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package main
import (
"flag"
"os"
"crypto/sha256"
"io/ioutil"
"github.com/golang/glog"
"github.com/google/certificate-transparency-go/tls"
"github.com/system-transparency/stfe"
)
var (
name = flag.String("name", "foobar-1.2.3", "a package identifier")
dir = flag.String("dir", "stitem", "directory path where output is stored")
)
func main() {
flag.Parse()
// Use H(name) as a dummy checksum
hasher := sha256.New()
hasher.Write([]byte(*name))
checksum := hasher.Sum(nil)
// Create and serialize an StItem of type checksum_v1
item := stfe.NewChecksumV1([]byte(*name), checksum)
serialized, err := tls.Marshal(item)
if err != nil {
glog.Fatalf("tls marshal failed: %v", err)
}
// Store the serialized item in *dir/name
if err := os.MkdirAll(*dir, 0755); err != nil {
glog.Fatalf("creating directory %s failed: %v", *dir, err)
}
path := *dir + "/" + *name
if err := ioutil.WriteFile(path, serialized, 0644); err != nil {
glog.Fatalf("writing to %s failed: %v", path, err)
}
glog.Infof("Created serialized checksum_v1 StItem: %s", path)
glog.Flush()
}
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