status-im
/
keycard-go
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remove unnecessary workarounds, fix secure channel

This commit is contained in:
Michele Balistreri 2022-08-04 11:45:19 +02:00
parent 5e261398ed
commit 059bc140ce
2 changed files with 10 additions and 10 deletions
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2
commands.go
View File

@ -345,7 +345,7 @@ func NewCommandGetData(typ uint8) *apdu.Command {
InsGetData,
typ,
0,
[]byte{0xCA},
[]byte{},
)
}

18
secure_channel.go
View File

@ -92,18 +92,18 @@ func (sc *SecureChannel) Send(cmd *apdu.Command) (*apdu.Response, error) {
return nil, err
}
if resp.Sw != globalplatform.SwOK {
return nil, apdu.NewErrBadResponse(resp.Sw, "unexpected sw in secure channel")
}
var plainData []byte
if sc.open {
if resp.Sw != globalplatform.SwOK {
return nil, apdu.NewErrBadResponse(resp.Sw, "unexpected sw in secure channel")
}
rmeta := []byte{byte(len(resp.Data)), 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
rmac := resp.Data[:len(sc.iv)]
rdata := resp.Data[len(sc.iv):]
if plainData, err = crypto.DecryptData(rdata, sc.encKey, sc.iv); err != nil {
plainData, err := crypto.DecryptData(rdata, sc.encKey, sc.iv)
if err != nil {
return nil, err
}
@ -116,11 +116,11 @@ func (sc *SecureChannel) Send(cmd *apdu.Command) (*apdu.Response, error) {
}
logger.Debug("apdu response decrypted", "hex", hexutils.BytesToHexWithSpaces(plainData))
return apdu.ParseResponse(plainData)
} else {
plainData = resp.Data
return resp, nil
}
return apdu.ParseResponse(plainData)
}
func (sc *SecureChannel) updateIV(meta, data []byte) error {