accounts, internal: Changes in response to review
This commit is contained in:
Nick Johnson
Guillaume Ballet
parent
f7027dd68c
commit
78375608a4
@ -139,12 +139,12 @@ func (path DerivationPath) MarshalJSON() ([]byte, error) {
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return []byte(fmt.Sprintf("\"%s\"", path.String())), nil
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}
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func (dp *DerivationPath) UnmarshalJSON(b []byte) error {
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var path string
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func (path *DerivationPath) UnmarshalJSON(b []byte) error {
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var dp string
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var err error
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if err = json.Unmarshal(b, &path); err != nil {
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if err = json.Unmarshal(b, &dp); err != nil {
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return err
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}
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*dp, err = ParseDerivationPath(path)
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*path, err = ParseDerivationPath(dp)
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return err
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}
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@ -22,20 +22,20 @@ import (
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)
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const (
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CLA_ISO7816 = 0
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claISO7816 = 0
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INS_SELECT = 0xA4
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INS_GET_RESPONSE = 0xC0
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INS_PAIR = 0x12
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INS_UNPAIR = 0x13
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INS_OPEN_SECURE_CHANNEL = 0x10
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INS_MUTUALLY_AUTHENTICATE = 0x11
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insSelect = 0xA4
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insGetResponse = 0xC0
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insPair = 0x12
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insUnpair = 0x13
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insOpenSecureChannel = 0x10
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insMutuallyAuthenticate = 0x11
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SW1_GET_RESPONSE = 0x61
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SW1_OK = 0x90
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sw1GetResponse = 0x61
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sw1Ok = 0x90
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)
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// CommandAPDU represents an application data unit sent to a smartcard
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// CommandAPDU represents an application data unit sent to a smartcard.
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type CommandAPDU struct {
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Cla, Ins, P1, P2 uint8 // Class, Instruction, Parameter 1, Parameter 2
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Data []byte // Command data
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@ -72,13 +72,13 @@ func (ca CommandAPDU) serialize() ([]byte, error) {
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return buf.Bytes(), nil
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}
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// ResponseAPDU represents an application data unit received from a smart card
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// ResponseAPDU represents an application data unit received from a smart card.
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type ResponseAPDU struct {
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Data []byte // response data
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Sw1, Sw2 uint8 // status words 1 and 2
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}
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// deserialize deserializes a response APDU
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// deserialize deserializes a response APDU.
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func (ra *ResponseAPDU) deserialize(data []byte) error {
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ra.Data = make([]byte, len(data)-2)
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@ -14,6 +14,22 @@
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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// This package implements support for smartcard-based hardware wallets such as
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// the one written by Status: https://github.com/status-im/hardware-wallet
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//
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// This implementation of smartcard wallets have a different interaction process
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// to other types of hardware wallet. The process works like this:
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//
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// 1. (First use with a given client) Establish a pairing between hardware
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// wallet and client. This requires a secret value called a 'PUK'. You can
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// pair with an unpaired wallet with `personal.openWallet(URI, PUK)`.
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// 2. (First use only) Initialize the wallet, which generates a keypair, stores
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// it on the wallet, and returns it so the user can back it up. You can
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// initialize a wallet with `personal.initializeWallet(URI)`.
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// 3. Connect to the wallet using the pairing information established in step 1.
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// You can connect to a paired wallet with `personal.openWallet(URI, PIN)`.
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// 4. Interact with the wallet as normal.
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package scwallet
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import (
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@ -32,6 +48,7 @@ import (
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"github.com/ethereum/go-ethereum/log"
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)
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// Scheme is the URI prefix for smartcard wallets.
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const Scheme = "pcsc"
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// refreshCycle is the maximum time between wallet refreshes (if USB hotplug
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@ -41,9 +58,9 @@ const refreshCycle = 5 * time.Second
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// refreshThrottling is the minimum time between wallet refreshes to avoid thrashing.
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const refreshThrottling = 500 * time.Millisecond
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// SmartcardPairing contains information about a smart card we have paired with
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// or might pair withub.
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type SmartcardPairing struct {
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// smartcardPairing contains information about a smart card we have paired with
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// or might pair with the hub.
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type smartcardPairing struct {
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PublicKey []byte `json:"publicKey"`
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PairingIndex uint8 `json:"pairingIndex"`
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PairingKey []byte `json:"pairingKey"`
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@ -56,7 +73,7 @@ type Hub struct {
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context *scard.Context
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datadir string
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pairings map[string]SmartcardPairing
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pairings map[string]smartcardPairing
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refreshed time.Time // Time instance when the list of wallets was last refreshed
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wallets map[string]*Wallet // Mapping from reader names to wallet instances
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updateFeed event.Feed // Event feed to notify wallet additions/removals
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@ -71,7 +88,7 @@ type Hub struct {
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var HubType = reflect.TypeOf(&Hub{})
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func (hub *Hub) readPairings() error {
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hub.pairings = make(map[string]SmartcardPairing)
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hub.pairings = make(map[string]smartcardPairing)
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pairingFile, err := os.Open(hub.datadir + "/smartcards.json")
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if err != nil {
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if os.IsNotExist(err) {
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@ -84,7 +101,7 @@ func (hub *Hub) readPairings() error {
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if err != nil {
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return err
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}
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var pairings []SmartcardPairing
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var pairings []smartcardPairing
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if err := json.Unmarshal(pairingData, &pairings); err != nil {
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return err
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}
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@ -101,7 +118,7 @@ func (hub *Hub) writePairings() error {
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return err
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}
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pairings := make([]SmartcardPairing, 0, len(hub.pairings))
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pairings := make([]smartcardPairing, 0, len(hub.pairings))
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for _, pairing := range hub.pairings {
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pairings = append(pairings, pairing)
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}
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@ -118,7 +135,7 @@ func (hub *Hub) writePairings() error {
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return pairingFile.Close()
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}
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func (hub *Hub) getPairing(wallet *Wallet) *SmartcardPairing {
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func (hub *Hub) getPairing(wallet *Wallet) *smartcardPairing {
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pairing, ok := hub.pairings[string(wallet.PublicKey)]
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if ok {
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return &pairing
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@ -126,7 +143,7 @@ func (hub *Hub) getPairing(wallet *Wallet) *SmartcardPairing {
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return nil
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}
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func (hub *Hub) setPairing(wallet *Wallet, pairing *SmartcardPairing) error {
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func (hub *Hub) setPairing(wallet *Wallet, pairing *smartcardPairing) error {
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if pairing == nil {
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delete(hub.pairings, string(wallet.PublicKey))
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} else {
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@ -158,7 +175,7 @@ func NewHub(scheme string, datadir string) (*Hub, error) {
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return hub, nil
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}
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// Wallets implements accounts.Backend, returning all the currently tracked USB
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// Wallets implements accounts.Backend, returning all the currently tracked
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// devices that appear to be hardware wallets.
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func (hub *Hub) Wallets() []accounts.Wallet {
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// Make sure the list of wallets is up to date
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@ -176,7 +193,7 @@ func (hub *Hub) Wallets() []accounts.Wallet {
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return cpy
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}
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// refreshWallets scans the USB devices attached to the machine and updates the
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// refreshWallets scans the devices attached to the machine and updates the
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// list of wallets based on the found devices.
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func (hub *Hub) refreshWallets() {
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elapsed := time.Since(hub.refreshed)
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@ -32,15 +32,15 @@ import (
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)
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const (
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MAX_PAYLOAD_SIZE = 223
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PAIR_P1_FIRST_STEP = 0
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PAIR_P1_LAST_STEP = 1
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maxPayloadSize = 223
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pairP1FirstStep = 0
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pairP1LastStep = 1
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SC_SECRET_LENGTH = 32
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SC_BLOCK_SIZE = 16
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scSecretLength = 32
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scBlockSize = 16
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)
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// SecureChannelSession enables secure communication with a hardware wallet
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// SecureChannelSession enables secure communication with a hardware wallet.
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type SecureChannelSession struct {
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card *scard.Card // A handle to the smartcard for communication
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secret []byte // A shared secret generated from our ECDSA keys
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@ -52,7 +52,7 @@ type SecureChannelSession struct {
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PairingIndex uint8 // The pairing index
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}
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// NewSecureChannelSession creates a new secure channel for the given card and public key
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// NewSecureChannelSession creates a new secure channel for the given card and public key.
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func NewSecureChannelSession(card *scard.Card, keyData []byte) (*SecureChannelSession, error) {
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// Generate an ECDSA keypair for ourselves
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gen := ecdh.NewEllipticECDH(crypto.S256())
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@ -78,7 +78,7 @@ func NewSecureChannelSession(card *scard.Card, keyData []byte) (*SecureChannelSe
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}, nil
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}
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// Pair establishes a new pairing with the smartcard
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// Pair establishes a new pairing with the smartcard.
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func (s *SecureChannelSession) Pair(sharedSecret []byte) error {
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secretHash := sha256.Sum256(sharedSecret)
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@ -87,7 +87,7 @@ func (s *SecureChannelSession) Pair(sharedSecret []byte) error {
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return err
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}
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response, err := s.pair(PAIR_P1_FIRST_STEP, challenge)
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response, err := s.pair(pairP1FirstStep, challenge)
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if err != nil {
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return err
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}
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@ -107,7 +107,7 @@ func (s *SecureChannelSession) Pair(sharedSecret []byte) error {
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md.Reset()
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md.Write(secretHash[:])
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md.Write(cardChallenge)
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response, err = s.pair(PAIR_P1_LAST_STEP, md.Sum(nil))
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response, err = s.pair(pairP1LastStep, md.Sum(nil))
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if err != nil {
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return err
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}
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@ -121,13 +121,13 @@ func (s *SecureChannelSession) Pair(sharedSecret []byte) error {
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return nil
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}
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// Unpair disestablishes an existing pairing
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// Unpair disestablishes an existing pairing.
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func (s *SecureChannelSession) Unpair() error {
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if s.PairingKey == nil {
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return fmt.Errorf("Cannot unpair: not paired")
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}
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_, err := s.TransmitEncrypted(CLA_SCWALLET, INS_UNPAIR, s.PairingIndex, 0, []byte{})
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_, err := s.TransmitEncrypted(claSCWallet, insUnpair, s.PairingIndex, 0, []byte{})
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if err != nil {
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return err
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}
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@ -137,7 +137,7 @@ func (s *SecureChannelSession) Unpair() error {
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return nil
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}
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// Open initializes the secure channel
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// Open initializes the secure channel.
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func (s *SecureChannelSession) Open() error {
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if s.iv != nil {
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return fmt.Errorf("Session already opened")
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@ -153,13 +153,13 @@ func (s *SecureChannelSession) Open() error {
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md := sha512.New()
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md.Write(s.secret)
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md.Write(s.PairingKey)
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md.Write(response.Data[:SC_SECRET_LENGTH])
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md.Write(response.Data[:scSecretLength])
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keyData := md.Sum(nil)
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s.sessionEncKey = keyData[:SC_SECRET_LENGTH]
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s.sessionMacKey = keyData[SC_SECRET_LENGTH : SC_SECRET_LENGTH*2]
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s.sessionEncKey = keyData[:scSecretLength]
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s.sessionMacKey = keyData[scSecretLength : scSecretLength*2]
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// The IV is the last bytes returned from the Open APDU.
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s.iv = response.Data[SC_SECRET_LENGTH:]
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s.iv = response.Data[scSecretLength:]
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if err := s.mutuallyAuthenticate(); err != nil {
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return err
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@ -171,12 +171,12 @@ func (s *SecureChannelSession) Open() error {
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// mutuallyAuthenticate is an internal method to authenticate both ends of the
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// connection.
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func (s *SecureChannelSession) mutuallyAuthenticate() error {
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data := make([]byte, SC_SECRET_LENGTH)
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data := make([]byte, scSecretLength)
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if _, err := rand.Read(data); err != nil {
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return err
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}
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response, err := s.TransmitEncrypted(CLA_SCWALLET, INS_MUTUALLY_AUTHENTICATE, 0, 0, data)
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response, err := s.TransmitEncrypted(claSCWallet, insMutuallyAuthenticate, 0, 0, data)
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if err != nil {
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return err
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}
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@ -184,18 +184,18 @@ func (s *SecureChannelSession) mutuallyAuthenticate() error {
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return fmt.Errorf("Got unexpected response from MUTUALLY_AUTHENTICATE: 0x%x%x", response.Sw1, response.Sw2)
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}
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if len(response.Data) != SC_SECRET_LENGTH {
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return fmt.Errorf("Response from MUTUALLY_AUTHENTICATE was %d bytes, expected %d", len(response.Data), SC_SECRET_LENGTH)
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if len(response.Data) != scSecretLength {
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return fmt.Errorf("Response from MUTUALLY_AUTHENTICATE was %d bytes, expected %d", len(response.Data), scSecretLength)
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}
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return nil
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}
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// open is an internal method that sends an open APDU
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// open is an internal method that sends an open APDU.
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func (s *SecureChannelSession) open() (*ResponseAPDU, error) {
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return transmit(s.card, &CommandAPDU{
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Cla: CLA_SCWALLET,
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Ins: INS_OPEN_SECURE_CHANNEL,
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Cla: claSCWallet,
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Ins: insOpenSecureChannel,
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P1: s.PairingIndex,
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P2: 0,
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Data: s.publicKey,
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@ -203,11 +203,11 @@ func (s *SecureChannelSession) open() (*ResponseAPDU, error) {
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})
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}
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// pair is an internal method that sends a pair APDU
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// pair is an internal method that sends a pair APDU.
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func (s *SecureChannelSession) pair(p1 uint8, data []byte) (*ResponseAPDU, error) {
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return transmit(s.card, &CommandAPDU{
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Cla: CLA_SCWALLET,
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Ins: INS_PAIR,
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Cla: claSCWallet,
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Ins: insPair,
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P1: p1,
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P2: 0,
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Data: data,
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@ -215,7 +215,7 @@ func (s *SecureChannelSession) pair(p1 uint8, data []byte) (*ResponseAPDU, error
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})
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}
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// TransmitEncrypted sends an encrypted message, and decrypts and returns the response
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// TransmitEncrypted sends an encrypted message, and decrypts and returns the response.
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func (s *SecureChannelSession) TransmitEncrypted(cla, ins, p1, p2 byte, data []byte) (*ResponseAPDU, error) {
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if s.iv == nil {
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return nil, fmt.Errorf("Channel not open")
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@ -225,7 +225,7 @@ func (s *SecureChannelSession) TransmitEncrypted(cla, ins, p1, p2 byte, data []b
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if err != nil {
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return nil, err
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}
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meta := []byte{cla, ins, p1, p2, byte(len(data) + SC_BLOCK_SIZE), 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
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meta := []byte{cla, ins, p1, p2, byte(len(data) + scBlockSize), 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
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if err = s.updateIV(meta, data); err != nil {
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return nil, err
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}
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@ -263,17 +263,17 @@ func (s *SecureChannelSession) TransmitEncrypted(cla, ins, p1, p2 byte, data []b
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rapdu := &ResponseAPDU{}
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rapdu.deserialize(plainData)
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if rapdu.Sw1 != SW1_OK {
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if rapdu.Sw1 != sw1Ok {
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return nil, fmt.Errorf("Unexpected response status Cla=0x%x, Ins=0x%x, Sw=0x%x%x", cla, ins, rapdu.Sw1, rapdu.Sw2)
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}
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return rapdu, nil
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}
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// encryptAPDU is an internal method that serializes and encrypts an APDU
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// encryptAPDU is an internal method that serializes and encrypts an APDU.
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func (s *SecureChannelSession) encryptAPDU(data []byte) ([]byte, error) {
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if len(data) > MAX_PAYLOAD_SIZE {
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return nil, fmt.Errorf("Payload of %d bytes exceeds maximum of %d", len(data), MAX_PAYLOAD_SIZE)
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if len(data) > maxPayloadSize {
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return nil, fmt.Errorf("Payload of %d bytes exceeds maximum of %d", len(data), maxPayloadSize)
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}
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data = pad(data, 0x80)
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@ -288,7 +288,7 @@ func (s *SecureChannelSession) encryptAPDU(data []byte) ([]byte, error) {
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return ret, nil
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}
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// pad applies message padding to a 16 byte boundary
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// pad applies message padding to a 16 byte boundary.
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func pad(data []byte, terminator byte) []byte {
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padded := make([]byte, (len(data)/16+1)*16)
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copy(padded, data)
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@ -296,7 +296,7 @@ func pad(data []byte, terminator byte) []byte {
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return padded
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}
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// decryptAPDU is an internal method that decrypts and deserializes an APDU
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// decryptAPDU is an internal method that decrypts and deserializes an APDU.
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func (s *SecureChannelSession) decryptAPDU(data []byte) ([]byte, error) {
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a, err := aes.NewCipher(s.sessionEncKey)
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if err != nil {
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@ -310,7 +310,7 @@ func (s *SecureChannelSession) decryptAPDU(data []byte) ([]byte, error) {
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return unpad(ret, 0x80)
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}
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// unpad strips padding from a message
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// unpad strips padding from a message.
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func unpad(data []byte, terminator byte) ([]byte, error) {
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for i := 1; i <= 16; i++ {
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switch data[len(data)-i] {
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@ -42,7 +42,7 @@ import (
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)
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var (
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APPLET_AID = []byte{0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x57, 0x61, 0x6C, 0x6C, 0x65, 0x74, 0x41, 0x70, 0x70}
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appletAID = []byte{0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x57, 0x61, 0x6C, 0x6C, 0x65, 0x74, 0x41, 0x70, 0x70}
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AlreadyOpenError = errors.New("Wallet already open")
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PairingRequiredError = errors.New("Pairing required with personal.openWallet(puk)")
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PinRequiredError = errors.New("Must unlock with personal.openWallet(pin)")
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@ -52,23 +52,23 @@ var (
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)
|
||||
|
||||
const (
|
||||
CLA_SCWALLET = 0x80
|
||||
INS_VERIFY_PIN = 0x20
|
||||
INS_EXPORT_KEY = 0xC2
|
||||
INS_SIGN = 0xC0
|
||||
INS_LOAD_KEY = 0xD0
|
||||
INS_DERIVE_KEY = 0xD1
|
||||
INS_STATUS = 0xF2
|
||||
DERIVE_P1_ASSISTED = uint8(0x01)
|
||||
DERIVE_P1_APPEND = uint8(0x80)
|
||||
DERIVE_P2_KEY_PATH = uint8(0x00)
|
||||
DERIVE_P2_PUBLIC_KEY = uint8(0x01)
|
||||
STATUS_P1_WALLET_STATUS = uint8(0x00)
|
||||
STATUS_P1_PATH = uint8(0x01)
|
||||
SIGN_P1_PRECOMPUTED_HASH = uint8(0x01)
|
||||
SIGN_P2_ONLY_BLOCK = uint8(0x81)
|
||||
EXPORT_P1_ANY = uint8(0x00)
|
||||
EXPORT_P2_PUBKEY = uint8(0x01)
|
||||
claSCWallet = 0x80
|
||||
insVerifyPin = 0x20
|
||||
insExportKey = 0xC2
|
||||
insSign = 0xC0
|
||||
insLoadKey = 0xD0
|
||||
insDeriveKey = 0xD1
|
||||
insStatus = 0xF2
|
||||
deriveP1Assisted = uint8(0x01)
|
||||
deriveP1Append = uint8(0x80)
|
||||
deriveP2KeyPath = uint8(0x00)
|
||||
deriveP2PublicKey = uint8(0x01)
|
||||
statusP1WalletStatus = uint8(0x00)
|
||||
statusP1Path = uint8(0x01)
|
||||
signP1PrecomputedHash = uint8(0x01)
|
||||
signP2OnlyBlock = uint8(0x81)
|
||||
exportP1Any = uint8(0x00)
|
||||
exportP2Pubkey = uint8(0x01)
|
||||
|
||||
// Minimum time to wait between self derivation attempts, even it the user is
|
||||
// requesting accounts like crazy.
|
||||
@ -120,10 +120,10 @@ func transmit(card *scard.Card, command *CommandAPDU) (*ResponseAPDU, error) {
|
||||
}
|
||||
|
||||
// Are we being asked to fetch the response separately?
|
||||
if response.Sw1 == SW1_GET_RESPONSE && (command.Cla != CLA_ISO7816 || command.Ins != INS_GET_RESPONSE) {
|
||||
if response.Sw1 == sw1GetResponse && (command.Cla != claISO7816 || command.Ins != insGetResponse) {
|
||||
return transmit(card, &CommandAPDU{
|
||||
Cla: CLA_ISO7816,
|
||||
Ins: INS_GET_RESPONSE,
|
||||
Cla: claISO7816,
|
||||
Ins: insGetResponse,
|
||||
P1: 0,
|
||||
P2: 0,
|
||||
Data: nil,
|
||||
@ -131,7 +131,7 @@ func transmit(card *scard.Card, command *CommandAPDU) (*ResponseAPDU, error) {
|
||||
})
|
||||
}
|
||||
|
||||
if response.Sw1 != SW1_OK {
|
||||
if response.Sw1 != sw1Ok {
|
||||
return nil, fmt.Errorf("Unexpected insecure response status Cla=0x%x, Ins=0x%x, Sw=0x%x%x", command.Cla, command.Ins, response.Sw1, response.Sw2)
|
||||
}
|
||||
|
||||
@ -173,11 +173,11 @@ func (w *Wallet) connect() error {
|
||||
// doselect is an internal (unlocked) function to send a SELECT APDU to the card.
|
||||
func (w *Wallet) doselect() (*applicationInfo, error) {
|
||||
response, err := transmit(w.card, &CommandAPDU{
|
||||
Cla: CLA_ISO7816,
|
||||
Ins: INS_SELECT,
|
||||
Cla: claISO7816,
|
||||
Ins: insSelect,
|
||||
P1: 4,
|
||||
P2: 0,
|
||||
Data: APPLET_AID,
|
||||
Data: appletAID,
|
||||
})
|
||||
if err != nil {
|
||||
return nil, err
|
||||
@ -685,7 +685,7 @@ func (w *Wallet) findAccountPath(account accounts.Account) (accounts.DerivationP
|
||||
return accounts.ParseDerivationPath(parts[1])
|
||||
}
|
||||
|
||||
// Session represents a secured communication session with the wallet
|
||||
// Session represents a secured communication session with the wallet.
|
||||
type Session struct {
|
||||
Wallet *Wallet // A handle to the wallet that opened the session
|
||||
Channel *SecureChannelSession // A secure channel for encrypted messages
|
||||
@ -693,13 +693,13 @@ type Session struct {
|
||||
}
|
||||
|
||||
// pair establishes a new pairing over this channel, using the provided secret.
|
||||
func (s *Session) pair(secret []byte) (SmartcardPairing, error) {
|
||||
func (s *Session) pair(secret []byte) (smartcardPairing, error) {
|
||||
err := s.Channel.Pair(secret)
|
||||
if err != nil {
|
||||
return SmartcardPairing{}, err
|
||||
return smartcardPairing{}, err
|
||||
}
|
||||
|
||||
return SmartcardPairing{
|
||||
return smartcardPairing{
|
||||
PublicKey: s.Wallet.PublicKey,
|
||||
PairingIndex: s.Channel.PairingIndex,
|
||||
PairingKey: s.Channel.PairingKey,
|
||||
@ -707,7 +707,7 @@ func (s *Session) pair(secret []byte) (SmartcardPairing, error) {
|
||||
}, nil
|
||||
}
|
||||
|
||||
// unpair deletes an existing pairing
|
||||
// unpair deletes an existing pairing.
|
||||
func (s *Session) unpair() error {
|
||||
if !s.verified {
|
||||
return fmt.Errorf("Unpair requires that the PIN be verified")
|
||||
@ -715,27 +715,27 @@ func (s *Session) unpair() error {
|
||||
return s.Channel.Unpair()
|
||||
}
|
||||
|
||||
// verifyPin unlocks a wallet with the provided pin
|
||||
// verifyPin unlocks a wallet with the provided pin.
|
||||
func (s *Session) verifyPin(pin []byte) error {
|
||||
if _, err := s.Channel.TransmitEncrypted(CLA_SCWALLET, INS_VERIFY_PIN, 0, 0, pin); err != nil {
|
||||
if _, err := s.Channel.TransmitEncrypted(claSCWallet, insVerifyPin, 0, 0, pin); err != nil {
|
||||
return err
|
||||
}
|
||||
s.verified = true
|
||||
return nil
|
||||
}
|
||||
|
||||
// release releases resources associated with the channel
|
||||
// release releases resources associated with the channel.
|
||||
func (s *Session) release() error {
|
||||
return s.Wallet.card.Disconnect(scard.LeaveCard)
|
||||
}
|
||||
|
||||
// paired returns true if a valid pairing exists
|
||||
// paired returns true if a valid pairing exists.
|
||||
func (s *Session) paired() bool {
|
||||
return s.Channel.PairingKey != nil
|
||||
}
|
||||
|
||||
// authenticate uses an existing pairing to establish a secure channel
|
||||
func (s *Session) authenticate(pairing SmartcardPairing) error {
|
||||
// authenticate uses an existing pairing to establish a secure channel.
|
||||
func (s *Session) authenticate(pairing smartcardPairing) error {
|
||||
if !bytes.Equal(s.Wallet.PublicKey, pairing.PublicKey) {
|
||||
return fmt.Errorf("Cannot pair using another wallet's pairing; %x != %x", s.Wallet.PublicKey, pairing.PublicKey)
|
||||
}
|
||||
@ -744,7 +744,7 @@ func (s *Session) authenticate(pairing SmartcardPairing) error {
|
||||
return s.Channel.Open()
|
||||
}
|
||||
|
||||
// walletStatus describes a smartcard wallet's status information
|
||||
// walletStatus describes a smartcard wallet's status information.
|
||||
type walletStatus struct {
|
||||
PinRetryCount int // Number of remaining PIN retries
|
||||
PukRetryCount int // Number of remaining PUK retries
|
||||
@ -756,9 +756,9 @@ func (w walletStatus) String() string {
|
||||
return fmt.Sprintf("pinRetryCount=%d, pukRetryCount=%d, initialized=%t, supportsPkDerivation=%t", w.PinRetryCount, w.PukRetryCount, w.Initialized, w.SupportsPKDerivation)
|
||||
}
|
||||
|
||||
// getWalletStatus fetches the wallet's status from the card
|
||||
// getWalletStatus fetches the wallet's status from the card.
|
||||
func (s *Session) getWalletStatus() (*walletStatus, error) {
|
||||
response, err := s.Channel.TransmitEncrypted(CLA_SCWALLET, INS_STATUS, STATUS_P1_WALLET_STATUS, 0, nil)
|
||||
response, err := s.Channel.TransmitEncrypted(claSCWallet, insStatus, statusP1WalletStatus, 0, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
@ -771,9 +771,9 @@ func (s *Session) getWalletStatus() (*walletStatus, error) {
|
||||
return status, nil
|
||||
}
|
||||
|
||||
// getDerivationPath fetches the wallet's current derivation path from the card
|
||||
// getDerivationPath fetches the wallet's current derivation path from the card.
|
||||
func (s *Session) getDerivationPath() (accounts.DerivationPath, error) {
|
||||
response, err := s.Channel.TransmitEncrypted(CLA_SCWALLET, INS_STATUS, STATUS_P1_PATH, 0, nil)
|
||||
response, err := s.Channel.TransmitEncrypted(claSCWallet, insStatus, statusP1Path, 0, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
@ -783,14 +783,14 @@ func (s *Session) getDerivationPath() (accounts.DerivationPath, error) {
|
||||
return path, binary.Read(buf, binary.BigEndian, &path)
|
||||
}
|
||||
|
||||
// initializeData contains data needed to initialize the smartcard wallet
|
||||
// initializeData contains data needed to initialize the smartcard wallet.
|
||||
type initializeData struct {
|
||||
PublicKey []byte `asn1:"tag:0"`
|
||||
PrivateKey []byte `asn1:"tag:1"`
|
||||
ChainCode []byte `asn1:"tag:2"`
|
||||
}
|
||||
|
||||
// initialize initializes the card with new key data
|
||||
// initialize initializes the card with new key data.
|
||||
func (s *Session) initialize(seed []byte) error {
|
||||
// HMAC the seed to produce the private key and chain code
|
||||
mac := hmac.New(sha512.New, []byte("Bitcoin seed"))
|
||||
@ -814,11 +814,11 @@ func (s *Session) initialize(seed []byte) error {
|
||||
// Nasty hack to force the top-level struct tag to be context-specific
|
||||
data[0] = 0xA1
|
||||
|
||||
_, err = s.Channel.TransmitEncrypted(CLA_SCWALLET, INS_LOAD_KEY, 0x02, 0, data)
|
||||
_, err = s.Channel.TransmitEncrypted(claSCWallet, insLoadKey, 0x02, 0, data)
|
||||
return err
|
||||
}
|
||||
|
||||
// derive derives a new HD key path on the card
|
||||
// derive derives a new HD key path on the card.
|
||||
func (s *Session) derive(path accounts.DerivationPath) (accounts.Account, error) {
|
||||
// If the current path is a prefix of the desired path, we don't have to
|
||||
// start again.
|
||||
@ -858,7 +858,7 @@ func (s *Session) derive(path accounts.DerivationPath) (accounts.Account, error)
|
||||
return s.Wallet.makeAccount(crypto.PubkeyToAddress(*crypto.ToECDSAPub(pubkey)), path), nil
|
||||
}
|
||||
|
||||
// keyDerivationInfo contains information on the current key derivation step
|
||||
// keyDerivationInfo contains information on the current key derivation step.
|
||||
type keyDerivationInfo struct {
|
||||
PublicKeyX []byte `asn1:"tag:3"` // The X coordinate of the current public key
|
||||
Signature struct {
|
||||
@ -871,16 +871,16 @@ type keyDerivationInfo struct {
|
||||
// a specific path, and performing the necessary computations to finish the public key
|
||||
// generation step.
|
||||
func (s *Session) deriveKeyAssisted(reset bool, pathComponent uint32) ([]byte, error) {
|
||||
p1 := DERIVE_P1_ASSISTED
|
||||
p1 := deriveP1Assisted
|
||||
if !reset {
|
||||
p1 |= DERIVE_P1_APPEND
|
||||
p1 |= deriveP1Append
|
||||
}
|
||||
|
||||
buf := new(bytes.Buffer)
|
||||
if err := binary.Write(buf, binary.BigEndian, pathComponent); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
response, err := s.Channel.TransmitEncrypted(CLA_SCWALLET, INS_DERIVE_KEY, p1, DERIVE_P2_KEY_PATH, buf.Bytes())
|
||||
response, err := s.Channel.TransmitEncrypted(claSCWallet, insDeriveKey, p1, deriveP2KeyPath, buf.Bytes())
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
@ -900,7 +900,7 @@ func (s *Session) deriveKeyAssisted(reset bool, pathComponent uint32) ([]byte, e
|
||||
return nil, err
|
||||
}
|
||||
|
||||
_, err = s.Channel.TransmitEncrypted(CLA_SCWALLET, INS_DERIVE_KEY, DERIVE_P1_ASSISTED|DERIVE_P1_APPEND, DERIVE_P2_PUBLIC_KEY, pubkey)
|
||||
_, err = s.Channel.TransmitEncrypted(claSCWallet, insDeriveKey, deriveP1Assisted|deriveP1Append, deriveP2PublicKey, pubkey)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
@ -908,15 +908,15 @@ func (s *Session) deriveKeyAssisted(reset bool, pathComponent uint32) ([]byte, e
|
||||
return pubkey, nil
|
||||
}
|
||||
|
||||
// keyExport contains information on an exported keypair
|
||||
// keyExport contains information on an exported keypair.
|
||||
type keyExport struct {
|
||||
PublicKey []byte `asn1:"tag:0"`
|
||||
PrivateKey []byte `asn1:"tag:1,optional"`
|
||||
}
|
||||
|
||||
// getPublicKey returns the public key for the current derivation path
|
||||
// getPublicKey returns the public key for the current derivation path.
|
||||
func (s *Session) getPublicKey() ([]byte, error) {
|
||||
response, err := s.Channel.TransmitEncrypted(CLA_SCWALLET, INS_EXPORT_KEY, EXPORT_P1_ANY, EXPORT_P2_PUBKEY, nil)
|
||||
response, err := s.Channel.TransmitEncrypted(claSCWallet, insExportKey, exportP1Any, exportP2Pubkey, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
@ -930,7 +930,7 @@ func (s *Session) getPublicKey() ([]byte, error) {
|
||||
}
|
||||
|
||||
// signatureData contains information on a signature - the signature itself and
|
||||
// the corresponding public key
|
||||
// the corresponding public key.
|
||||
type signatureData struct {
|
||||
PublicKey []byte `asn1:"tag:0"`
|
||||
Signature struct {
|
||||
@ -949,7 +949,7 @@ func (s *Session) sign(path accounts.DerivationPath, hash []byte) ([]byte, error
|
||||
}
|
||||
deriveTime := time.Now()
|
||||
|
||||
response, err := s.Channel.TransmitEncrypted(CLA_SCWALLET, INS_SIGN, SIGN_P1_PRECOMPUTED_HASH, SIGN_P2_ONLY_BLOCK, hash)
|
||||
response, err := s.Channel.TransmitEncrypted(claSCWallet, insSign, signP1PrecomputedHash, signP2OnlyBlock, hash)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
@ -473,6 +473,7 @@ func (s *PrivateAccountAPI) SignAndSendTransaction(ctx context.Context, args Sen
|
||||
return s.SendTransaction(ctx, args, passwd)
|
||||
}
|
||||
|
||||
// InitializeWallet initializes a new wallet at the provided URL, by generating and returning a new private key.
|
||||
func (s *PrivateAccountAPI) InitializeWallet(ctx context.Context, url string) (string, error) {
|
||||
wallet, err := s.am.Wallet(url)
|
||||
if err != nil {
|
||||
@ -499,6 +500,7 @@ func (s *PrivateAccountAPI) InitializeWallet(ctx context.Context, url string) (s
|
||||
}
|
||||
}
|
||||
|
||||
// Unpair deletes a pairing between wallet and geth.
|
||||
func (s *PrivateAccountAPI) Unpair(ctx context.Context, url string, pin string) error {
|
||||
wallet, err := s.am.Wallet(url)
|
||||
if err != nil {
|
||||
|
||||
Loading…
Reference in New Issue
Block a user