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author | Gustav Simonsson <gustav.simonsson@gmail.com> | 2015-01-25 09:07:20 +0800 |
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committer | Gustav Simonsson <gustav.simonsson@gmail.com> | 2015-01-26 11:30:17 +0800 |
commit | 512ffa2bf4308b44aa6f43f25238b375b58d7dbc (patch) | |
tree | 40cc0f2aa3eda21eb7039b128d27bdab94d883be /accounts/account_manager.go | |
parent | d792e95c214c8352e6b23b798101e90844eaa7a3 (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/account_manager.go')
-rw-r--r-- | accounts/account_manager.go | 99 |
1 files changed, 99 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 +} |