neoneo-go/pkg/wallet/account.go

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package wallet
import (
"github.com/CityOfZion/neo-go/pkg/crypto/keys"
"github.com/CityOfZion/neo-go/pkg/util"
)
// Account represents a NEO account. It holds the private and public key
// along with some metadata.
type Account struct {
// NEO private key.
privateKey *keys.PrivateKey
// NEO public key.
publicKey []byte
// Account import file.
wif string
// NEO public address.
Address string `json:"address"`
// Encrypted WIF of the account also known as the key.
EncryptedWIF string `json:"key"`
// Label is a label the user had made for this account.
Label string `json:"label"`
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// Contract is a Contract object which describes the details of the contract.
// This field can be null (for watch-only address).
Contract *Contract `json:"contract"`
// Indicates whether the account is locked by the user.
// the client shouldn't spend the funds in a locked account.
Locked bool `json:"lock"`
// Indicates whether the account is the default change account.
Default bool `json:"isDefault"`
}
// Contract represents a subset of the smartcontract to embed in the
// Account so it's NEP-6 compliant.
type Contract struct {
// Script hash of the contract deployed on the blockchain.
Script util.Uint160 `json:"script"`
// A list of parameters used deploying this contract.
Parameters []interface{} `json:"parameters"`
// Indicates whether the contract has been deployed to the blockchain.
Deployed bool `json:"deployed"`
}
// NewAccount creates a new Account with a random generated PrivateKey.
func NewAccount() (*Account, error) {
priv, err := keys.NewPrivateKey()
if err != nil {
return nil, err
}
return newAccountFromPrivateKey(priv), nil
}
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// DecryptAccount decrypts the encryptedWIF with the given passphrase and
// return the decrypted Account.
func DecryptAccount(encryptedWIF, passphrase string) (*Account, error) {
wif, err := keys.NEP2Decrypt(encryptedWIF, passphrase)
if err != nil {
return nil, err
}
return NewAccountFromWIF(wif)
}
// Encrypt encrypts the wallet's PrivateKey with the given passphrase
// under the NEP-2 standard.
func (a *Account) Encrypt(passphrase string) error {
wif, err := keys.NEP2Encrypt(a.privateKey, passphrase)
if err != nil {
return err
}
a.EncryptedWIF = wif
return nil
}
// NewAccountFromWIF creates a new Account from the given WIF.
func NewAccountFromWIF(wif string) (*Account, error) {
privKey, err := keys.NewPrivateKeyFromWIF(wif)
if err != nil {
return nil, err
}
return newAccountFromPrivateKey(privKey), nil
}
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// newAccountFromPrivateKey creates a wallet from the given PrivateKey.
func newAccountFromPrivateKey(p *keys.PrivateKey) *Account {
pubKey := p.PublicKey()
pubAddr := p.Address()
wif := p.WIF()
a := &Account{
publicKey: pubKey.Bytes(),
privateKey: p,
Address: pubAddr,
wif: wif,
}
return a
}