From fd9da72536b73351bbcdc1e9dbbbb8c0e4bfb21b Mon Sep 17 00:00:00 2001
From: obscuren <geffobscura@gmail.com>
Date: Fri, 31 Oct 2014 12:37:43 +0100
Subject: ethcrypto => crypto

---
 crypto/keypair.go | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 crypto/keypair.go

(limited to 'crypto/keypair.go')

diff --git a/crypto/keypair.go b/crypto/keypair.go
new file mode 100644
index 000000000..d02875ded
--- /dev/null
+++ b/crypto/keypair.go
@@ -0,0 +1,58 @@
+package crypto
+
+import (
+	"strings"
+
+	"github.com/ethereum/go-ethereum/ethutil"
+	"github.com/obscuren/secp256k1-go"
+)
+
+type KeyPair struct {
+	PrivateKey []byte
+	PublicKey  []byte
+	address    []byte
+	mnemonic   string
+	// The associated account
+	// account *StateObject
+}
+
+func GenerateNewKeyPair() *KeyPair {
+	_, prv := secp256k1.GenerateKeyPair()
+	keyPair, _ := NewKeyPairFromSec(prv) // swallow error, this one cannot err
+	return keyPair
+}
+
+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 (k *KeyPair) Address() []byte {
+	if k.address == nil {
+		k.address = Sha3(k.PublicKey[1:])[12:]
+	}
+	return k.address
+}
+
+func (k *KeyPair) Mnemonic() string {
+	if k.mnemonic == "" {
+		k.mnemonic = strings.Join(MnemonicEncode(ethutil.Bytes2Hex(k.PrivateKey)), " ")
+	}
+	return k.mnemonic
+}
+
+func (k *KeyPair) AsStrings() (string, string, string, string) {
+	return k.Mnemonic(), ethutil.Bytes2Hex(k.Address()), ethutil.Bytes2Hex(k.PrivateKey), ethutil.Bytes2Hex(k.PublicKey)
+}
+
+func (k *KeyPair) RlpEncode() []byte {
+	return k.RlpValue().Encode()
+}
+
+func (k *KeyPair) RlpValue() *ethutil.Value {
+	return ethutil.NewValue(k.PrivateKey)
+}
-- 
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