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authorGustav Simonsson <gustav.simonsson@gmail.com>2015-01-25 09:07:20 +0800
committerGustav Simonsson <gustav.simonsson@gmail.com>2015-01-26 11:30:17 +0800
commit512ffa2bf4308b44aa6f43f25238b375b58d7dbc (patch)
tree40cc0f2aa3eda21eb7039b128d27bdab94d883be /accounts
parentd792e95c214c8352e6b23b798101e90844eaa7a3 (diff)
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Add accounts package and refactor key stores
* Add initial UserAccount and AccountManager structs * Add NewAccount, Sign and Accounts functions * Refactor key stores to use key address as main identifier while keeping the UUID. * Use key address as file/dir names instead of UUID
Diffstat (limited to 'accounts')
-rw-r--r--accounts/account_manager.go99
-rw-r--r--accounts/accounts_test.go19
2 files changed, 118 insertions, 0 deletions
diff --git a/accounts/account_manager.go b/accounts/account_manager.go
new file mode 100644
index 000000000..b5a0c4f87
--- /dev/null
+++ b/accounts/account_manager.go
@@ -0,0 +1,99 @@
+/*
+ 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"
+ "github.com/ethereum/go-ethereum/crypto/secp256k1"
+)
+
+// TODO: better name for this struct?
+type UserAccount struct {
+ Addr []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(fromAddr []byte, keyAuth string, toSign []byte) (signature []byte, err error) {
+ key, err := am.keyStore.GetKey(fromAddr, keyAuth)
+ if err != nil {
+ return nil, err
+ }
+ privKey := crypto.FromECDSA(key.PrivateKey)
+ // TODO: what is second value?
+ signature, err = secp256k1.Sign(toSign, privKey)
+ return signature, err
+}
+
+func (am AccountManager) NewAccount(auth string) (*UserAccount, error) {
+ key, err := am.keyStore.GenerateNewKey(crand.Reader, auth)
+ if err != nil {
+ return nil, err
+ }
+ ua := &UserAccount{
+ Addr: 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() ([]UserAccount, error) {
+ addresses, err := am.keyStore.GetKeyAddresses()
+ if err != nil {
+ return nil, err
+ }
+
+ accounts := make([]UserAccount, len(addresses))
+
+ for i, addr := range addresses {
+ ua := &UserAccount{
+ Addr: addr,
+ }
+ accounts[i] = *ua
+ }
+ return accounts, err
+}
diff --git a/accounts/accounts_test.go b/accounts/accounts_test.go
new file mode 100644
index 000000000..381657718
--- /dev/null
+++ b/accounts/accounts_test.go
@@ -0,0 +1,19 @@
+package accounts
+
+import (
+ "github.com/ethereum/go-ethereum/crypto"
+ "testing"
+)
+
+func TestAccountManager(t *testing.T) {
+ ks := crypto.NewKeyStorePlain(crypto.DefaultDataDir())
+ am := NewAccountManager(ks)
+ pass := "" // not used but required by API
+ a1, err := am.NewAccount(pass)
+ toSign := make([]byte, 4, 4)
+ toSign = []byte{0, 1, 2, 3}
+ _, err = am.Sign(a1.Addr, pass, toSign)
+ if err != nil {
+ t.Fatal(err)
+ }
+}