83 lines
1.5 KiB
Go
83 lines
1.5 KiB
Go
package keycard
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import (
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"github.com/status-im/keycard-go/apdu"
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"github.com/status-im/keycard-go/globalplatform"
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"github.com/status-im/keycard-go/identifiers"
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"github.com/status-im/keycard-go/types"
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)
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type CommandSet struct {
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c types.Channel
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ApplicationInfo types.ApplicationInfo
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}
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func NewCommandSet(c types.Channel) *CommandSet {
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return &CommandSet{
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c: c,
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}
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}
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func (cs *CommandSet) Select() error {
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instanceAID, err := identifiers.KeycardInstanceAID(identifiers.KeycardDefaultInstanceIndex)
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if err != nil {
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return err
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}
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cmd := apdu.NewCommand(
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0x00,
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globalplatform.InsSelect,
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uint8(0x04),
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uint8(0x00),
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instanceAID,
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)
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cmd.SetLe(0)
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resp, err := cs.c.Send(cmd)
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err = cs.checkOK(resp, err)
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if err == nil {
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appInfo, err := types.ParseApplicationInfo(resp.Data)
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if err != nil {
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return err
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}
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cs.ApplicationInfo = appInfo
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return nil
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}
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return err
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}
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func (cs *CommandSet) Init(secrets *Secrets) error {
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secureChannel, err := NewSecureChannel(cs.c, cs.ApplicationInfo.PublicKey)
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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 := NewCommandInit(data)
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resp, err := cs.c.Send(init)
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return cs.checkOK(resp, err)
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}
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func (cs *CommandSet) checkOK(resp *apdu.Response, err error, allowedResponses ...uint16) error {
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if len(allowedResponses) == 0 {
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allowedResponses = []uint16{apdu.SwOK}
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}
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for _, code := range allowedResponses {
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if code == resp.Sw {
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return nil
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}
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}
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return apdu.NewErrBadResponse(resp.Sw, "unexpected response")
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}
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