func main() {
var err error
var challenge []byte
var response []byte
var group *bbssig.Group = new(bbssig.Group)
var gfile *os.File
gfile, err = os.Open(os.Args[3])
if err != nil {
log.Fatal(err)
}
var ghandle = bufio.NewReader(gfile)
{
var gb = basepack.Unpack(ghandle)
var success bool
_, success = group.Unmarshal(gb)
if !success {
log.Fatal("Unable to unmarshal public key")
}
}
challenge, err = base64.StdEncoding.DecodeString(os.Args[1])
if err != nil {
log.Fatal("Invalid challenge")
}
response, err = base64.StdEncoding.DecodeString(os.Args[2])
if err != nil {
log.Fatal("Invalid response")
}
if group.Verify(challenge, sha256.New(), response) {
fmt.Printf("yes\n")
os.Exit(0)
} else {
fmt.Printf("no\n")
os.Exit(1)
}
}
