keystore

package
v2.1.6-beta.3+incompat... Latest Latest
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 Go to latest Published: Sep 18, 2020 License: GPL-3.0 Imports: 38 Imported by: 32

Documentation

Overview

Package keystore 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 (

	// StandardScryptN is the N parameter of Scrypt encryption algorithm, using 256MB
	// memory and taking approximately 1s CPU time on a modern processor.
	StandardScryptN = 1 << 18

	// StandardScryptP is the P parameter of Scrypt encryption algorithm, using 256MB
	// memory and taking approximately 1s CPU time on a modern processor.
	StandardScryptP = 1

	// LightScryptN is the N parameter of Scrypt encryption algorithm, using 4MB
	// memory and taking approximately 100ms CPU time on a modern processor.
	LightScryptN = 1 << 12

	// LightScryptP is the P parameter of Scrypt encryption algorithm, using 4MB
	// memory and taking approximately 100ms CPU time on a modern processor.
	LightScryptP = 6
)
View Source 
const (
	AwsKMSCiphertextFileExt = "-cipher"
)

Minimum amount of time between cache reloads. This limit applies if the platform does not support change notifications. It also applies if the keystore directory does not exist yet, the code will attempt to create a watcher at most this often.

Variables

View Source 
var (
	ErrLocked         = accounts.NewAuthNeededError("password or unlock")
	ErrNoMatch        = errors.New("no key for given address or file")
	ErrDecrypt        = errors.New("could not decrypt key with given passphrase")
	ErrInvalidKmsInfo = errors.New("invalid AWS KMS info")
)
View Source 
var (
	ErrWAddressFieldNotExist = errors.New("It seems that this account doesn't include a valid wanchain address field, please update your keyfile version")
	ErrWAddressInvalid       = errors.New("invalid wanchain address")
	ErrInvalidAccountKey     = errors.New("invalid account key")
	ErrInvalidPrivateKey     = errors.New("invalid private key")
)
View Source 
var KeyStoreScheme = "keystore"

KeyStoreScheme is the protocol scheme prefixing account and wallet URLs.

View Source 
var KeyStoreType = reflect.TypeOf(&KeyStore{})

KeyStoreType is the reflect type of a keystore backend.

Functions

func ECDSAPKCompression 

func ECDSAPKCompression(p *ecdsa.PublicKey) []byte

ECDSAPKCompression serializes a public key in a 33-byte compressed format from btcec

func EncryptKey 

func EncryptKey(key *Key, auth string, scryptN, scryptP int) ([]byte, error)

EncryptKey encrypts a key using the specified scrypt parameters into a json blob that can be decrypted later on.

func EncryptOnePrivateKey 

func EncryptOnePrivateKey(privateKey *ecdsa.PrivateKey, auth string, scryptN, scryptP int) (*cryptoJSON, error)

EncryptOnePrivateKey encrypts a key using the specified scrypt parameters into one field of a json blob that can be decrypted later on.

func GeneratePKPairFromWAddress 

func GeneratePKPairFromWAddress(w []byte) (*ecdsa.PublicKey, *ecdsa.PublicKey, error)

GeneratePKPairFromWAddress represents the keystore to retrieve public key-pair from given WAddress

func GenerateWaddressFromPK 

func GenerateWaddressFromPK(A *ecdsa.PublicKey, B *ecdsa.PublicKey) *common.WAddress

func LoadECDSAPair 

func LoadECDSAPair(file string) (*ecdsa.PrivateKey, *ecdsa.PrivateKey, error)

LoadECDSAPair loads a secp256k1 private key pair from the given file

func WaddrFromUncompressedRawBytes 

func WaddrFromUncompressedRawBytes(raw []byte) (*common.WAddress, error)

func WaddrToUncompressedRawBytes 

func WaddrToUncompressedRawBytes(waddr []byte) ([]byte, error)

Types

type AmbiguousAddrError 

type AmbiguousAddrError struct {
	Addr    common.Address
	Matches []accounts.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 AwsKmsInfo 

type AwsKmsInfo struct {
	AKID      string
	SecretKey string
	Region    string
}

type Key 

type Key struct {
	Id uuid.UUID // Version 4 "random" for unique id not derived from key data
	// to simplify lookups we also store the address
	Address common.Address
	// we only store privkey as pubkey/address can be derived from it
	// privkey in this struct is always in plaintext
	PrivateKey *ecdsa.PrivateKey
	// add a second privkey for privary
	PrivateKey2 *ecdsa.PrivateKey
	// compact wanchain address format
	WAddress common.WAddress
}

func DecryptKey 

func DecryptKey(keyjson []byte, auth string) (*Key, error)

DecryptKey decrypts a key from a json blob, returning the private key itself.

func GenerateKeyWithWAddress 

func GenerateKeyWithWAddress(keyjson []byte) (*Key, error)

Generate a Key initialized with WAddress field

func NewKeyForDirectICAP 

func NewKeyForDirectICAP(rand io.Reader) *Key

NewKeyForDirectICAP generates a key whose address fits into < 155 bits so it can fit into the Direct ICAP spec. for simplicity and easier compatibility with other libs, we retry until the first byte is 0.

func (*Key) MarshalJSON 

func (k *Key) MarshalJSON() (j []byte, err error)

func (*Key) UnmarshalJSON 

func (k *Key) UnmarshalJSON(j []byte) (err error)

type KeyStore 

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

KeyStore manages a key storage directory on disk.

func NewKeyStore 

func NewKeyStore(keydir string, scryptN, scryptP int) *KeyStore

NewKeyStore creates a keystore for the given directory.

func NewPlaintextKeyStore 

func NewPlaintextKeyStore(keydir string) *KeyStore

NewPlaintextKeyStore creates a keystore for the given directory. Deprecated: Use NewKeyStore.

func (*KeyStore) Accounts 

func (ks *KeyStore) Accounts() []accounts.Account

Accounts returns all key files present in the directory.

func (*KeyStore) ComputeOTAPPKeys 

func (ks *KeyStore) ComputeOTAPPKeys(a accounts.Account, AX, AY, BX, BY string) ([]string, error)

func (*KeyStore) Delete 

func (ks *KeyStore) Delete(a accounts.Account, passphrase string) error

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

func (*KeyStore) Export 

func (ks *KeyStore) Export(a accounts.Account, passphrase, newPassphrase string) (keyJSON []byte, err error)

Export exports as a JSON key, encrypted with newPassphrase.

func (*KeyStore) Find 

func (ks *KeyStore) Find(a accounts.Account) (accounts.Account, error)

Find resolves the given account into a unique entry in the keystore.

func (*KeyStore) GetKey 

func (ks *KeyStore) GetKey(a accounts.Account, passphrase string) (*Key, error)

TODO: temp add, for quickly print public keys, maybe removed later

func (*KeyStore) GetWanAddress 

func (ks *KeyStore) GetWanAddress(account accounts.Account) (common.WAddress, error)

GetWanAddress represents the keystore to retrieve corresponding wanchain public address for a specific ordinary account/address

func (*KeyStore) HasAddress 

func (ks *KeyStore) HasAddress(addr common.Address) bool

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

func (*KeyStore) Import 

func (ks *KeyStore) Import(keyJSON []byte, passphrase, newPassphrase string) (accounts.Account, error)

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

func (*KeyStore) ImportECDSA 

func (ks *KeyStore) ImportECDSA(priv1, priv2 *ecdsa.PrivateKey, passphrase string) (accounts.Account, error)

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

func (*KeyStore) ImportPreSaleKey 

func (ks *KeyStore) ImportPreSaleKey(keyJSON []byte, passphrase string) (accounts.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 (*KeyStore) Lock 

func (ks *KeyStore) Lock(addr common.Address) error

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

func (*KeyStore) NewAccount 

func (ks *KeyStore) NewAccount(passphrase string) (accounts.Account, error)

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

func (*KeyStore) SignHash 

func (ks *KeyStore) SignHash(a accounts.Account, hash []byte) ([]byte, error)

SignHash calculates a ECDSA signature for the given hash. The produced signature is in the [R || S || V] format where V is 0 or 1.

func (*KeyStore) SignHashWithPassphrase 

func (ks *KeyStore) SignHashWithPassphrase(a accounts.Account, passphrase string, hash []byte) (signature []byte, err error)

SignHashWithPassphrase signs hash if the private key matching the given address can be decrypted with the given passphrase. The produced signature is in the [R || S || V] format where V is 0 or 1.

func (*KeyStore) SignTx 

func (ks *KeyStore) SignTx(a accounts.Account, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error)

SignTx signs the given transaction with the requested account.

func (*KeyStore) SignTxWithPassphrase 

func (ks *KeyStore) SignTxWithPassphrase(a accounts.Account, passphrase string, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error)

SignTxWithPassphrase signs the transaction if the private key matching the given address can be decrypted with the given passphrase.

func (*KeyStore) Subscribe 

func (ks *KeyStore) Subscribe(sink chan<- accounts.WalletEvent) event.Subscription

Subscribe implements accounts.Backend, creating an async subscription to receive notifications on the addition or removal of keystore wallets.

func (*KeyStore) TimedUnlock 

func (ks *KeyStore) TimedUnlock(a accounts.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 (*KeyStore) TimedUnlockMemKey 

func (ks *KeyStore) TimedUnlockMemKey(a accounts.Account, keyjson []byte, passphrase string, timeout time.Duration) error

func (*KeyStore) Unlock 

func (ks *KeyStore) Unlock(a accounts.Account, passphrase string) error

Unlock unlocks the given account indefinitely.

func (*KeyStore) UnlockMemKey 

func (ks *KeyStore) UnlockMemKey(a accounts.Account, keyjson []byte, passphrase string) error

func (*KeyStore) Update 

func (ks *KeyStore) Update(a accounts.Account, passphrase, newPassphrase string) error

Update transitions an account from a previous format to the current one, also providing the possibility to change the pass-phrase

func (*KeyStore) Wallets 

func (ks *KeyStore) Wallets() []accounts.Wallet

Wallets implements accounts.Backend, returning all single-key wallets from the keystore directory.

Source Files

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Directories

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