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package main
import (
"errors"
"fmt"
"os"
)
var mainUsage = []string{
"-C [-q] -p pubkey -x sigfile [file ...]",
"-G [-n] [-c comment] -p pubkey -s seckey",
"-S [-ez] [-x sigfile] -s seckey -m message",
"-V [-eqz] [-p pubkey] [-t keytype] [-x sigfile] -m message",
}
var ErrEZ = errors.New("can't combine -e and -z options")
func usage() {
fmt.Println("Usage:")
for _, u := range mainUsage {
fmt.Printf(" %v\n", u)
}
os.Exit(2)
}
func fail(err error) {
fmt.Println(err)
os.Exit(1)
}
var modes = map[string]func([]string) error{
"-C": check,
"-G": generate,
"-S": sign,
"-V": verify,
}
func main() {
if len(os.Args) < 2 {
usage()
}
mode, ok := modes[os.Args[1]]
if !ok {
usage()
}
if err := mode(os.Args[2:]); err != nil {
fail(err)
}
}
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