49 lines
1.2 KiB
Go
49 lines
1.2 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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)
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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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PubKeyDerivation bool
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}
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func ParseApplicationStatus(data []byte) (*ApplicationStatus, error) {
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appStatus := &ApplicationStatus{}
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tpl, err := apdu.FindTag(data, TagApplicationStatusTemplate)
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if err != nil {
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return nil, ErrApplicationStatusTemplateNotFound
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}
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if pinRetryCount, err := apdu.FindTag(tpl, uint8(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, uint8(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, uint8(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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if keyDerivationSupported, err := apdu.FindTagN(tpl, 1, uint8(0x01)); err == nil {
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if bytes.Equal(keyDerivationSupported, []byte{0xFF}) {
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appStatus.PubKeyDerivation = true
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}
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}
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return appStatus, nil
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}
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