59 lines
1.3 KiB
Go
59 lines
1.3 KiB
Go
package types
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import (
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"bytes"
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"errors"
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"github.com/status-im/keycard-go/apdu"
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"github.com/status-im/keycard-go/derivationpath"
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)
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const hardenedStart = 0x80000000 // 2^31
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var ErrApplicationStatusTemplateNotFound = errors.New("application status template not found")
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type ApplicationStatus struct {
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PinRetryCount int
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PUKRetryCount int
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KeyInitialized bool
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Path string
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}
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func ParseApplicationStatus(data []byte) (*ApplicationStatus, error) {
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tpl, err := apdu.FindTag(data, apdu.Tag{TagApplicationStatusTemplate})
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if err != nil {
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return parseKeyPathStatus(data)
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}
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appStatus := &ApplicationStatus{}
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if pinRetryCount, err := apdu.FindTag(tpl, apdu.Tag{0x02}); err == nil && len(pinRetryCount) == 1 {
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appStatus.PinRetryCount = int(pinRetryCount[0])
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}
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if pukRetryCount, err := apdu.FindTagN(tpl, 1, apdu.Tag{0x02}); err == nil && len(pukRetryCount) == 1 {
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appStatus.PUKRetryCount = int(pukRetryCount[0])
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}
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if keyInitialized, err := apdu.FindTag(tpl, apdu.Tag{0x01}); err == nil {
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if bytes.Equal(keyInitialized, []byte{0xFF}) {
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appStatus.KeyInitialized = true
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}
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}
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return appStatus, nil
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}
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func parseKeyPathStatus(data []byte) (*ApplicationStatus, error) {
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appStatus := &ApplicationStatus{}
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path, err := derivationpath.EncodeFromBytes(data)
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if err != nil {
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return nil, err
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}
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appStatus.Path = path
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return appStatus, nil
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}
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