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handle_crypto.go
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/
handle_crypto.go
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package qx
import (
"encoding/hex"
"fmt"
"github.com/Qitmeer/qitmeer/common/encode/base58"
"github.com/Qitmeer/qitmeer/common/hash"
"github.com/Qitmeer/qitmeer/crypto/bip32"
"github.com/Qitmeer/qitmeer/crypto/bip39"
"github.com/Qitmeer/qitmeer/crypto/ecc"
"github.com/Qitmeer/qitmeer/crypto/seed"
"github.com/Qitmeer/qitmeer/wallet"
"strconv"
)
func NewEntropy(size uint) (string, error) {
s, err := seed.GenerateSeed(uint16(size))
if err != nil {
return "", err
}
return fmt.Sprintf("%x", s), nil
}
func EcNew(curve string, entropyStr string) (string, error) {
entropy, err := hex.DecodeString(entropyStr)
if err != nil {
return "", err
}
switch curve {
case "secp256k1":
masterKey, err := bip32.NewMasterKey(entropy)
if err != nil {
return "", err
}
return fmt.Sprintf("%x", masterKey.Key[:]), nil
default:
return "", fmt.Errorf("unknown curve : %s", curve)
}
}
func EcPrivateKeyToEcPublicKey(uncompressed bool, privateKeyStr string) (string, error) {
data, err := hex.DecodeString(privateKeyStr)
if err != nil {
return "", err
}
_, pubKey := ecc.Secp256k1.PrivKeyFromBytes(data)
var key []byte
if uncompressed {
key = pubKey.SerializeUncompressed()
} else {
key = pubKey.SerializeCompressed()
}
return fmt.Sprintf("%x", key[:]), nil
}
func HdNewMasterPrivateKey(version bip32.Bip32Version, entropyStr string) {
entropy, err := hex.DecodeString(entropyStr)
if err != nil {
ErrExit(err)
}
masterKey, err := bip32.NewMasterKey2(entropy, version)
if err != nil {
ErrExit(err)
}
fmt.Printf("%s\n", masterKey)
}
func HdPrivateKeyToHdPublicKey(version bip32.Bip32Version, privateKeyStr string) {
data := base58.Decode([]byte(privateKeyStr))
masterKey, err := bip32.Deserialize2(data, version)
if err != nil {
ErrExit(err)
}
if !masterKey.IsPrivate {
ErrExit(fmt.Errorf("%s is not a HD (BIP32) private key", privateKeyStr))
}
pubKey := masterKey.PublicKey()
fmt.Printf("%s\n", pubKey)
}
func HdKeyToEcKey(version bip32.Bip32Version, keyStr string) {
data := base58.Decode([]byte(keyStr))
key, err := bip32.Deserialize2(data, version)
if err != nil {
ErrExit(err)
}
if key.IsPrivate {
fmt.Printf("%x\n", key.Key[:])
} else {
fmt.Printf("%x\n", key.PublicKey().Key[:])
}
}
const bip32_ByteSize = 78 + 4
// The Serialization format of BIP32 Key
// https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#serialization-format
// 4 bytes: version bytes
// mainnet: 0x0488B21E public, 0x0488ADE4 private; testnet: 0x043587CF public, 0x04358394 private
// 1 byte : depth: 0x00 for master nodes, 0x01 for level-1 derived keys, ....
// 4 bytes: the fingerprint of the parent's key (0x00000000 if master key)
// 4 bytes: child number. This is ser32(i) for i in xi = xpar/i, with xi the key being serialized. (0x00000000 if master key)
// index ≥ 0x80000000 to hardened keys
// 32 bytes: the chain code
// 33 bytes: the public key or private key data (serP(K) for public keys, 0x00 || ser256(k) for private keys)
// 4 bytes: checksum
func HdDecode(keyStr string) {
data := base58.Decode([]byte(keyStr))
if len(data) != bip32_ByteSize {
ErrExit(fmt.Errorf("invalid bip32 key size (%d), the size hould be %d", len(data), bip32_ByteSize))
}
fmt.Printf(" version : %x (%s)\n", data[:4], GetBip32NetworkInfo(data[:4]))
fmt.Printf(" depth : %x\n", data[4:4+1])
fmt.Printf(" parent fp : %x\n", data[5:5+4])
childNumber, err := strconv.ParseInt(fmt.Sprintf("%x", data[9:9+4]), 16, 64)
if err != nil {
ErrExit(err)
}
hardened := childNumber >= 0x80000000
fmt.Printf(" hardened : %v\n", hardened)
if hardened {
childNumber -= 0x80000000
}
fmt.Printf(" child num : %d (%x)\n", childNumber, data[9:9+4])
fmt.Printf("chain code : %x\n", data[13:13+32])
if keyStr[1:4] == "pub" {
// the pub key should be 33 bytes,
// the first byte 0x02 means y is even,
// the first byte 0x03 means y is odd
var oldOrEven string
switch data[45] {
case 0x02:
oldOrEven = "even"
case 0x03:
oldOrEven = "odd"
default:
ErrExit(fmt.Errorf("invaid pub key [%x][%x]", data[45:46], data[46:46+32]))
}
fmt.Printf(" pub key : [%x][%x] y=%s\n", data[45:46], data[46:46+32], oldOrEven)
} else {
//the prv key should be 32 bytes, the first byte always 0x00
fmt.Printf(" prv key : [%x][%x]\n", data[45:46], data[46:46+32])
}
fmt.Printf(" checksum : %x\n", data[78:78+4])
fmt.Printf(" hex : %x\n", data[:78+4])
fmt.Printf(" base58 : %s\n", keyStr)
}
func HdDerive(hard bool, index uint32, path wallet.DerivationPath, version bip32.Bip32Version, key string) {
data := base58.Decode([]byte(key))
if len(data) != bip32_ByteSize {
ErrExit(fmt.Errorf("invalid bip32 key size (%d), the size hould be %d", len(data), bip32_ByteSize))
}
mKey, err := bip32.Deserialize2(data, version)
if err != nil {
ErrExit(err)
}
var childKey *bip32.Key
if path.String() != "m" {
var ck = mKey
for _, i := range path {
ck, err = ck.NewChildKey(i)
if err != nil {
ErrExit(err)
}
}
childKey = ck
} else {
if hard {
childKey, err = mKey.NewChildKey(bip32.FirstHardenedChild + index)
} else {
childKey, err = mKey.NewChildKey(index)
}
if err != nil {
ErrExit(err)
}
}
fmt.Printf("%s\n", childKey)
}
func MnemonicNew(entropyStr string) {
entropy, err := hex.DecodeString(entropyStr)
if err != nil {
ErrExit(err)
}
mnemonic, err := bip39.NewMnemonic(entropy)
if err != nil {
ErrExit(err)
}
fmt.Printf("%s\n", mnemonic)
}
func MnemonicToEntropy(mnemonicStr string) {
entropy, err := bip39.EntropyFromMnemonic(mnemonicStr)
if err != nil {
ErrExit(err)
}
fmt.Printf("%x\n", entropy)
}
func MnemonicToSeed(passphrase string, mnemonicStr string) {
seed, err := bip39.NewSeedWithErrorChecking(mnemonicStr, passphrase)
if err != nil {
ErrExit(err)
}
fmt.Printf("%x\n", seed)
}
func EcNewSTDO(curve string, entropyStr string) {
pk, err := EcNew(curve, entropyStr)
if err != nil {
ErrExit(err)
}
fmt.Printf("%s\n", pk)
}
func EcPrivateKeyToEcPublicKeySTDO(uncompressed bool, privateKeyStr string) {
key, err := EcPrivateKeyToEcPublicKey(uncompressed, privateKeyStr)
if err != nil {
ErrExit(err)
}
fmt.Printf("%s\n", key)
}
func EcPrivateKeyToWif(uncompressed bool, privateKeyStr string) {
if encoded, err := EncodeWIF(uncompressed, privateKeyStr); err != nil {
ErrExit(err)
} else {
fmt.Printf("%s\n", encoded)
}
}
func EncodeWIF(uncompressed bool, privateKeyStr string) (string, error) {
data, err := hex.DecodeString(privateKeyStr)
if err != nil {
return "", err
}
privkey, _ := ecc.Secp256k1.PrivKeyFromBytes(data)
var key []byte
if uncompressed {
key = privkey.Serialize()
} else {
key = privkey.Serialize()
key = append(key, []byte{0x01}...)
}
cksumfunc := base58.DoubleHashChecksumFunc(hash.GetHasher(hash.SHA256), 4)
var encoded []byte
encoded, err = base58.CheckEncode(key, []byte{0x80}, 4, cksumfunc)
if err != nil {
return "",err
} else {
return string(encoded), nil
}
}
func WifToEcPrivateKey(wif string) {
decoded, _, err := DecodeWIF(wif)
if err != nil {
ErrExit(err)
}
fmt.Printf("%x\n", decoded)
}
func DecodeWIF(wif string) ([]byte, bool, error) {
cksumfunc := base58.DoubleHashChecksumFunc(hash.GetHasher(hash.SHA256), 4)
decoded, version, err := base58.CheckDecode([]byte(wif), 1, 4, cksumfunc)
compressed := false
if err != nil {
return nil, compressed, err
}
if len(version) != 1 && version[0] != 0x80 {
return nil, compressed, fmt.Errorf("incorrect wif version %x, should be 0x80", version)
}
if len(decoded) == 32 {
return decoded[:], compressed, nil
} else if len(decoded) == 33 && decoded[32] == 0x01 {
compressed = true
return decoded[:32], compressed, nil
} else {
return nil, compressed, fmt.Errorf("incorrect wif length")
}
}
func WifToEcPubkey(uncompressed bool, wif string) {
decoded, _, err := DecodeWIF(wif)
if err != nil {
ErrExit(err)
}
_, pubKey := ecc.Secp256k1.PrivKeyFromBytes(decoded)
var key []byte
if uncompressed {
key = pubKey.SerializeUncompressed()
} else {
key = pubKey.SerializeCompressed()
}
fmt.Printf("%x\n", key[:])
}