func main() {
var err error
var group = new(bbssig.Group)
var priv = new(bbssig.PrivateKey)
var privhandle *os.File
privhandle, err = os.Open(os.Args[2])
if err != nil {
log.Fatal(err)
}
var privreader *bufio.Reader
privreader = bufio.NewReader(privhandle)
{
var gp []byte
var success bool
gp = basepack.Unpack(privreader)
_, success = group.Unmarshal(gp)
if !success {
log.Fatal("Unable to read group data")
}
var pb []byte
pb = basepack.Unpack(privreader)
_, success = priv.Unmarshal(group, pb)
if !success {
log.Fatal("Unable to read private key")
}
}
var sig []byte
sig, err = base64.StdEncoding.DecodeString(os.Args[1])
if err != nil {
log.Fatal("Signature is invalid")
}
var tag []byte
var success bool
tag, success = priv.Open(sig)
if !success {
log.Fatal("Signature unknown")
} else {
fmt.Printf("The tag is %s\n", base64.StdEncoding.EncodeToString(tag))
}
}
