accounts

package
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 Go to latest Published: Jan 24, 2019 License: GPL-3.0 Imports: 32 Imported by: 0

Documentation

Overview

Package accounts implements encrypted storage of secp256k1 private keys.

Keys are stored as encrypted JSON files according to the Web3 Secret Storage specification. See https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition for more information.

Index

Constants

View Source 
const (
	// n,r,p = 2^18, 8, 1 uses 256MB memory and approx 1s CPU time on a modern CPU.
	StandardScryptN = 1 << 18
	StandardScryptP = 1

	// n,r,p = 2^12, 8, 6 uses 4MB memory and approx 100ms CPU time on a modern CPU.
	LightScryptN = 1 << 12
	LightScryptP = 6
)

Variables

View Source 
var (
	ErrLocked  = errors.New("account is locked")
	ErrNoMatch = errors.New("no key for given address or file")
	ErrDecrypt = errors.New("could not decrypt key with given passphrase")
)
View Source 
var ErrCacheDBNoUpdateStamp = errors.New("cachedb has no updated timestamp; expected for newborn dbs.")

Functions

func Web3PrivateKey 

func Web3PrivateKey(web3JSON []byte, secret string) (*ecdsa.PrivateKey, error)

Web3PrivateKey decrypts the record with secret and returns the private key.

Types

type Account 

type Account struct {
	Address      common.Address // Ethereum account address derived from the key
	EncryptedKey string         // web3JSON format

	// File contains the key file name.
	// When Acccount is used as an argument to select a key, File can be left blank to
	// select just by address or set to the basename or absolute path of a file in the key
	// directory. Accounts returned by Manager will always contain an absolute path.
	File string
}

Account represents a stored key. When used as an argument, it selects a unique key file to act on.

func (*Account) MarshalJSON 

func (acc *Account) MarshalJSON() ([]byte, error)

func (*Account) UnmarshalJSON 

func (acc *Account) UnmarshalJSON(raw []byte) error

type AccountJSON 

type AccountJSON struct {
	Address      string `json:"address"`
	EncryptedKey string `json:"key"`
	File         string `json:"file"`
}

AccountJSON is an auxiliary between Account and EasyMarshal'd structs.

func (AccountJSON) MarshalEasyJSON 

func (v AccountJSON) MarshalEasyJSON(w *jwriter.Writer)

MarshalEasyJSON supports easyjson.Marshaler interface

func (AccountJSON) MarshalJSON 

func (v AccountJSON) MarshalJSON() ([]byte, error)

MarshalJSON supports json.Marshaler interface

func (*AccountJSON) UnmarshalEasyJSON 

func (v *AccountJSON) UnmarshalEasyJSON(l *jlexer.Lexer)

UnmarshalEasyJSON supports easyjson.Unmarshaler interface

func (*AccountJSON) UnmarshalJSON 

func (v *AccountJSON) UnmarshalJSON(data []byte) error

UnmarshalJSON supports json.Unmarshaler interface

type AmbiguousAddrError 

type AmbiguousAddrError struct {
	Addr    common.Address
	Matches []Account
}

AmbiguousAddrError is returned when attempting to unlock an address for which more than one file exists.

func (*AmbiguousAddrError) Error 

func (err *AmbiguousAddrError) Error() string

type Manager 

type Manager struct {
	// contains filtered or unexported fields
}

Manager manages a key storage directory on disk.

func NewManager 

func NewManager(keydir string, scryptN, scryptP int, wantCacheDB bool) (*Manager, error)

NewManager creates a manager for the given directory. keydir is by default /Users/ia/Library/EthereumClassic/mainnet/keystore

func (*Manager) AccountByIndex 

func (am *Manager) AccountByIndex(i int) (Account, error)

AccountByIndex returns the ith account.

func (*Manager) Accounts 

func (am *Manager) Accounts() []Account

Accounts returns all key files present in the directory.

func (*Manager) BuildIndexDB 

func (am *Manager) BuildIndexDB() []error

func (*Manager) DeleteAccount 

func (am *Manager) DeleteAccount(a Account, passphrase string) error

DeleteAccount deletes the key matched by account if the passphrase is correct. If a contains no filename, the address must match a unique key.

func (*Manager) Export 

func (am *Manager) Export(a Account, passphrase, newPassphrase string) (keyJSON []byte, err error)

Export exports as a JSON key, encrypted with newPassphrase.

func (*Manager) HasAddress 

func (am *Manager) HasAddress(addr common.Address) bool

HasAddress reports whether a key with the given address is present.

func (*Manager) Import 

func (am *Manager) Import(keyJSON []byte, passphrase, newPassphrase string) (Account, error)

Import stores the given encrypted JSON key into the key directory.

func (*Manager) ImportECDSA 

func (am *Manager) ImportECDSA(priv *ecdsa.PrivateKey, passphrase string) (Account, error)

ImportECDSA stores the given key into the key directory, encrypting it with the passphrase.

func (*Manager) ImportPreSaleKey 

func (am *Manager) ImportPreSaleKey(keyJSON []byte, passphrase string) (Account, error)

ImportPreSaleKey decrypts the given Ethereum presale wallet and stores a key file in the key directory. The key file is encrypted with the same passphrase.

func (*Manager) Lock 

func (am *Manager) Lock(addr common.Address) error

Lock removes the private key with the given address from memory.

func (*Manager) NewAccount 

func (am *Manager) NewAccount(passphrase string) (Account, error)

NewAccount generates a new key and stores it into the key directory, encrypting it with the passphrase.

func (*Manager) Sign 

func (am *Manager) Sign(addr common.Address, hash []byte) (signature []byte, err error)

Sign signs hash with an unlocked private key matching the given address.

func (*Manager) SignWithPassphrase 

func (am *Manager) SignWithPassphrase(addr common.Address, passphrase string, hash []byte) (signature []byte, err error)

SignWithPassphrase signs hash if the private key matching the given address can be decrypted with the given passphrase.

func (*Manager) TimedUnlock 

func (am *Manager) TimedUnlock(a Account, passphrase string, timeout time.Duration) error

TimedUnlock unlocks the given account with the passphrase. The account stays unlocked for the duration of timeout. A timeout of 0 unlocks the account until the program exits. The account must match a unique key file.

If the account address is already unlocked for a duration, TimedUnlock extends or shortens the active unlock timeout. If the address was previously unlocked indefinitely the timeout is not altered.

func (*Manager) Unlock 

func (am *Manager) Unlock(a Account, passphrase string) error

Unlock unlocks the given account indefinitely.

func (*Manager) Update 

func (am *Manager) Update(a Account, passphrase, newPassphrase string) error

Update changes the passphrase of an existing account.

Notes

Bugs

  • Windows won't allow updates to a keyfile when it is being read.

Source Files

View all Source files

Directories

Path Synopsis
abi
Package abi implements the Ethereum ABI (Application Binary Interface).
 Package abi implements the Ethereum ABI (Application Binary Interface).
bind
Package bind generates Ethereum contract Go bindings.
 Package bind generates Ethereum contract Go bindings.
bind/backends

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