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package ethutil
import (
"github.com/obscuren/secp256k1-go"
)
type KeyPair struct {
PrivateKey []byte
PublicKey []byte
// The associated account
account *StateObject
}
func GenerateNewKeyPair() (*KeyPair, error) {
_, prv := secp256k1.GenerateKeyPair()
return NewKeyPairFromSec(prv)
}
func NewKeyPairFromSec(seckey []byte) (*KeyPair, error) {
pubkey, err := secp256k1.GeneratePubKey(seckey)
if err != nil {
return nil, err
}
return &KeyPair{PrivateKey: seckey, PublicKey: pubkey}, nil
}
func NewKeyPairFromValue(val *Value) *KeyPair {
v, _ := NewKeyPairFromSec(val.Bytes())
return v
}
func (k *KeyPair) Address() []byte {
return Sha3Bin(k.PublicKey[1:])[12:]
}
func (k *KeyPair) RlpEncode() []byte {
return k.RlpValue().Encode()
}
func (k *KeyPair) RlpValue() *Value {
return NewValue(k.PrivateKey)
}
type KeyRing struct {
keys []*KeyPair
}
func (k *KeyRing) Add(pair *KeyPair) {
k.keys = append(k.keys, pair)
}
func (k *KeyRing) Get(i int) *KeyPair {
if len(k.keys) > i {
return k.keys[i]
}
return nil
}
func (k *KeyRing) Len() int {
return len(k.keys)
}
func (k *KeyRing) NewKeyPair(sec []byte) (*KeyPair, error) {
keyPair, err := NewKeyPairFromSec(sec)
if err != nil {
return nil, err
}
k.Add(keyPair)
Config.Db.Put([]byte("KeyRing"), k.RlpValue().Encode())
return keyPair, nil
}
func (k *KeyRing) Reset() {
Config.Db.Put([]byte("KeyRing"), nil)
k.keys = nil
}
func (k *KeyRing) RlpValue() *Value {
v := EmptyValue()
for _, keyPair := range k.keys {
v.Append(keyPair.RlpValue())
}
return v
}
// The public "singleton" keyring
var keyRing *KeyRing
func GetKeyRing() *KeyRing {
if keyRing == nil {
keyRing = &KeyRing{}
data, _ := Config.Db.Get([]byte("KeyRing"))
it := NewValueFromBytes(data).NewIterator()
for it.Next() {
v := it.Value()
key, err := NewKeyPairFromSec(v.Bytes())
if err != nil {
panic(err)
}
keyRing.Add(key)
}
}
return keyRing
}
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