status-im/keycard-go
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parse remaining attempts on VerifyPIN error

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This commit is contained in:
Andrea Franz 2021-10-06 10:27:25 +02:00
parent c32310e39b
commit f53d31ab34
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GPG Key ID: 4F0D2F2D9DE7F29D
1 changed files with 19 additions and 1 deletions
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20
command_set.go
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@ -4,6 +4,7 @@ import (
"crypto/rand"
"crypto/sha256"
"errors"
"fmt"
"github.com/status-im/keycard-go/apdu"
"github.com/status-im/keycard-go/crypto"
@ -14,6 +15,14 @@ import (
var ErrNoAvailablePairingSlots = errors.New("no available pairing slots")
type WrongPINError struct {
remainingAttempts int
}
func (e *WrongPINError) Error() string {
return fmt.Sprintf("wrong pin. remaining attempts: %d", e.remainingAttempts)
}
type CommandSet struct {
c types.Channel
sc *SecureChannel
@ -177,8 +186,17 @@ func (cs *CommandSet) GetStatusKeyPath() (*types.ApplicationStatus, error) {
func (cs *CommandSet) VerifyPIN(pin string) error {
cmd := NewCommandVerifyPIN(pin)
resp, err := cs.sc.Send(cmd)
if err = cs.checkOK(resp, err); err != nil {
if resp.Sw&0x63C0 == 0x63C0 {
remainingAttempts := resp.Sw & 0x000F
return &WrongPINError{
remainingAttempts: int(remainingAttempts),
}
}
return err
}
return cs.checkOK(resp, err)
return nil
}
func (cs *CommandSet) ChangePIN(pin string) error {