Merge branch 'release/0.9.0'

1 files changed, 95 insertions, 0 deletions

diff --git a/accounts/account_manager.go b/accounts/account_manager.go
new file mode 100644
index 000000000..da0bd8900
--- /dev/null
+++ b/accounts/account_manager.go
@@ -0,0 +1,95 @@
+/*
+	This file is part of go-ethereum
+
+	go-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Lesser General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	go-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU Lesser General Public License
+	along with go-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @authors
+ * 	Gustav Simonsson <gustav.simonsson@gmail.com>
+ * @date 2015
+ *
+ */
+/*
+
+This abstracts part of a user's interaction with an account she controls.
+It's not an abstraction of core Ethereum accounts data type / logic -
+for that see the core processing code of blocks / txs.
+
+Currently this is pretty much a passthrough to the KeyStore2 interface,
+and accounts persistence is derived from stored keys' addresses
+
+*/
+package accounts
+
+import (
+	crand "crypto/rand"
+	"github.com/ethereum/go-ethereum/crypto"
+)
+
+// TODO: better name for this struct?
+type Account struct {
+	Address []byte
+}
+
+type AccountManager struct {
+	keyStore crypto.KeyStore2
+}
+
+// TODO: get key by addr - modify KeyStore2 GetKey to work with addr
+
+// TODO: pass through passphrase for APIs which require access to private key?
+func NewAccountManager(keyStore crypto.KeyStore2) AccountManager {
+	am := &AccountManager{
+		keyStore: keyStore,
+	}
+	return *am
+}
+
+func (am *AccountManager) Sign(fromAccount *Account, keyAuth string, toSign []byte) (signature []byte, err error) {
+	key, err := am.keyStore.GetKey(fromAccount.Address, keyAuth)
+	if err != nil {
+		return nil, err
+	}
+	signature, err = crypto.Sign(toSign, key.PrivateKey)
+	return signature, err
+}
+
+func (am AccountManager) NewAccount(auth string) (*Account, error) {
+	key, err := am.keyStore.GenerateNewKey(crand.Reader, auth)
+	if err != nil {
+		return nil, err
+	}
+	ua := &Account{
+		Address: key.Address,
+	}
+	return ua, err
+}
+
+// set of accounts == set of keys in given key store
+// TODO: do we need persistence of accounts as well?
+func (am *AccountManager) Accounts() ([]Account, error) {
+	addresses, err := am.keyStore.GetKeyAddresses()
+	if err != nil {
+		return nil, err
+	}
+
+	accounts := make([]Account, len(addresses))
+
+	for i, addr := range addresses {
+		accounts[i] = Account{
+			Address: addr,
+		}
+	}
+	return accounts, err
+}