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|
// package main provides a tool named sigsum-debug.
//
// Install as follows:
//
// $ go install -ldflags="-X 'main.someVersion=git commit $(git rev-list -1 HEAD)'"
//
// Usage:
//
// $ sigsum-debug help
//
package main
import (
"flag"
"fmt"
"log"
"os"
)
const usage = `sigsum-debug version %s
Usage:
sigsum-debug help
Outputs a usage message.
sigsum-debug genkey
Outputs a new private key.
sigsum-debug pubkey
Reads a private key from stdin and output its public key.
sigsum-debug hashkey
Reads a public key from stdin and output its key hash.
sigsum-debug hashleaf -k PRIVATE_KEY [-s SHARD_HINT]
Reads data from STDIN and outputs a leaf hash.
-k, --private-key Private key to sign with
-s, --shard-hint Shard hint to use (Default: 0)
sigsum-debug sign -k PRIVATE_KEY [-s SHARD_HINT]
Reads data from STDIN and outputs a signature.
-k, --private-key Private key to sign with
-s, --shard-hint Shard hint to use (Default: 0)
sigsum-debug cosign -w WIT_PRIV -l LOG_PUB
Reads an ASCII signed tree head from STDIN and outputs a cosignature.
-w, --witness-priv Witness private key to sign with
-l, --log-pub Log public key to verify signed tree head
`
var (
optPriv, optPub string
optShardHint uint64
someVersion = "unknown"
)
func main() {
log.SetFlags(0)
var err error
switch cmd := parseCommand(); cmd.Name() {
case "help":
cmd.Usage()
case "genkey":
err = CmdGenKey()
case "pubkey":
err = CmdPubKey()
case "hashkey":
err = CmdHashKey()
case "hashleaf":
err = CmdHashLeaf(optPriv, optShardHint)
case "sign":
err = CmdSign(optPriv, optShardHint)
case "cosign":
err = fmt.Errorf("TODO")
default:
err = fmt.Errorf("invalid command %q, try %q", cmd.Name(), "sigsum help")
}
if err != nil {
log.Printf("%s", err)
os.Exit(1)
}
}
func parseCommand() *flag.FlagSet {
args := os.Args
if len(args) < 2 {
args = append(args, "")
}
fs := flag.NewFlagSet(args[1], flag.ExitOnError)
fs.Usage = func() {
log.Printf(usage, someVersion)
}
registerOptions(fs)
fs.Parse(args[2:])
return fs
}
func registerOptions(fs *flag.FlagSet) {
switch cmd := fs.Name(); cmd {
default:
case "hashleaf":
registerStringOption(fs, &optPriv, "k", "key", "")
registerUint64Option(fs, &optShardHint, "s", "shard-hint", 0)
case "sign":
registerStringOption(fs, &optPriv, "k", "key", "")
registerUint64Option(fs, &optShardHint, "s", "shard-hint", 0)
case "cosign":
registerStringOption(fs, &optPriv, "w", "--witness-priv", "")
registerStringOption(fs, &optPub, "l", "--log-pub", "")
}
}
func registerStringOption(fs *flag.FlagSet, opt *string, short, long, value string) {
fs.StringVar(opt, short, value, "")
fs.StringVar(opt, long, value, "")
}
func registerUint64Option(fs *flag.FlagSet, opt *uint64, short, long string, value uint64) {
fs.Uint64Var(opt, short, value, "")
fs.Uint64Var(opt, long, value, "")
}
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