neo-go/internal/testchain/address.go

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package testchain
import (
"testing"
"time"
"github.com/nspcc-dev/neo-go/pkg/core/block"
"github.com/nspcc-dev/neo-go/pkg/core/blockchainer"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
"github.com/nspcc-dev/neo-go/pkg/io"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/emit"
"github.com/stretchr/testify/require"
)
// privNetKeys is a list of unencrypted WIFs sorted by public key.
var privNetKeys = []string{
"KzfPUYDC9n2yf4fK5ro4C8KMcdeXtFuEnStycbZgX3GomiUsvX6W",
"KzgWE3u3EDp13XPXXuTKZxeJ3Gi8Bsm8f9ijY3ZsCKKRvZUo1Cdn",
"KxyjQ8eUa4FHt3Gvioyt1Wz29cTUrE4eTqX3yFSk1YFCsPL8uNsY",
"L2oEXKRAAMiPEZukwR5ho2S6SMeQLhcK9mF71ZnF7GvT8dU4Kkgz",
// Provide 2 committee extra members so that the committee address differs from
// the validators one.
"L1Tr1iq5oz1jaFaMXP21sHDkJYDDkuLtpvQ4wRf1cjKvJYvnvpAb",
"Kz6XTUrExy78q8f4MjDHnwz8fYYyUE8iPXwPRAkHa3qN2JcHYm7e",
}
// ValidatorsCount returns the number of validators in the testchain.
const ValidatorsCount = 4
var (
// ids maps validators order by public key sorting to validators ID.
// That is the order of the validator in the StandByValidators list.
ids = []int{1, 3, 0, 2, 4, 5}
// orders maps validators id to its order by public key sorting.
orders = []int{2, 0, 3, 1, 4, 5}
)
// Size returns testchain initial validators amount.
func Size() int {
return ValidatorsCount
}
// CommitteeSize returns testchain committee size.
func CommitteeSize() int {
return len(privNetKeys)
}
// IDToOrder returns node's order in privnet.
func IDToOrder(id int) int {
return orders[id]
}
// WIF returns the unencrypted wif of the specified validator.
func WIF(i int) string {
return privNetKeys[i]
}
// PrivateKey returns the private key of node #i.
func PrivateKey(i int) *keys.PrivateKey {
wif := WIF(i)
priv, err := keys.NewPrivateKeyFromWIF(wif)
if err != nil {
panic(err)
}
return priv
}
// PrivateKeyByID returns private keys of a node with the specified id.
func PrivateKeyByID(id int) *keys.PrivateKey {
return PrivateKey(IDToOrder(id))
}
// MultisigVerificationScript returns script hash of the consensus multisig address.
func MultisigVerificationScript() []byte {
var pubs keys.PublicKeys
for i := range privNetKeys[:ValidatorsCount] {
priv := PrivateKey(ids[i])
pubs = append(pubs, priv.PublicKey())
}
script, err := smartcontract.CreateDefaultMultiSigRedeemScript(pubs)
if err != nil {
panic(err)
}
return script
}
// MultisigScriptHash returns consensus address as Uint160.
func MultisigScriptHash() util.Uint160 {
return hash.Hash160(MultisigVerificationScript())
}
// MultisigAddress return consensus address as string.
func MultisigAddress() string {
return address.Uint160ToString(MultisigScriptHash())
}
// CommitteeVerificationScript returns script hash of the committee multisig address.
func CommitteeVerificationScript() []byte {
var pubs keys.PublicKeys
for i := range privNetKeys {
priv := PrivateKey(ids[i])
pubs = append(pubs, priv.PublicKey())
}
script, err := smartcontract.CreateMajorityMultiSigRedeemScript(pubs)
if err != nil {
panic(err)
}
return script
}
// CommitteeScriptHash returns committee address as Uint160.
func CommitteeScriptHash() util.Uint160 {
return hash.Hash160(CommitteeVerificationScript())
}
// CommitteeAddress return committee address as string.
func CommitteeAddress() string {
return address.Uint160ToString(CommitteeScriptHash())
}
// Sign signs data by all consensus nodes and returns invocation script.
func Sign(h hash.Hashable) []byte {
buf := io.NewBufBinWriter()
for i := 0; i < 3; i++ {
pKey := PrivateKey(i)
sig := pKey.SignHashable(uint32(Network()), h)
if len(sig) != 64 {
panic("wrong signature length")
}
emit.Bytes(buf.BinWriter, sig)
}
return buf.Bytes()
}
// SignCommittee signs data by a majority of committee members.
func SignCommittee(h hash.Hashable) []byte {
buf := io.NewBufBinWriter()
for i := 0; i < CommitteeSize()/2+1; i++ {
pKey := PrivateKey(i)
sig := pKey.SignHashable(uint32(Network()), h)
if len(sig) != 64 {
panic("wrong signature length")
}
emit.Bytes(buf.BinWriter, sig)
}
return buf.Bytes()
}
// NewBlock creates a new block for the given blockchain with the given offset
// (usually, 1), primary node index and transactions.
func NewBlock(t *testing.T, bc blockchainer.Blockchainer, offset uint32, primary uint32, txs ...*transaction.Transaction) *block.Block {
witness := transaction.Witness{VerificationScript: MultisigVerificationScript()}
height := bc.BlockHeight()
h := bc.GetHeaderHash(int(height))
hdr, err := bc.GetHeader(h)
require.NoError(t, err)
b := &block.Block{
2021-03-01 13:44:47 +00:00
Header: block.Header{
PrevHash: hdr.Hash(),
Timestamp: (uint64(time.Now().UTC().Unix()) + uint64(hdr.Index)) * 1000,
Index: hdr.Index + offset,
2021-03-01 12:20:27 +00:00
PrimaryIndex: byte(primary),
NextConsensus: witness.ScriptHash(),
Script: witness,
},
Transactions: txs,
}
b.RebuildMerkleRoot()
b.Script.InvocationScript = Sign(b)
return b
}