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package main
import (
"crypto/rand"
"errors"
"flag"
"fmt"
"io"
"os"
"sauteed-onions.org/onion-csr/internal/options"
"sauteed-onions.org/onion-csr/pkg/ocsr"
"sauteed-onions.org/onion-csr/pkg/okey"
)
const entropyBytes = 10 // 80 bits
func main() {
opts, err := options.New(os.Args[0], os.Args[1:])
if err != nil {
if errors.Is(err, flag.ErrHelp) {
os.Exit(0)
}
fmt.Fprintf(os.Stderr, "ERROR: %v\n", err)
os.Exit(1)
}
var applicantNonce [entropyBytes]byte
if _, err := io.ReadFull(rand.Reader, applicantNonce[:]); err != nil {
fmt.Fprintf(os.Stderr, "ERROR: %v\n", err)
os.Exit(1)
}
priv, err := okey.NewFromHSDir(opts.HSDir)
if err != nil {
fmt.Fprintf(os.Stderr, "ERROR: %v\n", err)
os.Exit(1)
}
csr, err := ocsr.New(priv, opts.CANonce, applicantNonce[:])
if err != nil {
fmt.Fprintf(os.Stderr, "ERROR: %v\n", err)
os.Exit(1)
}
fmt.Fprintf(os.Stdout, "%s", csr)
}
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