4_2", func(t *testing.T) { testCHECKMULTISIGGood(t, 4, []int{0, 2}) })
t.Run("10_7", func(t *testing.T) { testCHECKMULTISIGGood(t, 10, []int{2, 3, 4, 5, 6, 8, 9}) })
t.Run("12_9", func(t *testing.T) { testCHECKMULTISIGGood(t, 12, []int{0, 1, 4, 5, 6, 7, 8, 9}) })
}
func testCHECKMULTISIGBad(t *testing.T, isErr bool, n int, ik, is []int) {
v := initCHECKMULTISIGVM(t, n, ik, is)
if isErr {
require.Error(t, v.Run())
return
}
require.NoError(t, v.Run())
assert.Equal(t, 1, v.Estack().Len())
assert.False(t, v.Estack().Pop().Bool())
}
func TestCHECKMULTISIGBad(t *testing.T) {
t.Run("1_1 wrong signature", func(t *testing.T) { testCHECKMULTISIGBad(t, false, 2, []int{0}, []int{1}) })
t.Run("3_2 wrong order", func(t *testing.T) { testCHECKMULTISIGBad(t, false, 3, []int{0, 2}, []int{2, 0}) })
t.Run("3_2 duplicate sig", func(t *testing.T) { testCHECKMULTISIGBad(t, false, 3, nil, []int{0, 0}) })
t.Run("1_2 too many signatures", func(t *testing.T) { testCHECKMULTISIGBad(t, true, 2, []int{0}, []int{0, 1}) })
t.Run("gas limit exceeded", func(t *testing.T) {
v := initCHECKMULTISIGVM(t, 1, []int{0}, []int{0})
v.GasLimit = ECDSAVerifyPrice - 1
require.Error(t, v.Run())
})
}