98 lines
2.3 KiB
Go
98 lines
2.3 KiB
Go
package actions
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import (
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"errors"
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"github.com/status-im/smartcard-go/apdu"
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"github.com/status-im/smartcard-go/globalplatform"
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"github.com/status-im/smartcard-go/lightwallet"
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)
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var (
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ErrAlreadyInitialized = errors.New("card already initialized")
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ErrNotInitialized = errors.New("card not initialized")
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ErrUnknownApplicationInfoTemplate = errors.New("unknown application info template")
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)
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type ApplicationInfo struct {
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InstanceUID []byte
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PublicKey []byte
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Version []byte
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AvailableSlots []byte
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}
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func Select(c globalplatform.Channel, aid []byte) (*ApplicationInfo, error) {
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sel := globalplatform.NewCommandSelect(aid)
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resp, err := c.Send(sel)
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if err != nil {
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return nil, err
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}
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if resp.Data[0] == lightwallet.TagSelectResponsePreInitialized {
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return nil, ErrNotInitialized
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}
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return parseApplicationInfo(resp)
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}
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func Init(c globalplatform.Channel, secrets *lightwallet.Secrets, aid []byte) error {
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sel := globalplatform.NewCommandSelect(aid)
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resp, err := c.Send(sel)
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if err != nil {
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return err
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}
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if resp.Data[0] != lightwallet.TagSelectResponsePreInitialized {
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return ErrAlreadyInitialized
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}
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cardKeyData := resp.Data[2:]
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secureChannel, err := lightwallet.NewSecureChannel(c, cardKeyData)
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if err != nil {
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return err
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}
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data, err := secureChannel.OneShotEncrypt(secrets)
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if err != nil {
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return err
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}
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init := lightwallet.NewCommandInit(data)
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_, err = c.Send(init)
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return err
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}
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func parseApplicationInfo(resp *apdu.Response) (*ApplicationInfo, error) {
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if resp.Data[0] != lightwallet.TagApplicationInfoTemplate {
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return nil, ErrUnknownApplicationInfoTemplate
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}
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instanceUID, err := apdu.FindTag(resp.Data, lightwallet.TagApplicationInfoTemplate, uint8(0x8F))
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if err != nil {
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return nil, err
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}
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pubKey, err := apdu.FindTag(resp.Data, lightwallet.TagApplicationInfoTemplate, uint8(0x80))
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if err != nil {
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return nil, err
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}
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appVersion, err := apdu.FindTag(resp.Data, lightwallet.TagApplicationInfoTemplate, uint8(0x02))
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if err != nil {
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return nil, err
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}
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availableSlots, err := apdu.FindTagN(resp.Data, 1, lightwallet.TagApplicationInfoTemplate, uint8(0x02))
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if err != nil {
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return nil, err
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}
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return &ApplicationInfo{
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InstanceUID: instanceUID,
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PublicKey: pubKey,
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Version: appVersion,
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AvailableSlots: availableSlots,
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}, nil
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}
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