package main import ( "bytes" "crypto/ed25519" "encoding/hex" "flag" "fmt" "log" "net/http" "git.sigsum.org/sigsum-log-go/pkg/types" ) var ( url = flag.String("url", "http://localhost:6965/sigsum/v0", "base url") sk = flag.String("sk", "e1d7c494dacb0ddf809a17e4528b01f584af22e3766fa740ec52a1711c59500d711090dd2286040b50961b0fe09f58aa665ccee5cb7ee042d819f18f6ab5046b", "witness secret key (hex)") log_vk = flag.String("log_vk", "cc0e7294a9d002c33aaa828efba6622ab1ce8ebdb8a795902555c2813133cfe8", "log public key (hex)") ) func main() { log_vk, err := hex.DecodeString(*log_vk) if err != nil { log.Fatalf("DecodeString: %v", err) } priv, err := hex.DecodeString(*sk) if err != nil { log.Fatalf("DecodeString: %v", err) } sk := ed25519.PrivateKey(priv) vk := sk.Public().(ed25519.PublicKey) fmt.Printf("sk: %x\nvk: %x\n", sk, vk) rsp, err := http.Get(*url + "/get-tree-head-to-sign") if err != nil { log.Fatalf("Get: %v", err) } var sth types.SignedTreeHead if err := sth.UnmarshalASCII(rsp.Body); err != nil { log.Fatalf("UnmarshalASCII: %v", err) } sth.TreeHead.KeyHash = types.Hash(log_vk) fmt.Printf("%+v\n\n", sth) msg := sth.TreeHead.Marshal() sig := ed25519.Sign(sk, msg) sigident := &types.SigIdent{ KeyHash: types.Hash(vk[:]), Signature: &[types.SignatureSize]byte{}, } copy(sigident.Signature[:], sig) buf := bytes.NewBuffer(nil) if err := sigident.MarshalASCII(buf); err != nil { log.Fatalf("MarshalASCII: %v", err) } rsp, err = http.Post(*url+"/add-cosignature", "type/sigsum", buf) if err != nil { log.Fatalf("Post: %v", err) } fmt.Printf("Status: %v\n", rsp.StatusCode) }