func verifyOcSig(reqHash []byte, ocID msg.OcID, sig string) bool {
ocCredReader := strings.NewReader(ocID.String())
var x, y, r, s big.Int
n, err := fmt.Fscanf(ocCredReader, string(OC_ID_PREFIX)+"%x,%x", &x, &y)
if err != nil {
return false
}
n, err = ocCredReader.Read(make([]byte, 1))
if n != 0 || err != io.EOF {
return false
}
sigReader := strings.NewReader(sig)
n, err = fmt.Fscanf(sigReader, "%x,%x", &r, &s)
if err != nil {
return false
}
n, err = sigReader.Read(make([]byte, 1))
if n != 0 || err != io.EOF {
return false
}
curve := elliptic.P256()
pub := ecdsa.PublicKey{
Curve: curve,
X: &x,
Y: &y,
}
return ecdsa.Verify(&pub, reqHash, &r, &s)
}
func setOcIDForCoin(coin string, ocID *msg.OcID) error {
fmt.Printf("set oc ID for coin %v\n", coin)
d := util.GetOrCreateDB(peerDBPath())
err := d.Write(coin, []byte(ocID.String()))
util.Ferr(err)
return nil
}
func NewContainerFromDisk(id msg.OcID) *Container {
d := util.GetOrCreateDB(containersDB())
containerID := ocIDToContainerID(id)
ser, _ := d.Read(id.String())
if ser == nil || len(ser) == 0 {
return &Container{ID: containerID, OwnerID: id}
} else {
var container Container
err := json.Unmarshal(ser, &container)
util.Ferr(err)
return &container
}
}
func ocIDToContainerID(id msg.OcID) ContainerID {
return ContainerID(util.Sha256AsString([]byte(id.String())))
}